AbstractMetal/ligand in situ assembly is crucial for tailoring the reactivity & selectivity in transition metal catalysis. Cooperative catalysis via a single metal/two ligands is still underdeveloped, since it is rather challenging to harness the distinct reactivity profiles of the species generated by self‐assembly of a single metal precursor with a mixture of different ligands. Herein, we report a catalytic system composed of a single metal/two ligands for a three‐component reaction of polyfluoroarene, α‐diazo ester, and allylic electrophile, leading to highly efficient construction of densely functionalized quaternary carbon centers, that are otherwise hardly accessible. Mechanistic studies suggest this reaction follows a cooperative bimetallic pathway via two catalysts with distinct reactivity profiles, which are assembled in situ from a single metal precursor and two ligands and work in concert to escort the transformation.
 
                                    摘要 
金属/
配体原位组装对于定制过渡
金属催化的反应性和选择性至关重要。由于利用单一
金属前体与不同
配体混合物的自组装所产生的物种的独特反应性特征具有相当大的挑战性,因此通过单一
金属/两种
配体进行的协同催化仍未得到充分发展。在此,我们报告了一种由单一
金属/两种
配体组成的催化体系,该体系可用于多
氟烯烃、α-重氮酯和烯丙基亲电子体的三组分反应,从而高效地构建出高密度官能化的季碳中心,而这些中心在其他情况下是很难获得的。机理研究表明,该反应是通过两种具有不同反应活性的催化剂,以一种
金属前体和两种
配体为原料在原位组装而成,并通过协同作用护送转化过程。