AbstractActivation of C−C bonds allows editing of molecular skeletons, but methods for selective activation of nonpolar C−C bonds in the absence of a chelation effect or a driving force derived from opening of a strained ring are scarce. Herein, we report a method for ruthenium‐catalyzed activation of nonpolar C−C bonds of pro‐aromatic compounds by means of π‐coordination‐enabled aromatization. This method was effective for cleavage of C−C(alkyl) and C−C(aryl) bonds and for ring‐opening of spirocyclic compounds, providing an array of benzene‐ring‐containing products. The isolation of a methyl ruthenium complex intermediate supports a mechanism involving ruthenium‐mediated C−C bond cleavage.
摘要 C-C 键的活化可以编辑分子骨架,但在没有螯合效应或打开应变环产生的驱动力的情况下,选择性活化非极性 C-C 键的方法却很少。在此,我们报告了一种通过 π 配位促成的芳香化作用,在钌催化下活化原芳香族化合物非极性 C-C 键的方法。这种方法对 C-C(烷基)键和 C-C(芳基)键的裂解以及螺环化合物的开环非常有效,可提供一系列含苯环的产物。甲基钌络合物中间体的分离支持了钌介导的 C-C 键裂解机制。