Carbaporphyrinoids Containing a Pyridine Moiety: 3-Aza-meta-benziporphyrin and 24-Thia-3-aza-meta-benziporphyrin
作者:Radomir Myśliborski、Lechosław Latos-Grażyński
DOI:10.1002/ejoc.200500496
日期:2005.12
20-tetraarylporphyrin with one of the pyrrole units replaced by a pyridine ring pointing outwards, linked at β,β′ positions, was formed by condensation of 3,5-bis[phenyl(2-pyrrolyl)methyl]pyridine, pyrrole and p-tolualdehyde catalyzed by TFA. The [3+1] approach, which involved a condensation of 3,5-bis[phenyl(2-pyrrolyl)methyl]pyridine with 2,5-bis[hydroxy(p-tolyl)methyl]thiophene was applied to afford
6,11,16,21-Tetraaryl-3-aza-m-benziporphyrin,一种 5,10,15,20-四芳基卟啉的类似物,其中一个吡咯单元被一个指向外的吡啶环取代,在 β,β' 处连接3,5-双[苯基(2-吡咯基)甲基]吡啶、吡咯和对甲苯醛在TFA催化下缩合形成。[3+1] 方法包括 3,5-双[苯基(2-吡咯基)甲基]吡啶与 2,5-双[羟基(对甲苯基)甲基]噻吩的缩合反应,得到 6, 11,16,21-tetraaryl-24-thia-3-aza-m-benziporphyrin。在与吡啶环相邻的内消旋芳基化合物的邻位引入庞大的取代基导致缩合产率的增加。3-Aza-m-benziporphyrins 和 24-thia-3-aza-m-benziporphyrins 具有非芳香族分子的 1H NMR 光谱特征。6,21-二苯基-11的晶体结构,16-di-p-tolyl