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  4. The formation of aldehyde from alkyl cyanide is related with the name

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Q. The formation of aldehyde from alkyl cyanide is related with the name

CMC MedicalCMC Medical 2010

Solution:

The formation of aldehyde from alkyl cyanide takes place as $ \underset{\text{alkyl}\,\,\text{cyanide}}{\mathop{R-C\equiv N+2H}}\,\xrightarrow[+HCl]{SnC{{l}_{2}}}\underset{\text{aldimine}\,\,\text{hydrochloride}}{\mathop{RCH=NH\cdot HCl}}\, $ $ \xrightarrow{{{H}_{2}}O}\underset{\text{aldehyde}}{\mathop{RCHO}}\,+N{{H}_{4}}Cl $ This reaction is known as Stephens reaction.