The correct sequence of reagents used in the preparation of 4 -bromo- 2 -nitroethylbenzene from benzene is :

The correct sequence of reagents used in the preparation of 4 -bromo-2-nitroethylbenzene from benzene is :
  1. CH3COCl/AlCl3,Br2/AlBr3,HNO3/H2SO4,Zn/HCl
  2. CH3COCl/AlCl3,Zn-Hg/HCl,Br2/AlBr3,HNO3/H2SO4
  3. HNO3/H2SO4,Br2/AlCl3,CH3COCl/AlCl3,Zn-Hg/HCl
  4. Br2/AlBr3,CH3COCl/AlCl3,HNO3/H2SO4,Zn/HCl

Solution

Benzene is an aromatic compound which shows the characteristic reaction of electrophilic aromatic substitution reactions. This is because the reaction is initiated by an electrophile.

Benzene reacts with CH3​Cl in presence of anhydrous AlCl3​ to give Toulene. This is fridel crafts Alkylation and an electrophillic substitution.

Asked in: JEE Main 2021 (25 Feb Shift 2)

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