Aromatic Aldehydes Ketones and Acids - Result Question 2

2. The major product of the following reaction is

(2019 Main, 12 April I)

(a)

(b)

(c)

(d)

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Answer:

Correct Answer: 2. (b)

Solution:

  1. The major product formed in the reaction is as follows :

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Primary alcohol readily oxidised to corresponding carboxylic acid with oxidising agent, chromium trioxide $\left(\mathrm{CrO}_3\right)$ in acidic medium.

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$-OH$ group of carboxylic acid get substituted by $-Cl$ in presence of $\mathrm{SOCl}_2$ (Thionyl chloride).

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Further, heating of product leads to intramolecular cyclisation.

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