Rhodium Complexes Bearing 1,10-Phenanthroline Analogue Bis-NHC Ligands Are Active Catalysts for Transfer Hydrogenation of Ketones

被引：35
作者：
Gierz, Verena [1 ]
Urbanaite, Aurelija [1 ]
Seyboldt, Alexander [1 ]
Kunz, Doris [1 ]
机构：
[1] Univ Tubingen, Inst Anorgan Chem, D-72076 Tubingen, Germany
来源：
ORGANOMETALLICS | 2012年 / 31卷 / 21期
关键词：
N-HETEROCYCLIC CARBENE; EFFICIENT TRANSFER HYDROGENATION; OXIDATIVE ADDITION; IRIDIUM COMPLEXES; C-H; COORDINATION; REACTIVITY; DONOR; ACTIVATION; SILVER;
D O I：
10.1021/om3008103
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
Synthesis of a new example of the pyridazine annelated bis(N-heterocyclic carbene) ligand 3b (vegi) bearing benzyl substituents. is reported, as well as the synthesis of its Cationic Rh(cod) complex 5b. The mechanism of formation of the [Rh(cod)(vegi)](+) complexes was investigated, showing stepwise deprotonation of the imidazolium moieties via the mono-carbene imidazolium Rh(cod)Cl species 4. The [Rh(cod)(vegi)](+) 4 complexes 5a,b show catalytic activity in the transfer hydrogenation of even sterically hindered ketones.
引用
收藏
页码：7532 / 7538
页数：7
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