五氟苯基咪唑钯（II）配合物：铃木交叉偶联反应的催化剂。

Pentafluorophenyl imidato palladium(II) complexes: catalysts for Suzuki cross-coupling reactions.

作者信息

Ruiz José, Vicente Consuelo, Cutillas Natalia, Pérez José

机构信息

Departamento de Quimica Inorganica, Universidad de Murcia, 30071 Murcia, Spain.

出版信息

Dalton Trans. 2005 Jun 7(11):1999-2006. doi: 10.1039/b503101j. Epub 2005 May 4.

DOI:10.1039/b503101j

PMID:15909050

Abstract

Novel N-bonded imidato complexes of general formula [Pd(N-N)(C6F5)(imidate)](imidate = maleimidate, succinimidate or phthalimidate; N-N = 2,2'-bipyridine (bipy), 4,4'-dimethyl-2,2'-bipyridine (Me2bipy) or N,N,N',N'-tetramethylethylenediamine (tmeda)), [NBu4][Pd(C6F5)(H2O)(succinimidate)2] and [NBu4][Pd(C6F5)(L)(succinimidate)2](L = PPh3 or t-BuNC) have been synthesised. These complexes are air-, light- and moisture-stable. The crystal structures of [Pd(tmeda)(C6F5)(maleimidate)].H2O.0.5CHCl3, [NBu4][Pd(C6F5)(H2O)(succinimidate)2].H2O and [NBu4][Pd(C6F5)(t-BuNC)(succinimidate)2].2H2O have been determined by X-ray diffraction. Many of these new complexes are shown to be active phosphine-free palladium catalysts/precatalysts for the Suzuki cross-coupling reactions of aryl bromides and aryl chlorides with phenylboronic acid.

摘要

已合成通式为[Pd(N-N)(C6F5)(亚胺酯)]（亚胺酯 = 马来酰亚胺酯、琥珀酰亚胺酯或邻苯二甲酰亚胺酯；N-N = 2,2'-联吡啶（bipy）、4,4'-二甲基-2,2'-联吡啶（Me2bipy）或N,N,N',N'-四甲基乙二胺（tmeda））的新型N键合亚胺基配合物、[NBu4][Pd(C6F5)(H2O)(琥珀酰亚胺酯)2]和[NBu4][Pd(C6F5)(L)(琥珀酰亚胺酯)2]（L = PPh3或t-BuNC）。这些配合物对空气、光和湿气稳定。通过X射线衍射确定了[Pd(tmeda)(C6F5)(马来酰亚胺酯)].H2O.0.5CHCl3、[NBu4][Pd(C6F5)(H2O)(琥珀酰亚胺酯)2].H2O和[NBu4][Pd(C6F5)(t-BuNC)(琥珀酰亚胺酯)2].2H2O的晶体结构。已表明许多这些新型配合物是用于芳基溴化物和芳基氯化物与苯硼酸的铃木交叉偶联反应的无膦活性钯催化剂/前催化剂。