JEE PYQ: Aromatic Compounds Question 5
Question 5 - 2021 (25 Feb Shift 2)
The correct sequence of reagents used in the preparation of 4-bromo-2-nitroethyl benzene from benzene is:
(1) $\text{CH}_3\text{COCl/AlCl}_3$, $\text{Br}_2/\text{AlBr}_3$, $\text{HNO}_3/\text{H}_2\text{SO}_4$, $\text{Zn/HCl}$
(2) $\text{CH}_3\text{COCl/AlCl}_3$, $\text{Zn-Hg/HCl}$, $\text{Br}_2/\text{AlBr}_3$, $\text{HNO}_3/\text{H}_2\text{SO}_4$
(3) $\text{Br}_2/\text{AlBr}_3$, $\text{CH}_3\text{COCl/AlCl}_3$, $\text{HNO}_3/\text{H}_2\text{SO}_4$, $\text{Zn/HCl}$
(4) $\text{HNO}_3/\text{H}_2\text{SO}_4$, $\text{Br}_2/\text{AlCl}_3$, $\text{CH}_3\text{COCl/AlCl}_3$, $\text{Zn-Hg/HCl}$
Show Answer
Answer: (2)
Solution
Acylation → Clemmensen reduction → Bromination → Nitration.
BETA
