Rhodium and iridium complexes containing diphenyl-2-(3-methyl)indolylphosphine: synthesis, structure and application in the catalytic transfer hydrogenation of ketones

被引:24
作者
Kuo, Yu-Ying [1 ]
Haddow, Mairi F. [1 ]
Perez-Redondo, Adrian [1 ]
Owen, Gareth R. [1 ]
机构
[1] Univ Bristol, Sch Chem, Bristol BS8 1TS, Avon, England
关键词
ASYMMETRIC TRANSFER HYDROGENATION; PYRAZOLYL-IMIDAZOLYL LIGAND; X-RAY; C-H; RUTHENIUM(II) COMPLEXES; NMR; RH; COORDINATION; REACTIVITY; INDOLPHOS;
D O I
10.1039/c0dt00293c
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The synthesis and characterisation of a number of group nine complexes containing the recently reported ligand, diphenyl-2-(3-methyl) indolylphosphine, is presented herein. The complexes [RhCl(COD){PPh2(C9H8N)}] (1), [IrCl(COD){PPh2(C9H8N)}] (2), [RhCl(NBD){PPh2(C9H8N)}] (3) and [Rh(COD)(MeCN){PPh2(C9H8N)}]BF4 (4) (where COD = 1,5-cyclooctadiene, NBD = 2,5-norbornadiene) have been structurally characterised by X-ray crystallography. The complex [Rh-2(COD)(2){N(Me) = C(H)Ph)}{PPh2(C9H8N)}][BF4](2) (8) was also isolated and structurally characterised. Complex 8 contains a '[Rh(COD)]' fragment coordinated to the aromatic ring of the indolyl group, providing the first example of a eta(6) coordination mode for this ligand. The synthesised complexes were investigated for their activity in the catalytic transfer hydrogenation of ketones and found to be moderately active catalysts.
引用
收藏
页码:6239 / 6248
页数:10
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