Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination...

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S1 Electronic Supplementary Information: Efficient Bromination of Olefins, Alkynes, and Ketones with Dimethyl Sulfoxide and Hydrobromic Acid Song Song, Xinwei Li, Xiang Sun, Yizhi Yuan and Ning Jiao* Tables of Contents: (A) General Remarks.................................................................................................S2 (B) Experimental Procedure and Analytical Data of Products..........................S2 (C) References.…………………………………………………………...………...S10 (D) 1 H NMR and 13 C NMR Spectra of Products………………………………...S11 Electronic Supplementary Material (ESI) for Green Chemistry. This journal is © The Royal Society of Chemistry 2015

Transcript of Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination...

Page 1: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

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Electronic Supplementary Information:

Efficient Bromination of Olefins, Alkynes, and Ketones with

Dimethyl Sulfoxide and Hydrobromic Acid

Song Song, Xinwei Li, Xiang Sun, Yizhi Yuan and Ning Jiao*

Tables of Contents:

(A) General Remarks.................................................................................................S2

(B) Experimental Procedure and Analytical Data of Products..........................S2

(C) References.…………………………………………………………...………...S10

(D) 1H NMR and 13C NMR Spectra of Products………………………………...S11

Electronic Supplementary Material (ESI) for Green Chemistry.This journal is © The Royal Society of Chemistry 2015

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(A) General Remarks

All commercially available compounds were purchased from Sigma-Aldrich, Alfa-

Aesar, Acros, Beijing Ouhe and Beijing Chemical Works, Ltd. Unless otherwise

noted, materials obtained from commercial suppliers were used without further

purification. Analysis of crude reaction mixture was done on an Agilent 7890 GC

System with an Agilent 5975 Mass Selective Detector. Products were purified by

flash chromatography on silica gel. 1H-NMR spectra were recorded on Bruker

AVANCE III-400 spectrometers. Chemical shifts (in ppm) were referenced TMS in

CDCl3 (0 ppm). 13C-NMR spectra were obtained by using the same NMR

spectrometers and were calibrated with CDCl3 (δ = 77.00 ppm). Mass spectra were

recorded using a PE SCLEX QSTAR spectrometer. High resolution mass spectra

were obtained with a Bruker APEX IV Fourier transform ion cyclotron resonance

mass spectrometer.

(B) Experimental Procedure and Characterization Data of Products

Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol) were dissolved in EA (2 mL). Aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) was added to the solution at 60 oC and the mixture were stirred for 0.5 h under air at that temperature. After cooling down to room temperature and concentrating in vacuum, the residue was purified by chromatography on silica gel (petroleum ether/ethyl acetate) to afford the dibrominated product 3 or 7.

2-(1,2-Dibromoethyl)naphthalene (3a)[1]

The reaction of 2-vinylnaphthalene 1a (77.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 125.4 mg (80%) of 3a as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.89–7.83 (m, 4H), 7.53–7.50 (m, 3H), 5.33 (dd,

J = 8.8, 7.2 Hz, 1H), 4.16–4.13 (m, 2H). 13C NMR (100 MHz, CDCl3) δ 135.7, 133.5, 132.9, 129.1, 128.2, 127.8, 127.4, 126.9, 126.7, 124.4, 51.3, 34.8.

(1,2-Dibromoethyl)benzene (3b)[2]

The reaction of styrene 1b (52.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in

Br

Br

3a

Br

Br

3b

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EA (2 mL) at 60 oC for 0.5 h, affords 93.6 mg (71%) of 3b as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.38–7.31 (m, 5H), 5.13 (dd, J = 10.4, 5.6 Hz, 1H), 4.08–3.98 (m, 2H). 13C NMR (100 MHz, CDCl3) δ 138.6, 129.1, 128.8, 127.6, 50.9, 35.0.

1-Bromo-4-(1,2-dibromoethyl)benzene (3c)[3]

The reaction of 1-bromo-4-vinylbenzene 1c (91.5 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 130.1 mg (76%) of 3c as a white solid. 1H NMR (CDCl3, 400 MHz): δ 7.52 (d, J = 8.8 Hz, 2H), 7.28 (d, J = 8.0 Hz, 2H), 5.09

(dd, J = 11.2, 5.2 Hz, 1H), 4.06 (dd, J = 10.2, 5.0 Hz, 1H), 3.99–3.94 (m, 1H). 13C NMR (CDCl3, 100 MHz): δ 137.7, 132.1, 129.3, 123.2, 49.5, 34.6.

1-Chloro-4-(1,2-dibromoethyl)benzene (3d)[4]

The reaction of 1-chloro-4-vinylbenzene 1d (69.3 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 110.5 mg (74%) of 3d as a white solid. 1H NMR (CDCl3, 400 MHz): δ 7.38–7.33 (m, 4H), 5.10 (dd, J = 11.0, 5.0 Hz, 1H),

4.06 (dd, J = 10.4, 5.2 Hz, 1H), 3.99–3.94 (m, 1H). 13C NMR (CDCl3, 100 MHz): δ 137.1, 135.0, 129.1, 129.0, 49.5, 34.6.

1-(1,2-Dibromoethyl)-4-methylbenzene (3e)[4] The reaction of 1-methyl-4-vinylbenzene 1e (59.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 109.7 mg (79%) of 3e as a white solid. 1H NMR (CDCl3, 400 MHz): δ 7.29 (d, J = 8.0 Hz, 2H), 7.19 (d, J = 8.0 Hz, 2H),

5.14 (dd, J = 10.6, 5.2 Hz, 1H), 4.07 (dd, J = 10.4, 5.6 Hz, 1H), 4.05–3.99 (m, 1H), 2.36 (s, 3H). 13C NMR (CDCl3, 100 MHz): δ 139.2, 135.6, 129.6, 127.5, 51.0, 35.0, 21.3.

4-(1,2-Dibromoethyl)-1,1'-biphenyl (3f)[5]

The reaction of 4-vinyl-1,1'-biphenyl 1f (90.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 137.7 mg (81%) of 3f as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.65–7.63 (m, 4H), 7.52–7.41 (m, 5H), 5.25 (dd, J =

8.7, 5.9 Hz, 1H), 4.16–4.07 (m, 2H). 13C NMR (100 MHz, CDCl3) δ 142.0, 140.1, 137.4, 128.8, 128.0, 127.6, 127.5, 127.1, 50.7, 34.8.

1-(1,2-Dibromoethyl)-3-nitrobenzene (3g)[6]

Br

Br

3cBr

Br

Br

3dCl

Br

Br

3eMe

Br

Br

3fPh

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The reaction of 1-nitro-3-vinylbenzene 1g (74.6 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 117.4 mg (76%) of 3g as a yellow solid. 1H NMR (CDCl3, 400 MHz): δ 8.29 (t, J = 1.8 Hz, 1H), 8.23–8.21 (m,

1H), 7.75 (d, J = 7.6 Hz, 1H), 7.59 (t, J = 8.0 Hz, 1H), 5.19 (dd, J = 11.2, 4.8 Hz, 1H), 4.11 (dd, J = 10.6, 5.0 Hz, 1H), 4.04–3.98 (m, 1H). 13C NMR (CDCl3, 100 MHz): δ 148.4, 140.8, 133.7, 129.9, 124.0, 122.8, 48.0, 34.1.

