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Question

Chemistry Question on Aldehydes, Ketones and Carboxylic Acids

In Wolff-Kishner reduction, the carbonyl group of aldehydes and ketones is converted into

A

CH2OH-CH_2OH

B

>CH2> CH_2

C

CH3-CH_3

D

CHOH-CHOH-

Answer

>CH2> CH_2

Explanation

Solution

Wolf - Kishner reduction : Aldehyde and Ketones are reduced to hydrocarbons in the presence of excess of hydrazine and strong base on heating. RCH=O+H2NNH2>[KOH][200C]RCHH2+N2+H2OR - \underset{\underset{H}{|}}{C} = O + H _{2} N NH _{2} {->[{ KOH }][{200^{\circ} C }]} R - \underset{\underset{H}{|}}{C}H _{2}+ N _{2}+ H _{2} O