402-07-3, The chemical industry reduces the impact on the environment during synthesis 402-07-3, name is 4-Bromo-3-methoxybenzotrifluoride, I believe this compound will play a more active role in future production and life.
A vial was charged with 6-bromo-N-(4-methoxybenzyl)-N-(thiazol-2-yl)- 3,4-dihydro-2H-benzo[b][l,4]oxazine-7-sulfonamide (107.43 mg, 0.216 mmol), l-bromo-2-methoxy-4-(trifluoromethyl)benzene (Sigma-Aldrich, St. Loius, MO, 193 mg, 0.757 mmol), Xantphos (25.04 mg, 0.043 mmol), Pd2(dba)3 (19.82 mg, 0.022 mmol), and cesium carbonate (212 mg, 0.649 mmol). The vessel was flushed with Ar (g), then 1,4-dioxane (2164 mu) was added. The vessel was sealed and placed in a 100 C heating bath for 20 h. The mixture was cooled to room temperature, diluted with EtOAc, and filtered through celite. The filtrate was concentrated, and the residue was purified by chromatgraphy on silica gel (12-g Redi-Sep Gold column, 0-50% EtO Ac/Heptane) to give 6-bromo-4-(2-methoxy-4- (trifluoromethyl)phenyl)-N-(4-methoxybenzyl)-N-(thiazol-2-yl)-3,4-dihydro-2H- benzo[b][l,4]oxazine-7-sulfonamide (67 mg, 0.100 mmol, 46.2 % yield) as a yellow foam: m/z (ESI) 670.2 (M+H)+
The chemical industry reduces the impact on the environment during synthesis 4-Bromo-3-methoxybenzotrifluoride. I believe this compound will play a more active role in future production and life.
Reference:
Patent; AMGEN INC.; BOEZIO, Christiane; BOEZIO, Alessandro; BREGMAN, Howard; CHAKKA, Nagasree; COATS, James R.; COPELAND, Katrina W.; DIMAURO, Erin F.; DINEEN, Thomas; GAO, Hua; LA, Daniel; MARX, Isaac E.; NGUYEN, Hanh Nho; PETERSON, Emily Anne; WEISS, Matthew; WO2013/122897; (2013); A1;,
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