With the rapid development and complex challenges of chemical substances, new drug synthesis pathways are usually the most effective.375369-14-5,6-Bromobenzo[d]oxazole,as a common compound, the synthetic route is as follows.
Example 326; N-(5-(benzo[d]oxazol-6-yl)-2-chloropyridin-3-yl)-4-fluorobenzenesulfonamide; To a microwave vial equipped with a stirbar and charged with 6-bromobenzo[d]oxazole (0.050 g, 0.25 mmol), cesium carbonate (0.25 g, 0.76 mmol), PdCl2(dppf)*DCM (0.037 g, 0.045 mmol), N-(2-chloro-5- (4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)pyridin-3-yl)-4-fluorobenzenesulfonamide (0.10 g, 0.25 mmol) in THF (3 ml) was added water (0.5 ml). The vial was capped and placed into CEM Microwave for 10 minutes at 100 C, while 100 watts of energy was supplied via Powermax (Simultaneous heating while cooling technology). The progress of the reaction was monitored by LC/MS, which showed desired material in the mixture. The mixture was diluted with water and the organic layer was extracted with DCM and brine solution. The organics were collected, dried over sodium sulfate, filtered and concentrated in vacuo. The crude was recrystallized from 5:1 DCM/MeOH and Hexanes to give N-(5- (benzo[d]oxazol-6-yl)-2-chloropyridin-3-yl)-4-fluorobenzenesulfonamide (0.040 g, 39% yield) as a tan crystalline solid. MS (ESI pos. ion) m/z: 404 (MH+).
375369-14-5 6-Bromobenzo[d]oxazole 17902800, abenzoxazole compound, is more and more widely used in various.
Reference£º
Patent; AMGEN INC.; WO2009/17822; (2009); A2;,
Benzoxazole – Wikipedia
Benzoxazole | C7H5NO – PubChem