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Question

In which of the following reaction aromatic aldehyde is treated with acid anhydride in presence of corresponding salt of the acid to give unsaturated aromatic acid.

A
Friedel-Craft's reaction
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B
Wurtz reaction
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C
None of these
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D
Perkin reaction
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Solution

The correct option is D Perkin reaction
Aromatic aldehyde on reacting with carboxylic acid anhydride in presence of salt of carboxylic acid to form α,β-unsaturated acids. This reaction is called Perkin reaction.

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