Q6 · CSIR-NET Chemistry, December 2015
Paper: CSIR-NET December 2015 · Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Named Reactions · Marks: 2 · Difficulty: Medium
The major product formed in the following reaction is 
(a)
(b)
(c)
(d)
Answer
Answer: B ✓ checked by 4AB · confidence medium
Explanation
The Rh carbenoid is trapped by the ether oxygen to form an oxonium ylide, which undergoes a [1,2]-Stevens shift of the benzyl group: 2-benzyl-4,4-dimethyl-tetrahydrofuran-3-one (b).
Study loop for Reagents, Reaction Mechanisms & Named Reactions