How is 4-(Bromomethyl)benzo[d][1,3]dioxole (CAS: 101417-40-7) typically synthesized?

4-(Bromomethyl)benzo[d][1,3]dioxole (CAS: 101417-40-7) is typically synthesized through a bromination reaction of 4-hydroxymethylbenzo[d][1,3]dioxole with hydrogen bromide in the presence of a Lewis acid catalyst, such as aluminum bromide (AlBr₃). The reaction is exothermic and requires careful control of temperature to achieve high yield and selectivity.