Oxidative access via aqua regia to an electrophilic, mesoionic dicobaltoceniumyltriazolylidene gold(III) catalyst

Stefan Vanicek; Julia Beerhues; Tobias Bens; Volodymyr Levchenko; Klaus Wurst; Benno Bildstein; Mats Tilset; Biprajit Sarkar

doi:10.1021/acs.organomet.9b00616

Oxidative access via aqua regia to an electrophilic, mesoionic dicobaltoceniumyltriazolylidene gold(III) catalyst

Organometallics. 2019 Nov 25;38(22):4383-4386. doi: 10.1021/acs.organomet.9b00616. Epub 2019 Nov 12.

Authors

Stefan Vanicek¹, Julia Beerhues², Tobias Bens², Volodymyr Levchenko¹, Klaus Wurst³, Benno Bildstein³, Mats Tilset¹, Biprajit Sarkar²

Affiliations

¹ Department of Chemistry, University of Oslo, Sem Sælands vei 26, 0315, Norway.
² Institut für Chemie und Biochemie, Anorganische Chemie, Freie Universität Berlin, Fabeckstraße 34-36, 14195 Berlin, Germany.
³ Institute of General, Inorganic and Theoretical Chemistry, Center for Chemistry and Biomedicine, University of Innsbruck, Innrain 80-82, 6020 Innsbruck, Austria.

Abstract

A gold(III) complex with the hitherto most electron poor mesoionic carbene ligand is presented. Aqua regia was the oxidizing agent of choice for the synthesis of this unusual organometallic compound. The Au^III complex is redox-rich, and also acts as a catalyst for oxazole formation, delivering selectively a completely different isomer compared to its Au^I congener.

Abstract

Grants and funding