Bromination of 2,1,3-Benzothiadiazole with N-Bromosuccinimide

Abstract

  2,1,3-benzothiadiazole is widely used in conducting polymer research. 4,7-Dibromo-2,1,3-
benzothiadiazole or 4-bromo-2,1,3-benzothiadiazole can be used for valuable blocks in the main-chain to
improve electronic property of resultant polymers. However, the bromination of 2,1,3-benzothiadiazole need
Br2. Br2 is difficult to handle because high reactivity and toxicity in practical synthesis. We propose simple and
convenience method using N-bromosuccinimide for bromination of benzothiadiazole.