反应详情

6-Bromo-2-(2-methoxyphenyl)quinazolin-4(3H)-one (674 mg, 2.0 mmol), POCl3 (624 mg, 4 mmol), and N,N-dimethylaniline (740 mg, 6.1 mmol) were dissolved in benzene (12 mL) and refluxed for 3 h. The reaction mixture was diluted with EtOAc, and the organic phase was washed with aqueous saturated NaHCO3 (1×) and H2O (2×), dried over Na2SO4, and concentrated. Purification via silica gel chromatography using 0-5% EtOAc in CH2Cl2/hexanes (1:1) gave 6-bromo-4-chloro-2-(2-methoxyphenyl)quinazoline. LC/MS: m/z 348.9 (M+H)+ at 3.66 min (10%-99% CH13CN (0.035% TFA)/H2O (0.05% TFA)).

1. temperaturerefluxed for 3 h
2. washthe organic phase was washed with aqueous saturated NaHCO3 (1×) and H2O (2×)
3. dry with materialdried over Na2SO4
4. concentrationconcentrated
5. customPurification via silica gel chromatography