反应详情

8-Ethyl-2-[4-(4-methyl-piperazin-1-yl)-phenylamino]-7-oxo-7,8-dihydro-pyrido[2,3-d]pyrimidine-6-boronic acid (5, 100 mg, 0.24 mmol), 1-bromo-2-chloro-4-methylsulfonylbenzene (9, 75 mg, 0.28 mmol), sodium carbonate (80 mg, 0.75 mmol) and Pd(PPh3)4 (30 mg, 0.026 mmol) were mixed under argon in a degassed mixture of dimethoxyethane:water (10:1, 2.5 mL). The resulting suspension was irradiated for 30 min at 120° C. in a microwave reactor. After completion, the reaction mixture was evaporated and the residue was purified by column chromatography using dichloromethane:methanol (100:3) as eluent, The crude product was triturated with isopropyl ether (10 mL) and collected. The title compound (49 mg, 0.088 mmol, 37%) was obtained as a yellow solid. ESMS m/z 553 (M+H)+; 1H NMR (400 MHz, CDCl3) δ ppm 8.04 (d, J=2.0 Hz, 1H) 7.86 (d, J=8.3 Hz, 1H) 7.69 (dd, J=8.3, 2.0 Hz, 1H) 3.08 (s, 3H).

1. customThe resulting suspension was irradiated for 30 min at 120° C. in a microwave reactor
2. customAfter completion, the reaction mixture was evaporated
3. customthe residue was purified by column chromatography
4. customThe crude product was triturated with isopropyl ether (10 mL)
5. customcollected