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NEET 2023, Chemistry Q31: Properties and Important Reactions of Aldehydes & Ketones

NEET2023Chemistry
Q.

Complete the following reaction:

[C] is _____.

  1. A

    1

  2. B

    2

  3. C

    3

  4. D

    4

Solution

Cyclohexanone adds HCN to form the cyanohydrin [B]: 1-hydroxy-1-cyano cyclohexane.

Concentrated with heat then does two things simultaneously: it dehydrates the tertiary alcohol to introduce a C=C double bond and hydrolyses the nitrile to a carboxylic acid.

Result: cyclohex-1-ene-1-carboxylic acid.

Concept behind this question

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