作者:Gregory M. Shutske
DOI:10.1002/jhet.5570180533
日期:1981.8
The synthesis of some novel anhydro-3-mercapto-5-pyrazinyl-1,2,4-triazolium hydroxides 5 is described. The appropriate 1-methylhydrazides 3 were condensed with isothiocyanates to give the thiosemicarbazides 4 which were cyclized to 5 under mildly basic conditions. A few 1,2,4-triazole-3-thiones 8 were synthesized for comparison, starting with the 2-methylhydrazides 6 and then carrying out analogous
描述了一些新颖的脱水-3-巯基-5-吡嗪基-1,2,4-三唑鎓氢氧化物5的合成。将适当的1-甲基酰肼3与异硫氰酸酯缩合,得到硫代氨基脲4,将其在温和的碱性条件下环化为5。为了比较,合成了一些1,2,4-三唑-3-硫酮8,从2-甲基酰肼6开始,然后进行类似的合成转化。