反应详情

1,1′-Carbonyldiimidazole (357 mg, 2.20 mmol) was added to a solution of 4-[(2S)-4-((1R)-1-phenylethyl)-morpholin-2-yl]-benzoic acid (623 mg, 2.00 mmol) in dichloromethane at 0° C. After stirring for 2 hours, morpholine (0.35 ml, 4.0 mmol) was added to the reaction mixture. After stirring over night, the resulting suspension was concentrated in vacuo. The residue was purified by silica gel column chromatography (hexane/ethyl acetate) to afford morpholin-4-yl-{4-[(2S)-4-((1R)-1-phenylethyl)-morpholin-2-yl]-phenyl}-methanone (465 mg, 60%.) as a colorless oil.

1. stirringAfter stirring over night
2. concentrationthe resulting suspension was concentrated in vacuo
3. customThe residue was purified by silica gel column chromatography (hexane/ethyl acetate)