反应详情

温度

0 °C

A solution of (1R)-1-{1-[3-(1-methylethyl)-1,2,4-oxadiazol-5-yl]-4-piperidinyl}ethanol (1.68 g, 7.0 mmol) in dichloromethane (100 mL) at 0° C. was treated with Et3N (1.98 mL, 14.0 mmol) followed by methanesulfonyl chloride (0.66 mL, 8.4 mmol). The mixture was stirred at 0° C. for 1 h, then at room temperature for 2 h. The mixture was diluted with dichloromethane (50 mL), washed with 1M NaH2PO4 (75 mL×2) and brine, and dried over Na2SO4 and concentrated to give (1R)-1-{1-[3-(1-methylethyl)-1,2,4-oxadiazol-5-yl]-4-piperidinyl}ethyl methanesulfonate (2.23 g, 7.0 mmol, 100% yield) as a brown oil, which was used without further purification.

1. waitat room temperature for 2 h
2. washwashed with 1M NaH2PO4 (75 mL×2) and brine
3. dry with materialdried over Na2SO4
4. concentrationconcentrated