Synthesis and properties of novel ditopic polypyridine ligands bridged by one and two acetylenic bonds
作者:Vincent Grosshenny、Raymond Ziessel
DOI:10.1016/s0040-4039(00)74721-6
日期:1992.12
bipyridine or terpyridine subunits, in the presence of catalytic amounts of Pdo(PPh3)4 to yield, the new homo- and heteroditopic ethynyl bridge ligands 2a, 4a, 7a and 8. Self coupling of the ethynyl substituted bipyridine species in the presence of CuCl/TMEDA/O2, yield the symmetric diethynyl bridge ligands 2b, 4b and 7b.
乙炔基取代的联吡啶螯合物与溴或三氟甲磺酸酯官能化联吡啶或三联吡啶亚基在催化量的Pd o(PPh 3)4存在下反应,生成新的均位和异位乙炔基桥配体2a,4a,7a和8。在CuCl / TMEDA / O 2存在下乙炔基取代联吡啶的自偶联产生对称的二乙炔基桥配体2b,4b和7b。