Efficient and selective alkene hydrosilation promoted by weak, double Si-H activation at an iron center

被引：15

作者：

Smith, Patrick W. ^{[1
,2
]}

Dong, Yuyang ^{[1
,3
]}

Tilley, T. Don ^{[1
]}

机构：

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

[2] MIT, Dept Chem, Cambridge, MA 02139 USA

[3] Harvard Univ, Dept Chem & Chem Biol, 12 Oxford St, Cambridge, MA 02138 USA

来源：

CHEMICAL SCIENCE | 2020年 / 11卷 / 27期

基金：

美国国家科学基金会; 美国国家卫生研究院;

关键词：

SILYLENE COMPLEXES; HYDROSILYLATION; RUTHENIUM; REACTIVITY; CATALYSTS; LIGANDS; DINITROGEN; ADDUCTS; SILICON; ACCESS;

D O I：

10.1039/d0sc01749c

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Cationic iron complexes [Cp*((Pr2MeP)-Pr-i)FeH2SiHR](+), generated and characterized in solution, are very efficient catalysts for the hydrosilation of terminal alkenes and internal alkynes by primary silanes at low catalyst loading (0.1 mol%) and ambient temperature. These reactions yield only the corresponding secondary silane product, even with SiH(4)as the substrate. Mechanistic experiments and DFT calculations indicate that the high rate of hydrosilation is associated with an inherently low barrier for dissociative silane exchange (product release).

引用

页码：7070 / 7075

页数：6

共 29 条

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