反应详情

To a cooled solution of tert-butyl ((trans)-2-(4-aminophenyl)cyclopropyl)carbamate (1 g, 4.03 mmol) in dichloromethane (5 mL) was added TEA (0.842 mL, 6.04 mmol), acetyl chloride (0.315 mL, 4.43 mmol) and stirred for 2 h at RT. The reaction mixture was diluted with ice cold water (50 mL) and extracted with DCM (2×50 mL). The combined organic layer was dried over anhydrous sodium sulphate and concentrated. The residue was purified using silica gel (100-200 mesh) column chromatography, compound eluted in 2% MeOH in DCM to afford tert-butyl ((trans)-2-(4-acetamidophenyl)cyclopropyl)carbamate (900 mg, 77% yield) as brown solid. LCMS (ES) m/e 289.26 (M−H).

1. extractionextracted with DCM (2×50 mL)
2. dry with materialThe combined organic layer was dried over anhydrous sodium sulphate
3. concentrationconcentrated
4. customThe residue was purified
5. washeluted in 2% MeOH in DCM