Alkyl cyanides undergo Stephen reduction to produce

Alkyl cyanides undergo Stephen reduction to produce
  1. aldehyde
  2. secondary amine
  3. primary amine
  4. amide

Solution

Stephen reduction is partial reduction of alkyl or aryl cyanides to give corresponding aldehydes with a suspension of anhydrous stannous chloride in ether. $\mathrm{SnCl}_{2}+2 \mathrm{HCl} \longrightarrow \mathrm{SnCl}_{4}+2[\mathrm{H}]$

Asked in: MHT CET Full Test 1

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