On triazoles XLI [1]. Synthesis of meso-ionic [1,2,4]triazolo[5,1-<i>c</i>]thiadiazoles
作者:József Reiter、József Barkóczy、Gyula Argay、Alajos Kálmán
DOI:10.1002/jhet.5570370207
日期:2000.3
Type 6 meso-ionic [1,2,4]triazolo[5,1-c]thiadiazoles were synthesised by oxidation of the corresponding N-methyl-N'-(substitutedbenzal)-5-amino-3-substituted-1,2,4-triazol-1-yl)thiohydrazide (3) type bases or their [1,2,4]triazolo[5,1-d][1,2,3,6]tetrazepin-5-thion (4) type ring tautomers. Besides spectroscopical evidence a preparative proof of their structure was also provided. X-ray diffraction analysis
型6的内消旋-离子- [1,2,4]三唑并[5,1- C ^ ]噻二唑由相应的氧化合成Ñ甲基Ñ “ - (substitutedbenzal)-5-氨基-3-取代-1,2- ,4-三唑-1-基)硫酰肼(3)型碱或其[1,2,4]三唑并[5,1- d ] [1,2,3,6]四氮杂-5-硫酮(4)型环互变异构体。除了光谱证据外,还提供了其结构的制备证明。3-甲硫基-6-吗啉代-1,2,4-三唑并[5,1- c ]噻二唑(8)的X射线衍射分析显示,N 1 -S和SC 3的键长非常不同 噻二唑环的键清楚地证明了这些衍生物的介电特性。