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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Szíjjártó, Csongor Pershagen, Elias Borbas, K. Eszter |
| Description | Author Affiliation: Szíjjártó C ( Department of Chemistry-BMC, Uppsala University, SE-75123, Uppsala, Sweden.) |
| Abstract | $Cu^{I}-catalysed$ azide–alkyne cycloaddition reactions were used to functionalise $lanthanide^{III}-complexes$ (Ln; La, Eu and Tb) incorporating alkyne or azide reactive groups. Microwave irradiation significantly accelerated the reactions, enabling full conversion to the triazole products in some cases in 5 min. Alkyl and aryl azides and alkyl and aryl alkynes could all serve as coupling partners. These reaction conditions proved efficient for cyclen-tricarboxylates and previously unreactive cyclen-tris-primary amide chelates. The synthesis of heterobimetallic (Eu/Tb, EuTb17 and Eu/La, EuLa17) and heterotrimetallic (Eu/La/Eu) complexes was achieved in up to 60% isolated yield starting from coumarin 2-appended alkynyl complexes Tb16 or La16 and an azido-Eu complex Eu4, and bis-alkynyl La-complex La5 and Eu4, respectively. EuTb17 displayed dual $Eu^{III}$ and $Tb^{III}-emission$ upon antenna-centred excitation. |
| ISSN | 14779226 |
| Issue Number | 25 |
| Volume Number | 41 |
| e-ISSN | 13645447 |
| Journal | Dalton Trans. |
| Language | English |
| Publisher | Royal Society of Chemistry |
| Publisher Date | 2012-07-07 |
| Publisher Place | Great Britain (UK) |
| Access Restriction | Subscribed |
| Subject Keyword | Alkynes Chemistry Azides Copper Lanthanoid Series Elements Microwaves Catalysis Cyclization Molecular Structure Journal Article Research Support, Non-U.S. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Inorganic Chemistry |
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