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Question: Answered & Verified by Expert

The increasing order of the reactivity of the following with LiAlH4 is:

(A)

(B)

(C)

(D)

ChemistryCarboxylic Acid DerivativesJEE MainJEE Main 2019 (12 Jan Shift 2)
Options:
  • A B<A<D<C
  • B A<B<C<D
  • C A<B<D<C
  • D B<A<C<D
Solution:
2380 Upvotes Verified Answer
The correct answer is: A<B<D<C

In the mentioned structures H- will get added to the carbon having slight positive charge.

Presence of Cl increases the positive charge whereas an electron donating group like NH2 decreases the tendency.

Rate of reaction -M or -I group

Rate of reaction 1+M and 1+I

Hence, the correct order will be:

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