Question:

Sodium phenoxide when heated with \(\mathrm{CO_2}\) under pressure at \(125^\circ\mathrm{C}\) yields a product which on acetylation produces C.

The major product C would be :

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This is the Kolbe-Schmitt reaction giving salicylic acid, whose acetylation gives aspirin.
Updated On: Nov 11, 2026
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The Correct Option is A

Solution and Explanation

Sodium phenoxide + \(\mathrm{CO_2}\) at \(125^\circ\mathrm{C}\) and 5 atm (Kolbe-Schmitt reaction) gives, after acidification, ortho-hydroxybenzoic acid (salicylic acid), B.
Acetylation of the phenolic OH of B with \(\mathrm{Ac_2O}\) gives 2-acetoxybenzoic acid (acetylsalicylic acid, aspirin), C.
This is the structure with \(\mathrm{OCOCH_3}\) and \(\mathrm{COOH}\) on adjacent (ortho) carbons, option (1).
Answer: (1) 2-acetoxybenzoic acid (aspirin): ortho \(\mathrm{OCOCH_3}\) and \(\mathrm{COOH}\)
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