Coupling of pyrazole-3(5)-diazonium salts with cyclic 1,3-dicarbonyl (active methylene) compounds followed by cyclocondensation of the resulting hetarylhydrazones gave novel pyrazolo[5,1-c][1,2,4]triazines.
                                    将
吡唑-3(5)-重氮盐与环状1,3-二羰基(活性亚甲基)化合物偶联,然后将所得杂芳基腙环缩合,得到新型
吡唑并[5,1-c]
[1,2,4]三嗪。