STUDIES ON URANIUM MOBILIZATION AGENTS.VIII:NEW METHOD SYNTHSIS OF CHELATING AGENTS WITH CATECHOL RESIDUE

In further study on the synthesis of chelating agents with catechol residue,twoconvenient procedures-ethyl chloroformate method and dicyclohexylcarbodiimide(DCC)method-weredeveloped.The latter was used successfully to synthesize chelating agents with several catechol units.These compounds are more effective than compounds with only one catechol unit to detoxicate micewhich were under acute UO₂(NO₃)₂ intoxication(LD_95～100).