| abstract |
Connections with the general. formula I. wherein n represents the numbers 0, 1 or 2, 1 2 R and R represent hydrogen atoms, lower alkyl groups, phenyl groups, benzyl groups or, when n represents the number 0, together a trimethylene or a tetramethylene group, R represents a saturated, unsaturated , linear or branched or cyclic, aliphatic hydrocarbon radical having up to 16 carbon atoms, or, when R 4 is a hydrogen atom, a cycloalkyl or an aryl or aralkyl group which is optionally substituted by one or more C or with one or more C 1 -C 6 alkoxy groups, R represents a hydrogen atom, a saturated, unsaturated, linear or branched or cyclic hydrocarbon radical having up to 16 C atoms, or R which optionally contains an additional nitrogen, oxygen, sulfur atom or a carbonyl group, and which is optionally substituted by one or more C 1 -C 6 alkyl-, C alkoxylated C 1 -C 6 acyl, hydroxy, carbamoyl, carbamoyl substituents t C 1 -C 6 alkyl-, carbamoyl- which is substituted by the carbamoyl nitrogen with one or two C or C 1 -C 6 alkylamino radical, X represents a hydrogen atom and / or a metal ion equivalent, Y represents a C as well as their salts with organic and / or inorganic bases, are valuable complexing agents, complexes and complex salts. |