How is Methyl 2-bromo-5-chlorobenzoate (CAS: 27007-53-0) typically synthesized?

Methyl 2-bromo-5-chlorobenzoate is typically synthesized from 2-chlorobenzoic acid and methyl bromide in the presence of a base such as potassium carbonate. The reaction involves the substitution of the hydroxyl group of the benzoic acid with a bromomethyl group, followed by the displacement of the chlorine atom by bromine. This process yields a high yield of the desired product with excellent selectivity.