反应详情

温度

-15 °C

To a solution of 80 mg of methyl 3-([2-(2,6-bis-hydroxymethyl-pyridin-4-yloxy)-ethyl]-{2-[2-(2-methoxy-ethoxy)-ethoxy]-ethyl}-amino)-propanoate in 8 ml of DCM, precooled to −25° C., was added 183 μl of diisopropylethylamine and 57 μl of methanesulfonyl chloride. The mixture was stirred for 1 hour at −15° C. and then washed with 5 ml of water. The aqueous phase was extracted with 5 ml of DCM. The organic phases were combined, dried over MgSO4 and concentrated under reduced pressure. 110 mg of methyl 3-([2-(2,6-bis-methanesulfonyloxymethyl-pyridin-4-yloxy)-ethyl]-{2-[2-(2-methoxy-ethoxy)-ethoxy]-ethyl}-amino)-propanoate were obtained. LC/MS (B): tr=2.67 min; [M+H]+: m/z 587

1. customprecooled to −25° C.
2. washwashed with 5 ml of water
3. extractionThe aqueous phase was extracted with 5 ml of DCM
4. dry with materialdried over MgSO4
5. concentrationconcentrated under reduced pressure