The present disclosure relates to a method for preparing a metal catalyst comprising at least one ligand that is coordinated to the metal through at least one phosphorous (P) atom and at least one nitrogen (N) atom, the method comprising reacting a metal pre-cursor complex with an acid ad salt of an aminophosphine, diaminophosphine, aminodiphosphine or diaminodiphosphine, in the presence of a base.
Mono and dinuclear palladium complexes of o-alkyl substituted arylphosphane ligands: Solvent-dependent syntheses, NMR-spectroscopic characterization and X-ray crystallographic studies
作者:Sauli Vuoti、Matti Haukka、Jouni Pursiainen
DOI:10.1016/j.jorganchem.2007.07.052
日期:2007.10
ane)]2 were also determined. We report a systematic, solvent-dependent method to prepare palladium(II) complexes of the aryl phosphines o-methylphenyldiphenylphosphane, o-cyclohexylphenyldiphenylphosphane and o-phenylphenyldiphenylphosphane with a desired nuclearity. We demonstrated that chlorinated solvents promote the formation of dinuclear chlorine-bridged palladium complexes for all five ligands
在各种溶剂中用膦配体邻甲基苯基二苯基膦,邻乙基苯基二苯基膦,邻异丙基苯基二苯基膦,邻环己基苯基二苯基膦和邻苯基苯基二苯基膦制备邻烷基取代的膦的氯化钯(II)配合物。配合物的结构通过1 H NMR和31 P NMR光谱及元素分析进行表征。PdCl 2(邻甲基苯基二苯基膦)2,PdCl 2(o-异丙基苯基二苯基膦)2,PdCl 2(邻环己基苯基二苯基膦)2,PdCl 2(邻苯基苯基二苯基膦)2,[PdCl 2(邻甲基苯基二苯基膦)] 2,[PdCl 2(邻乙基苯基二苯基膦)] 2和[PdCl 2(o -环己基苯基二苯基膦)] 2也被确定。我们报告了一种系统的,依赖溶剂的方法来制备芳基膦o的钯(II)配合物-甲基苯基二苯基膦,邻环己基苯基二苯基膦和邻苯基苯基二苯基膦具有所需的核。我们证明了氯化溶剂促进了所有五个配体的双核氯桥钯复合物的形成。在起始溶剂仅微溶于溶剂的其他溶剂中,配体优先形成单核钯配合物。
Water soluble phosphines
作者:David J. Brauer、Martin Hingst、Konstantin W. Kottsieper、Christian Liek、Thomas Nickel、Michael Tepper、Othmar Stelzer、William S. Sheldrick
DOI:10.1016/s0022-328x(01)01371-7
日期:2002.2
position to the halogen in the aromatic ring systems. It may be performed in protic and aprotic solvents. The chiral spirocyclic boronato complex 15a is formed upon reaction of 3 with boric acid, while with benzeneboronic acid 15c with a peripheral Lewis acid group is obtained. The Pd-mediated PC coupling reaction of primary phosphines proceeds stepwise, tailor-made chiral secondary (16) and tertiary
the aroylcobalt complexes 11 and 12, respectively. Complex 6 reacts with iodomethane in an oxidative substitution reaction yielding a structurally characterized octahedral complex mer-13, which eliminates a methyl group in THF at 20 °C to form a pentacoordinate cobalt(II) complex 14. Complex 3 oxidatively adds iodomethane in a stereoselective cis addition to give the cobalt(III) complex mer-15, which
Palladium‐Catalyzed Suzuki–Miyaura Cross‐Coupling of Various Aryl Halides Using
<i>ortho</i>
‐Alkyl‐Substituted Arylphosphanes and (
<i>ortho</i>
‐Alkylphenyl)alkylphosphanes under Microwave Heating