Abstract Cycloaddition of organic mono-and diazides to the triple bond of propargyl esters of mono-and dicarboxylic acids gave rise to polycyclic 1, 2, 3-triazole-substituted carboxylates. Dipropargyl dicarboxylates with diazides afforded oligomeric products with alternating triazole and carboxylate fragments. Reaction of a dipropargyl ester with 5- azidomethyltetrazole furnished a tetracyclic system with alternating triazole and tetrazole ...