JEE Main Chemistry question

Chemistry Organic Chemistry - Some Basic Principles and Techniques JEE Main

[IIT 2005] In the reaction *p*-CH₃–C₆H₄–CHO + X —CH₃COONa, H₂O→ *p*-CH₃–C₆H₄–CH=CH–COOH, the reagent X is

(A)CH₃COOH
(B)BrCH₂COOH
(C)(CH₃CO)₂O (acetic anhydride)Correct
(D)OHC–COOH

Answer: (C)

Solution

This is a Perkin condensation: an aromatic aldehyde reacts with an aliphatic acid anhydride (acetic anhydride) in

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Question ID VK-140097