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  4. Alkyl cyanides undergo Stephen reduction to produce

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Q. Alkyl cyanides undergo Stephen reduction to produce

NTA AbhyasNTA Abhyas 2020Amines

Solution:

An alkyl cyanide is dissolved in ether or better in ethyl formate or ethyl acetate, and reduced with $\text{SnCl}_{\text{2}}$ and $HCl$ and then steam distilled. The whole process is called Stephen reaction. In this process, alkyl cyanide is reduced to aldehyde.

Solution

There is no analogous method for the preparation of ketones.