2.Classification

Mono-, di-, tri-, and polyhydric compounds

Alcohols and phenols can be classified based on the number of hydroxyl groups they contain in their structure.

Hybridization of carbon atom

Monohydric alcohols can be further classified based on the hybridization of the carbon atom to which the hydroxyl group is attached.

Primary, secondary, and tertiary alcohols

Alcohols can be classified as primary, secondary, or tertiary based on whether the hydroxyl group is attached to a primary, secondary, or tertiary carbon atom.

Allylic alcohols

Alcohols in which the hydroxyl group is attached to an allylic carbon, which is adjacent to a carbon-carbon double bond.

Benzylic alcohols

Alcohols in which the hydroxyl group is attached to a carbon atom next to an aromatic ring.

Compounds containing Csp2OH bond

Alcohols in which the hydroxyl group is bonded to a carbon-carbon double bond.

Vinylic alcohol

A type of alcohol in which the hydroxyl group is attached to a vinylic carbon.

Phenols

Mono-, di-, and trihydric phenols are classified based on the number of hydroxyl groups they contain.

Simple and symmetrical ethers

Ethers in which the alkyl or aryl groups attached to the oxygen atom are the same.

Mixed or unsymmetrical ethers

Ethers in which the two groups attached to the oxygen atom are different.