反应详情

A solution of rac-2-cyclohexyloxy-2-(3,4-dichloro-phenyl)-acetamide (291 mg, 0.96 mmol) in toluene (10 mL) was treated with methyl isocyanate (0.09 mL, 1.44 mmol). The resulting solution was heated at reflux for 24 h and then the cooled reaction was concentrated in vacuo. The reaction product was purified by flash chromatography (Merck Silica gel 60, 230-400 mesh, 90/10 hexanes/ethyl acetate) to give 1-[cyclohexyloxy-(3,4-dichloro-phenyl)-acetyl]-3-methyl-urea (301 mg, 87% yield) as a colorless oil: EI-HRMS m/e calcd for C16H20N2Cl2O3 (M+H)+ 359.0929, found 359.0922.

1. temperatureThe resulting solution was heated
2. temperatureat reflux for 24 h
3. customthe cooled reaction
4. concentrationwas concentrated in vacuo
5. customThe reaction product was purified by flash chromatography (Merck Silica gel 60, 230-400 mesh, 90/10 hexanes/ethyl acetate)