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US 4,543,213 AGranted
Process for preparing 2,3-dihydroxybenzoic acid amides of tetraazaalkanes and cycloalkanes
AssigneeThe United States of America as represented by the United States Department of Energy
InventorsFrederick L. Weitl, Kenneth N. Raymond
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Abstract
A compound of the formula: ##STR1## wherein X is hydrogen or a conventional electron-withdrawing group, particularly --SO.sub.3 H or a salt thereof; n is 2, 3, or 4; m is 2, 3, or 4; and p is 2 or 3. The present compounds are useful as specific sequestering agents for actinide (IV) ions. Also described is a method for the 2,3-dihydroxybenzamidation of azaalkanes.
Claims4
A method for the 2,3-dihydroxybenzamidation of a tetraazaalkane which comprises:
- reacting a tetraazaalkane of the formula:
- ##STR5## where:
- n is 2, 3 or 4, m is 2, 3 or 4, and p is 2 or 3, or of the formula:
- ##STR6## where n is 2, 3 or 4 and m is 2, 3 or 4, with a 2,3-dioxomethylenebenzoyl chloride or 2,3-dimethoxybenzoyl chloride of the formula:
- ##STR7## wherein X is hydrogen, --SO.sub.3 H or a salt thereof, or --NO.sub.2, in the presence of at least one reaction moderator to form the corresponding amide of said tetraazaalkane and which amide has the formula:
- ##STR8## where n, m, p and X are defined above;
- reacting said amide of tetraazaalkane with boron tribromide or boron trichloride to form the corresponding catechol substituted amide of tetraazaalkane.
4 more elements
Dependencies are inferred from the claim text.