1-(1,2-Dibromoethyl)-3-methylbenzene (3h)[7]

The reaction of 1-methyl-3-vinylbenzene 1h (59.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 104.0 mg (75%) of 3h as a white solid. 1H NMR (CDCl3, 400 MHz): δ 7.29–7.25 (m, 1H), 7.20–7.19 (m, 2H), 7.15 (d, J =

7.2 Hz, 1H), 5.11 (dd, J = 10.4, 5.6 Hz, 1H), 4.08–3.99 (m, 2H), 2.37 (s, 3H). 13C NMR (CDCl3, 100 MHz): δ 138.6, 138.5, 130.0, 128.7, 128.3, 124.7, 51.1, 35.0, 21.4.

1-Chloro-2-(1,2-dibromoethyl)benzene (3i) The reaction of 1-chloro-2-vinylbenzene 1i (69.3 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 110.3 mg (74%) of 3i as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.52 (d, J = 7.6 Hz, 1H), 7.39 (d, J = 7.8 Hz, 1H), 7.33 (t, J = 7.4 Hz, 1H), 7.27

(t, J = 8.2 Hz, 1H), 5.70 (t, J = 7.7 Hz, 1H), 4.12–4.07 (m, 2H). 13C NMR (100 MHz, CDCl3) δ 136.0, 133.9, 130.1, 130.0, 128.3, 127.5, 45.5, 33.6.

(1,2-Dibromopropan-2-yl)benzene (3j)[8] The reaction of -methylstryene 1j (59.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 101.0 mg (73%) of 3j as colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.56–7.54 (m, 2H), 7.38–7.30 (m, 3H), 4.35 (d, J = 10.2 Hz, 1H), 4.13 (d, J = 10.2 Hz, 1H), 2.31 (s, 3H). 13C NMR (100 MHz, CDCl3) δ 141.9, 128.5, 128.4, 126.5, 63.7,

43.5, 29.9.

(1,2-Dibromopropyl)benzene (3k)[8]

The reaction of (E)--methylstryene 1k (59.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 108.4 mg (78%) of 3k as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.41–7.32 (m, 5H), 5.05 (d, J = 10.4 Hz, 1H), 4.63–4.59 (m, 1H), 2.05(d, J = 6.4 Hz, 3H).

13C NMR (100 MHz, CDCl3) δ 140.6, 128.8, 126.6, 127.7, 59.1, 51.1, 25.8.

1,2-Dibromo-2,3-dihydro-1H-indene (3l)[9]

Br

Br

3j

Br

Br

3k

Br

Br

3h

Me

Br

Br

3i

Cl

Br

Br

3g

O2N

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The reaction of indene 1l (58.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 101.2 mg (73%) of 3l as colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.46–7.44 (m, 1H), 7.34–7.27 (m, 3H), 5.62 (s, 1H), 4.86 (dt, J = 5.2, 1.2 Hz, 1H), 3.79 (dd, J

= 17.5, 5.2 Hz, 1H), 3.25 (d, J = 17.5 Hz, 1H). 13C NMR (100 MHz, CDCl3) δ 140.5, 140.5, 129.7, 127.9, 125.7, 125.4, 57.7, 54.4, 41.4.

1,2-Dibromo-1,2,3,4-tetrahydronaphthalene (3m)[10]

The reaction of 1,2-dihydronaphthalene 1m (65.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 112.4 mg (78%) of 3m as colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.29 (dd, J = 7.5, 1.4 Hz, 1H), 7.25–7.16 (m, 2H), 7.11 (d, J = 7.5 Hz, 1H),

5.64–5.63 (m, 1H), 4.93–4.90 (m, 1H), 3.25 (ddd, J = 17.7, 11.9, 6.2 Hz, 1H), 2.91 (dd, J = 17.4, 6.0 Hz, 1H), 2.84–2.76 (m, 1H), 2.20–2.13 (m, 1H). 13C NMR (100 MHz, CDCl3) δ 134.4, 132.8, 131.2, 129.2, 128.9, 126.6, 51.52, 51.49, 25.1, 24.4.

5,6-Dibromo-6,7,8,9-tetrahydro-5H-benzo[7]annulene (3n)[11]

The reaction of 6,7-dihydro-5H-benzo[7]annulene 1n (72.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 129.2 mg (85%) of 3n as colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.25–7.12 (m, 4H), 5.49 (d, J = 5.3 Hz, 1H), 4.88–4.85 (m, 1H), 3.31–3.23 (m, 1H), 3.00–2.92 (m, 1H), 2.80–2.74 (m, 1H), 2.27–2.21

(m, 1H), 1.98–1.91 (m, 2H). 13C NMR (100 MHz, CDCl3) δ 142.9, 136.3, 131.3, 130.9, 129.3, 126.1, 58.4, 54.7, 35.3, 34.6, 22.8.

1,2-Dibromodecane (3o)[8]

The reaction of 1-decene 1o (70.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 141.0 mg (94%) of 3o as colorless oil.

1H NMR (400 MHz, CDCl3) δ 4.20–4.13 (m, 1H), 3.85 (dd, J = 10.2, 4.4 Hz, 1H), 3.63 (t, J = 10.0 Hz, 1H), 2.18–2.09 (m, 1H), 1.83–1.73 (m, 1H), 1.60–1.53 (m, 1H), 1.45–1.28 (m, 11H), 0.89 (t, J = 6.5 Hz, 3H). 13C NMR (100 MHz, CDCl3) δ 53.1, 36.3, 36.0, 31.8, 29.3, 29.1, 28.8, 26.7, 22.6, 14.1.

(2,3-Dibromopropoxy)benzene (3p)[12]

The reaction of (allyloxy)benzene 1p (67.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 119.1 mg (81%) of 3p as colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.32–7.28 (m, 2H), 7.00 (t, J = 7.4 Hz, 1H),

Br

Br

3o

O

Br

Br

3p

Br

Br

3l

Br

Br

3m

BrBr

3n

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6.95–6.92 (m, 2H), 4.44–4.33 (m, 3H), 3.95–3.86 (m, 2H). 13C NMR (100 MHz, CDCl3) δ 157.9, 129.6, 121.6, 114.8, 69.0, 47.7, 32.7.

(3,4-Dibromobutyl)benzene (3q)[13]

The reaction of (allyloxy)benzene 1q (66.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 131.5 mg (90%) of 3q as colorless oil. 1H NMR (CDCl3, 400 MHz): δ 7.29–7.21 (m, 5H) ,4.09 (m, 1H), 3.83–3.81 (m,

1H), 3.64–3.59 (m, 1H), 2.92–2.90 (m, 1H), 2.75–2.73 (m, 1H), 2.46–2.45 (m, 1H), 2.07–2.06 (m, 1H). 13C NMR (CDCl3, 100 MHz): δ 140.2, 128.51, 128.47, 126.2, 52.0, 37.6, 36.2, 32.9.

