JEE PYQ: Aromatic Compounds Question 13
Question 13 - 2020 (09 Jan Shift 1)
Which of these will produce the highest yield in Friedel-Crafts reaction?
(1) Benzamide ($\text{C}_6\text{H}_5\text{CONH}_2$)
(2) Phenol ($\text{C}_6\text{H}_5\text{OH}$)
(3) Chlorobenzene ($\text{C}_6\text{H}_5\text{Cl}$)
(4) Aniline ($\text{C}_6\text{H}_5\text{NH}_2$)
Show Answer
Answer: (3)
Solution
Aniline and phenol form complexes with Lewis acid $\text{AlCl}_3$ (deactivating it). Benzamide has a strongly deactivating group. Chlorobenzene works best.