Application 2-Bromopropionyl chloride was used to synthesize cellulose macroinitiator for homogeneous atom transfer radical polymerization. It was used in the synthesis of 2-aminopropionyl polystyrene resin by Friedel Crafts reaction. 2-Bromopropionyl chloride is a reagent that is used in the preparation of pyrazinecarboxamide-based inhibitors of diacylglycerol acyltransferase. It is also used in the synthesis of 2-aminopropionyl polystyrene resin by Friedel Crafts reaction.