(2,3-Dibromo-2-methylpropyl)benzene (3r)[14]

The reaction of (2-methylallyl)benzene 1r (66.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 121.7 mg (83%) of 3r as colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.40–

7.31 (m, 5H), 3.81 (d, J = 10.2 Hz, 1H), 3.74 (d, J = 10.2 Hz, 1H), 3.33–3.21 (m, 2H), 1.91 (s, 3H). 13C NMR (100 MHz, CDCl3) δ 136.0, 130.9, 128.0, 127.3, 66.6, 47.1, 42.2, 30.7.

1,2-Dibromocyclohexane (3s)[15]

The reaction of cyclohexene 1s (41.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 100.5 mg (83%) of 3s as colorless oil. 1H NMR (CDCl3, 400 MHz): δ 4.46 (s, 2H), 2.49–2.43 (m, 2H), 1.91–1.79

(m, 4H), 1.55–1.50 (m, 2H). 13C NMR (CDCl3, 100 MHz): δ 55.2, 31.9, 22.4.

6,7-Dibromodecahydro-1,4-methanonaphthalene (3t)[16]

The reaction of octahydro-1,4-methanonaphthalene 1t (74.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 135.5 mg (88%) of 3t as a white solid. 1H NMR (400 MHz, CDCl3) δ 4.70 (dt, J = 6.3, 3.1 Hz, 1H), 4.34–4.27 (m, 1H), 2.02

(dt, J = 12.9, 5.0 Hz, 1H), 1.96–1.87 (m, 5H), 1.72–1.66 (m, 1H), 1.60–1.50 (m, 4H), 1.29–1.19 (m, 2H), 1.12 (d, J = 10.4 Hz, 1H). 13C NMR (100 MHz, CDCl3) δ 56.8, 54.8, 42.8, 41.9, 41.3, 36.4, 36.1, 33.5, 33.2, 29.3, 29.2.

1,2-Dibromocyclooctane (3u)[17]

The reaction of (Z)-cyclooctene 1u (55.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 109.3 mg (81%) of 3u as colorless oil. 1H NMR (CDCl3, 400 MHz): δ 4.61–4.56 (m, 2H), 2.45–2.38 (m, 2H),

Br

Br3r

Br

Br3s

Br

Br

3t

Br

Br

3q

Br Br

3u

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2.14–2.05 (m, 2H) ,1.89–1.82 (m, 2H), 1.71–1.55 (m, 4H), 1.52–1.45 (m, 2H). 13C NMR (CDCl3, 100 MHz): δ 61.5, 33.2, 25.9, 25.4.

1,2-Dibromo-1-methylcyclohexane (3v)[18]

The reaction of 1-methylcyclohexene 1v (48.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 0.5 h, affords 107.7 mg (84%) of 3v as colorless oil. 1H NMR (400 MHz, CDCl3) δ 4.65 (s, 1H), 2.58–2.50 (m, 1H), 2.12–2.05 (m, 1H), 2.02–1.93 (m, 5H), 1.86–1.75 (m, 2H), 1.68–1.53 (m, 2H).

13C NMR (100 MHz, CDCl3) δ 70.7, 61.9, 37.6, 34.0, 32.5, 22.7, 20.7.

3-(Bromomethyl)-3-methylisobenzofuran-1(3H)-one (5a) The reaction of 2-(prop-1-en-2-yl)benzoic acid 4a (81.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 1 h, affords 105.4 mg (87%) of 5a as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.82 (d, J = 7.6 Hz, 1H), 7.64 (t, J = 7.3 Hz, 1H), 7.50 (t, J = 7.4 Hz,

1H), 7.45 (d, J = 7.6 Hz, 1H), 3.68 (d, J = 11.1 Hz, 1H), 3.65 (d, J = 11.1 Hz, 1H), 1.75 (s, 3H). 13C NMR (100 MHz, CDCl3) δ 168.9, 151.1, 134.3, 129.8, 126.2, 125.8, 121.4, 84.5, 37.8, 24.2. HRMS (ESI) Calcd for [C10H10BrO2, M + H]+: 240.9859, Found: 240.9863.

3-(Bromomethyl)-3-phenylisobenzofuran-1(3H)-one (5b) The reaction of 2-(1-phenylvinyl)benzoic acid 4b (112.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 1 h, affords 148.2 mg (98%) of 5b as a white solid. 1H NMR (400 MHz, CDCl3) δ 7.93 (d, J = 7.6 Hz, 1H), 7.76–7.72 (m, 1H), 7.67 (d, J = 7.7 Hz, 1H), 7.61–7.56 (m, 3H), 7.42–7.36 (m, 3H), 4.15 (d, J =

11.4 Hz, 1H), 4.09 (d, J = 11.4 Hz, 1H). 13C NMR (100 MHz, CDCl3) δ 168.8, 149.8, 137.5, 134.3, 129.9, 129.1, 129.0, 126.5, 126.0, 125.4, 122.5, 87.2, 37.9. HRMS (ESI) Calcd for [C15H12BrO2, M + H]+: 303.0015, Found: 303.0018.

(E)-(1,2-Dibromoprop-1-en-1-yl)benzene (7a)[14]

The reaction of 1-phenyl-1-propyne 6a (58.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 8 h, affords 118.7 mg (86%) of 7a as colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.38–7.32 (m, 5H), 2.62 (s, 3H). 13C NMR (100 MHz, CDCl3) δ 140.8, 129.1, 128.6, 128.2, 117.2, 116.8, 29.3.

(E)-(1,2-Dibromohex-1-en-1-yl)benzene (7b)[19]

The reaction of hex-1-yn-1-ylbenzene 6b (79.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 8 h, affords 108.3 mg (68%) of 7b as colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.38–7.23 (m, 5H), 2.85 (t, J

BrMe

Br3v

Ph

MeBr

Br

7a

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= 7.6 Hz, 2H), 1.72–1.64 (m, 2H), 1.50–1.42 (m, 2H), 0.99 (t, J = 7.6 Hz, 3H). 13C NMR (100 MHz, CDCl3) δ 141.0, 129.1, 128.5, 128.2, 123.7, 116.2, 40.8, 29.6, 21.8, 14.0.

(E)-5,6-Dibromodec-5-ene (7c)[20] The reaction of dec-5-yne 6c (69.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 8 h, affords 123.2 mg (83%) of 7c as colorless oil. 1H NMR (400 MHz, CDCl3) δ 2.67 (t, J = 7.4 Hz, 4H), 1.59–1.52 (m, 4H), 1.40–1.31 (m, 4H), 0.94 (t, J = 7.4 Hz, 6H). 13C NMR (100

MHz, CDCl3) δ 121.6, 40.5, 29.6, 21.7, 13.9.

(E)-1-(1,2-Dibromovinyl)-4-methoxybenzene (7d)[20]

The reaction of 1-ethynyl-4-methoxybenzene 6d (66.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 5 h, affords 118.2 mg (81%) of 7d as colorless oil. 1H NMR (400 MHz, CDCl3) δ 7.48 (d, J = 8.4 Hz, 2H), 6.90 (d, J = 8.4 Hz, 2H),

6.73 (s, 1H), 3.83 (s, 3H). 13C NMR (100 MHz, CDCl3) δ 160.2, 130.8, 129.1, 121.5, 113.5, 101.9, 55.3.

