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Assertion(A) Acylation of amines gives a...

Assertion(A) Acylation of amines gives a monsubstituted product whereas alkulation of amines gives polysubstitues product.
Reason(R ) Acyl group sterically hinders the apprach of further acyl group

A

Both assertion and reason are wrong.

B

Both assertion and reason are correct statements but reason is not correct explanation of assertion.

C

Assertion is correct statement but reason is wrong statement.

D

Both assertion and reason are correct statements and reason is correct explanation of assertion.

Text Solution

Verified by Experts

The correct Answer is:
C
Correct reason. Due to delocalization of the lone pair of electrons of the N-atom over the carbonyl group in the acyl derivative, the electron density on the N-atom decreases to such an extent that it does not act as a nucleophile at all and hence does not react with another molecule of the acylating agent.
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Knowledge Check

  • Methylation of methyl amine gives 1^(st) product as

    A
    `(CH_(3))_(3) N`
    B
    `(CH_(3))_(2) NH`
    C
    `(CH_(3))_(4) N^(+) I^(-)`
    D
    both (a) and ( b)

  • Assertion : Carbxoylic acids donot give characteristic reactions of carbonyl group. Reason : The carbonyl group is sterically hindered in carboxylic acid.

    A
    If both assertion and reason are correct and reason is correct explanation for assertion.
    B
    If both assertion and reason are correct but reason is not correct explanation for assertion.
    C
    If assertion is correct but reason is incorrect.
    D
    If assertion and reason are both incorrect.

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    A
    Both (A) and (R ) true and (R ) is the correct explanation of (A).
    B
    Both (A) and (R ) are true but (R ) is not correct explanation of (A).
    C
    (A) is true but (R ) is false.
    D
    (A) is false but (R ) is true.