反应详情

To a solution of 4-(4-aminocyclohexyloxy)benzoic acid ethyl ester (4.15 g, 15.76 mmol) in DCM (40 mL) at 0° C. was added TEA (1.6 g, 15.7 mmol) followed by cyclopropane carbonyl chloride (1.98 g, 18.9 mmol) over a period of 1 hr. Stirring was continued at 0-5° C. for 2 h. Water (40 mL) was then added and extracted with EtOAc. The organic layer was washed with 2N HCl, satd.NaHCO3 and brine solution. It was dried and concentrated under vacuum affording 4.75 g (91%) of 4-[4-(cyclopropanecarbonyl-amino)-cyclohexyloxy]-benzoic acid ethyl ester as an oil.

1. extractionextracted with EtOAc
2. washThe organic layer was washed with 2N HCl
3. customIt was dried
4. concentrationconcentrated under vacuum