反应详情

温度

0 °C

To a solution of (2-hydroxy-ethyl)-(1H-indol-7-ylmethyl)-carbamic acid benzyl ester (2.79 g, 8.61 mmol) in dichloromethane (50 mL) was added triethylamine (1.56 mL, 11.2 mmol). The mixture was cooled to 0° C. and methanesulfonyl chloride (0.74 mL, 9.47 mmol) added in a dropwise manner. The mixture was warmed to room temperature and allowed to stir for 2 hours. The mixture was then quenched with water (30 mL) and 1.0 M sodium hydroxide (10 mL). The organic layer was separated and the aqueous layer extracted with dichloromethane (20 mL). The combined extracts were washed with 1.0 M hydrochloric acid (20 mL), water (30 mL), dried over anhydrous sodium sulfate and evaporated to dryness. Methanesulfonic acid 2-[benzyloxycarbonyl-(1H-indol-7-ylmethyl)-amino]-ethyl ester (3.46 g) was obtained as an oil

1. temperatureThe mixture was warmed to room temperature
2. customThe mixture was then quenched with water (30 mL) and 1.0 M sodium hydroxide (10 mL)
3. customThe organic layer was separated
4. extractionthe aqueous layer extracted with dichloromethane (20 mL)
5. washThe combined extracts were washed with 1.0 M hydrochloric acid (20 mL), water (30 mL)
6. dry with materialdried over anhydrous sodium sulfate
7. customevaporated to dryness