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Question:

What is the name of the following reaction?

Cannizzaro reaction

Knoevenagel's reaction

Oxymercuration demercuration reaction

Perkin reaction

Solution:

The name of the following reaction PhCHO+(CH3CO)2ONa(OAc)2→PhCH=CHCOOH is Perkin reaction. The product is cinnamic acid, an α,β-unsaturated aromatic acid. It is obtained by the aldol condensation of benzaldehyde and acetic anhydride, in the presence of sodium acetate.