How is 3,3-Bis(bromomethyl)oxetane (CAS: 2402-83-7) typically synthesized?

3,3-Bis(bromomethyl)oxetane (CAS: 2402-83-7) is typically synthesized by the bromination of oxetane using bromine in the presence of a catalyst such as iron(III) bromide. The reaction involves the substitution of hydrogen atoms with bromine, leading to a high yield of the desired product. The reaction is carried out under anhydrous conditions to prevent side reactions.