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
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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