In Friedal-craft's alkylation besides AlCl3 the other reactants are

Explanation

Friedel-Crafts alkylation is a reaction used to introduce an alkyl group (R-) to an aromatic ring (Ar-). The typical reactants are:Aromatic compound: This can be benzene (C6H6) or other substituted aromatic rings.Alkyl halide: This provides the alkyl group to be attached. Commonly used alkyl halides include primary or secondary alkyl chlorides or bromides.Lewis acid catalyst: This is commonly aluminum chloride (AlCl3), but other Lewis acids like FeCl3 can also be used. The catalyst activates the alkyl halide, making it a better electrophile for the reaction.In this case, C6H6 (benzene) is the aromatic compound, CH3Cl is the alkyl halide (providing the methyl group), and AlCl3 acts as the Lewis acid catalyst.