Group IV Organometallic Compounds Based on Dianionic “Pincer” Ligands: Synthesis, Characterization, and Catalytic Activity in Intramolecular Hydroamination Reactions
作者:Lapo Luconi、Andrea Rossin、Alessandro Motta、Giulia Tuci、Giuliano Giambastiani
DOI:10.1002/chem.201203644
日期:2013.4.8
contributed to highlight the non‐innocent role played by the donor atom set in the control of the cyclometallation kinetics. The as‐prepared bis‐amido catalysts were found to be good candidates for the intramolecular hydroamination/cyclization of primary aminoalkenes. The ability of these compounds to promote such a catalytic transformation efficiently (by providing, in some cases, fast and complete substrate
通过最简单方便的直接金属诱导的C芳基制备了由不对称双阴离子N,C,N'钳型配体稳定的Zr IV和Hf IV二酰胺配合物H键活化。简单的配体修饰有助于突出供体原子在控制环金属化动力学中所起的非清白作用。发现制备的双氨基催化剂是伯氨基烯烃的分子内加氢胺化/环化的良好候选者。这些化合物有效地促进这种催化转化的能力(通过在某些情况下提供快速和完全的底物转化)构成了朝着催化体系迈出的重要一步,该催化体系可以在相对较低的催化剂负载量和较温和的反应条件下运行。动力学研究和底物范围研究,以及对实际系统的初步DFT计算,