A novel Fe–NHC catalytic system allows the alkyl–alkyl cross-coupling reaction of alkyl halides and alkylmagnesium reagents has been developed. To our knowledge, this is the first Fe-catalysed Kumada-type coupling for the formation of C(sp3)–C(sp3) bonds in the presence of functional groups. The process takes place under mild conditions, avoiding the formation of β-elimination products. Mechanistic
已开发出一种新颖的Fe–NHC催化系统,可实现卤代烷与烷基
镁试剂的烷基-烷基交叉偶联反应。据我们所知,这是第一个在功能基团存在下
铁催化的Kumada型
偶联剂,用于形成C(sp 3)–C(sp 3)键。该过程在温和的条件下进行,避免了β-消除产物的形成。机理研究表明,通过用
格氏试剂还原而形成的Fe(I)配合物是活性物质的中间产物。