Synthesis, Rhodium Complexes and Catalytic Applications of a New Water-Soluble Triphenylphosphane-Modified β-Cyclodextrin
作者:François-Xavier Legrand、Natacha Six、Christian Slomianny、Hervé Bricout、Sébastien Tilloy、Eric Monflier
DOI:10.1002/adsc.201000917
日期:2011.5
of inclusion complexes. Associated to a rhodium precursor, PM‐β‐CD‐OTPP is able to generate soluble rhodium species in water. In addition, NMR experiments showed that the cyclodextrin cavity remains accessible for a guest even when PM‐β‐CD‐OTPP is coordinated to rhodium. Finally, this ligand was efficient for rhodium‐catalyzed hydrogenation and hydroformylation performed in aqueous medium.
合成了一种基于β-环糊精骨架的新三苯基膦(PM-β-CD-OTPP)。可以通过使用纳米沉淀法将该配体分散在水中。透射电子显微镜和NMR光谱表明PM-β-CD-OTPP聚集在水中并形成稳定的分散体。在存在选定的水溶性客体的情况下,通过形成包合物可以显着提高其水溶性。与铑前体有关,PM-β-CD-OTPP能够在水中生成可溶性铑。此外,NMR实验表明,即使PM-β-CD-OTPP与铑配位,客人仍可进入环糊精腔。最后,该配体对于在水性介质中进行铑催化的加氢和加氢甲酰化反应非常有效。