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Under which of the following reaction co...

Under which of the following reaction condidiotns, aniline give p-nitro derivative as the major product?

A

Acetyl chloride/pyridine followed by reaction with conc. `H_(2)SO_(4)+"conc."HNO_(3)`

B

Acetic anhydride/pyridine followed by conc. `H_(2)SO_(4)+"conc."HNO_(3)`

C

Dil. HCl followed by reaction with conc. `H_(2)SO_(2)+"conc."HNO_(3)`

D

Reaction with conc. `HNO_(3)+"conc."H_(2)SO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
A, B
Aniline or reaction with acetyl chloride or acetic anhydride in the presence of pyridine produces N-acetyl aniline is ortho, para directing group which on further reaction with nitratng mixture `(conc.HNO_(3)+conc.H_(2)SO_(4))` produces p-nitroaniline preferentially as shown below.
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