反应详情

7-amino-3-chloro-5H-benzo[4,5]cyclohepta[1,2-b]pyridin-5-one (0.70 g, 2.7 mmol) was dissolved in 20 mL of dry dichloromethane and 5 mL of dry acetonitrile. Methoxyacetic acid (0.32 mL, 4.1 mmol), N-(3-Dimethylaminopropyl)-N′-ethylcarbodiimide hydrochloride (EDCI) (0.79 g, 4.1 mmol) and 1-hydroxybenzotriazole hydrate (HOBt) (0.55 g, 4.1 mmol) were added and the solution was stirred at ambient temperature. After 12 hours, the reaction solution was poured into 300 mL of ethyl acetate and 100 mL of water. The organic layer was separated and washed with 100 mL of brine. The organic layer was separated, dried with magnesium sulfate, filtered, concentrated and purified by flash column chromatography (0-100% ethyl acetate/hexanes gradient) to afford the title compound. 1H NMR (600 MHz, CDCl3) δ 10.29 (s, 1H); 8.94 (d, 1H); 8.58 (d, 1H); 8.46 (d, 1H); 8.10 (dd, 1H); 7.77 (d, 1H); 7.40 (d, 1H); 7.20 (d, 1H); 4.04 (s, 2H); 3.36 (s, 3H). LRMS (APCI) calculated for C17H14C1N2O3 [M+H]+, 329.1; found 329.1.

1. customThe organic layer was separated
2. washwashed with 100 mL of brine
3. customThe organic layer was separated
4. dry with materialdried with magnesium sulfate
5. filtrationfiltered
6. concentrationconcentrated
7. custompurified by flash column chromatography (0-100% ethyl acetate/hexanes gradient)