Question

The reagent used for Friedel-Crafts reaction is

• A. dry ether
• B. $AlC{l}_3$
• C. anhydrous $AlC{l}_3$
• D. $P_2{O}_5$

Answer 1

Answer: (C)

(i) Dry ether is used in Wurtz reaction. (ii) ${\text{P}}_{\text{2}}{\text{O}}_{\text{5}}$ is used in dehydration reactions. (iii) Anhydrous $\text{AlC}{\text{l}}_{\text{3}}$ or anhydrous $\text{FeC}{\text{l}}_{\text{3}}$ are used in Friedel-Craft reaction. These are Lewis acids which help in formation of electrophile. Friedel-Craft reaction is used for alkylation of aromatic compounds.