Synthesis and stereochemistry of bis(cyclopalladium) complexes of 1,1′-bis[1-(arylimino)ethyl]ferrocenes
作者:Yang Tie Wu、Yuan Hong Liu、Yang Li、Zhu Qixiu
DOI:10.1016/0277-5387(96)00101-5
日期:1997.1
Abstract Double cyclopalladation of 1,1′-bis[(arylimino)ethyl]ferrocenes with Li 2 PdCl 4 followed by treatment with PPh 3 afforded meso and dl stereoisomers of bis(palladium) complexes and the individual stereoisomers were isolated successfully by column chromatography. The composition and the structure of the metallocycles were characterized by elemental analysis, IR and 1 H NMR spectroscopy. A mechanism
摘要用Li 2 PdCl 4对1,1'-双[(芳基)乙基]二茂铁进行双环钯反应,再用PPh 3处理得到双(钯)配合物的内消旋和dl立体异构体,并通过柱色谱法成功分离出各个立体异构体。通过元素分析,IR和1 H NMR光谱对金属环的组成和结构进行了表征。提出了在环钯反应中形成立体异构体的机理。