反应详情

This reaction was run in the same manner as ethyl 1-(3-thiophenecarbonyl)-3-piperidinecarboxylate, starting with commercially available 2-phenylpropionic acid (265 μl; 1.94 mmol), 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride (371.3 mg; 1.94 mmol) and (S)-ethyl nipecotate (300 μl; 1.94 mmol). Crude product was purified by chromatography on silica eluting with 25% ethyl acetate/75% hexane, giving (S)±ethyl 1-(2-phenylpropionyl)-3-piperidinecarboxylate (268.9 mg) as a colorless oil. MS m/z (positive ion) 290 (MH+; 100), 142 (55), 115 (50).

1. customCrude product was purified by chromatography on silica eluting with 25% ethyl acetate/75% hexane