Discussion
In aldol condensation reaction, 1, 3-diphenylprop-2-en-1--one is obtained as major product in the reaction between
Answer: B
The reactants are benzaldehyde and acetophenone.
1,3-Diphenylprop-2-en-1-one is C6H5CO-CH=CH-C6H5 (chalcone). It forms by a crossed aldol (Claisen-Schmidt) condensation: the enolate of acetophenone, C6H5COCH3, adds to benzaldehyde, which has no alpha-hydrogen, and the product loses water to give the conjugated enone.
Benzophenone has no alpha-hydrogens, so with benzaldehyde neither partner can form an enolate. Propan-2-one or butan-2-one with benzaldehyde give products with methyl or ethyl groups, not a second phenyl ring, and acetophenone with propan-2-one gives no benzylidene unit.
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