New Applications of 2,4,6-Trichloro-1,3,5-triazine (TT) in Synthesis: Highly Efficient and...

2003 Deprotection Deprotection O 0345 New Applications of 2,4,6-Trichloro-1,3,5-triazine (TT) in Synthesis: Highly Effi- cient and Chemoselective Deprotection and Ring-Enlargement of Dithioacetals and Oxathioacetals. — New applications for cyanuric chloride are described. It can be used as an efficient reagent for the deprotection of dithio- and oxathioacetals (I) and (III) and the ring-enlargement of dithio- and oxathioacetals (V), (VII) and (IX) of eno- lizable ketones to the corresponding dithio- and oxathioheterocycles (VI), (VIII) and (X). — (KARIMI*, B.; HAZARKHANI, H.; Synthesis 2003, 16, 2547-2551; Dep. Chem., Inst. Adv. Stud. Basic Sci., Gava Zang, Zanjan, Iran; Eng.) — Mais 12- 069

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Transcript of New Applications of 2,4,6-Trichloro-1,3,5-triazine (TT) in Synthesis: Highly Efficient and...

Page 1: New Applications of 2,4,6-Trichloro-1,3,5-triazine (TT) in Synthesis: Highly Efficient and Chemoselective Deprotection and Ring-Enlargement of Dithioacetals and Oxathioacetals.

2003 Deprotection

DeprotectionO 0345 New Applications of 2,4,6-Trichloro-1,3,5-triazine (TT) in Synthesis: Highly Effi-

cient and Chemoselective Deprotection and Ring-Enlargement of Dithioacetals and Oxathioacetals. — New applications for cyanuric chloride are described. It can be used as an efficient reagent for the deprotection of dithio- and oxathioacetals (I) and (III) and the ring-enlargement of dithio- and oxathioacetals (V), (VII) and (IX) of eno-lizable ketones to the corresponding dithio- and oxathioheterocycles (VI), (VIII) and (X). — (KARIMI*, B.; HAZARKHANI, H.; Synthesis 2003, 16, 2547-2551; Dep. Chem., Inst. Adv. Stud. Basic Sci., Gava Zang, Zanjan, Iran; Eng.) — Mais

12- 069

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