Bulky Picolyl Substituted NHC Ligands and Their Pd
<sup>0</sup>
Complexes
作者:Stefan Warsink、Carien M. S. van Aubel、Jan J. Weigand、Shiuh‐Tzung Liu、Cornelis J. Elsevier
DOI:10.1002/ejic.201000768
日期:2010.12
Heterobidentate N-heterocyclic carbene-picolyl ligands with various substitution patterns and their palladium(0) complexes have been synthesized in excellent yields via their corresponding silver(I) complexes. These complexes are among the first examples where substitution next to the coordinating nitrogen is evaluated systematically. The complexes have been studied by NMR and X-ray diffraction, confirming
具有各种取代模式的杂双齿 N-杂环卡宾-甲基吡啶配体及其钯 (0) 配合物已通过其相应的银 (I) 配合物以优异的产率合成。这些复合物是系统评估配位氮旁边取代的第一个例子。已通过 NMR 和 X 射线衍射研究了配合物,证实了它们的双齿性质。该配合物是炔烃向Z-烯烃转移半氢化的活性预催化剂,其活性和选择性在很大程度上取决于吡啶甲基取代基。观察到高达 92% 的选择性。