反应详情

0.7 g (0.015 mol) sodiumhydride (55%) were added to a solution of 1.50 g (0.005 mol) 3-benzenesulfonylmethyl-5-furan-2-yl-1H-[1,2,4]triazole in 50 ml tetrahydrofuran. The mixture was refluxed and 0.85 g (0.005 mol) 3-(4-chlorophenyl)-2-propenenitrile in 30 ml tetrahydrofuran were added during, aperiod of 5.5 hours. Boiling was continued for 30 minutes and then 20 ml methanol were added at room temperature. Evaporation of the solvent and chromatography on silicagel with dichloromethane/methanol 99/1 gave 0.57 g (35%) 7-(4-chloro-phenyl)-2-furan-2-yl-[1,2,4]triazolo[1,5-a]pyridin-5-ylamine as pale crystals. MS m/e (%): 311 (M+H+, 100).

1. temperatureThe mixture was refluxed
2. customEvaporation of the solvent and chromatography on silicagel with dichloromethane/methanol 99/1