Phosphane-Based Cyclodextrins as Mass Transfer Agents and Ligands for Aqueous Organometallic Catalysis

Molecules

Sstien Tilloy¹  Cຜile Binkowski-Machut¹  Stéphane Menuel¹  Hervé Bricout¹ 

[1] Unité de Catalyse et de Chimie du Solide (UCCS), CNRS, UMR 8181, Univ. Artois, Rue Jean Souvraz, SP 18, F-62307 Lens, France;

关键词: cyclodextrin;    hydroformylation;    hydrogenation;    inclusion;    phosphanes;    self-inclusion;    water-soluble;   

DOI  :  10.3390/molecules171113062

来源: mdpi

【 摘 要 】

The replacement of hazardous solvents and the utilization of catalytic processes are two key points of the green chemistry movement, so aqueous organometallic catalytic processes are of great interest in this context. Nevertheless, these processes require not only the use of water-soluble ligands such as phosphanes to solubilise the transition metals in water, but also the use of mass transfer agents to increase the solubility of organic substrates in water. In this context, phosphanes based on a cyclodextrin skeleton are an interesting alternative since these compounds can simultaneously act as mass transfer agents and as coordinating species towards transition metals. For twenty years, various cyclodextrin-functionalized phosphanes have been described in the literature. Nevertheless, while their coordinating properties towards transition metals and their catalytic properties were fully detailed, their mass transfer agent properties were much less discussed. As these mass transfer agent properties are directly linked to the availability of the cyclodextrin cavity, the aim of this review is to demonstrate that the nature of the reaction solvent and the nature of the linker between cyclodextrin and phosphorous moieties can deeply influence the recognition properties. In addition, the impact on the catalytic activity will be also discussed.

【 授权许可】

CC BY   
© 2012 by the authors; licensee MDPI, Basel, Switzerland.