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JEE Advanced2023ChemistryAlcohols Phenols and EthersActual

In the following reactions, P , Q , R and S are the major products. The correct statement about P , Q , R and S is

Options

  1. AP is a primary alcohol with four carbons.
  2. BQ undergoes Kolbe's electrolysis to give an eight-carbon product.
  3. CR has six carbons and it undergoes Cannizzaro reaction.
  4. DS is a primary amine with six carbons.

Correct answer

B. Q undergoes Kolbe's electrolysis to give an eight-carbon product.

Step-by-step solution

The isobutyl chloride on reaction with magnesium metal in dry ether give respective Grignard reagent. Grignard reagents produce hydrocarbon on reaction with water. Grignard reagent can react with carbon dioxide and acidic water to give respective carboxylic acid. Carboxylic acid gives carboxylate with sodium hydroxide.This salt of carboxylic acid undergo Kolbe's electrolysis to give hydrocarbon as shown below. Kolbe electrolysis : The two isobutyl radicals formed in the above reaction combines to give a hydroca

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