Palladium(0)-Catalyzed, Copper(I)-Mediated Coupling of Cyclic Thioamides with Alkenylboronic Acids, Organostannanes, and Siloxanes
作者:Nuzhat Arshad、Jamshed Hashim、C. Oliver Kappe
DOI:10.1021/jo900848s
日期:2009.7.17
The Pd-catalyzed cross-coupling of cyclic thioamides and thioureas with alkenylboronic acids, vinyl- and (het)arylstannanes, and arylsiloxanes in the presence of stoichiometric amounts of a Cu(I) cofactor is described. The desulfitative C−C cross-coupling protocol of the Liebeskind−Srogl type is performed under neutral conditions and can be applied to a range of heterocyclic structures with embedded
描述了在化学计量的Cu(I)辅因子存在下,Pd催化的环硫酰胺和硫脲与烯基硼酸,乙烯基和(杂)芳基锡烷以及芳基硅氧烷的交叉偶联。Liebeskind-Srogl类型的脱硫C-C交叉偶联方案是在中性条件下进行的,可应用于具有嵌入的硫酰胺片段的杂环结构。通过使用单模反应器或多模并联反应平台在100°C下进行受控的微波辐射,交叉偶联通常可在1-3 h内完成,并以良好的收率进行。