Pronounced effects of substituents on the iridium-catalyzed borylation of aryl C–H bonds
作者:Carl W. Liskey、Carolyn S. Wei、Dale R. Pahls、John F. Hartwig
DOI:10.1039/b913949d
日期:——
Iridium trisboryl complexes containing bisphosphine and bipyridine ligands and pinacolate and catecholate substituents on boron are reported. A large difference in reactivity towards the borylation of CâH bonds is observed for this series of trisboryl complexes, and this difference is attributed to the electron-donating properties of the pinacolate vs.catecholate groups, and the steric and electronic properties of bipyridinevs.bisphosphine ligands.
报告了含有
双膦和双
吡啶配体以及
硼上的
频哪醇酯和
邻苯二酚酯取代基的三
硼铱络合物。这一系列三
硼铱配合物在 CâH 键的
硼化反应性方面存在很大差异,这种差异可归因于
频哪醇酯基团与
邻苯二酚基团的电子捐赠特性,以及双
吡啶配体与双
膦配体的立体和电子特性。