(E)-1,2-dibromooct-1-ene (7e)[21]

The reaction of 1-phenyl-1-propyne 6e (55.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 202 mg, 1.2 mmol) in EA (2 mL) at 60 oC for 8 h, affords 86.6 mg (64%) of 7e as colorless oil. 1H NMR (400 MHz, CDCl3) δ 6.40 (s, 1H), 2.59 (t, J = 7.4 Hz, 2H), 1.59–1.55 (m. 2H), 1.36–1.31 (m. 6H), 0.90 (t, J = 6.8 Hz,

3H). 13C NMR (100 MHz, CDCl3) δ 127.0, 102.1, 36.9, 31.5, 28.0, 27.0, 22.5, 14.0.

Typical procedure for bromination of ketones: Ketone 8 (0.5 mmol) and DMSO (43 μL, 0.6 mmol) in EA (2 mL) were added hydrobromic acid (48%, 0.6 mmol) at 60 oC under air. The mixture were stirred at that temperature. After cooling down to room temperature and concentrating in vacuum, the residue was purified by chromatography on silica gel (petroleum ether/ethyl acetate) to afford the brominated product 9.

2-Bromoacetophenone (9a)[22]

The reaction of acetophenone 8a (60.1 mg, 0.5 mmol), DMSO (43 μL, 0.55 mmol), and aqueous hydrobromic acid (48%, 101 mg, 0.6 mmol) in EA (2 mL) at 60 oC for 2 h, affords 72.3 mg (73%) of 9a as a pale yellow solid. 1H NMR (400 MHz, CDCl3) δ 7.99–7.97 (m, 2H), 7.62–7.59 (m, 1H), 7.50–7.47 (m, 2H), 4.45 (s, 2H). 13C NMR (100 MHz,

CDCl3) δ 191.2, 133.9, 133.9, 128.9, 128.8, 30.9.

2-Bromo-1-phenylbutan-1-one (9b)[23]

O

Br

9a

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S9

The reaction of butyrophenone 8b (74.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 101 mg, 0.6 mmol) in EA (2 mL) at 60 oC for 6 h, affords 108.0 mg (94%) of 9b as pale yellow oil. 1H NMR (400 MHz, CDCl3) δ 8.02–8.01 (m, 2H), 7.61 (t, J = 7.6 Hz, 1H), 7.50 (t, J = 7.8 Hz, 1H), 5.08 (dd, J =

7.6, 6.4 Hz, 1H), 2.28–2.10 (m, 2H), 1.08 (t, J = 7.4 Hz, 3H). 13C NMR (100 MHz, CDCl3) δ 193.2, 134.5, 133.6, 128.8, 128.7, 49.0, 26.9, 12.1.

2-Bromo-1-phenylbutan-1-one (9c)[24]

The reaction of isobutyrophenone 8c (74.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 101 mg, 0.6 mmol) in EA (2 mL) at 60 oC for 6 h, affords 102.6 mg (90%) of 9c as colorless oil. 1H NMR (400 MHz, CDCl3) δ 8.15–8.12 (m, 2H), 7.54–7.50 (m, 1H), 7.45–7.42 (m, 1H), 2.04 (s, 6H). 13C NMR (100

MHz, CDCl3) δ 196.9, 134.9, 132.3, 130.0, 128.1, 60.3, 31.5.

(1-Bromocyclohexyl)(phenyl)methanone (9d)[25]

The reaction of cyclohexyl(phenyl)methanone 8d (94.1 mg, 0.5 mmol), DMSO (43 μL, 0.6 mmol), and aqueous hydrobromic acid (48%, 101 mg, 0.6 mmol) in EA (2 mL) at 60 oC for 6 h, affords 122.9 mg (92%) of 9d as colorless oil. 1H NMR (400 MHz, CDCl3) δ 8.09–8.07 (m, 2H), 7.53 (t, J = 7.6 Hz, 1H), 7.43 (t, J = 7.6 Hz,

2H), 2.38–2.32 (m, 2H), 2.22–2.17 (m, 2H), 1.83–1.77 (m, 2H), 1.59–1.52 (m, 3H), 1.41–1.38 (m, 1H). 13C NMR (100 MHz, CDCl3) δ 197.4, 135.8, 132.0, 129.7, 128.1, 67.9, 38.2, 24.9, 23.5.

O

Br

9b

O

Br

9c

OBr

9d

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S10

(F) References

[1] Nair, V.; Panicker, S. B.; Augustine, A.; George, T. G.; Thomas, S.; Vairamani, M. Tetrahedron 2001, 57, 7417.

[2] Yu, T.-Y.; Wang, Y.; Hu, X.-Q.; Xu, P.-F. Chem. Commun. 2014, 50, 7817. [3] Das, B.; Srinivas, Y.; Sudhakar, C.; Ravikanth, B. J. Chem. Res. 2008 , 4, 188. [4] MacHarla, A. K.; Chozhiyath N. R.; Nama, N. Tetrahedron Lett. 2012, 53, 1401. [5] Piou, T.; Rovis, T. J. Am. Chem. Soc. 2014, 136, 11292. [6] Wang, Y.-F.; Ton, K. K.; Chiba, S.; Narasaka, K. Org. Lett. 2008, 10, 5019. [7] Qaseer Polish J. Chemistry, 2007, 81, 31. [8] Kikushima, K.; Moriuchi, T.; Hirao, T. Chem. Asian J. 2009, 4, 1213. [9] Austin, R. A.; Lillya, C. P. J. Org. Chem. 1969, 34, 1327. [10] Cagle, Mike D.; Firsan, Sharbil J.; Eisenbraun, E. J. Org. Prep. Proced. Int. 1994,

26, 370. [11] Yildiz, Y. K.; Ozturk, T.; Balci, M. Tetrahedron 1999, 55, 9317. [12] Braddock, D. C.; Cansell, G.; Hermitage, S. A. Synlett 2004, 3, 461. [13] Hernandez-Torres, G.; Tan, B.; Barbas, C. F. Org. Lett. 2012, 14, 1858. [11] Braddock, D. C.; Cansell, G.; Hermitage, S. A. Synlett 2004, 3, 461. [14] Stodulski, M.; Gotzinger, A.; Kohlhepp, S. V.; Gulder, T. Chem. Commun. 2014,

50, 3435. [15] Van Zee, N. J.; Dragojlovic, V. Org. Lett. 2009, 11, 3190. [16] Rye, A. R.; Wege, D. Australia J. Chem. 1974, 27, 1943. [17] Wu, L.; Yin, Z. Eur. J. Inorg. Chem. 2013, 6156. [18] Altona, C.; Buys, H. R.; Hageman, H. J.; Havinga, E. Tetrahedron 1967, 23,

2265. [19] Bianchini, R.; Chiappe, C.; Moro, G. L.; Lenoir, D.; Lemmen, P.; Goldberg, N.

Chem.– Eur. J. 1999, 5, 1570. [20] Xiang, J.; Yuan, R.; Wang, R.; Yi, N.; Lu, L.; Zou, H.; He, W. J. Org. Chem.

