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  4. When benzaldehyde (or any other aromatic aldehyde) is heated with anhydride of an aliphatic acid (containing two α -hydrogen atoms) in presence of its sodium salt, condensation takes place to form an unsaturated carboxylic acid. This reaction is called

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Q. When benzaldehyde (or any other aromatic aldehyde) is heated with anhydride of an aliphatic acid (containing two $\alpha $ -hydrogen atoms) in presence of its sodium salt, condensation takes place to form an unsaturated carboxylic acid. This reaction is called

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Solution:

When benzaldehyde (or any other aromatic aldehyde) is heated with anhydride of an aliphatic acid (containing two $\alpha $ -hydrogen atoms) in presence of its sodium salt, condensation takes place to form an unsaturated carboxylic acid. This reaction is called Perkin reaction.
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