Synthesis of palladium(0) and -(II) complexes with chelating bis(N-heterocyclic carbene) ligands and their application in semihydrogenation

被引：40

作者：

Sluijter, Soraya N. ^{[1
]}

Warsink, Stefan ^{[2
]}

Lutz, Martin ^{[3
]}

Elsevier, Cornelis J. ^{[1
]}

机构：

[1] Univ Amsterdam, Vant Hoff Inst Mol Sci, NL-1090 GD Amsterdam, Netherlands

[2] Univ Free State, Dept Chem, Bloemfontein, South Africa

[3] Univ Utrecht, Utrecht, Netherlands

来源：

DALTON TRANSACTIONS | 2013年 / 42卷 / 20期

关键词：

N-HETEROCYCLIC-CARBENE; STRUCTURAL-CHARACTERIZATION; NHC LIGANDS; HYDROGENATION CATALYSTS; BISCARBENE COMPLEXES; ZEROVALENT PALLADIUM; NICKEL(II) COMPLEXES; COUPLING REACTIONS; OLEFIN COMPLEXES; TRANSMETALATION;

D O I：

10.1039/c3dt32835j

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A transmetallation route, using silver(I) precursors, to several zero-and di-valent palladium complexes with chelating bis(N-heterocyclic carbene) ligands bearing various N-substituents has been established. The resulting complexes have been characterized by NMR and mass spectroscopy. In addition, the structure of a representative compound, [Pd-0(bis-(Mes)NHC)(eta(2)-ma)] (3a), was confirmed by X-ray crystal structure determination. In contrast to the transfer semihydrogenation, in which only low activity was observed, complex 3a showed activity (TOF = 49 mol(sub) mol(cat)(-1) h(-1)) and selectivity comparable to its monodentate counterparts in the semihydrogenation of 1-phenyl-1-propyne with molecular hydrogen.

引用

页码：7365 / 7372

页数：8

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