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JEE Main · 2022 · 26 Jun 2022 · Shift 2 · Aldehydes Ketones and Carboxylic Acids

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The final product 'A' in the following reaction sequence
  1. (A)(see structure)
    ✓ Correct
  2. (B)(see structure)
  3. (C)(see structure)
  4. (D)(see structure)

Answer: (A)

Solution

The reaction sequence involves: (1) KCN adds to the carbonyl to form a cyanohydrin, (2) H₃O⁺/heat hydrolyzes the nitrile group to a carboxylic acid and removes the OH group, resulting in an α,β-unsaturated carboxylic acid. The final product A is the carboxylic acid shown in option (A).

JEE Main · 2022 · 26 Jun 2022 · Shift 2 · Single correct option

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