Question

Aluminium chloride is used in organic chemical reactions as a catalyst. A well-know example of this is the?

• A. Friedel-Crafts reaction
• B. Markownikoff addition
• C. Grignard synthesis
• D. Pinacolone rearrangement

Answer 1

The correct option is A Friedel-Crafts reaction

Answer:- (A) Friedel-Crafts reaction

Explanation:-

Aluminum chloride $\left(Al{Cl}_3\right)$ is used as a Lewis acid catalyst for a variety of reactions. The most well-known application of $Al{Cl}_3$ is in Friedel-Crafts reactions. Friedel-Crafts alkylations generally only require a catalytic amount of $Al{Cl}_3$, whereas Friedel-Crafts acylations require greater than one equivalent of $Al{Cl}_3$. This is because the Lewis acidity of $Al{Cl}_3$ results in strong complexes with carbonyl groups