反应详情

温度

50 °C

A solution of 4-chloro-7-nitroquinazoline hydrochloride (2.46 g, 10 mmol) and 2-fluoro-5-methoxycarbonyloxy-4-methylaniline (2.2 g, 1 mmol), (prepared as described for the starting material in Example 12), in isopropanol (25 ml) was heated at 50° C. for 1 hour. The mixture was allowed to cool, the precipitated solid was collected by filtration recrystallised from methylene chloride/methanol/isopropanol to give 4-(2-fluoro-5-methoxycarbonyloxy-4-methylanilino)-7-nitroquinazoline hydrochloride (1.8 g, 45%) as a yellow solid. 1H NMR Spectrum: (DMSOd6) 2.21(s, 3H); 3.86(s, 3H); 7.40(d, 1H); 7.46(d, 1H); 8.49(dd, 1H); 8.63(s, 1H); 8.84(s, 1H); 8.89(d, 1H) MS-ESI: 373 [MH]+

1. temperatureto cool
2. filtrationthe precipitated solid was collected by filtration
3. customrecrystallised from methylene chloride/methanol/isopropanol