The following question was given in an exam.Which of the following undergo aldol condensation ?
Given answer : a,b,c
My answer: b,c
My Logic :
Cyclopenta-2,4-dienecarbaldehyde(1) on reaction with a base gives carbanion whose resonance structures are 1a to 1e as shown below.This anion is an aromatic anion .Being stable ,tis aromatic anion now in oresence of base would undergo Cannizaro Reaction to give 3 and 4.
My question is, will cyclopenta-2,4-dienecarbaldehyde undergo aldol condensation?