connected to the carboxyl groups, were synthesized in moderate to good yields from bis(N-acylbenzotriazoles) 6 and amidines 2. In contrast, the corresponding bis(carboxylic acid) chlorides were not well suited for the synthesis of the compounds 7. 2-Aminothiazole gave the bis-amide 8, where the amidine moieties are part of heterocyclic ring systems. Furthermore, the reaction of a bis-amidine 9 with two equivalents