Freidel-Crafts Acylation

The video tutorial explains Freidel-Crafts acylation, a process similar to alkylation, involving benzene, acyl chloride, and aluminum trichloride catalyst. It details the mechanism, formation of acylium ion, and regeneration of the catalyst. The acylation product is meta-directing and deactivating due to electron withdrawal.

What is the main difference between Freidel-Crafts alkylation and acylation?

• The type of chloride used

• The type of catalyst used

• The type of aromatic substrate used

• The type of solvent used

In the Freidel-Crafts acylation mechanism, what role does aluminum trichloride play?

• It acts as a nucleophile

• It acts as a Lewis acid

• It acts as a reducing agent

• It acts as a Lewis base

What is formed when the carbon-chlorine bond is broken in the acylation mechanism?

• An acylium ion

• A carbanion

• A free radical

• A carbocation

How is aromaticity restored in the Freidel-Crafts acylation mechanism?

• By breaking a pi bond

• By breaking a sigma bond

• By forming a new pi bond

• By forming a new sigma bond

What is the byproduct formed during the Freidel-Crafts acylation reaction?

• H2O

• HCl

• CO2

• CH4

What is the directing effect of the acyl group in further EAS reactions?

• Meta-directing

• Ortho-directing

• Non-directing

• Para-directing

Why is the acyl group considered deactivating in further reactions?

• It stabilizes the intermediate

• It donates electron density

• It increases the reaction rate

• It withdraws electron density