Show two pairs of reagents that would each result in formation of the following compound:

A Friedel Crafts acylation is the reaction that takes place between acylating agent (acetyl chloride) and aromatic compound in the presence of Lewis acid catalyst (${\mathbf{AlCl}}_3$).The products obtained are an acyl group added to the aromatic compound and a by-product.

Friedel Crafts Acylation obtains the given compound. The two pairs of reagents used for the formation of a given compound are,

1.When benzoyl chloride reacts with toluene in the presence of${\text{AlCl}}_{\text{3}}$ (Lewis acid catalyst), the given product is obtained.

Friedel Crafts Acylation

2. When 4-methyl benzoyl chloride reacts with benzene in the presence of${\text{AlCl}}_{\text{3}}$ (Lewis acid catalyst), the given product is obtained.

Friedel Crafts Acylation