2-Bromo-2-methylpropanoic acid

In the synthetic route, it acts as an alkylating agent, introducing the 2-methylpropionyl fragment onto the nitrogen of the intermediate thiohydantoin or related amine structure. This step is crucial for forming the correct N-substituted scaffold that contributes to the biological activity of Enzalutamide. After this alkylation, further transformations such as cyclization, coupling, or purification steps lead to the formation of the final Active Pharmaceutical Ingredient. 2-Bromo-2-methylpropanoic acid is an important intermediate in the synthesis of Enzalutamide.