Fenton's reagent in dimethyl sulphoxide: an unusual sulphonylating system. X-Ray crystallographic analysis of 4-N,N-dimethylamino-N,N-dimethane-sulphonylaniline
作者:Liberato Cardellini、Lucedio Greci、Pierluigi Stipa、Corrado Rizzoli、Paolo Sgarabotto、Franco Ugozzoli
DOI:10.1039/p29900001929
日期:——
On treatment with Fenton's reagent in dimethyl Sulphoxide nitrosoarenes form sulphonylate products, while the expected N,O-dimethylated hydroxylamine is isolated only in the case of nitrosobenzene in low yield. Nitrosobenzene and 4-cyanonitrosobenzene lead to N-sulphonylhydroxylamines while 4-nitroso-N,N-dimethylaniline and 1-nitroso-2-phenyl-3-acetylindolizine give sulphonamides and ring-sulphonylated
用Fenton试剂在二甲基亚砜中处理时,亚硝基芳烃形成磺酸盐产物,而仅在亚硝基苯的情况下以低收率分离出预期的N,O-二甲基化羟胺。亚硝基苯和4-氰基亚硝基苯生成N-磺酰基羟胺,而4-亚硝基-N,N-二甲基苯胺和1-亚硝基-2-苯基-3-乙酰基吲哚嗪产生磺酰胺和环磺化产物。建议在此过程中起主要作用的是氮阳离子。标题化合物的X射线分析证实了二甲基氨基的三角平面排列及其与苯环的共面性,这与在相关衍生物中发现的结果相符。