The system starts With all the development of a little amount of bromine radical which then abstracts an allylic hydrogen to kind an allylic radical and HBr. This reaction ends in the development of two new C-halogen bonds and breaks the C-C pi bond as well as a halogen-halogen bond. https://solutionbromuredepotassiu59370.articlesblogger.com/59948613/indicators-on-bromazolam-what-is-it-you-should-know