The synthesis of a new rigid analogue of cyclohexyl-TTHA, an efficient lanthanide ligand, as well, as the first complexation trials are reported. This polyaminopolycarboxylic acid, Ph-DTHA 1, was obtained in five steps from phenylenediamine as starting product. The key intermediate was phenylenediethylenetetraamine 4, which after alkylation and hydrolysis gave the expected compound 1 with ten coordination centers.
本研究报告介绍了高效
镧系
配体环己基-
TTHA 的一种新的刚性类似物的合成以及首次络合试验。这种多
氨基多
羧酸 Ph-DTHA 1 是以
苯二胺为起始产物,通过五个步骤获得的。关键的中间体是苯二
乙烯四胺 4,经过烷基化和
水解后得到了具有十个配位中心的预期化合物 1。