question_answer

The conversion of nitriles to aldehydes with stannous chloride in presence of \[HCl\] is known as

A)  Rosenmund reduction

B)  Stephen reduction

C)  Etard reaction

D)  Wolf Kishner reduction

Correct Answer: B

Solution :

                When reduction of nitrites is specifically carried out with \[SnC{{l}_{2}}/HCl\], it is called  Stephens method. \[\underset{Alkyl\text{ }nitriles}{\mathop{R-C\equiv N}}\,\xrightarrow{SnC{{l}_{2}}/HCl}R-\underset{\begin{smallmatrix}  | \\  \underset{I\text{ }mino}{\mathop{H}}\, \end{smallmatrix}}{\mathop{C}}\,=\underset{\begin{smallmatrix}  | \\  \underset{chloride}{\mathop{H}}\, \end{smallmatrix}}{\mathop{N}}\,:HCl\]