Q61 · CSIR-NET Chemistry, June 2019

Paper: CSIR-NET June 2019 · Subject: Organic Chemistry · Chapter: Photochemical Reactions · Topic: Photocycloaddition · Marks: 2 · Difficulty: Hard

Structures of the products A and B in the following photo-deprotection reactions are:
(a)A= Option (a) structure 1 of 2, ABC26OR1083 B = Option (a) structure 2 of 2, ABC26OR1083
(b)A= Option (b) structure 1 of 2, ABC26OR1083 B = Option (b) structure 2 of 2, ABC26OR1083
(c)A= Option (c) structure 1 of 2, ABC26OR1083 B = Option (c) structure 2 of 2, ABC26OR1083
(d)A= Option (d) structure 1 of 2, ABC26OR1083 B = Option (d) structure 2 of 2, ABC26OR1083
Answer
Answer: A ✓ checked by 4AB · confidence low
Explanation
The o-nitrobenzyl group comes off by photo-redox and leaves o-nitrosobenzaldehyde. The structures drawn in the options for this question are partly garbled; the printed key gives (a).

Study loop for Photochemical Reactions

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