Synthesis of 1,2,4-triazole, 1,2,4-triazolo[3,4-<i>b</i>][1,3,4]thiadiazole and 1,2,4-triazolo[3,4-<i>b</i>][1,3,4]thiadiazine derivatives of benzotriazole
作者:S. M. El-Khawass、N. S. Habib
DOI:10.1002/jhet.5570260131
日期:1989.1
or with phenacyl bromides afforded two series of fused heterocycles namely; 6-substituted-3-[1-(1H-benzotriazole)methyl]-1,2,4-triazolo[3,4-b][1,3,4]thiadiazoles 7a-e and 6-substituted phenyl-3-[1-(1H-benzotriazole)methyl]-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazines 8a-e respectively. The structure of the newly synthesized compounds was elucidated by elemental analyses, ir and nmr spectra.
一种新型系列1-(1-羰基甲基1的ħ -苯并三唑)氨基硫脲3A-E中合成,然后用氢氧化钠环化,得到1-(4-取代的-4- ħ -1,2,4-三唑-3-硫羰-5-基)甲基-1- ħ -苯并三唑4A-E ,将其烷基化,乙基碘,以1-(3-乙硫基-4-取代-4- ħ -1,2,4-三唑-5-基) -甲基-1 H-苯并三唑5b-e。1 H-苯并三唑-1-乙酸酰肼(2)与二硫化碳和氢氧化钾的反应,然后与水合肼反应,得到1-(4-氨基-4 H -1,2,4-三唑-3-硫酮-5 -基)甲基-1 H-苯并三唑(6)。其随后在三氯氧磷或苯甲酰溴存在下与羧酸缩合,得到两个系列的稠合杂环:6-取代的-3- [1-(1- H-苯并三唑)甲基] -1,2,4-三唑[3,4- b ] [1,3,4]噻二唑7a-e和6-取代的苯基-3 -[1-(1- H-苯并三唑)甲基] -7 H -1,2,4-三唑并[3,4- b ]