Aromatic Hydrocarbons

Aromatic Hydrocarbons•Hydrocarbons with

4n+2 electrons

Aromatic Hydrocarbons•Compounds with an odd # of double bonds at every other carbon

Aromatic Hydrocarbons•The double bonds

must lie in a flat plane

Aromatic Hydrocarbons

•Most contain benzene rings or related

systems

Aromatic Hydrocarbons•All have an odor

•Most are pleasant

Drill: Name:

Aromatic Hydrocarbons

•Also called:

•Arenes

Aliphatic Hydrocarbons

•Hydrocarbons other than aromatic hydrocarbons

BenzeneC

C

C

C

C C

HH

HH

H H

Benzene

Drill: Draw propylbenzene

Benzene

Draw & name a compound with 7 carbons, 1 double

bond, & 1 triple bond

Draw & Name all the possible

isomers for C6H10

Drill: Draw:all trans-3,4,5,6,7,8-hexamethyldeca-2,4,6,8-tetraene

Naming Arenes

Naming Arenes•Use the same rules as for cyclic compounds

•Special exception will follow

Naming Arenes

1 2

3

45

6

2,3-diethyl-1-propylbenzene

Special Exceptions•Some aromatic compounds have common names

Methylbenzene

Toluene

1,4-dimethylbenzene

Xylene

Disubstituted Benzene Rings2 groups attached to a benzene ring

ortho-

meta-

para-

1,4-dimethylbenzene

para-xylene

____ benzene

R

phenyl ____

Pyr

phenylpyruvate

Name:

tight

ves

Name:

strange

dude

Name:

me Seehim

ORG CHM HW•Come up with at least one strange name based on organic nomenclature

Naphthalene

Anthracene

Phenanthrene

Lab: TomorrowReview: TuesdayTest: Wednesday

Name the compounds on

the board

Name:

Draw & name all the possible

isomers of C5H10

Draw & name all the possible

isomers of C5H8

The checkis in themail

Of course, I’ll love youin the morning