反应详情

温度

25 °C

2-(3,4-Dichloro-phenyl)-3-(3-methoxy-cyclopentyl)-propionic acid methyl ester (118.3 mg, 0.36 mmol) and 2-aminothiazole (35.8 mg, 0.36 mmol) were treated with a solution of magnesium methoxide in methanol (7.4 wt. %, 2.6 mL, 1.79 mmol). The resulting reaction mixture was then heated under reflux for 30 h. The reaction mixture was allowed to cool to 25° C. and then filtered through celite. The celite was thoroughly washed with ethyl acetate, and the filtrate was concentrated in vacuo. Flash chromatography (Merck Silica gel 60, 230–400 mesh, 40% ethyl acetate/hexanes) afforded the 2-(3,4-dichloro-phenyl)-3-(3-methoxy-cyclopentyl)-N-thiazol-2-yl-propionamide (9.6 mg, 7%) as a white glass: (ES)+-HRMS m/e calcd for C18H20Cl2N2O2S (M+H)+ 399.0696, found 399.0700.

1. customThe resulting reaction mixture
2. temperaturewas then heated
3. temperatureunder reflux for 30 h
4. filtrationfiltered through celite
5. washThe celite was thoroughly washed with ethyl acetate
6. concentrationthe filtrate was concentrated in vacuo