(2Z)-2-bromo-3-phenyl-2-propenal 、
4-methyl-N-(3-methyl-1-phenyl-1H-pyrazol-5-yl)benzenesulfonamide 在
2-mesityl-6,7-dihydro-5H-pyrrolo[2,1-c][1,2,4]triazol-2-ium tetrafluoroborate 、
caesium carbonate 作用下,
以
乙酸乙酯 为溶剂,
生成 3-methyl-1,4-diphenyl-7-tosyl-1,4,5,7-tetrahydro-6H-pyrazolo[3,4-b]pyridin-6-one