Consider the reaction:

RCHO+NH2NH2 —> RCH=N-NH2

What sort of reaction is it?

  • Option 1)

    Electrophilic addition - elimination reaction

  • Option 2)

    Free radical addition - elimination reaction

  • Option 3)

    Electrophilic substitution - elimination reaction

  • Option 4)

    Nucleophilic addition - elimination reaction

 

Answers (1)

As learnt in

Chemical properties of aldehydes and ketones -

Undergo nucleophilic addition reactions at carbon-oxygen double bond, hybridization of carbon changes from sp2 to  sp2.  Aldehydes are more reactive than ketones due to steric hindrance and  +I effect of an alkyl group.

-

 

 and

Addition of ammonia and its derivatives with aldehydes and ketones -

Product formation is favoured due to rapid dehydration of the intermediate to form  > C = NG

G\:\:may\:be\:\:-OH,\:\:-NH_{2},\:\:-NHC_{6}H_{5},\:\:-NHCONH_{2},\:\:etc

- wherein

 

 Addition product is formed and a water molecule is eliminated.


Option 1)

Electrophilic addition - elimination reaction

This option is incorrect

Option 2)

Free radical addition - elimination reaction

This option is incorrect

Option 3)

Electrophilic substitution - elimination reaction

This option is incorrect

Option 4)

Nucleophilic addition - elimination reaction

This option is correct

Preparation Products

JEE Main Rank Booster 2021

This course will help student to be better prepared and study in the right direction for JEE Main..

₹ 13999/- ₹ 9999/-
Buy Now
Knockout JEE Main April 2021 (Subscription)

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 4999/-
Buy Now
Knockout JEE Main April 2021

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 22999/- ₹ 14999/-
Buy Now
Knockout JEE Main April 2022

An exhaustive E-learning program for the complete preparation of JEE Main..

₹ 34999/- ₹ 24999/-
Buy Now
Knockout BITSAT 2021

It is an exhaustive preparation module made exclusively for cracking BITSAT..

₹ 4999/- ₹ 2999/-
Buy Now
Exams
Articles
Questions