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产品推荐:3-溴-6,7-二甲氧基喹啉(850352-73-7)

别名:3-溴-6,7-二甲氧基喹啉
英文名称:3-Bromo-6,7-dimethoxyquinoline
分子式:C11H10BrNO2
Cas No.:850352-73-7 
分子量:268.1066
结构式:image.png

规格:95%

外观:白色固体

用途:基础原料、有机中间体、医药中间体

合成工艺如下:

sodium hydroxide; water; hydrogen bromide; ethyl acetate; copper(I) bromide

Reactants are commercially availlable.
Wyeth, US2003/32645, A1, (2003) Step 5 8-Bromo-6-methoxyquinoline To 5.05 g (29.0 mmol) 6-methoxy-quinolin-8-yl-amine in 25 mL of 48 percent HBr at 0°C. is added a solution of 2.60 g (37.7 mmol) and 20 mL H2O. After stirring at 0°C . for 15 min, the resulting mixture is added dropwise to a 75°C. solution of 5.0 g (34.8 mmol) CuBr and 60 mL of 48percent HBr. After 5.5 h, the reaction mixture is neutralized with 150 mL of ice col d 5N NaOH, the resulting mixture is stirred with 300 mL EtOAc and filtered through a pad of celite. This mixture is extracted 2*100 mL EtOAc, and the combined organics are washed with 1*200 mL H2O, 1* 200 mL brine, dried over Na2SO4, filtered, and the volatiles are evaporated. Flash chromatography on SiO2 gel, eluding with hexanes/EtOAc (4/1 to 1/1), gives 4.23 g (17.8 mmol, a 61percent yield) of t he title compound as a brown oil. MS (ES) m/z 239 (MH)+.


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