MHT CET 2024 Chemistry question

Which reagent from following is used for preparation of aliphatic aldehyde from nitriles?

(A) in
(B) in acetic anhydride
(C)Correct
(D) anhydrous

Answer: (C)

Solution

Nitriles are reduced by stannous chloride and HCl to an imine hydrochloride, which on acid hydrolysis gives the aldehyde (Stephen reaction): . Hence (C). Option (A), in (Etard reaction)

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Question ID VK-096833