Q26 · CSIR-NET Chemistry, December 2013

Paper: CSIR-NET December 2013 · Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Marks: 2 · Difficulty: Medium

In the following transformation, the reagent A and the major product B, respectively, are Question structure 1 of 3, ABC26OR0225 $\xrightarrow{\ \text{A}\ }$ Question structure 2 of 3, ABC26OR0225 Question structure 3 of 3, ABC26OR0225 → B
(a)Option (a) structure 1 of 2, ABC26OR0225 and Option (a) structure 2 of 2, ABC26OR0225
(b)Option (b) structure 1 of 2, ABC26OR0225 and Option (b) structure 2 of 2, ABC26OR0225
(c)Option (c) structure 1 of 2, ABC26OR0225 and Option (c) structure 2 of 2, ABC26OR0225
(d)Option (d) structure 1 of 2, ABC26OR0225 and Option (d) structure 2 of 2, ABC26OR0225
Answer
Answer: D ✓ checked by 4AB · confidence high
Explanation
m-CPBA (A) gives the pyridine N-oxide. In the Boekelheide rearrangement with Ac₂O the 2-methyl group, which is α to the N-oxide, becomes CH₂OAc, giving 3-methyl-2-(acetoxymethyl)pyridine (d).

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