JEE PYQ: Aromatic Compounds Question 11
Question 11 - 2020 (07 Jan Shift 2)
Consider reactions (A)-(D). Which of these are possible?
(A) Benzene + chlorobenzene → anhyd. $\text{AlCl}_3$ (B) Benzene + $\text{Cl}_2$ (excess) → anhyd. $\text{AlCl}_3$, dark → hexachlorobenzene (C) Benzene + $\text{CH}_2=\text{CH-Cl}$ → $\text{AlCl}_3$ → styrene (D) Benzene + $\text{CH}_2=\text{CH-CH}_2\text{Cl}$ → anhyd. $\text{AlCl}_3$ → allylbenzene
(1) (A) and (B)
(2) (A) and (D)
(3) (B), (C) and (D)
(4) (B) and (D)
Show Answer
Answer: (4)
Solution
Vinyl halides and aryl halides are unreactive towards Friedel-Craft’s reaction. (A) uses aryl halide and (C) uses vinyl halide — both not possible.