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how do you prepapre meta-bromonitrobenzene from benzene

how do you prepapre meta-bromonitrobenzene from benzene

Grade:12

1 Answers

Umakant biswal
5359 Points
5 years ago
You are trying to make a para compound, so the trick here is to recognize that bromine is an ortho-para director (albeit a weak one) and nitro is a meta director. Therefore, you want to add the bromine first and then the nitro.
so, the reaction will be 
1) Benzene + Br2 + FeBr3 => Bromobenzene
2) Bromobenzene + HNO3 +H2SO4 (catalytic) => 1,2 bromonitrobenzene + 1,4 bromonitrobenzene
HOPE IT CLEARS 
ALL THE BEST ..

 

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