60年代 Dubenko 等用氰乙酰肼和取代苯胺的重氮盐反应合成了氰乙酰肼偶氮化合物,然后将此化合物在乙醇或肼中回流2h,制得了3-氨基-5-氧代-4-苯偶氮吡唑衍生物(Ⅰ).本文将3-氨基-5-吡唑酮在吡啶存在下与苯胺和取代苯胺的重氮盐进行偶合,合成了化合物Ⅰ或它的异构体4-苯腙衍生物.70年代 Elnagdi 等用化合物 In the 1960s, Dubenko et al. Synthesized cyanoacetyl azo compounds by the diazonium salt of cyanoacetyl hydrazide and substituted aniline, and then refluxed the compounds in ethanol or hydrazine for 2 h to obtain 3-amino-5-oxo-4- Phenazopyrazole derivatives (Ⅰ) In this paper, 3-amino-5-pyrazolone is coupled with diazonium salt of aniline and substituted aniline in the presence of pyridine to synthesize the compound I or its isomer 4- Phenylhydrazone derivatives. 70’s Elnagdi and other compounds used