反应详情

To a solution of 3-[4-({[4′-(2-ethoxyethoxy)-2′,6′-dimethylbiphenyl-3-yl]methyl}amino)-2-fluorophenyl]propanoic acid (0.186 g, 0.400 mmol) in tetrahydrofuran (5 mL) was added 1,1′-carbonyldiimidazole (97.3 mg, 0.600 mmol), and the mixture was heated under reflux under a nitrogen atmosphere for 1 hr. After cooling the reaction mixture, 1-phenylmethanesulfonamide (91.5 mg, 0.480 mmol) and 1,8-diazabicyclo[5.4.0]-7-undecene (0.0897 mL, 0.600 mmol) were added, and the mixture was stirred under a nitrogen atmosphere at room temperature for 24 hr. The reaction mixture was concentrated under reduced pressure, 10% aqueous citric acid solution was added to the residue, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, dried over anhydrous sodium sulfate, and concentrated under reduced pressure. The residue was purified by silica gel column chromatography (20%-60% ethyl acetate/hexane) to give the title compound (0.189 g, yield 76%) as a colorless oil.

1. temperaturethe mixture was heated
2. temperatureunder reflux under a nitrogen atmosphere for 1 hr
3. additionwere added
4. concentrationThe reaction mixture was concentrated under reduced pressure, 10% aqueous citric acid solution
5. additionwas added to the residue
6. extractionthe mixture was extracted with ethyl acetate
7. washThe extract was washed with saturated brine
8. dry with materialdried over anhydrous sodium sulfate
9. concentrationconcentrated under reduced pressure
10. customThe residue was purified by silica gel column chromatography (20%-60% ethyl acetate/hexane)