Ruthenium-Catalyzed Dehydrogenation of Ammonia Boranes

被引：276

作者：

Blaquiere, Nicole ^{[1
]}

Diallo-Garcia, Sarah ^{[1
]}

Gorelsky, Serge I. ^{[1
]}

Black, Daniel A. ^{[1
]}

Fagnou, Keith ^{[1
]}

机构：

[1] Univ Ottawa, Dept Chem, Ctr Catalysis Res & Innovat, 10 Marie Curie, Ottawa, ON K1N 6N5, Canada

来源：

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY | 2008年 / 130卷 / 43期

基金：

加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1021/ja804235t

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The dehydrogenation of ammonia borane (AB) and methylammonia borane (MeAB) is shown to be catalyzed by several Ru-amido complexes. Up to 1 equiv of H-2 (1.0 system wt %) is released from AB by as little as 0.03 mol % Ru within 5 min, and up to 2 equiv of H-2 (3.0 system wt %) are released from MeAB with 0.5 mol % Ru in under 10 min at room temperature, the first equivalent emerging within 10 s. Also, a mixture of AB/MeAB yields up to 3.6 system wt % H-2 within 1 h with 0.1 mol % Ru. Computational studies were performed to elucidate the mechanism of dehydrogenation of AB. Finally, it was shown that alkylamine-boranes can serve as a source of H-2 in the Ru-catalyzed reduction of ketones and imines.

引用

页码：14034 / +

页数：3

共 39 条

[1] Mechanism of the hydrogenation of ketones catalyzed by trans-dihydrido(diamine)ruthenium(II) complexes [J].