Br[C:2]1[N:7]=[CH:6][C:5]([C@@H:8]2[CH2:10][C@H:9]2[NH:11][C:12](=[O:18])[O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[CH:4][CH:3]=1.C(=O)([O-])[O-].[K+].[K+].[F:25][C:26]([F:37])([F:36])[C:27]1[CH:28]=[C:29](B(O)O)[CH:30]=[CH:31][CH:32]=1>CC#N.O>[F:25][C:26]([F:37])([F:36])[C:27]1[CH:32]=[C:31]([C:2]2[N:7]=[CH:6][C:5]([C@@H:8]3[CH2:10][C@H:9]3[NH:11][C:12](=[O:18])[O:13][C:14]([CH3:17])([CH3:16])[CH3:15])=[CH:4][CH:3]=2)[CH:30]=[CH:29][CH:28]=1A solution of tert-butyl (trans)-2-(6-bromopyridin-3-yl)cyclopropylcarbamate (Intermediate J[a2]) (100 mg, 0.32 mmol), potassium carbonate (132 mg, 0.96 mmol) and 3-trifluoromethylbenzeneboronic acid (72 mg, 0.38 mmol) in CH3CN:H2O (4:1) (10 mL) was degassed for 30 mins, added tetrakis triphenylphosphine palladium (37 mg, 0.032 mmol), degassed for 10 mins and heated the reaction mixture at reflux temperature for 2 h. After completion, the reaction mixture was poured in ice water (100 mL), extracted with ethyl acetate (5×40 mL). The combined extract were washed with water (70 mL), brine (70 mL), dried over anhydrous Na2SO4, filtered and evaporated. The crude residue was purified by column chromatography (SiO2), by using EtOAc:Petroleum ether (1:9) to get tert-butyl (trans)-2-(6-(3-(trifluoromethyl)phenyl)pyridin-3-yl)cyclopropylcarbamate (70 mg, 58.3%) as a white solid.
불러오는 중…
