JEE Main · 2019 · 09 Apr 2019 · Shift 2 · Aldehydes Ketones and Carboxylic Acids

The major products A and B for the following reactions are, respectively

(A)(see structure)
✓ Correct
(B)(see structure)
A
B
(C)(see structure)
(D)(see structure)

Answer: (A)

Solution

Cyclohexanone first adds HCN, supplied by

NaCN / HCl

, across its carbonyl to give the cyanohydrin, a carbon bearing both an

- OH

and a

- CN

group (product A). Catalytic hydrogenation with

H X_{2} / Ni

then reduces that nitrile to a primary amine, leaving a molecule carrying both a hydroxyl and a

- CH2NH2

group (product B). The pair that shows the cyanohydrin followed by the amino alcohol is the correct set of products.

JEE Main · 2019 · 09 Apr 2019 · Shift 2 · Single correct option

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