反应详情

To 2.21 g (6.01 mmol) of the above prepared [4-tert-butoxycarbonylamino-2-(3-methoxy-propyl)-phenoxy]-acetic acid ethyl ester, dissolved in 18 ml of abs. DMF, was added at 0° C. 0.313 g of NaH (60% in mineral oil, 1.3 eq.). 5 Min. later, 0.75 ml (2 eq.) of MeI was added and the reaction allowed to proceed for 10 Min. at 0° C. and for 1 h at ambient temperature. Pouring onto crashed ice/KHSO4 solution, twofold extraction with AcOEt, washing with water and brine, drying over magnesium sulfate, and evaporation of the solvents, followed by flash chromatography (SiO2, hexane/AcOEt=8/2), yielded 1.55 g of the title compound as light yellow oil.

1. dissolutiondissolved in 18 ml of abs
2. additionPouring
3. extractionextraction with AcOEt
4. washwashing with water and brine
5. dry with materialdrying over magnesium sulfate, and evaporation of the solvents