As a common heterocyclic compound, it belongs to benzoxazole compound, name is 6-Bromobenzo[d]oxazol-2(3H)-one, and cas is 19932-85-5, its synthesis route is as follows.
To a solution of 6-bromobenzo[i/]oxazol-2(3H)-one (0.651 g; 3.04mmol) in 1,4-dioxane (5 mL) was added ?raws-N-N-dimethylcyclohexan-l,2-diamine (0.05 mL; 0.32 mmol), Nal (0.934 g; 6.23 mmol) and then Cul (0.043 g; 0.22mmol). The reaction mixure was heated at 180C under microwave irradiation for 40 min. After cooling, the reaction mixure was diluted in water (15 mL) and EA (20 mL). The aq. layer was extracted three times with EA (3 x 15mL). The evaporation residue was purified by CC (Hept-EA) to afford the title compound (0.352 g; 44% yield) as a reddish solid. 1H NMR (d6-DMSO) delta 11.78 (s, 1H), 7.68 (d, J = 1.5 Hz, 1H), 7.48 (dd, J = 1.5, 8.1 Hz, 1H), 6.92 (d, J = 8.1 Hz, 1H).
19932-85-5, 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.,19932-85-5 ,6-Bromobenzo[d]oxazol-2(3H)-one, other downstream synthetic routes, hurry up and to see
Reference：
Patent; ACTELION PHARMACEUTICALS LTD; CHAPOUX, Gaelle; DIETHELM, Stefan; GAUVIN, Jean-Christophe; PANCHAUD, Philippe; SURIVET, Jean-Philippe; (90 pag.)WO2017/37039; (2017); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem