反应详情

温度

100 °C

A mixture of 2-(4-(4-acetyl-1,4-diazepan-1-yl)phenyl)-5,7-dimethoxyquinazolin-4(3H)-one (0.135 g, 0.32 mmol) and 2 N HCl (10 mL) was heated at 100° C. for 4 hours. Then, the reaction mixture was cooled to room temperature, basified to pH 8, and extracted with CH2Cl2 (8×125 mL). The residue was purified by flash chromatography on silica gel, eluting with 1:1 CH2Cl2/92:7:1 CHCl3/MeOH/concentrated NH4OH to 100% 92:7:1 CHCl3/MeOH/concentrated NH4OH, to afford the title compound (0.040 g, 33%) as a yellow solid. 1H NMR (300 MHz, CDCl3): δ 8.98 (s, 1H), 7.86 (d, J=9.0 Hz, 2H), 6.76-6.79 (m, 3H), 6.40 (d, J=2.3 Hz, 1H), 3.98 (s, 3H), 3.92 (s, 3H), 3.61-3.69 (m, 5H), 3.05 (t, J=4.9 Hz, 2H), 2.83 (t, J=5.7 Hz, 2H), 1.92 (t, J=5.4 Hz, 2H). ESI MS m/z 379 [M−H]−.

1. temperatureThen, the reaction mixture was cooled to room temperature
2. extractionextracted with CH2Cl2 (8×125 mL)
3. customThe residue was purified by flash chromatography on silica gel
4. washeluting with 1:1 CH2Cl2/92:7:1 CHCl3/MeOH/concentrated NH4OH to 100% 92:7:1 CHCl3/MeOH/concentrated NH4OH