6,6′-Dimethyl-2,2′-bipyridine-4-ester: A pivotal synthon for building tethered bipyridine ligands
作者:Fabien Havas、Nadine Leygue、Mathieu Danel、Béatrice Mestre、Chantal Galaup、Claude Picard
DOI:10.1016/j.tet.2009.06.111
日期:2009.9
describe an efficient and scalable synthesis of 4-carbomethoxy-6,6′-dimethyl-2,2′-bipyridine starting from easily available substituted 2-halopyridines and based on the application of modified Negishi cross-coupling conditions. This compound is a versatile starting material for the synthesis of 4-functionalized 2,2′-bipyridines bearing halide, alcohol, amine, and other functionalities, suitable for conjugation
我们描述了从容易获得的取代的2-卤代吡啶开始,并基于改良的Negishi交叉偶联条件的应用,有效而可扩展地合成4-羰基甲氧基-6,6'-二甲基-2,2'-联吡啶。该化合物是通用的原料,可合成带有卤化物,醇,胺和其他官能团的4-官能化2,2'-联吡啶,适合与生物材料(2a - c,3a - g)结合。通过合成两种双功能镧系螯合剂进一步证明了该化合物在构建更复杂结构中的效用。基于一个2,2'-联吡啶单元的开链配体和基于三个2,2'-联吡啶单元的穴状配体[N 2(bpy)3 COOMe]。在发光生物标记的领域,报道了相应的Eu(III)隐窝的光物理性质。