反应详情

To a suspension of 7-methoxy-6-(2-methoxyethoxy)-2-(3-nitrophenyl)quinazolin-4(3H)-one (1.65 g, 4.46 mmol) in anhydrous THF (30 mL) was added oxalyl chloride (1.3 mL, 14.7 mmol) and 2 drops of DMF. The mixture was refluxed for 2 h, upon which the mixture was concentrated in vacuo, taken up in CHCl3 (100 mL) and washed with sat. NaHCO3 (3×50 mL), water (2×50 mL) and brine (1×50 mL). The organic layer was dried (Na2SO4), filtered and concentrated in vacuo to give 4-chloro-7-methoxy-6-(2-methoxyethoxy)-2-(3-nitrophenyl)quinazoline (1.18 g, 3.03 mmol, 68%). HPLC retention time 9.55 mins.

1. temperatureThe mixture was refluxed for 2 h, upon which the mixture
2. concentrationwas concentrated in vacuo
3. washwashed with sat. NaHCO3 (3×50 mL), water (2×50 mL) and brine (1×50 mL)
4. dry with materialThe organic layer was dried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated in vacuo