[Pd(L)Cl
<sub>2</sub>
]‐Catalyzed Selective Hydroxylation of Arylboronic Acids to Phenols
作者:Abhishek Dutta Chowdhury、Shaikh M. Mobin、Soumen Mukherjee、Sumit Bhaduri、Goutam Kumar Lahiri
DOI:10.1002/ejic.201100240
日期:2011.7
palladium complex [Pd(L)Cl2] (1) has been prepared by the reaction of Pd(COD)Cl2 (COD = 1,5-cyclooctadiene) with L [N,N′-bis(diphenylphosphanyl)-2-(diphenylphosphanyl)ethanamine]. The ligand L and complex 1 have been characterized by elemental analysis, mass spectrometry and 1H/31P NMR spectroscopy. In the presence of O2, 1 selectivelycatalyzes the hydroxylation of a variety of arylboronicacids to the corresponding
钯配合物 [Pd(L)Cl2] (1) 已通过 Pd(COD)Cl2(COD = 1,5-环辛二烯)与 L [N,N'-双(二苯基膦酰基)-2-(二苯基膦酰基)乙胺]。配体L和配合物1已通过元素分析、质谱和1H/31P NMR光谱表征。在 O2 存在下,1 在 298 K 的低介电常数溶剂中选择性催化各种芳基硼酸羟基化为相应的苯酚衍生物,尽管在具有高介电常数的溶剂中,相同的反应导致两种苯酚的形成和偶联产物,即联芳基。已经解决了从芳基硼酸与 1 形成选择性苯酚的机制方面。
van Alphen, Recueil des Travaux Chimiques des Pays-Bas, 1932, vol. 51, p. 453,457