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The reactivity of carboxylic acid deriva...

The reactivity of carboxylic acid derivative from highest to lowest reactivity is

A

acid anhydride `gt` acid chloride `gt` ester`gt`amide

B

acid chloride `gt` acid anhydride `gt`ester `gt` amide

C

acid anhydride `gt`ester `gt` amide `gt`acid chloride

D

amide `gt` ester `gt` acid anhydride `gt` acid chloride

Text Solution

Verified by Experts

The correct Answer is:
B
When acyl chlorides react, the leaving group is a chloride ion. When acid anhydrides react, the leaving group is a carboxylic acid or a carboxylate ion. When esters react, the leaving group is an alcohol, and when amides react, the leaving group is an amine (or ammonia). Ofall of these basis, chloride ions are the weakest bases and acyl chlorides are the most reactive acyl compounds. Amines (or ammonia) are the strongest bases and so amides are the least reactive acyl compounds.
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