4-formyl benzoic acid on treatment with one equivalent of hydrazine followed by heating with alc. KOH gives the major product

Question

4-formyl benzoic acid on treatment with one equivalent of hydrazine followed by heating with alc. KOH gives the major product (A)  (B)  (C)  (D)

Tardigrade Admin · Accepted Answer

4-formyl benzoic acid on treatment with one equivalent of hydrazine followed by heating with ale. KOH gives 4-methyl benzoic acid the major product. <img class="img-fluid question-image" alt="image" src="https://cdn.tardigrade.in/img/question/chemistry/d71d69bf9dfa7d92a444481b9be71f60-.png" /> This reaction is known as Wolf-Kishner reduction, where the aldehyde or ketone when treated with hydrazine and KOH, get reduced to methylene group to form a hydrocarbon. This reagent doesn’t affect COOH group.

Q. 4-formyl benzoic acid on treatment with one equivalent of hydrazine followed by heating with alc. KOH gives the major product

Q. $4$ -formyl benzoic acid on treatment with one equivalent of hydrazine followed by heating with alc. $K O H$ gives the major product