Efficient route to hybrid polypyridine–carboxylate ligands for lanthanide complexation
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| Title: | Efficient route to hybrid polypyridine–carboxylate ligands for lanthanide complexation |
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| Authors: | Mameri, Samir1, Charbonnière, Loïc, Ziessel, Raymond ziessel@chimie.u-strasbg.fr |
| Source: | Tetrahedron Letters: International Organ for the Rapid Publication of Preliminary Communications in Organic Chemistry. Dec2007, Vol. 48 Issue 52, p9132-9136. 5p. |
| Subjects: | Organic compounds, Chemical reactions, Bipyridine, Metal complexes |
| Abstract: | Abstract: An efficient methodology for the preparation of aminobutyl-bromo-terpyridine is described using a preformed imine prepared from a gem-dibromomethyl terpyridine derivative and the primary amine and further reduced to the secondary amine. Alkylation with pyridine, bipyridine, or terpyridine residues in the presence of a mineral base provides highly functionalized asymmetrical and symmetrical N-heterocyclic ligands. All bromo-containing products were subjected to a carboalkoxylation/hydrolysis sequence of reactions, providing the desired carboxylic acids. Stable Eu complexes were prepared under neutral aqueous conditions and some of them display interesting spectroscopic properties. [Copyright &y& Elsevier] |
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| Database: | Engineering Source |
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