Fricke, Tom and Chrapava, Sarka and Koenig, Burkhard (2002) Synthesis of 1,4,7,10-tetra-N-alkyl-1,4,7,10-tetraaza-cyclododecanes. SYNTHETIC COMMUNICATIONS, 32 (23). pp. 3595-3602. ISSN 0039-7911
Full text not available from this repository. (Request a copy)Abstract
We report a concise method for the preparation of 1,4,7,10-tetra-N-alkyl-1,4,7,10-tetraaza-cyclododecanes via deprotonation to the fourfold lithium amide followed by alkylation with alkyl bromides. The procedure circumvents the problem of ammonium salt formation and provides direct access to hydrophobic 1,4,7,10-tetraaza-cyclododecanes in moderate yield. The so obtained hydrophobic macrocycles were converted into the corresponding zinc(II), copper(II), nickel(II) and cobalt(II) complexes, that may be used as water stable Lewis-acids in catalysis and anion extraction.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | SELECTIVE RECOGNITION; AQUEOUS-SOLUTION; COPPER(II) COMPLEXES; MACROCYCLIC LIGAND; METAL-COMPLEXES; ANION-BINDING; ZINC(II); 1,4,7,10-TETRAAZACYCLODODECANE; LUMINESCENCE; NUCLEOSIDES; |
| Subjects: | 500 Science > 540 Chemistry & allied sciences |
| Divisions: | Chemistry and Pharmacy > Institut für Organische Chemie > Lehrstuhl Prof. Dr. Burkhard König |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 22 Nov 2021 08:01 |
| Last Modified: | 22 Nov 2021 08:01 |
| URI: | https://pred.uni-regensburg.de/id/eprint/40845 |
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