The benzoxazole compound, name is 6-Bromobenzo[d]oxazol-2(3H)-one,cas is 19932-85-5, mainly used in chemical industry, its synthesis route is as follows.,19932-85-5
To a solution of XXXV-2b (500 mg, 2.97 mmol) in dry DCM (20 mL) was added TEA (360 mg, 3.56 mmol) and Trt-Cl (992 mg, 3.56 mmol). The mixture was stuffed overnight at rt, then poured into water, extracted with DCM (50 mLx3). The combined organic layer was washed with brine, dried over anhydrous Na2SO4, and concentrated in vacuo. The residue was purified by column chromatography on silica gel (PE/EA=10/1) to afford XXXV-3b (1.2 g, 89% yield).
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Reference£º
Patent; INTERMUNE, INC.; RAMPHAL, Johnnie, Y.; BUCKMAN, Brad, Owen; EMAYAN, Kumaraswamy; NICHOLAS, John, Beamond; SEIWERT, Scott, D.; WO2015/153683; (2015); A1;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem