• When the - OH group attached sp3 hybridised carbon is next to a C=C system, then such alcohols are known as allylic alcohols. Allylic alcohols can also be 1° , 2° or 3°.
• When the sp hybridised carbon atom containing - OH group is attached to a benzene ring, then such alcohols are classified as benzylic alcohols. Benzylic o o o alcohols can also be 1° , 2° or 3° .
