This manuscript portrays the CuI-catalyzed Csp-chalcogen bond formation through cross-coupling reactions of propynyl esters and diorganyl dichalcogenides by using DMSO as solvent, at room temperature, under base-free and open-to-air atmosphere conditions. Generally, the reactions have proceeded very smoothly, being tolerant to a range of substituents present in both substrates, affording the novel 3-(organochalcogenyl)prop-2-yn-1-yl esters in moderate to good yields. Noteworthy, the 3-(butylselanyl)prop-2-yn-1-yl benzoate proved to be useful as synthetic precursor in palladium-catalyzed Suzuki and Sonogashira­ type cross-coupling reactions by replacing the carbon–chalcogen bond by new carbon–carbon bond. Moreover, the 3-(phenyl­selanyl)prop-2-yn-1-yl benzoate has shown promising in vitro activity against glioblastoma cancer cells.

中文翻译：

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新型3-（有机铝烷基）丙-2-炔-1-基酯的无碱合成及其合成应用：有望的抗癌药

该手稿描绘了在室温下，无碱和露天的条件下，以DMSO为溶剂，通过丙炔酸酯和二有机基二卤化硅的交叉偶联反应，CuI催化的Csp-硫族元素键的形成。通常，反应进行得非常顺利，可以耐受两种底物中存在的一系列取代基，从而以中等至良好的产率提供了新型的3-（有机硫代烷基）丙-2-炔-1-基酯。值得注意的是，通过用新的碳-碳键代替碳-硫属元素键，苯甲酸3-（丁基-Selanyl）prop-2-yn-1-yl苯甲酸酯被证明可作为钯催化的Suzuki和Sonogashira型交叉偶联反应的合成前体。 。此外，苯甲酸3-（苯硒基）丙-2-炔-1-基酯已显示出对胶质母细胞瘤癌细胞的有希望的体外活性。