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Aldehydes, Ketones and Carboxylic Acids
Nucleophilic Addition-Elimination with Ammonia Derivatives
1 question from 1 paper, each with its answer.
- question
- 1
- paper
- 1
- of Aldehydes, Ketones and Carboxylic Acids
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Concepts tested
- Hydrazone formation
All Questions
2000 AIPMT 1 question
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First product of the reaction between RCHO and $NH_2NH_2$ : -Hydrazine is a derivative of ammonia ($H_2N-Z$ with Z = $NH_2$). It adds to the carbonyl group and then loses water (addition-elimination):
$RCHO + H_2N-NH_2 \rightarrow RCH=N-NH_2 + H_2O$
The product is a hydrazone. (In the Wolff–Kishner reduction, the hydrazone is then heated with KOH to give $RCH_3$.)
So the first product is $RCH=NNH_2$.