反应详情

温度

90 °C

4-[4-(4-Chloro-3-trifluoromethyl-benzyloxy)-phenyl]-piperidine-1-carboxylic acid tert-butyl ester (1 eq) is dissolved in 10% TFA/DCM and stirred for 30 minutes. After concentration, the residue is re-dissolved in DCM and washed with saturated NaHCO3 and brine. The organic layer is dried over Na2SO4 and concentrated. The residue is then dissolved in MeOH and t-butyl acrylate (2 eq) is added. The resulting solution is heated at 90° C. in microwave for 10 minutes. After concentration, purification by flash column chromatography (80% EtOAc/hexane) gave 3-{4-[4-(4-Chloro-3-trifluoromethyl-benzyloxy)-phenyl]-piperidin-1-yl}-propionic acid tert-butyl ester. [MS: (ES+) 498.2 (M+1)+].

1. concentrationAfter concentration
2. dissolutionthe residue is re-dissolved in DCM
3. washwashed with saturated NaHCO3 and brine
4. dry with materialThe organic layer is dried over Na2SO4
5. concentrationconcentrated
6. dissolutionThe residue is then dissolved in MeOH
7. concentrationAfter concentration, purification by flash column chromatography (80% EtOAc/hexane)