反应详情

温度

85 °C

(This method is representative of method G1, G2, and G3. These three methods can be implemented in a similar way except for substitution of the appropriate solvent and temperature) A mixture of 4-chloro-6-propoxy-2-(pyridin-3-yl)quinazoline (90 mg, 0.3 mmol) and 2-aminobenzamide (52 mg, 0.4 mmol) in i-PrOH (5 mL) was stirred at 85° C. for 18 h. The yellow precipitate was collected and washed with i-PrOH (10 mL). The solid was suspended in water (10 mL) and NH3—H2O (1 mL) was added. After filtration the solid was dried in vacuo to afford 31.0 mg of vi-a as a white solid (30.8%). LCMS m/z=400.1 (M+1) (Method B) (retention time=1.96 min). 1H-NMR (400 MHz, DMSO-d6): δ 9.59 (d, J=2.0 Hz, 1H), 9.58 (d, J=7.6 Hz, 1H), 8.69-8.74 (m, 2H), 8.48 (s, 1H), 7.97 (d, J=6.8 Hz, 2H), 7.90 (d, J=8.8 Hz 1H), 7.74 (t, J=7.6 Hz, 1H), 7.56-7.61 (m, 3H), 7.20 (t, J=7.2 Hz, 1H), 4.16 (t, J=6.4 Hz, 2H), 1.86 (dd, J=14.0, 6.8 Hz, 2H), 1.07 (t, J=7.2 Hz, 3H).

1. customThe yellow precipitate was collected
2. washwashed with i-PrOH (10 mL)
3. additionNH3—H2O (1 mL) was added
4. filtrationAfter filtration the solid
5. customwas dried in vacuo