反应详情

Aqueous sodium carbonate solution (2 M, 1.55 ml) was added to a solution of (2R)-1-(4-bromophenoxy)-4-(3-pyridyl)-2-butanol (0.50 g), 3-aminobenzeneboronic acid monohydrate (0.26 g) and tetrakis(triphenylphosphine)palladium(0) (0.045 g) in ethanol (1.72 ml) and toluene (6.9 ml). The mixture was stirred at reflux under a nitrogen atmosphere for 3 hours and then, cooled to room temperature. The reaction mixture was poured into water and then extracted with ethyl acetate. The combined organic extracts were dried over anhydrous magnesium sulfate, filtered and concentrated under reduced pressure. The residue was purified by column chromatography over silica eluting with dichloromethane:methanol (19:1) to give the title compound (0.43 g) as an which was recrystallised from isohexane:ethyl acetate to give a white solid.

1. temperatureat reflux under a nitrogen atmosphere for 3 hours
2. extractionextracted with ethyl acetate
3. dry with materialThe combined organic extracts were dried over anhydrous magnesium sulfate
4. filtrationfiltered
5. concentrationconcentrated under reduced pressure
6. customThe residue was purified by column chromatography over silica eluting with dichloromethane:methanol (19:1)