JEE MAIN - Chemistry (2021 - 24th February Morning Shift - No. 8)
In the following reaction the reason why meta-nitro product also formed is :
_24th_February_Morning_Shift_en_8_1.png)
–NH2 group is highly meta-directive
–NO2 substitution always takes place at meta-position
Formation of anilinium ion
low temperature
Explanation
Aniline on protonation forms anilinium ion, which is
meta-directing. So, a considerable amount of meta product is formed
alongwith o-nitroaniline and p-nitroaniline.
_24th_February_Morning_Shift_en_8_2.png)
Nitrating mixture is mixture of conc. HNO3 and a conc. H2SO4.
When aniline is reacted with nitrating mixture ortho, meta and para nitroanilines are obtained.
Aniline being basic in nature, reacts with acids to form anilinium ion which is meta directing.
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