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Oxidant-induced intramolecular triazole formation
- Source :
- Dalton Transactions. 42:16066
- Publication Year :
- 2013
- Publisher :
- Royal Society of Chemistry (RSC), 2013.
-
Abstract
- C 3 -symmetric ligands carrying a rigid triaminoguanidinium backbone are important building blocks for the preparation of supramolecular coordination cages as tetrahedra or trigonal bipyramides. Coordination of Eu(III)- or Gd(III)-ions leads to 1,2,4-triazole formation, which has been reported only rarely. Using Pd(II)-complexes as a model system, this triazole formation could be analyzed in more detail. The preparation of Pd(II)-coordination compounds can be easily done under stoichiometric control. These complexes could be transformed into 1,2,4-triazoles using O2 or H2O2 as an oxidation reagent. The steric demand of the PR3-coligand seems to play a key role in the cyclisation reaction.
Details
- ISSN :
- 14779234 and 14779226
- Volume :
- 42
- Database :
- OpenAIRE
- Journal :
- Dalton Transactions
- Accession number :
- edsair.doi.dedup.....2b8b590f4e8b3f0f74dd8237449926f3