Why does acetylation of $- N H_{2}$ group of aniline reduce its activity ?

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Solution

The electron density on nitrogen decreases with the acetylation of $- N H_{2}$ group of aniline and thus activation effect reduces.

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Q. Give reasons for the following:
(a) Acetylation of aniline reduces its activation effect.
(b)

C H_{3} N H_{2}

is more basic than

C_{6} H_{5} N H_{2}

N H_{2}

is O/P directing group,
yet aniline on nitration gives a significant amount of m - nitroaniline.

Give reasons of the following:

Acetylation of aniline reduces its activation effect.

A : Nitration of aniline can only be done by protecting $- N H_{2}$ group through acetylation.
R : Acetylation of aniline results in the increase of electron density at the benzene ring.

- N H_{2}

group in aniline is:

Q. Why can't Lialh4 be used to reduce nitro benzene to aniline. It is a strong so shouldn't it reduce the nitro group

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Why does acetylation of −NH2 group of aniline reduce its activity ?

The electron density on nitrogen decreases with the acetylation of −NH2 group of aniline and thus activation effect reduces.

Why does acetylation of $- N H_{2}$ group of aniline reduce its activity ?

The electron density on nitrogen decreases with the acetylation of $- N H_{2}$ group of aniline and thus activation effect reduces.