Phosphine Oxide Based Supramolecular Ligands in the Rhodium-Catalyzed Asymmetric Hydrogenation

被引：12

作者：

Daubignard, Julien ^{[1
]}

Detz, Remko J. ^{[1
]}

de Bruin, Bas ^{[1
]}

Reek, Joost N. H. ^{[1
]}

机构：

[1] Univ Amsterdam, Vant Hoff Inst Mol Sci, Sci Pk 904, NL-1098 XH Amsterdam, Netherlands

来源：

ORGANOMETALLICS | 2019年 / 38卷 / 20期

基金：

美国国家科学基金会;

关键词：

CHIRAL METAL-COMPLEXES; BIDENTATE LIGANDS; ENANTIOSELECTIVE HYDROGENATION; HOMOGENEOUS CATALYSIS; OLEFIN HYDROGENATION; MIXTURES; PALLADIUM; HYDROFORMYLATION; PHOSPHORAMIDITES; BOND;

D O I：

10.1021/acs.organomet.9b00484

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A series of bisphosphine monoxides and a phosphoramidite have been used for the preparation of supramolecular ligands. A structural analysis of the complexes using NMR spectroscopy and DFT calculations revealed the formation of strong hydrogen bonding between the two ligands. The complexes have been evaluated in the hydrogenation of several functionalized alkenes, leading to very high enantioselectivity for the substrates bearing a hydroxyl group. Also, kinetic studies showed that enhanced reaction rates of hydrogenation are observed in comparison with the supramolecular catalytic systems based on urea groups. In-depth NMR spectroscopy experiments and computational studies have highlighted the crucial role of the hydrogen bond between the phosphine oxide ligands and the substrate during the hydrogenation reaction.

引用

页码：3961 / 3969

页数：9

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