Question

What is correct about the reaction and the product?

• A. Product A is a five membered carbaldehyde
• B. the migrating group and leaving group are antiperiplanar which leads to ring contraction
• C. Formed product cannot reduce Tollen's reagent
• D. Product A undergoes Cannizzaro's reaction with $aq.KOH$

Answer 1

Answer: (A), (B)

the migrating group and leaving group are antiperiplanar which leads to ring contraction



Product (A) has cyclopentane carbaldehyde backbone. It gives Tollen's test and can also undergo aldol reaction.