Q20 · CSIR-NET Chemistry, December 2012
Paper: CSIR-NET December 2012 · Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Marks: 2 · Difficulty: Medium
Under review — part of this question (a structure or an option) is not clear in the source scan. 4AB is checking it against the original book; the answer shown may change.
In the following reaction A and B are 
(a)
(b)
(c)
(d)
Answer
Under review — not yet confirmed.
Answer: A
Explanation
i-PrMgCl deprotonates oxazole at its most acidic C-2 to give 2-oxazolylmagnesium chloride (A); the Weinreb amide then gives the 2-butanoyl oxazole (B) — (a).
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