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Question

Which of the following is more basic than aniline?

A
Diphenylamine
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B
Triphenylamine
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C
p-nitroaniline
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D
Benzylamine
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Solution

The correct option is D Benzylamine
The lone pairs on the nitrogen atom in benzylamine is not delocalised in the benzene ring. Thus, due to higher electron density, ease of donation of lone pair of electron is more and basic character is higher.
In other options, lone pair of N is involved in the ring and less available for donation, hence less basic than benzylamine.

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