JEE Main Chemistry question

Which of the following reactions can be used to prepare ethyl isocyanide?

(A)
(B)
(C)CH_3CH_2NH_2 + CHCl_3 + KOH \xrightarrow[\Delta]{Alcohol}Correct
(D)None of the above

Answer: (C)

Solution

Alkyl halides with cyanide salts ( or ) give alkyl CYANIDES (nitriles, ) via attack through the carbon end of the ambident ion (options (a) and (b) both give propanenitrile, not an isocyanide).

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Question ID VK-150385