作者:Chandima J. Narangoda、Timothy R. Lex、Madelyn A. Moore、Colin D. McMillen、Alex Kitaygorodskiy、James E. Jackson、Daniel C. Whitehead
DOI:10.1021/acs.orglett.8b03590
日期:2018.12.21
with electron-rich alkynyl sulfides and selenides is described. These investigations provide a convenient method to access diazacyclobutenes in good yield while tolerating a relatively broad substrate scope of thio-acetylenes. This method provides ready access to a unique and hitherto rarely accessible class of heterocycles. A combination of dynamic NMR, X-ray crystallography, and computation sheds
描述了4-苯基-1,2,4-三唑啉-3,5-二酮(PTAD)与富电子的炔基硫醚和硒化物的正式[2 + 2]环加成反应。这些研究提供了一种方便的方法,以高收率获得二氮杂环丁烯,同时可以承受相对较宽的硫代乙炔底物范围。这种方法提供了对独特的,迄今很少访问的杂环类的现成访问。动态NMR,X射线晶体学和计算的结合揭示了支架的潜在芳香性。