反应详情

To a solution of 1-chloroisoquinolin-4-ol (1.0 g, 5.5 mmole) in acetonitrile (10 mL) was added K2CO3 (2.3 g, 16.7 mmole) followed by ethyl iodide (0.87 mL, 11.0 mmole) at room temperature. The reaction mixture was stirred at room temperature for overnight. Solvent was evaporated under reduced pressure and the residue was diluted with water and extracted with ethyl acetate. The organic layer was dried over anhydrous Na2SO4, filtered, and concentrated under reduced. The resulting residue was purified by silica gel chromatography to afford 1-chloro-4-ethoxyisoquinoline (700 mg, 62%) as an off-white solid. 1H NMR (400 MHz, CD3OD): δ ppm 8.26-8.24 (m, 2H), 7.79 (s, 1H), 7.76-7.26 (m, 2H), 4.29-4.24 (q, J=6.8 Hz, 2H), 1.58-1.1.54 (t, J=6.8 Hz, 3H); MS: MS m/z 207.7 (M++1).

1. customSolvent was evaporated under reduced pressure
2. additionthe residue was diluted with water
3. extractionextracted with ethyl acetate
4. dry with materialThe organic layer was dried over anhydrous Na2SO4
5. filtrationfiltered
6. concentrationconcentrated
7. customThe resulting residue was purified by silica gel chromatography