Department of Chemistry, National Taiwan University, Taipei, Taiwan 106, ROC.
Dalton Trans. 2012 Jan 28;41(4):1158-64. doi: 10.1039/c1dt11065a. Epub 2011 Nov 24.
Complexation of a rigid multi-pyridine ligand bis(2-pyridyl)-1,8-naphthyridine (bpnp) with [Cu(2)(TFA)(4)] (TFA = trifluoroacetate) resulted in the formation of a dinuclear copper(II) complex, namely [Cu(2)(bpnp)(μ-OH)(TFA)(3)] (1). This complex has been characterized by X-ray crystallographic, spectroscopic and elemental analyses. Complex 1 is an efficient catalyst for the oxidative coupling of various 2,6-disubstituted phenols with molecular oxygen. Yields and selectivity depend on the reaction conditions employed, the best results being obtained in isopropanol or dioxane at 90 °C with yields of >99%. Mechanistic pathway of the catalysis is discussed.
刚性多吡啶配体双(2-吡啶基)-1,8-萘啶(bpnp)与[Cu(2)(TFA)(4)]（TFA = 三氟乙酸）的络合作用导致形成双核铜(II)配合物，即[Cu(2)(bpnp)(μ-OH)(TFA)(3)]（1）。该配合物通过 X 射线晶体学、光谱和元素分析进行了表征。配合物 1 是一种高效的催化剂，可用于各种 2,6-取代苯酚与分子氧的氧化偶联。产率和选择性取决于所采用的反应条件，在 90°C 的异丙醇或二恶烷中获得最佳结果，产率>99%。讨论了催化的机理途径。
