Convenient Synthesis of Some 1,2,4-triazolo[3,4-<i>b</i>]-1,3,4-thiadiazoles and 1,2,4-triazolo[3,4-<i>b</i>]-1,3,4-thiadiazines Bearing 3-Methylthio{7H-1,2,4-triazolo[1,5-<i>d</i>]tetrazol-6-yl}moiety as Possible Antimicrobial Activity
作者:Mamdouh A. M. Taha
DOI:10.1080/10426500801967773
日期:2008.9.15
4-Amino-4H-3-methylthio7H-1,2,4-triazolo[1,5-d]tetrazol-6-yl}-1,2,4-triazole-5thi-ol (1) was condensed with various substituted aromatic aldehydes or acid chlorides to yield a series of arylideneamines 2 or aroylamines 3. These were easily cyclized to the corresponding 6-aryl-3-methylthio7H-1,2,4-triazolo[1,5-d]tetrazol-6-yl-1,2,4-triazolo [3,4-b]-1,3,4-thiadiazoles (4) on treatment with palladium-on-charcoal
4-氨基-4H-3-甲硫基7H-1,2,4-三唑并[1,5-d]四唑-6-基}-1,2,4-三唑-5thi-ol(1)与各种取代的芳香醛或酰氯生成一系列亚芳基胺 2 或芳胺 3。这些很容易环化为相应的 6-芳基-3-甲硫基 7H-1,2,4-三唑并[1,5-d]四唑-6 -yl-1,2,4-三唑并 [3,4-b]-1,3,4-噻二唑 (4) 用钯炭或磷酰氯处理。在磷酰氯的存在下,化合物4也通过1与芳族羧酸的反应直接制备。1 与多种双碳环化试剂(即氯丙酮、丙酮酸、苯甲酰甲酸和安息香)的环缩合反应生成 3-甲硫基7H-1,2,4-三唑并[1,5-d]四唑-6-基}-1,2,4-三唑并[3,4-b]-1,3,4-噻二嗪 (5-8)。