A formally zwitterionic ruthenium catalyst precursor for the transfer hydrogenation of ketones that does not feature an ancillary ligand N-H functionality

被引:94
作者
Lundgren, Rylan J.
Rankin, Matthew A.
McDonald, Robert
Schatte, Gabriele
Stradiotto, Mark [1 ]
机构
[1] Dalhousie Univ, Dept Chem, Halifax, NS B3H 4J3, Canada
[2] Univ Alberta, Dept Chem, Xray Crystallography Lab, Edmonton, AB T6G 2M7, Canada
[3] Univ Saskatchewan, Saskatchewan Struct Sci Ctr, Saskatoon, SK S7N 5C9, Canada
关键词
homogeneous catalysis; ketones; ruthenium; transfer hydrogenation; zwitterions;
D O I
10.1002/anie.200700345
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
Fast and furious: Even without the assistance of an N-H donor ligand, the Ra complex shown in the scheme is a remarkably active precatalyst for the transfer hydrogenation of ketones in basic iPrOH (R,R′ = alkyl oraryl), providing near-quantitative yields within minutes and exhibiting consistently high turnover frequencies (104 to 105 h-1) for a diverse range of substrates. (Chemical Equation Presented). © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.
引用
收藏
页码:4732 / 4735
页数:4
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