反应详情

In a 50 mL round-bottomed flask was added 2,4-dichloro-6-iodoquinazoline (0.52 g, 1.6 mmol), 3-chloro-4-fluoroaniline (0.30 g, 2.1 mmol), and sodium acetate (0.20 g, 2.4 mmol) in THF (6 mL) and water (2 mL) to give a brown suspension. After being stirred at room temperature for 6 days, the reaction mixture was diluted with water (15 mL) and extracted with ethyl acetate (2×10 mL). The organic layers were combined and washed with brine (1×20 mL), dried over Na2SO4, filtered and concentrated. The resulting product, was washed with CH2Cl2 and dried to give 0.51 g of 2-chloro-N-(3-chloro-4-fluorophenyl)-6-iodoquinazolin-4-amine as a tight brown solid in a 73% yield, 1H NMR (300 MHz, DMSO) δ 10.29 (s, 1H), 8.95 (s, 1H), 8.14 (dd, J=1.5, 9.0 Hz, 1H), 8.06 (dd, J=2.7, 6.6 Hz, 1H), 7.81-7.76 (m, 1H), 7.52-7.46 (m, 2H).

1. customto give a brown suspension
2. extractionextracted with ethyl acetate (2×10 mL)
3. washwashed with brine (1×20 mL)
4. dry with materialdried over Na2SO4
5. filtrationfiltered
6. concentrationconcentrated
7. washThe resulting product, was washed with CH2Cl2
8. customdried