Intermolecular 1,4‐Carboamination of Conjugated Dienes Enabled by Cp*Rh
<sup>III</sup>
‐Catalyzed C−H Activation
作者:Tobias Pinkert、Tristan Wegner、Shobhan Mondal、Frank Glorius
DOI:10.1002/anie.201907269
日期:2019.10.14
three-component 1,4-carboamination of dienes is described. Synthetically versatile Weinreb amides were coupled with 1,3-dienes and readily available dioxazolones as the nitrogen source using [Cp*RhCl2 ]2 -catalyzed C-H activation to deliver the 1,4-carboaminated products. This transformation proceeds under mild reaction conditions and affords the products with high levels of regio- and E-selectivity. Mechanistic
描述了用于二烯的三组分1,4-碳氨合的方案。使用[Cp * RhCl2] 2催化的CH活化,将合成用途广泛的Weinreb酰胺与1,3-二烯和现成的二恶唑酮类作为氮源偶联,以提供1,4-碳氨合产物。该转化在温和的反应条件下进行,并提供具有高区域选择性和E选择性的产物。机理研究表明,中间的RhIII-烯丙基物质被一种亲电子的酰胺化试剂以氧化还原中性的方式捕获。