Alkene hydrosilation by a cationic hydrogen-substituted iridium silylene complex

被引：85

作者：

Calimano, Elisa

Tilley, T. Don ^{[1
]}

机构：

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

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 29期

关键词：

D O I：

10.1021/ja803332h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A cationic hydrogen-substituted iridium silylene complex ((PNP)(H)Ir = Si(Mes)H][B(C6F5)(4)] (2) was synthesized via hydride abstraction from the corresponding neutral iridium silyl hydride complex, DFT calculations for 2 indicate that the cationic charge is localized at the silicon center and depict a LUMO with predominant silicon p-orbital character. Notably, complex 2 reacts rapidly with unhindered alkenes at ambient temperatures to afford disubstituted silylene complexes via Si-C bond formation. Complex 2 is also the catalyst for alkene hydrosilation of primary silanes with a high degree of anti-Markovnikov selectivity.

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页码：9226 / +

页数：3

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