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Specific sequestering agents for the actinides. III. Polycatecholate ligands derived from 2,3-dihydroxy-5-sulfobenzoyl conjugates of diaza- and tetraazaalkanes

Journal Article · · J. Am. Chem. Soc.; (United States)
DOI:https://doi.org/10.1021/ja00527a026· OSTI ID:5279357
As part of a program to develop specific sequestering agents for the actinides, we have reported the synthesis of N,N',N'',N'''-tetra(2,3-dihydroxybenzoyl)tetraazacycloalkanes. These tetra(DHB) amodes are potentially octadentate ligands via coordination of the catechol oxygen atoms. We now report the synthesis of the DHB amides of linear tetraaza- and diazaalkanes. Furthermore, sulfonation of these compounds in 20 to 30% SO/sub 3/-H/sub 2/SO/sub 4/ yields exclusively their tetra(5-sulfo-DHB) analogues. The sulfonated derivatives have several properties which make them superior to their precursors with respect to actinide coordination; these properties include increased water solubility, enhanced phenolic acidity, and improved oxidative stability near neutral pH. In vivo tests with mice have shown that tetrameric (5-sulfo-DHB) compounds are generally acutely nontoxic, efficient sequestering agents for the actinides which promote rapid urinary excretion of /sup 238/Pu. The tetra(5-sulfo-DHB) derivative of spermine is more effective than any other plutonium sequestering agent yet tested. 4 figures, 1 table.
Research Organization:
Univ. of California, Berkeley
DOE Contract Number:
W-7405-ENG-48
OSTI ID:
5279357
Journal Information:
J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 102:7; ISSN JACSA
Country of Publication:
United States
Language:
English