反应详情

温度

0 °C

2.16 ml of methanesulphonyl chloride followed by 3.86 ml of triethylamine are added to a solution of 5 g of (R)-3-hydroxymethylpiperidine-1-carboxylic acid tert-butyl ester in 80 ml of DCM cooled to 0° C. The medium is stirred at 0° C. for 1 h 30 min and 0.7 ml of triethylamine and 0.54 ml of methanesulphonyl chloride are again added. After 30 min at 0° C., the medium is hydrolysed, and the organic phase is washed twice in water and then with a saturated NaCl solution, and then dried over MgSO4. The medium is evaporated, to give 6.8 g of a pale yellow oil.

1. waitAfter 30 min at 0° C.
2. washthe organic phase is washed twice in water
3. dry with materialwith a saturated NaCl solution, and then dried over MgSO4
4. customThe medium is evaporated