Taking a different path: The first gold-catalyzed annulations with alkynyl thioethers are reported. This transformation provides ready and convergent access into densely-functionalized 1,3-oxazole motifs. The sulfur substituent is integral to accessing the desired reactivity and provides a useful synthetic handle for later elaboration. In contrast with recent reports, the reaction does not follow a ketenethionium pathway.

中文翻译：

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黄金催化环空中的炔基硫醚形成恶唑

采取不同的途径：报道了第一个用炔基硫醚进行金催化的环化反应。这种转变为密集功能化的1,3-恶唑基序提供了现成的和收敛的途径。硫取代基是获得所需反应性必不可少的，并为以后的加工提供了有用的合成方法。与最近的报道相反，该反应不遵循烯酮硫鎓途径。