Routes to Metallodendrimers: Synthesis of Isomeric Neutral Metallomacromolecules Based on Bis(2,2′:6′,2″-terpyridine)ruthenium(II) Connectivity
作者:George R. Newkome、Kyung Soo Yoo、Hyung Jin Kim、Charles N. Moorefield
DOI:10.1002/chem.200304998
日期:2003.7.21
Routes for the syntheses of isomeric, zwitterionic, bisterpyridine-Ru(II)-based macromolecules are described. Access to these novel architectures is facilitated by the construction of terpyridine-modified, 1-->3 C-branched, ester-terminated building blocks. Constitutional isomers result from the interchangable placement of methyl and tert-butyl ester groups on both the branched framework near the Ru(II)
描述了基于异构的,两性离子的,基于双吡啶-Ru(II)的大分子的合成途径。通过构建经吡啶吡啶修饰的,1-> 3 C支链,酯封端的结构单元,可以方便地访问这些新颖的体系结构。构成异构体的原因是,甲基和叔丁基酯基团在Ru(II)中心附近和支链结构末端附近的支链骨架上可互换放置。通过叔丁酯选择性转化为其相应的羧酸盐,可赋予每种异构体水溶性。除标准的表征技术外,电化学和光谱数据也支持结构形成。