MHT CET202615 April 2026Evening ShiftChemistryHydrocarbonsActual
What are the reactants involved in Friedal Crafts alkylation?
Options
- AC ₆ H ₆ + NH ₃
- BC ₆ H ₆ + CH ₃ Cl
- CC ₆ H ₆ + CH ₃ COCl
- DC ₆ H ₆ + CH ₄
Correct answer
B. C ₆ H ₆ + CH ₃ Cl
Step-by-step solution
Friedel-Crafts alkylation is an electrophilic aromatic substitution reaction in which an alkyl group is introduced into an aromatic ring. The typical reactants are an aromatic compound, such as benzene ( C ₆ H ₆ ), and an alkyl halide, such as methyl chloride ( CH ₃ Cl ). The reaction is carried out in the presence of a Lewis acid catalyst like anhydrous AlCl ₃ . C ₆ H ₆ + CH ₃ Cl Anhydrous AlCl ₃ C ₆ H ₅ CH ₃ + HCl The reaction of benzene with acetyl chloride ( CH ₃ COCl ) corresponds to Friedel-Crafts acylation.