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Question: Answered & Verified by Expert
The correct sequence of reagents used in the preparation of 4 -bromo-2-nitroethylbenzene from benzene is :
ChemistryHydrocarbonsJEE MainJEE Main 2021 (25 Feb Shift 2)
Options:
  • A CH3COCl/AlCl3,Br2/AlBr3,HNO3/H2SO4,Zn/HCl
  • B CH3COCl/AlCl3,Zn-Hg/HCl,Br2/AlBr3,HNO3/H2SO4
  • C HNO3/H2SO4,Br2/AlCl3,CH3COCl/AlCl3,Zn-Hg/HCl
  • D Br2/AlBr3,CH3COCl/AlCl3,HNO3/H2SO4,Zn/HCl
Solution:
1757 Upvotes Verified Answer
The correct answer is: CH3COCl/AlCl3,Zn-Hg/HCl,Br2/AlBr3,HNO3/H2SO4

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.

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