Coordination chemistry of gold with N-phosphine oxide-substituted imidazolylidenes (POxIms)

被引：13

作者：

Branzi, Lorenzo ^{[1
]}

Baron, Marco ^{[1
]}

Armelao, Lidia ^{[1
,2
]}

Rancan, Marzio ^{[2
]}

Sgarbossa, Paolo ^{[3
]}

Graiff, Claudia ^{[4
]}

Poethig, Alexander ^{[5
,6
]}

Biffis, Andrea ^{[1
]}

机构：

[1] Univ Padua, Dipartimento Sci Chim, Via F Marzolo 1, I-35131 Padua, Italy

[2] Univ Padua, CNR, ICMATE, Dipartimento Sci Chim, Via F Marzolo 1, I-35131 Padua, Italy

[3] Univ Padua, Dipartimento Ingn Ind, Via F Marzolo 9, I-35131 Padua, Italy

[4] Univ Parma, Dipartimento Sci Chim Vita & Sostenibilita Ambien, Parco Area Sci 17-A, I-43124 Parma, Italy

[5] Tech Univ Munich, Catalysis Res Ctr, Ernst Otto Fischer Str 1, D-85747 Garching, Germany

[6] Tech Univ Munich, Dept Chem, Ernst Otto Fischer Str 1, D-85747 Garching, Germany

来源：

NEW JOURNAL OF CHEMISTRY | 2019年 / 43卷 / 44期

关键词：

HETEROCYCLIC CARBENE; COMPLEXES; LIGANDS; AU; HYDROAMINATION; TRICATION; EFFICIENT; INSIGHTS; ANIONS; NHC;

D O I：

10.1039/c9nj04911h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

N-Phosphine oxide-substituted imidazolylidenes (POxIms) have been employed as heteroditopic ligands towards gold centres. Both bis-carbene and mono-carbene gold(i) complexes have been obtained, depending on the steric bulk of the employed POxIm ligand. Oxidation of the gold(i) complexes with halogens or halogen synthons allows access to both bis-carbene and mono-carbene gold(iii) complexes, depending on the nature of the starting gold(i) complex and on the oxidation conditions. In all these complexes, the phosphanyl oxide moiety of the ligand is found to not be coordinated by the gold centre, although the crystallographic and spectroscopic characterization of the compounds suggests in most cases the existence of weak electrostatic interactions. A preliminary screening of the complexes as precatalysts in the intermolecular hydroamination of phenylacetylene with mesitylamine has also been carried out.

引用

页码：17275 / 17283

页数：9

共 40 条

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