[see structure]. A versatile bis-faced porphyrin synthon, 5,10,15,20-tetrakis(4-tert-butyl-2,6-dicarboxyphenyl)porphyrin, was synthesized. The eight carboxyl groups were readily converted into various amide groups, and condensation with chiral amines led to various D4-symmetric chiral porphyrins with rigid structures.
[请参阅结构]。合成了一种通用的双面
卟啉合成子5,10,15,20-四(4-叔丁基-2,6-二羧苯基)
卟啉。八个羧基易于转化为各种酰胺基,与手性胺缩合可生成各种具有刚性结构的
D4对称手性
卟啉。