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The increasing order of the reactivity o...

The increasing order of the reactivity of the following with `LiAIH_4` is :



A

`(A) lt (B) lt (C) lt (D)`

B

`(A) gt (B) lt (D) lt (C)`

C

`(B) lt (A) lt (D) lt (C)`

D

`(B) lt (A) lt (C) lt (D)`

Text Solution

Verified by Experts

The correct Answer is:
B
The reactivity order of carboxylic acid derivatives depends on the leaving tendency of the leaving group. Higher the leaving tendency of the leaving group,higher will be the reactivity of the compound.
Therefore, reactivity order towards LiAlH4 is : Acid halide > Acid anhydride > Ester > Amide
`-overset(O)overset(||)C-NH_2` will do acid base reaction with Girgnard reagent.

Rate is dependent on `delta` + on carbon of
`{:("\"),("/"):}C=O` group
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