反应详情

(4′-Bromobiphenyl-4-yl)acetic acid (1.0 g, 3.4 mmol) was dissolved in a mixed solvent of tetrahydrofuran (20 mL) and methanol (20 mL), and dimethylamine hydrochloride (0.42 g, 5.2 mmol), 4-(4,6-dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium chloride (1.3 g, 4.7 mmol) and N-methylmorpholine (0.95 mL, 8.6 mmol) were added, followed by stirring at room temperature for 18 hours. After the reaction solution was concentrated under reduced pressure, the resulting residue was purified by chromatography on a silica gel column (Moritex Corporation, elution solvent: dichloromethane/ethyl acetate), and a fraction corresponding to the Rf value=0.55 (dichloromethane/ethyl acetate=1/1) by thin layer chromatography was concentrated under reduced pressure to afford the title compound (0.82 g, 2.6 mmol) as a white solid (yield 75%).

1. additionwere added
2. concentrationAfter the reaction solution was concentrated under reduced pressure
3. customthe resulting residue was purified by chromatography on a silica gel column (Moritex Corporation, elution solvent: dichloromethane/ethyl acetate)
4. concentrationa fraction corresponding to the Rf value=0.55 (dichloromethane/ethyl acetate=1/1) by thin layer chromatography was concentrated under reduced pressure