Stephon reduction reaction
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Posted by Chakshu Sharma 2204 6 years, 11 months ago
- 3 answers
Yogita Ingle 6 years, 11 months ago
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. The hydrolysis of this intermediate with water gives the corresponding aldehyde.
R-CN {tex}\xrightarrow[{HCl}]{SnCl_2}{/tex} [R-CH=NH2+ ][Cl-] {tex}\;\xrightarrow{H_2o}{/tex} R-CHO
Example : Methyl cyanide to acetaldehyde preparation by stephen’s reaction is as follows:
CH3CN + 2[H] {tex}\xrightarrow[{HCl}]{SnCl_2}{/tex} CH3-CH-NH {tex}\;\xrightarrow{H_2o}{/tex}CH3CHO + NH3
Aarjan Ranjan 6 years, 11 months ago
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Kk Jangid 6 years, 11 months ago
=RCHO
1Thank You