2014, 79, 11378 [21] Yonehara, K.; Kamata, K.; Yamaguchi, K.; Mizuno, N. Chem. Commun. 2011,

47, 1692. [19] Zhang, J.; Wang, J.; Qiu, Z.; Wang, Y. Tetrahedron 2011, 67, 6859. [20] Lundin, P. M.; Esquivias, J.; Fu, G. C. Angew. Chem. Int. Ed. 2009, 48, 154. [21] Tada, N.; Ban, K.; Hirashima, S.; Miura, T.; Itoh, A. Org. Biomol. Chem. 2010, 8,

4701. [22] Meneguzzo, E.; Norcini, G.; Li, B. G. Patent: US2011/65962 A1,2011. [23] Patel, A.; Bӧhmdorfer, S.; Hofinger, A.; Netscher, T.; Rosenau, T. Eur. J. Org.

Chem. 2009, 4873.

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S11

(G) 1H NMR and 13C NMR Spectra of Products

7

.89

1

7.8

70

7

.85

3

7.8

34

7

.52

7

7.5

18

7

.51

6

7.5

08

7

.50

3

5

.34

7

5.3

30

5

.32

6

5.3

07

4

.15

8

4.1

41

4

.13

6

4.1

34

-0

.00

0

1.0

0

2.0

4

4.1

2

3.0

5

10 8 6 4 2 0 PPM

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S12

13

5.7

08

13

3.5

13

13

2.9

13

12

9.0

82

12

8.1

97

12

7.7

71

12

7.4

21

12

6.9

06

12

6.6

77

12

4.3

57

77

.31

6 7

7.0

00

76

.67

6

51

.33

9

34

.78

0

200 150 100 50 0 PPM

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S13

7

.38

0

7.3

62

7

.34

1

7.3

22

7

.30

8

5

.14

9

5.1

35

5

.12

3

5.1

09

4

.07

9

4.0

63

4

.05

3

4.0

38

4

.03

5

4.0

30

4

.00

4

3.9

78

-0

.00

0

1.0

0

2.0

8

5.0

4

10 8 6 4 2 0 PPM

Br

Br

3b

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S14

13

8.5

68

12

9.1

22

12

8.8

03

12

7.6

10

77

.31

9 7

7.0

00

76

.67

5

50

.85

5

34

.98

8

200 180 160 140 120 100 80 60 40 20 PPM

Br

Br

3b

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S15

7

.52

8

7.5

06

7

.29

0

7.2

70

7

.25

8

5

.10

9

5.0

96

5

.08

1

5.0

68

4

.07

7

4.0

64

4

.05

1

4.0

39

3

.99

0

3.9

63

3

.93

6

2.0

0

2.0

1

1.0

1 1.0

4 1

.04

10 8 6 4 2 0 PPM

Br

Br

Br

3c

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S16

13

7.6

66

13

2.0

73

12

9.3

13

12

3.1

75

77

.32

5 7

7.0

00

76

.68

6

49

.54

2

34

.57

0

200 150 100 50 0 PPM

Br

Br

Br

3c

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S17

7

.37

6

7.3

69

7

.35

4

7.3

49

7

.33

3

7.3

27

7

.25

8

5

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4

5.1

11

5

.09

6

5.0

84

4

.08

3

4.0

70

4

.05

7

4.0

44

3

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4

3.9

67

3

.94

0

-0

.00

0

1.0

0 1.0

2

4.0

0

1.0

3

10 8 6 4 2 0 PPM

Cl

Br

Br

3d

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S18

13

7.1

47

13

4.9

84

12

9.1

06

12

9.0

35

77

.32

5 7

7.0

05

76

.68

6

49

.50

5

34

.63

7

200 150 100 50 0 PPM

Cl

Br

Br

3d

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S19

7

.30

3

7.2

83

7

.24

7

7.1

96

7

.17

6

5

.15

6

5.1

43

5

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0

5.1

16

4

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1

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77

4

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5

4.0

51

4

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6

4.0

19

3

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4

2

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5

-0

.00

0

2.0

0 2

.01

0.9

8

1.0

2 1

.05

3.0

5

10 8 6 4 2 0 PPM

Br

Br

3e

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S20

13

9.2

31

13

5.6

38

12

9.5

62

12

7.4

91

77

.31

9 7

7.0

00

76

.67

7

51

.01

6

35

.02

6

21

.25

0

200 150 100 50 0 PPM

Br

Br

3e

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7

.65

0

7.6

31

7

.51

7

7.4

93

7

.47

0

7.4

26

7

.40

8

5

.26

4

5.2

50

5

.24

3

5.2

28

4

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3

4.1

37

4

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5

4.0

99

4

.07

3

1.0

0

2.0

4

4.1

0

5.0

7

10 8 6 4 2 0 PPM

Br

Br

3fPh

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14

1.9

74

14

0.1

28

13

7.4

45

12

8.7

86

12

8.0

34

12

7.6

29

12

7.4

98

12

7.0

63

77

.32

0 7

7.0

00

76

.68

1

50

.67

8

34

.82

7

200 150 100 50 PPM

Br

Br

3fPh

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8

.29

0

8.2

86

8

.28

1

8.2

34

8

.23

2

8.2

29

8

.21

3

8.2

11

8

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8

7.7

55

7

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6

7.6

09

7

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9

7.5

69

7

.26

5

5

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3

5.2

01

5

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5

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73

4

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3

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20

4

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6

4.0

94

4

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6

4.0

09

3

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2

-0

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0

1.0

0 1.0

6 1

.03

1.0

1 1

.01

1.0

4 1

.04

10 8 6 4 2 0 PPM

Br

Br

3g

O2N

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S24

14

8.4

22

14

0.7

75

13

3.7

37

12

9.9

11

12

3.9

65

12

2.8

11

77

.31

2 7

7.0

00

76

.68

1

47

.97

4

34

.10

4

200 150 100 50 0 PPM

Br

Br

3g

O2N

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S25

7

.28

6

7.2

66

7

.24

6

7.2

03

7

.18

6

7.1

59

7

.14

1

5

.12

9

5.1

15

5

.10

3

5.0

89

4

.08

4

4.0

69

4

.05

8

4.0

43

4

.01

7

3.9

91

2

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7

0

.00

0

3.0

0

1.0

1

2.0

7

0.9

8 2

.04

1.1

7

10 8 6 4 2 0 PPM

Br

Br

3h

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13

8.6

02

13

8.4

69

13

0.0

14

12

8.7

11

12

8.2

67

12

4.6

50

77

.31

8 7

7.0

00

76

.67

6

51

.08

7

34

.99

1

21

.37

8

200 150 100 50 0 PPM

Br

Br

3h

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7

