Effective synthesis of 4,5-dibromobenzo[1,2-<i>c</i>:3,4-<i>c</i>']bis([1,2,5]thiadiazole) by bromination of benzo[1,2-<i>c</i>:3,4-<i>c</i>']bis([1,2,5]thiadiazole)

Abstract

The bromination of benzo[1,2-c:3,4-c']bis([1,2,5]thiadiazole) was studied. An efficient method has been developed for the synthesis of 4,5-dibromobenzo[1,2-c:3,4-c']bis([1,2,5]thiadiazole), an important intermediate for the preparation of highly efficient photochromic diarylethenes for photosensitive and mechanoreactive materials that can be useful in a number of applications, including stress perception and information storage.