Lutidine-Derived Ru-CNC Hydrogenation Pincer Catalysts with Versatile Coordination Properties

被引：96
作者：
Filonenko, Georgy A. [1 ,2 ]
Cosimi, Elena [3 ]
Lefort, Laurent [3 ]
Conley, Matthew P. [4 ]
Coperet, Christophe [4 ]
Lutz, Martin [5 ]
Hensen, Emiel J. M. [1 ,2 ]
Pidko, Evgeny A. [1 ,2 ]
机构：
[1] Eindhoven Univ Technol, Inorgan Mat Chem Grp, Schuit Inst Catalysis, POB 513, NL-5600 MB Eindhoven, Netherlands
[2] Eindhoven Univ Technol, Inst Complex Mol Syst, NL-5600 MB Eindhoven, Netherlands
[3] DSM Innovat Synth BV, NL-6160 MD Geleen, Netherlands
[4] ETH, Dept Chem & Appl Biosci, CH-8093 Zurich, Switzerland
[5] Univ Utrecht, Bijvoet Ctr Biomol Res, NL-3584 CH Utrecht, Netherlands
来源：
ACS CATALYSIS | 2014年 / 4卷 / 08期
关键词：
ruthenium; hydrogenation; metal-ligand cooperation; N-heterocyclic carbene; nitrile activation; METAL-LIGAND COOPERATION; N-HETEROCYCLIC CARBENES; HETEROGENEOUS CATALYSIS; BOND FORMATION; RUTHENIUM(II) COMPLEXES; IMIDAZOLIUM SALT; IRON(II) COMPLEX; ESTERS; ACTIVATION; NITRILES;
D O I：
10.1021/cs500720y
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Lutidine-derived bis-N-heterocyclic carbene (NHC) ruthenium CNC-pincer complexes (Ru-CNC's) were prepared. Depending on the synthetic procedure, normal (1, 2) or mixed normal/abnormal NHC-complexes (3) are formed. In the presence of phosphazene base, Ru-CNC complexes activate nitriles to give ketimino compounds 4-6. Nitrile adduct 4 shows reactivity toward strong bases to yield dearomatized complex 7, which heterolytically activates H-2 to form the bis-hydrido complex 8. Finally, these Ru-CNC's are active in catalytic hydrogenation of CO2 to formate salts, and unlike the phosphine-containing Ru-PNP counterpart, they also catalyze the selective hydrogenation of esters to alcohols.
引用
收藏
页码：2667 / 2671
页数：5
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