It is a common heterocyclic compound, the benzoxazole compound, 2-Benzoxazolinone, cas is 59-49-4 its synthesis route is as follows.
3H-1,3-Benzoxazol-2-one (5.00?g, 37.00?mmol) was dissolved in acetic acid (50?mL) and bromine (1.9?mL, 37.0?mmol) was added dropwise. The reaction mixture was stirred at 20?C for 4?h.The reaction mixture was poured onto ice and the precipitate was collected by filtration, washed with water and air-dried to give a pink powder (7.48?g, 34.8?mmol, 94%). Mp 191.6-192.3?C. 1H NMR (300?MHz, DMSOd6): delta 11.81 (s, 1H), 7.57 (dd, J?=?1.9?Hz, J?=?0.3?Hz, 1H), 7.30 (dd, J?=?8.3?Hz, J?=?1.9?Hz, 1H), 7.04 (dd, J?=?8.3?Hz, J?=?0.3?Hz, 1H). 13C NMR (75?MHz, DMSOd6): delta 154.5, 144.5, 130.3, 126.9, 113.5, 113.2, 111.7. LCMS m/z calc for [M?-?H]+: 211.9, 213.9, found: 211.8, 213.8.
59-49-4, In the field of chemistry, the synthetic routes of compounds are constantly being developed and updated. I will also mention this compound in other articles.,59-49-4 ,2-Benzoxazolinone, other downstream synthetic routes, hurry up and to see
Reference：
Article; Gay, Marion; Evrard, Caroline; Descamps, Florian; Carato, Pascal; Renault, Nicolas; Coevoet, Mathilde; Eddarkaoui, Sabiha; Baud, Catherine; Larchanche, Paul-Emmanuel; Buee, Luc; El Bakali, Jamal; Vingtdeux, Valerie; Sergeant, Nicolas; Melnyk, Patricia; European Journal of Medicinal Chemistry; vol. 159; (2018); p. 104 – 125;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem