How is 1,2-Ethanediyl bis(bromoacetate) (CAS: 3785-34-0) typically synthesized?

1,2-Ethanediyl bis(bromoacetate) (CAS: 3785-34-0) is typically synthesized through the reaction of ethylene glycol with bromoacetyl bromide in the presence of a base such as sodium hydroxide. The reaction proceeds under basic conditions to form the bis(bromoacetate) product. The process involves careful control of reaction temperature and pH to ensure high yield and selectivity. Commonly, the yield of the reaction is around 85-90%, with the product requiring purification by recrystallization.