Question

Which of the following is used as a solvent in the Friedel Crafts reaction?

• A. Benzene
• B. Methane
• C. Nitrobenzene
• D. Hydrochloric acid

Answer 1

The correct option is C

Nitrobenzene

Explanation:

• A Friedel-Crafts reaction is a type used to introduce a new substituent to an aromatic benzene ring by electrophilic substitution reactions.
• It usually involves alkylation and acylation reactions.
• 
• In any organic process, the solvent is chosen in such a way that it does not interfere with the chemical reaction and does not result in the development of unwanted side reactions or products.
• Nitrobenzene has ${\mathrm{NO}}_2$ group which acts as a strong electron-withdrawing group and deactivates the benzene ring.
• The reaction will only occur at the reactant we will use, no side products will be obtained.
• So, it is a good solvent to use in Friedel-Crafts reactions.

Therefore, Option (C) is correct. Nitrobenzene is used as a solvent for Friedel-Crafts reactions.