How is 2,4-Dibromo-1,3,5-benzenetriol (CAS: 84743-75-9) typically synthesized?

2,4-Dibromo-1,3,5-benzenetriol is often synthesized via a bromination reaction of 1,3,5-benzenetricarboxylic acid. The process typically involves the use of bromine in an aqueous medium, and a strong base such as sodium hydroxide, with the aim to selectively brominate the carboxylic acid groups. The reaction yields a mixture that can be purified by recrystallization.