Question

Catalyst $SnC{l}_2/HCl$ is used in

• A. Stephen's reduction
• B. Cannizzaro reaction
• C. Clemmensen's reduction
• D. Rosenmund's reduction

Answer 1

The correct option is A Stephen's reduction

Catalyst $SnC{l}_2/HCl$ is used in $\text{Stephen's reaction.}$ which helps in formation of nascent hydrogen on reacting with acid. The Stephen's reaction is used to prepare aldehydes from nitriles or cyanides. The reduction of nitriles with stannous chloride and hydrogen chloride in ethyl acetate solvent produces imine intermediate