Question
Discuss the classification of monohydric alcohols containing Csp3-OH bond.
✓
Answer
→ Csp3 - OH bond: In this class of alcohols. the -OH group is attached to an sp³ hybridised 3 carbon atom of an alkyl group. They are further classified as follows:
→ Primary, secondary and tertiary alcohols: In these three types of alcohols, the -OH group is attached to primary, secondary and tertiary carbon atom, respectively as depicted below :
→ Allylic alcohols : In these alcohols, the -OH group is attached to an sp3 hybridised carbon next the carbon-carbon double bond, that is to an allylic carbon. For example,
→ Benzylic alcohols : In these alcohols, the -OH group is attached to an sp3 - hybridised carbon atom next to an aromatic ring. For example,
→ Allylic and benzylic alcohols may be primary, secondary or tertiary.
→ Primary, secondary and tertiary alcohols: In these three types of alcohols, the -OH group is attached to primary, secondary and tertiary carbon atom, respectively as depicted below :
→ Allylic alcohols : In these alcohols, the -OH group is attached to an sp3 hybridised carbon next the carbon-carbon double bond, that is to an allylic carbon. For example,
→ Benzylic alcohols : In these alcohols, the -OH group is attached to an sp3 - hybridised carbon atom next to an aromatic ring. For example,
→ Allylic and benzylic alcohols may be primary, secondary or tertiary.
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