C-H Bond Activations by Monoanionic, PNP-Supported Scandium Dialkyl Complexes

被引：37

作者：

Levine, Daniel S. ^{[1
,2
]}

Tilley, T. Don ^{[1
,2
]}

Andersen, Richard A. ^{[1
,2
]}

机构：

[1] Univ Calif Berkeley, Dept Chem, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Div Chem Sci, Berkeley, CA 94720 USA

来源：

ORGANOMETALLICS | 2015年 / 34卷 / 19期

基金：

美国国家卫生研究院;

关键词：

METATHESIS REACTIONS; PERMETHYLSCANDOCENE DERIVATIVES; NI COMPLEXES; METHANE; FUNCTIONALIZATION; CHEMISTRY; LUTETIUM; EXCHANGE; ALKYL; ORGANOLANTHANIDES;

D O I：

10.1021/acs.organomet.5b00213

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of scandium dialkyl complexes, (PNP)ScR2 (R = neopentyl, trimethylsilylmethyl), supported by the monoanionic, chelating PNP ligand (2,5-bis(dialkylphosphinomethyl)-pyrrolide; alkyl = cydohexyl, tert-butyl) was synthesized, and the reactivities of these complexes toward simple hydrocarbons was investigated. The scandium-carbon bonds undergo sigma-bond metathesis reactions with hydrogen, and these complexes are catalysts for the hydrogenation of alkenes. Reactions with primary amines led to formation of amido complexes that undergo cyclometalation via sigma-bond metathesis, without involvement of an imido complex intermediate. A variety of carbon-hydrogen bonds are also activated, including sp-, sp(2)-, and sp(3)-C-H bonds (intramolecularly in the latter case).

引用

页码：4647 / 4655

页数：9

共 42 条

[1] SELECTIVE INTERMOLECULAR CARBON-HYDROGEN BOND ACTIVATION BY SYNTHETIC METAL-COMPLEXES IN HOMOGENEOUS SOLUTION [J].