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2-Phenyl-3-thioformylindolizine and 1,2-dimethyl-3-thioformylindolizine undergo a novel desulfur coupling reaction in the presence of tributylphosphine to give (E)-1,2-bis(3-indolizinyl)ethenes in high yields. The structures of products were confirmed by IR, ^1H NMR, MS, elemental analysis and single crystal X-ray diffraction analysis. The mechanisms involved in various stages of the reaction were discussed. 相似文献
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The Willgerodt-Kindler reaction of acetophenone was studied.Apart from the normal product 4-(benzylthio-carbonyl)morpholine,another product 4-(benzoylthiocarbonyl)morpholine was obtained unexpectedly.The struc-ture of the latter was confirmed by IR,~1H NMR spectra and X-ray diffraction analysis.The mechanism of the reac-tion was discussed. 相似文献
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用改进的Vilsmeier反应由3位未取代的中氮茚合成了一系列3-硫代甲酰基中氮茚(硫醛),对其在甲醇溶液中哌啶催化下与碘化1,2-二甲基吡啶鎓盐及碘化1,4-二甲基吡啶鎓盐的缩合反应进行研究,高收率地合成了相应含中氮茚环的二甲川菁,产物结构经元素分析、红外光谱、1H谱及质谱确证,并测定了其在固态下的荧光性质.结果表明,所有的化合物发射波长都在400nm以上,有希望成为发光材料. 相似文献
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以N,N'-二芳基二硫代草酰胺与1,2-二溴乙烷进行S烷基化反应,合成了一系列2,3-双芳基亚氨基-1,4-二硫杂环己烷,反应在4h内完成,产率52%~62%.产物结构经元素分析,IR,1HNMR及MS表征,并以单晶X射线衍射分析进一步确证. 相似文献
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