Pd complexes with trans-chelating ligands composed of two pyridyl groups and rigid π-conjugated backbone
作者:Miso Jung、Yuji Suzaki、Takashi Saito、Kyoichi Shimada、Kohtaro Osakada
DOI:10.1016/j.poly.2012.04.006
日期:2012.6
dichloropalladium complex with the trans-chelating ligand, containing two methoxy groups in the central arylene group, promotes coupling of phenyl lithium and of phenyl acetylene to yield the respective homo-coupling products. The ligand displacement reactions of bis(2-pyridylethynyl)benzene}palladium(II) complex with phosphine and dinitrogen ligands, such as PPh3, dppe, dppb, en, tmeda, bpy and phen, takes place
摘要由1,2-二碘苯与2-炔基吡啶的1:2 Sonogashira反应制备了具有两个吡啶基和π共轭骨架的1,2-双(2-吡啶基乙炔基)苯衍生物。所获得的配体与钯(II)配合物如[PdCl 2(cod)]和[PdCl 2(MeCN)2]反应,形成具有以反螯合双齿模式配位的配体的配合物。由1,3-二碘苯和2-炔基吡啶获得的配体桥接两个Pd(II)中心,生成二铝配合物。具有反式螯合配体的二氯钯配合物在中心亚芳基中含有两个甲氧基,可促进苯基锂和苯基乙炔的偶联,从而产生各自的均偶联产物。