.53

1

7.5

12

7

.40

2

7.3

83

7

.34

8

7.3

29

7

.31

1

7.2

89

7

.27

0

7.2

48

5

.72

4

5.7

06

5

.68

6

4

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7

4.0

90

4

.06

9

0

.00

0

1.0

0

2.1

5

1.0

3 1

.01

1.0

5 1

.08

10 8 6 4 2 0 PPM

Br

Br

3i

Cl

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13

5.9

74

13

3.8

59

13

0.0

95

13

0.0

16

12

8.2

56

12

7.5

21

77

.32

9 7

7.0

00

76

.68

5

45

.52

9

33

.55

1

200 150 100 50 0 PPM

Br

Br

3i

Cl

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7

.56

1

7.5

57

7

.55

2

7.5

43

7

.53

9

7.5

37

7

.37

8

7.3

75

7

.37

0

7.3

58

7

.35

3

7.3

42

7

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8

7.3

22

7

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8

7.3

15

7

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6

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00

4

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1

4.3

36

4

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0

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2

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2

0

.00

0

3.0

0

1.0

0

1.1

1

2.0

0

3.0

4

10 8 6 4 2 0 PPM

Br

Br

3j

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14

1.8

62

12

8.4

69

12

8.4

14

12

6.5

24

77

.32

2 7

7.0

00

76

.68

7

63

.70

5

43

.47

8

29

.87

5

150 100 50 0PPM

Br

Br

3j

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7

.41

0

7.4

05

7

.38

9

7.3

87

7

.36

9

7.3

67

7

.35

2

7.3

48

7

.34

5

7.3

40

7

.33

4

7.3

24

7

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0

5

.06

2

5.0

36

4

.63

0

4.6

20

4

.61

3

4.6

04

4

.59

7

4.5

88

2

.05

9

2.0

43

1.0

0

1.0

2

3.1

2

5.0

6

10 8 6 4 2 0 PPM

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0.5

58

12

8.7

75

12

8.6

23

12

7.7

00

77

.31

2 7

7.0

00

76

.68

4

59

.13

8

51

.12

6

25

.78

9

200 150 100 50 0 PPM

Page 33: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S33

7

.46

3

7.4

59

7

.45

2

7.4

45

7

.44

0

7.3

38

7

.33

4

7.3

21

7

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6

7.3

09

7

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5

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00

7

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1

7.2

80

7

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6

5.6

19

4

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0

4.8

67

4

.86

4

4.8

57

4

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4

4.8

51

3

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6

3.8

03

3

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2

3.7

59

3

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9

3.2

25

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0

1.0

1

1.0

5

1.0

6

1.0

0

1.0

1

3.0

5

10 8 6 4 2 0 PPM

Page 34: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S34

14

0.5

33

14

0.5

21

12

9.6

60

12

7.9

16

12

5.6

87

12

5.3

64

77

.31

2 7

7.0

00

76

.68

2

57

.70

5

54

.39

9

41

.40

3

200 150 100 50 0 PPM

Page 35: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S35

7

.30

5

7.3

02

7

.28

6

7.2

82

7

.24

5

7.2

42

7

.22

7

7.2

23

7

.21

5

7.2

09

7

.20

5

7.1

92

7

.17

5

7.1

57

7

.11

7

7.0

98

5

.64

0

5.6

35

5

.63

1

4

.92

6

4.9

19

4

.91

5

4.9

10

4

.90

4

3

.29

6

3.2

80

3

.26

6

3.2

51

3

.23

7

3.2

22

3

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7

2.9

41

2

.92

7

2.8

98

2

.88

2

2.8

43

2

.83

7

2.8

28

2

.82

2

2.8

13

2

.80

7

2.8

01

2

.79

2

2.7

86

2

.77

7

2.7

71

2

.76

2

2.7

56

2

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9

2.1

95

2

.19

0

2.1

85

2

.18

0

2.1

74

2

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0

2.1

65

2

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2

2.1

59

2

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3

2.1

48

2

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3

2.1

38

2

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3

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00

1.0

0

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1

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6

1.0

6 1

.06

1.0

6

1.0

1 2

.11

0.9

8

1.0

0

8 7 6 5 4 3 2 1 0 PPM

Page 36: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

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4.3

95

13

2.7

90

13

1.1

83

12

9.1

52

12

8.8

58

12

6.6

15

77

.31

3 7

7.0

00

76

.68

7

51

.52

2 5

1.4

92

25

.09

8 2

4.4

27

200 150 100 50 PPM

Page 37: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S37

7

.22

9

7.2

24

7

.21

7

7.2

11

7

.20

6

7.1

83

7

.16

8

7.1

64

7

.15

8

7.1

40

7

.12

2

5

.49

5

5.4

82

4

.88

3

4.8

75

4

.87

1

4.8

66

4

.86

3

4.8

52

3

.30

5

3.2

97

3

.27

6

3.2

69

3

.25

9

3.2

46

3

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1

3.2

32

3

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1

2.9

94

2

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9

2.9

83

2

.97

9

2.9

72

2

.96

2

2.9

55

2

.94

4

2.9

39

2

.93

4

2.9

23

2

.91

6

2.7

97

2

.79

4

2.7

88

2

.78

4

2.7

78

2

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4

2.7

56

2

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1

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74

2

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4

2.2

60

2

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7

2.2

47

2

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6

2.2

29

2

.22

6

2.2

22

2

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9

2.2

16

2

.21

2

2.2

09

1

.97

6

1.9

70

19

64

1.0

0

0.9

9

1.0

2

1.0

3

1.0

4

1.0

3

2.0

5

4.1

4

8 7 6 5 4 3 2 1 PPM

Page 38: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S38

