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Aldehydes, Ketones and Carboxylic Acids — Chemistry STD 12 Science — Question

Rajasthan BoardEnglish MediumSTD 12 ScienceChemistryAldehydes, Ketones and Carboxylic Acids2 Marks
Question
Explain Stephen reaction in brief.
✓

Answer

→ Nitriles are reduced to corresponding imine with stannous chloride in the presence of hydrochloric acid, which on hydrolysis give corresponding aldehyde.
$RCN + SnCl _2+ HCl \longrightarrow RCH = NH \xrightarrow{ H _3 O ^{+}} RCHO$
→ This reaction is called Stephen reaction.

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