Synthesis, characterization and catalytic activity of novel ruthenium complexes bearing NNN click based ligands
作者:Roberto Sole、Marco Bortoluzzi、Anke Spannenberg、Sergey Tin、Valentina Beghetto、Johannes G. de Vries
DOI:10.1039/c9dt01822k
日期:——
available reagents. The ruthenium complexes were obtained by heating the Ru(PPh3)3Cl2 precursor and the tridentate NNN ligand in toluene under reflux for 2 hours, achieving yields of 82–87%. These complexes were fully characterized by means of NMR, FT-IR and high resolution ESI spectroscopy. The crystal structure of one of the complexes was determined. These complexes showed excellent activity and
新颖空气稳定钌(II)配合物轴承三齿配体的双((1-苄基1 ħ 1,2,3-三唑-4-基)甲基)胺(L1),1-(1-苄基1 ħ - 1,2,3-三唑-4-基)-N-(吡啶-2-基甲基)甲胺(L2)或2-(4-苯基-1 H -1,2,3-三唑-1-基)-合成了N-(吡啶-2-基甲基)乙-1-胺(L3)。基于氮的配体易于通过点击化学使用廉价的和可商购的试剂来制备。通过加热Ru(PPh 3)3 Cl 2获得钌络合物在回流下甲苯中的前驱体和三齿NNN配体回流2小时,获得82-87%的产率。通过NMR,FT-IR和高分辨率ESI光谱对这些络合物进行了充分表征。确定了一种配合物的晶体结构。这些配合物在酮和醛的氢化中显示出优异的活性和选择性。DFT计算表明,配合物3可能通过外球催化循环而不是通过内球机理反应。