Journal
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
Volume -, Issue 17, Pages 2258-2266Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201900242
Keywords
Tyrosinase; Enzyme models; Coordination modes; Pyrazole ligands; Homogeneous catalysis; N-donor ligands
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Funding
- CAU Kiel
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Several copper(I) and copper(II) complexes supported by hemilabile bis(pyrazolylmethyl)amine (pzma) ligands are synthesized and structurally characterized. The copper(I) complexes with hexafluoridophosphate or perchlorate anions are employed as catalysts for the tyrosinase-like oxygenation of 2,4-di-tert-butylphenol (DTBP-H). Their activities are comparable to that of [Cu(MeCN)(2)PMP]PF6 (PMP= pyrazolylmethylpyridine) investigated earlier. In contrast to the copper(I) pzma complexes, their congeners supported by non-hemilabile bis(pyrazolylethyl)amine (pzea) ligands are found to be catalytically inactive.
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