反应详情

温度

90 °C

Add 2-chloro-6-propylsulfanyl-isonicotinic acid methyl ester (1.35 g, 5.49 mmol) palladium acetate (0.123 g, 0.549 mmol, 0.1 eq.), racemic 2,2′-bis(diphenylphosphino)-1,1′-binaphthyl (0.342 g, 0.549 mmol, 0.1 eq.), cesium carbonate (2.68 g, 8.24 mmol, 1.5 eq.) and toluene (20 mL) into a sealed vessel flushed with nitrogen. Slowly add (S)-sec-butylamine (0.824 mL, 8.24 mmol) and heat and stir the reaction mixture at 90° C. for 18 h. Cool the reaction mixture to room temperature, dilute with ether and filter through a filtering agent. Concentrate the filtrate and purify (silica gel chromatography, eluting with the 5:95 to 10:90 ethyl acetate:hexanes) to give the title compound (55%).

1. customflushed with nitrogen
2. temperatureCool the reaction mixture to room temperature
3. filtrationfilter through a filtering agent
4. concentrationConcentrate the filtrate
5. custompurify (silica gel chromatography
6. washeluting with the 5:95 to 10:90 ethyl acetate