反应详情

温度

0 °C

Phosphoryl chloride (50 mL, 0.547 mol) was cooled to 0° C. and (6-bromo-4-hydroxyquinolin-3-yl)(cyclopropyl)methanone (21 g, 67.7 mmol) was added. The reaction mixture was stirred at 0° C. for 2 h, at room temperature for 2 h and concentrated. The residue was dissolved in methylene chloride and poured into cold 30% aq. ammonium hydroxide. The aqueous layer was separated and extracted with methylene chloride. The combined organics were dried over anhydrous sodium sulfate, filtered, and concentrated. The residue was purified by a silica plug to afford the desired product (5.8 g, 22%) as a brown solid: 1H NMR (300 MHz, CDCl3) δ 8.91 (s, J=6.4 Hz, 1H), 8.55-8.49 (m, 1H), 8.07-7.97 (m, 1H), 7.91 (dd, J=8.9, 2.1 Hz, 1H), 2.69-2.54 (m, 1H), 1.50-1.40 (m, 2H), 1.28-1.19 (m, 2H).

1. concentrationconcentrated
2. dissolutionThe residue was dissolved in methylene chloride
3. additionpoured into cold 30% aq. ammonium hydroxide
4. customThe aqueous layer was separated
5. extractionextracted with methylene chloride
6. dry with materialThe combined organics were dried over anhydrous sodium sulfate
7. filtrationfiltered
8. concentrationconcentrated
9. customThe residue was purified by a silica plug