14

2.9

10

13

6.3

45

13

1.3

14

13

0.8

84

12

9.3

02

12

6.0

91

77

.31

2 7

7.0

00

76

.68

0

58

.35

3

54

.69

8

35

.25

8 3

4.5

99

22

.76

7

200 150 100 50 PPM

Page 39: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S39

4

.19

8

4.1

90

4

.17

7

4.1

66

4

.15

7

4.1

43

4

.13

4

3.8

64

3

.85

3

3.8

38

3

.82

7

3.6

51

3

.62

6

3.6

01

2

.17

5

2.1

65

2

.15

3

2.1

39

2

.12

9

2.1

16

2

.10

5

2.0

93

1

.82

9

1.8

17

1

.80

5

1.7

93

1

.78

1

1.7

69

1

.75

7

1.7

45

1

.73

4

1.6

04

1

.57

2

1.5

61

1

.55

1

1.5

34

1

.53

0

1.4

51

1

.43

8

1.4

27

1

.41

3

1.3

95

1

.38

3

1.2

83

0

.90

2

0.8

87

0

.87

0

0.0

00

1.0

0

1.0

2

1.0

0

1.0

0

1.0

3

1.0

8

11

.35

3.1

7

8 7 6 5 4 3 2 1 0 PPM

Page 40: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S40

77

.31

8 7

7.0

00

76

.67

5

53

.09

6

36

.30

7 3

6.0

14

31

.80

2 2

9.3

17

29

.16

1 2

8.7

94

26

.71

7 2

2.6

22

14

.06

3

140 120 100 80 60 40 20 0 PPM

Page 41: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S41

7

.32

2

7.3

17

7

.30

4

7.3

00

7

.29

5

7.2

87

7

.28

2

7.2

36

7

.01

4

6.9

96

6

.97

8

6.9

46

6

.94

3

6.9

24

4

.44

0

4.4

28

4

.42

0

4.4

16

4

.40

8

4.4

02

4

.39

8

4.3

77

4

.36

6

4.3

53

4

.33

9

4.3

27

3

.95

1

3.9

31

3

.92

5

3.9

04

3

.90

1

3.8

89

3

.87

5

3.8

62

0

.00

0

2.0

0

2.9

8

1.9

4

0.9

7 1

.93

10 8 6 4 2 0 PPM

Page 42: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S42

15

7.9

41

12

9.5

90

12

1.6

46

11

4.8

39

77

.31

6 7

7.0

00

76

.68

1

69

.03

5

47

.71

3

32

.73

6

200 150 100 50 0 PPM

Page 43: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S43

7

.28

5

7.2

13

4

.08

6

3.8

33

3

.82

1

3.8

07

3

.63

9

3.6

15

3

.59

1

2

.91

4

2.7

45

2

.73

0

2.4

62

2

.45

9

2.4

47

2

.07

4

2.0

56

1.0

0

1.0

1

1.0

2

1.0

2

1.0

1

1.0

2

1.0

2

1.9

8 2

.96

10 8 6 4 2 0 PPM

3q

Br

Br

Page 44: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S44

14

0.1

76

12

8.5

10

12

8.4

74

12

6.2

46

77

.32

1 7

6.9

94

76

.67

7

52

.01

7

37

.62

1 3

6.1

81

32

.92

8

200 150 100 50 0 PPM

3q

Br

Br

Page 45: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S45

7

.40

4

7.3

88

7

.33

0

7.3

13

3

.82

6

3.8

00

3

.75

2

3.7

26

3

.33

0

3.2

86

3

.25

0

3.2

42

3

.20

6

1

.90

6

-0

.00

0

1.0

0 0

.98

1.9

9

2.9

9

5.1

4

10 8 6 4 2 0 PPM

Page 46: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S46

13

5.9

76

13

0.8

59

12

8.0

40

12

7.2

53

77

.31

2 7

7.0

00

76

.68

2

66

.55

0

47

.14

3

42

.18

4

30

.69

6

200 150 100 50 0 PPM

Page 47: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S47

7

.26

5

4

.45

6

2.4

90

2

.48

5

2.4

80

2

.47

2

2.4

65

2

.45

5

2.4

48

2

.44

1

2.4

36

2

.42

9

1.9

14

1

.90

9

1.9

04

1

.89

9

1.8

95

1

.89

0

1.8

80

1

.87

2

1.8

60

1

.85

4

1.8

35

1

.83

0

1.8

23

1

.81

4

1.8

06

1

.79

7

1.7

89

1

.55

0

1.5

32

1

.52

6

1.5

18

1

.50

9

1.5

00

-0

.00

0

2.0

0

2.0

7

4.0

6

2.0

6

10 8 6 4 2 0 PPM

3s

Br

Br

Page 48: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S48

77

.31

9 7

6.9

94

76

.68

1

55

.17

6

31

.94

9

22

.35

4

200 150 100 50 0 PPM

3s

Br

Br

Page 49: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S49

4

.71

4

4.7

08

4

.70

5

4.6

99

4

.69

0

4.3

39

4

.33

0

4.3

26

4

.31

6

4.3

07

4

.29

6

4.2

86

2

.04

7

2.0

35

2

.02

2

2.0

15

2

.00

3

1.9

90

1

.96

3

1.9

51

1

.94

4

1.9

28

1

.92

3

1.9

20

1

.91

1

1.9

03

1

.89

1

1.8

79

1

.86

9

1.7

24

1

.71

0

1.7

08

1

.69

2

1.6

78

1

.66

2

1.6

29

1

.59

7

1.5

79

1

.56

5

1.5

58

1

.55

0

1.5

47

1

.53

7

1.5

15

1

.51

0

1.4

98

1

.29

8

1.2

93

1

.26

9

1.2

67

12

60

1.0

0

1.0

0

1.1

0

5.1

5

1.0

6

4.0

3

2.1

6 1

.06

7 6 5 4 3 2 1 PPM

Br

Br

3t

Page 50: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S50

77

.31

3 7

7.0

00

76

.68

3

56

.82

4 5

4.7

69

42

.78

5 4

1.9

30

41

.30

2 3

6.4

34

36

.13

7 3

3.5

37

33

.16

9 2

9.2

56

29

.18

9

140 120 100 80 60 40 20 0 PPM

Br

Br

3t

Page 51: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S51

4

.61

2

4.6

08

4

.59

5

4.5

88

4

.58

4

4.5

79

4

.57

7

4.5

64

4

.56

0

2

.45

1

2.4

48

2

.44

2

2.4

40

2

.42

8

2.4

26

2

.42

0

2.4

17

2

.41

2

2.4

09

2

.40

3

2.4

01

2

.38

7

2.3

81

2

.13

9

2.1

31

2

.12

6

2.1

20

2

.11

1

2.1

06

2

.10

0

2.0

92

2

.08

6

2.0

80

2

.07

2

2.0

67

2

.06

1

2.0

53

1

.89

2

1.8

84

1

.87

8

1.8

69

1

.85

6

1.8

43

1

.83

1

1.8

20

1

.72

8

1.7

11

1

.70

5

1.6

99

1

.69

2

1.6

85

1

.67

8

1.6

75

1

.67

0

1.6

62

1

.65

5

1.6

47

1

.63

9

1.6

33

1

.62

8

1.6

23

1.6

19

2.0

3

2.0

4

2.0

3

2.0

0 4

.03

1.9

310 8 6 4 2 0 PPM

3u

Br Br

Page 52: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S52

77

.32

0 7

7.0

00

76

.68

2

61

.46

7

33

.21

0

25

.88

7 2

5.3

83

200 150 100 50 0 PPM

3u

Br Br

Page 53: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S53

4

.64

6

2

.58

3

2.5

73

2

.56

5

2.5

55

2

.54

6

2.5

36

2

.52

7

2.5

18

2

.50

9

2.5

00

2

.12

2

2.1

15

2

.09

9

2.0

89

2

.07

7

2.0

63

2

.05

3

2.0

22

2

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2

2.0

03

2

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2

1.9

93

1

.96

2

1.9

43

1

.93

3

1.8

58

1

.83

0

1.8

21

1

.80

7

1.8

03

1

.79

5

1.7

87

1

.77

9

1.7

59

1

.75

1

1.6

84

1

.67

2

1.6

58

1

.64

8

1.6

37

1

.62

4

1.5

89

1

.57

6

1.5

64

1

.55

3

0.9

5

1.0

0

1.1

3

5.1

1

1.9

7

2.1

5

7 6 5 4 3 2 1 0 PPM

Page 54: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S54

77

.31

5 7

7.0

00

76

