反应详情

A mixture of 0.29 g (0.001 mol) 2-phenyl-7-pyridin-4-yl-[1,2,4]triazolo[1,5-a]pyridin-5-ylamine and 1.13 ml(0.014 mol) pyridine in 30 ml dichloromethane was stirred with 0.63 g(0.003 mol) p-trifluoromethyl benzoyl chloride for 18 hours at room temperature. Then another 0.63 g(0.003 mol) p-trifluoromethyl benzoyl chloride were added and stirring was continued at reflux temperature for 48 hours. After extraction with aqueous sodium hydroxide the organic solvents were distilled off and the residue was recrystallised from methanol to yield 0.28 g(60%) N-(2-phenyl-7-pyridin-4-yl-[1,2,4]triazolo[1,5-a]pyridin-5-yl)-4-trifluoromethyl-benzamide as white crystals. MS m/e (%): 460 (M+H+, 100).

1. temperatureat reflux temperature for 48 hours
2. extractionAfter extraction with aqueous sodium hydroxide the organic solvents
3. distillationwere distilled off
4. customthe residue was recrystallised from methanol