Synthesis and characterization of copper complexes with tripodal ligands bearing amino acid groups. Issue 8 (8th March 2021)

• Record Type: Journal Article
• Authors: Gawlig, Christopher; Jung, Jannis; Mollenhauer, Doreen; Schindler, Siegfried
• Is Part Of: Zeitschrift für anorganische und allgemeine Chemie. Volume 647:Issue 8(2021)
• Page Start: 951
• Page End: 959
• Publication Date: 2021-03-08
• Subjects: tripodal ligands -- thioanisole oxidation -- amino acid derivatives -- copper complex; Chemistry, Inorganic -- Periodicals; Chemistry -- Periodicals; 540
• DOI: 10.1002/zaac.202000320
• Languages: English
• ISSNs: 0044-2313

Abstract

Abstract: The tripodal ligand (2‐aminoethyl) bis (2‐pyridylmethyl)amine (uns‐penp), known for its Cu/O2 intermediates, was modified at one side arm by a selection of amino acids. With L‐Tyrosine (Tyr), L‐Histidine (His) and L‐Lysine (Lys) it was possible to introduce chirality into the tripodal ligand system and to investigate the corresponding copper(I) complexes [Cu{L‐His(BPh3 )uns‐penp}], [Cu(L‐Lys)uns‐penp]OTf and [Cu(L‐Tyr)uns‐penp]OTf. [Cu{L‐His(BPh3 )uns‐penp}] could be structurally characterized and represents the first example of a copper(I) complex with a coordinated imidazole ring of the histidine ligand. Furthermore, these complexes demonstrated catalytic activity for the oxygenation of thioanisole with hydrogen peroxide as an oxidant. Abstract :