It is a common heterocyclic compound, the benzoxazole compound, 5-Bromobenzo[d]oxazole, cas is 132244-31-6 its synthesis route is as follows.,132244-31-6
To a mixture of 5-bromobenzo[Patent; BRISTOL-MYERS SQUIBB COMPANY; DZIERBA, Carolyn Diane; BRONSON, Joanne J.; MACOR, John E.; DASGUPTA, Bireshwar; NARA, Susheel Jethanand; VRUDHULA, Vivekananda M.; PAN, Senliang; HARTZ, Richard A.; RAJAMANI, Ramkumar; (199 pag.)WO2016/22312; (2016); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem