Chemistry - Carboxylic acid and their Derivatives Question with Solution | TestHub

Step 1: Identify the reaction type and reactant

The reaction is an intramolecular Kolbe electrolysis of a disodium carboxylate salt. The reactant is a 1,2-disubstituted 1,2-dihydronaphthalene with carboxylate groups (-COOK) on the adjacent ring carbons.

Step 2: Understand the Kolbe electrolysis mechanism

Kolbe electrolysis involves the anodic oxidation of carboxylate ions to form carboxyl radicals, followed by decarboxylation to form alkyl radicals. These radicals then couple to form a new C-C bond.

Step 3: Determine the product of the reaction

In this specific intramolecular reaction, two carboxylate groups on adjacent carbons of the dihydronaphthalene ring are involved. After decarboxylation, the two resulting radicals are on adjacent carbons. These radicals couple to form a double bond between the two carbons, which results in the formation of an aromatic naphthalene ring system.

Answer:

The correct option is (A) Naphthalene