反应详情

A mixture of rac-(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-4-(2,2-dimethyl-propyl)-pyrrolidine-3-carbonitrile (51.6 mg, 0.122 mmol) and [1-(imidazole-1-carbonyl)-piperidin-4-yl]-acetic acid ethyl ester (293.3 mg, 1.10 mmol) in CH2Cl2 (8 mL) was stirred at reflux for 16 hrs then 1 h at 140° C. in a microwave tube and finally at 160° C. for 1 hr. The reaction mixture was then purified by flash column to give rac-{1-[(2S,3S,4S)-2-(3-chloro-2-fluoro-phenyl)-3-(4-chloro-2-fluoro-phenyl)-3-cyano-4-(2,2-dimethyl-propyl)-pyrrolidine-1-carbonyl]-piperidin-4-yl}-acetic acid ethyl ester (40.4 mg, 53.4%). HRMS (ES+) m/z Calcd for C32H37Cl2F2N3O3+H [(M+H)+]: 620.2253; Found: 620.2254.

1. temperatureat reflux for 16 hrs
2. customThe reaction mixture was then purified by flash column