Conformational Analysis and Binding Properties of a Cavity Containing Porphyrin Catalyst Provided with Urea Functions
作者:Pilar Hidalgo Ramos、Pattama Saisaha、Johannes A. A. W. Elemans、Alan E. Rowan、Roeland J. M. Nolte
DOI:10.1002/ejoc.201600627
日期:2016.9
Urea-functionalized porphyrin catalysts containing a cavity, which are used for the processive epoxidation of polymers, are thoroughly characterized and their binding properties and other supramolecular features disclosed. Intramolecular coordination of the urea side chains to the metal center of the porphyrin moiety is unveiled through NMR, IR, UV, and fluorescence spectroscopy studies. This intramolecular
含有空腔的脲官能化卟啉催化剂,用于聚合物的持续环氧化,被彻底表征,并公开了它们的结合特性和其他超分子特征。通过核磁共振、红外、紫外和荧光光谱研究揭示了尿素侧链与卟啉部分金属中心的分子内配位。这种分子内配位对于以假轮烷方式促进催化作用是必不可少的,即通过防止使用过量庞大的轴向配体。目前的研究提供了有关如何以动态方式调节超分子系统催化活性的信息,这对于设计越来越有效的催化活性很有意义。