12th Class Chemistry Nitrogen Containing Compounds Question Bank 12th CBSE Chemistry Nitrogen Containing Compounds

  • question_answer
    Why does aniline even under mild conditions give 2, 4, 6 tribromoaniline instantaneously when brominated with aqueous solution of bromine?

    Answer:

                    We have studied that the amino group \[(-\overset{\centerdot \,\centerdot }{\mathop{N}}\,{{H}_{2}})\] is a highly activating group and activates the ortho and para positions in the ring due to conjugation. Bromination of aniline involves the electrophile attack of \[B{{r}^{+}}\]ion on the ring and readily takes place even on shaking aniline with aqueous solution of bromine for a few minutes. As a result, a light yellow precipitate of 2, 4, 6-tribromoaniline is formed. For more details, consult section 14.10.


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