反应详情

温度

120 °C

A microwave vial was charged with 7-bromo-N-(3-chloro-4-fluorophenyl)-2-(pyridin-3-yl)quinazolin-4-amine (synthesized as described in Scheme 1 and 4, substituting 4-bromo-2-nitrobenzoic acid for 2-nitro-5-propoxy-benzoic acid and 3-chloro-4-fluoroaniline for 2-aminobenzamide) (100 mg, 0.233 mmol), 6-methoxypyridin-3-ylboronic acid (44.5 mg, 0.291 mmol, 1.25 equiv), Pd(PPh3)2Cl2 (8.1 mg, 5 mol %) and potassium carbonate (160.1 mg, 1.16 mmol, 5.0 equiv). The mixture was suspended in DME/water/ethanol (7:3:2, 4 mL), and the reaction was heated under microwave irradiation conditions at 120° C. for 10 minutes. The crude reaction mixture was diluted with water (10 mL) and then filtered. The solid residue was dissolved in methanol/THF (1:1, 5 mL) with heating and then filtered through Celite to remove the catalyst. The resulting filtrate was concentrated to afford the desired product as a tan solid (7.0 mg, 6.5%). LCMS m/z=458.1 (M+1) (Method C) (retention time=2.51 min). 1H NMR (300 MHz, DMSO) δ 10.12 (s, 1H), 9.55 (s, 1H), 8.76 (d, J=2.5 Hz, 1H), 8.72-8.65 (m, 2H), 8.62 (d, J=8.6 Hz, 1H), 8.34-8.26 (m, 2H), 8.15 (d, J=1.6 Hz, 1H), 8.02 (d, J=8.7 Hz, 1H), 7.97-7.88 (m, 1H), 7.61-7.49 (m, 2H), 6.99 (d, J=8.7 Hz, 1H), 3.94 (s, 3H).

1. customThe crude reaction mixture
2. filtrationfiltered
3. dissolutionThe solid residue was dissolved in methanol/THF (1:1, 5 mL)
4. temperaturewith heating
5. filtrationfiltered through Celite
6. customto remove the catalyst
7. concentrationThe resulting filtrate was concentrated