反应详情

温度

0 °C

A solution of cis-3-(1H-pyrazol-1-yl)cyclopentanol (5.01 g, 32.9 mmol) in THF (150 mL) was cooled to 0° C. and treated with phthalimide (5.33 g, 36.2 mmol), diisopropylazodicarboxylate (7.1 mL, 36.1 mmol) and triphenylphosphine (9.48 g, 36.1 mmol). The reaction mixture was stirred at 0° C. for 4 h. The reaction mixture was poured water and then extracted with EtOAc. The organic layer was dried over anhyd Na2SO4 followed by the removal of solvent. The crude product was purified by column chromatography (Chromatrex, Hexane/EtOAc=5/1) to yield trans-N-[3-(1H-pyrazol-1-yl)cyclopentyl]phthalimide (4.85 g, 52%) as a colorless powder.

1. extractionextracted with EtOAc
2. dry with materialThe organic layer was dried over anhyd Na2SO4
3. customfollowed by the removal of solvent
4. customThe crude product was purified by column chromatography (Chromatrex, Hexane/EtOAc=5/1)