Alcohols and Phenols
Alcohols and phenols are formed when a hydrogen atom in hydrocarbon , aliphatic and aromatic respectively , is replaced by hydroxyl group ( -OR group ).
Classification of Alcohols and Phenols
In alcohols , -OR group is attached to Sp3 hybridised carbon . These alcohols are usually classified as primary , secondary and tertiary alcohols .
Alcohols may be ( i ) monohydric-containing one – OR group ,
( ii ) dihydric-containing two – OR groups and ( iii ) polyhydric-containing three or more -OR groups .
In phenols , -OR group is attached to Sp 2 hybridised carbon . These may also be monohydric , dihydric , etc . The dihydric phenol further rosy be ortho , meta ’ or para derivative .