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why we can not do direct nitration of aniline

Answer Posted / chemist

Aniline have nh2 group which has a lone pair of electron and hence act as a base if direct nitration is occurred nh2 becomes protonated due to lone pair of electrons and become nh3+ and become electro withdrawing group so formed meta product instead of ortho and para so firstly acetylation take place and then nitration occur for ortho and para product

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