通过使用可商购的简单K 2 CO 3 / I 2试剂组合,可以实现多种唑类的直接C2-H氧化和亚胺化。碘化唑加成物,产生通过所述原位生成N-杂环碳烯的,为C2-H氧化,亚胺化,和唑类的胺化的关键中间体。重要的是,这些反应在温和的条件下以高至优异的产率进行,可扩展至大量并显示出广泛的底物范围。有趣的是,这种直接的C2-H胺化方法使我们能够获得各种具有药理活性的N 6-烷基或N 6芳基取代的苯并咪唑并喹唑啉酮骨架通过分子内CH串联进行一锅反应。
通过使用可商购的简单K 2 CO 3 / I 2试剂组合,可以实现多种唑类的直接C2-H氧化和亚胺化。碘化唑加成物,产生通过所述原位生成N-杂环碳烯的,为C2-H氧化,亚胺化,和唑类的胺化的关键中间体。重要的是,这些反应在温和的条件下以高至优异的产率进行,可扩展至大量并显示出广泛的底物范围。有趣的是,这种直接的C2-H胺化方法使我们能够获得各种具有药理活性的N 6-烷基或N 6芳基取代的苯并咪唑并喹唑啉酮骨架通过分子内CH串联进行一锅反应。
3-Methylbenzothiazolium salts were allowed to react with superoxide to afford dimeric bis[o-(N-formyl-N-methylamino)phenyl]disulfides and 3-methyl-2-benzothiazolones. The reaction was applied to monocyclic thiazolium salts, and novel ten-membered ring compounds were formed whose structures were elucidated by X-ray crystallographic analysis. These results prompted us to alternative synthesis of the
3-Methylbenzothiazolium salts reacted with superoxide to afford dimeric bis[o-(N-formyl-N-methylamino)phenyl]disulfides and 3-methyl-2-benzothiazolones. The reaction was entirely specific for superoxide, and is of interest from the biological and mechanistic viewpoint.