AbstractBased on readily available N-(2,2,2-trichloro-1-hydroxyethyl)carboxamides, N-(2,2,2-trichloro-1-(3-(3-mercapto-4H-1,2,4-triazol-4-yl)thioureido)ethyl) carboxamides, dehydrosulfurization–under the influence of excess HgO–led to the formation of N-(1-([1,2,4] triazolo[3,4-b][1,3,4]thiadiazol-6-ylamino)-2,2,2-trichloroethyl)carboxamides. The reaction was carried out in boiling glacial acetic acid for 1-1.5 hours. The cyclization products were obtained in 42-62% yields and easily isolated from the reaction mixture. The structure of all synthesized compounds was confirmed by complex spectral studies.
摘要基于易得的N-(2,2,2-三氯-1-羟乙基)羧酰胺,N-(2,2,2-三氯-1-(3-(3-巯基-4H-1,2,4-三唑-4-基)硫脲基)乙基)羧酰胺,通过过量HgO的脱硫化作用,在沸腾的冰乙酸中反应1-1.5小时,形成了N-(1-([1,2,4]三唑[3,4-b][1,3,4]噻二唑-6-基氨基)-2,2,2-三氯乙基)羧酰胺。环化产物以42-62%的产率得到,并且可以很容易地从反应混合物中分离。所有合成化合物的结构都通过复杂的光谱研究得到了确认。