Q15 · CSIR-NET Chemistry, June 2015

Paper: CSIR-NET June 2015 · Subject: Organic Chemistry · Chapter: Reagents, Reaction Mechanisms & Named Reactions · Topic: Reagents, Reaction Mechanisms & Named Reactions – General · Marks: 2 · Difficulty: Easy

The major product formed in following reaction sequence is Question structure 1 of 2, ABC26OR0255

(a)

Option (a) structure 2 of 3, ABC26OR0255

B =

Option (a) structure 3 of 3, ABC26OR0255

(b)

Option (b) structure 2 of 4, ABC26OR0255

Option (b) structure 4 of 4, ABC26OR0255

(c)

Option (c) structure 2 of 3, ABC26OR0255

B =

Option (c) structure 3 of 3, ABC26OR0255

(d)

Option (d) structure 2 of 4, ABC26OR0255

Option (d) structure 4 of 4, ABC26OR0255

Answer

Answer: A ✓ checked by 4AB · confidence medium

Explanation

Sharpless kinetic resolution with 0.5 equivalent of oxidant: the matched enantiomer of the secondary allylic alcohol is epoxidised to the erythro epoxy alcohol A, and the unreacted enantiomer B is recovered (a).

Study loop for Reagents, Reaction Mechanisms & Named Reactions

1. Practise the PYQsPrevious-year questions, with answers

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