.68

5

70

.69

4

61

.93

2

37

.61

1

34

.04

0 3

2.5

00

22

.69

6 2

0.6

75

140 120 100 80 60 40 20 0 PPM

Page 55: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S55

7

.83

4

7.8

15

7

.65

7

7.6

39

7

.62

0

7.5

18

7

.49

9

7.4

81

7

.45

9

7.4

39

3

.69

7

3.6

69

3

.66

0

3.6

32

1

.75

3

0

.00

0

3.0

0

1.0

0 0

.99

0.9

3 0.9

8 0

.95

0.9

7

10 8 6 4 2 0 PPM

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16

8.8

61

15

1.0

88

13

4.2

79

12

9.7

79

12

6.2

10

12

5.8

05

12

1.4

05

84

.48

1

77

.32

6 7

7.0

00

76

.68

7

37

.83

4

24

.19

9

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7

.94

1

7.9

22

7

.75

9

7.7

56

7

.74

0

7.7

21

7

.71

9

7.6

80

7

.66

0

7.6

05

7

.60

2

7.5

84

7

.58

2

7.5

77

7

.57

2

7.5

65

7

.56

0

7.5

57

7

.42

3

7.4

17

7

.41

3

7.4

01

7

.39

8

7.3

86

7

.38

2

7.3

76

7

.37

2

7.3

66

7

.35

9

7.2

59

4

.16

1

4.1

33

4

.10

6

4.0

78

0

.00

0

1.0

0

1.0

1 1

.01

2.9

9

3.0

2

1.0

6 1

.06

10 8 6 4 2 0 PPM

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16

8.8

48

14

9.7

60

13

7.4

82

13

4.3

37

12

9.9

27

12

9.1

07

12

8.9

60

12

6.5

14

12

5.9

55

12

5.4

24

12

2.5

42

87

.20

4

77

.31

4 7

7.0

00

76

.68

1

37

.85

5

200 150 100 50 0PPM

Page 59: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S59

7

.38

3

7.3

73

7

.35

8

7.3

54

7

.34

8

7.3

38

7

.32

7

7.3

20

7

.26

0

2

.62

2 3

.00

5.0

6

10 8 6 4 2 0 PPM

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S60

14

0.7

72

12

9.0

86

12

8.5

84

12

8.2

16

11

7.2

17

11

6.7

96

77

.31

7 7

7.0

00

76

.68

1

29

.30

0

200 150 100 50 0 PPM

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S61

7

.37

8

7.3

54

7

.34

4

7.3

24

7

.31

7

7.3

13

7

.30

3

7.2

89

7

.23

4

2

.86

5

2.8

46

2

.82

7

1

.71

9

1.7

01

1

.68

2

1.6

63

1

.64

4

1.4

97

1

.47

8

1.4

59

1

.44

1

1.4

22

1

.00

7

0.9

89

0

.97

0

0.0

00

2.0

0

1.9

9

2.0

9

2.9

7

4.9

4

10 8 6 4 2 0 PPM

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14

0.9

58

12

9.0

90

12

8.5

11

12

8.2

16

12

3.6

75

11

6.1

58

77

.31

9 7

7.0

06

76

.68

6

40

.84

8

29

.60

4

21

.76

6

13

.98

0

200 150 100 50 0 PPM

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S63

2

.68

5

2.6

67

2

.64

8

1

.59

2

1.5

74

1

.55

4

1.5

48

1

.53

7

1.5

16

1

.39

7

1.3

79

1

.36

0

1.3

41

1

.32

3

1.3

05

0

.95

5

0.9

36

0

.91

8

0.0

00

4.0

0

4.1

4

4.1

2

6.0

9

10 8 6 4 2 0 PPM

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S64

12

1.6

42

77

.31

8 7

7.0

00

76

.67

9

40

.53

9

29

.57

4

21

.66

4

13

.93

2

200 150 100 50 0 PPM

Page 65: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

S65

7.4

91

7.4

70

6.9

09

6.8

88

6.7

32

3.8

28

0.0

00

2.0

2

2.0

5

0.9

3

3.0

0

10 8 6 4 2 0 PPM

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S66

16

0.1

55

13

0.7

69

12

9.1

19

12

1.4

60

11

3.5

24

10

1.9

20

77

.31

5 7

7.0

00

76

.68

1

55

.29

5

200 150 100 50 0 PPM

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S67

7

.26

1

6

.40

1

2

.61

2

2.5

94

2

.57

5

1

.59

4

1.5

77

1

.55

9

1.5

49

1

.35

5

1.3

22

1

.31

3

0.9

14

0

.89

7

0.8

81

0

.00

0

0.9

3

2.0

0

2.1

9

6.1

7

3.0

3

10 8 6 4 2 0 PPM

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S68

12

7.0

47

10

2.0

87

77

.31

9 7

7.0

00

76

.68

1

36

.86

5

31

.50

6 2

8.0

23

26

.97

4

22

.50

4

14

.02

9

200 150 100 50 0 PPM

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S69

7

.98

7

7.9

69

7

.62

2

7.6

03

7

.58

5

7.5

05

7

.48

6

7.4

67

7

.26

0

4

.45

2

2.0

0

0.9

9 2

.01

2.0

310 8 6 4 2 0 PPM

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S70

19

1.2

10

13

3.9

33

13

3.8

88

12

8.8

57

12

8.8

13

77

.32

0 7

7.0

00

76

.68

1

30

.86

9

200 150 100 50 0 PPM

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S71

8

.02

3

8.0

05

8

.00

1

7.6

02

7

.58

4

7.5

65

7

.49

6

7.4

76

7

.45

7

5

.09

6

5.0

80

5

.07

7

5.0

61

2

.28

0

2.2

62

2

.24

4

2.2

27

2

.20

9

2.1

75

2

.15

7

2.1

38

2

.12

0

2.1

01

1

.10

0

1.0

81

1

.06

3 3

.00

2.0

4

0.9

8

1.9

1

0.9

5 1

.96

10 8 6 4 2 0PPM

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S72

19

3.1

76

13

4.5

13

13

3.5

71

12

8.7

64

12

8.6

97

77

.31

9 7

7.0

00

76

.67

6

49

.04

6

26

.86

2

12

.07

2

200 150 100 50 0 PPM

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S73

8

.14

7

8.1

45

8

.13

2

8.1

27

8

.12

4

7.5

48

7

.53

5

7.5

30

7

.52

5

7.5

14

7

.51

2

7.5

08

7

.45

3

7.4

33

7

.41

9

7.4

15

7

.26

0

2

.03

7 6

.00

1.9

4

0.9

9 1

.96

10 8 6 4 2 0 PPM

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S74

19

6.9

07

13

4.8

77

13

2.3

27

13

0.0

36

12

8.1

22

77

.31

5 7

7.0

00

76

.68

1

60

.32

3

31

.49

3

200 150 100 50 0 PPM

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S75

8

.09

4

8.0

77

8

.07

3

7

.54

9

7.5

46

7

.53

0

7.5

12

7

.45

1

7.4

31

7

.41

2

2

.37

6

2.3

67

2

.35

8

2.3

41

2

.33

2

2.3

24

2

.22

0

2.1

99

2

.16

8

1.8

25

1

.81

7

1.8

03

1

.79

3

1.7

70

1

.59

4

1.5

74

1

.55

9

1.5

34

1

.52

4

1.5

16

1

.41

0

1.4

03

1

.39

0

1.3

81

2.0

0

1.0

4 2

.02

2.0

8 1

.93

2.1

1 3.0

5 1

.05

10 8 6 4 2 0 PPM

OBr

9d

Page 76: Efficient Bromination of Olefins, Alkynes, and Ketones ... · Typical procedure for dibromination of olefins and alkynes: Olefin 1 or alkyne 6 (0.5 mmol) and DMSO (43 μL, 0.6 mmol)

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19

7.4

10

13

5.7

90

13

1.9

69

12

9.7

17

12

8.0

64

77

.32

8 7

7.0

12

76

.69

4 6

7.9

04

38

.19

5

24

.89

9 2

3.4

86

200 150 100 50 0 PPM

OBr

9d