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In a set of reactions acetic acid yielded a product D. CH3COOH → SOCl2 → A → Benzene → B → HCN → C → H2O/H+ → D The structure of D would be:

1. COOH C—CH3 OH
2. CN C—CH3 OH
3. OH CH2—C—CH3 CN
4. C—COOH CH3

Correct answer: COOH C—CH3 OH

Solution

The sequence involves converting acetic acid to acetyl chloride (A), then forming acetophenone (B) via Friedel-Crafts acylation with benzene. Reaction with HCN gives a cyanohydrin (C), which hydrolyzes to a hydroxyl carboxylic acid (D). The structure of D matches option A.

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