question_answer

In the following reaction, the product is

A)   

B)         

C)                  

D)  

Correct Answer: D

Solution :

[d] Cyclic 1,3-diketones give, under Clemmensen reduction, a fully reduced product along with a mono-ketone with ring contraction. The latter probably is formed through a diradical with subsequent intramolecular \[(C-C)\] bond formation and pinacol-type rearrangement.