Identify the reagent 'R' used in the following reaction C_6H_5COCl R C_6H_5CHO + HCl

MHT CET 2026 Chemistry question

Identify the reagent 'R' used in the following reaction

(A)CO, HCl
(B), Pd – Correct
(C)DIBAI - H
(D)

Answer: (B)

Solution

Conversion of an acyl chloride into the aldehyde with the same number of carbons is the Rosenmund reduction: the acid chloride is hydrogenated over palladium supported on barium sulphate, partially poisoned with sulphur or quinoline so that the aldehyde is not further reduced to the alcohol: C_6H_5COClH_2$

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Question ID VK-100437