反应详情

Add Et3N (0.7 ml, 5.06 mmol) to a solution of ethyl 2-(2-Aminopyridin-6-yl)acetate (for preparation see Goto, Jiro; Sakane, Kazuo; Nakai, Yoshiharu; Teraji, Tsutomu; Kamiya, Takashi. J. Antibiot. (1984), 37(5), 532–45) (0.6 g, 3.33 mmol) and 3-(2-chloro-6-fluoro-phenyl)-5-methyl-isoxazole-4-carbonyl chloride (0.694 g, 2.53 mmol) in dichloromethane (7 ml) and stir overnight. Dilute the reaction with dichloromethane, wash (H2O then brine), dry (MgSO4), filter, and concentrate. Column chromatography (silica gel, hexanes/EtOAc gradient) gives the title compound (0.81 g, 77%). Mass Spectrum (FIA) (m/z) 418.2 [M+1]

1. additionDilute
2. washwash (H2O
3. dry with materialbrine), dry (MgSO4)
4. filtrationfilter
5. concentrationconcentrate