Synthesis of stable free radicals: A novel family of oligopyridine based nitronyl-nitroxide biradicals
作者:Gilles Ulrich、Raymond Ziessel、Dominique Luneau、Paul Rey
DOI:10.1016/0040-4039(94)88026-3
日期:1994.2
9-dicarboxyaldehyde-1,10-phenanthroline react with N,N′-dihydroxy-2,3-diamino-2,3-dimethylbutane to yield the bis-N,N′-dihydroxyimidazolidine. Mild oxidation afforded the corresponding nitronyl-nitroxide biradicals 1 to 7. These ligands are highly colored and form very stable transition metal complexes.
二甲酰基取代的吡啶(在2,5和2,6位),2,2'-联吡啶(在4,4',5,5'和6,6'位),3,6-di-( 6-羧基醛-2-吡啶基)-哒嗪和2,9-二羧基醛-1,10-菲咯啉与N,N'-二羟基-2,3-二氨基-2,3-二甲基丁烷反应生成双-N,N ′-二羟基咪唑烷。轻度氧化得到相应的亚硝酰基-硝基氧双自由基1至7。这些配体是高度着色的,并形成非常稳定的过渡金属络合物。