MEDIUMMCQ SINGLEIChO (Chemistry Olympiad)Organic ChemistryAldehydes and ketonesPhysical and chemical properties of Aldehydes &Ketones

Reduction of acetonitrile in presence of SnCl2/HCl, followed by hydrolysis gives :

A.HCHO

B.CH3CHO✓ Correct

C.CH3CH2CHO

D.CH3COCH3

Explanation

In Stephen reduction, the aldehyde is formed from nitriles, by reacting the nitriles with stannous chloride in the presence of hydrochloric acid. 퐶퐻3 −퐶≡푁+ 푆푛퐶푙2 + 퐻퐶푙 퐷푟푦 퐸푡ℎ푒푟 → 퐶퐻3퐶퐻= 푁퐻. 퐻퐶푙 →퐶퐻3퐶퐻푂+ 푁퐻4퐶푙

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