反应详情

温度

135 °C

A suspension of 4-(4-(trifluoromethyl)phenyl)pyridin-2(1H)-one (121 mg, 0.504 mmol), tert-butyl 7-bromo-9-tosyl-3,4-dihydro-1H-pyrido[3,4-b]indole-2(9H)-carboxylate (305 mg, 0.605 mmol), CuI (115 mg, 0.605 mmol), 8-hydroxyquinoline (88 mg, 0.605 mmol) and Cs2CO3 (181 mg, 0.605 mmol) in DMSO (5 mL) was degassed under reduced pressure for 45 min. The suspension was put under Ar and heated at 135° C. with stirring for 2.5 h. The suspension was cooled, 4:1 CH2Cl2/(9:1 MeOH/NH4OH) (25 mL) was added and the resulting suspension was stirred at 25° C. for 10 min. The suspension was passed through a plug of silica gel and the filtrate was washed with brine. The solution was dried over Na2SO4 and concentrated under reduced pressure to afford an amorphous solid. Flash chromatography (silica gel, (1:1 EtOAc/hexanes)/(9:0.9:0.1 CH2Cl2/MeOH/NH4OH) 100:0 to 0:100) gave the title compound (170 mg, 51%) as a pink foam: 1H NMR (300 MHz, CDCl3) δ 8.26 (br s, 1H), 7.83-7.74 (m, 6H), 7.53 (d, J=7.2 Hz, 1H), 7.51-7.45 (m, 1H), 7.35-7.23 (m, 3H), 6.93 (d, J=1.8 Hz, 1H), 6.54 (dd, J=7.2, 1.8 Hz, 1H), 4.91 (br s, 2H), 3.75-3.65 (m, 2H), 2.73-2.68 (m, 2H), 2.36 (s, 3H), 1.52 (s, 9H).

1. customwas degassed under reduced pressure for 45 min
2. temperatureThe suspension was cooled
3. addition4:1 CH2Cl2/(9:1 MeOH/NH4OH) (25 mL) was added
4. stirringthe resulting suspension was stirred at 25° C. for 10 min
5. washthe filtrate was washed with brine
6. dry with materialThe solution was dried over Na2SO4
7. concentrationconcentrated under reduced pressure
8. customto afford an amorphous solid