Coupling of Sulfoxonium Ylides with Arynes: A Direct Synthesis of Pro-Chiral Aryl Ketosulfoxonium Ylides and Its Application in the Preparation of α-Aryl Ketones
作者:Alexánder Garay Talero、Bruna Simões Martins、Antonio C. B. Burtoloso
DOI:10.1021/acs.orglett.8b03126
日期:2018.11.16
A general, mild, and versatile synthesis of the challenging α-aryl-β-ketosulfoxonium ylides has been developed for the first time, substituting traditional methods starting from diazo compounds. The arylation of easily accessible β-ketosulfoxonium ylides using aryne chemistry allowed the preparation of a large scope of the pro-chiral ylides in very good yields (40 examples; up to 85%). As applications
首次开发了具有挑战性的α-芳基-β-酮硫氧鎓叶立德碱的一般,温和和通用的合成方法,取代了重氮化合物开始的传统方法。使用芳烃化学对易得的β-酮基硫代肟基进行芳基化,可以以非常高的收率制备大范围的手性前基化物(40个实例;高达85%)。作为应用,这些乙炔经脱硫后,以良好的收率(高达98%)以及其他重要的衍生物平稳地转化为α-芳基酮。