title: Synthesis and Catalytic Reactivity of a Dicopper(II) μ-η(2):η(2)-Peroxo Species Supported by 1,4,7-Tri-tert-butyl-1,4,7-triazacyclononane.
abstract: O2-derived Cu(n)O2 adducts are attractive targets for aerobic oxidation catalysis because of their remarkable reactivity, but oxidation of the supporting ligand limits catalytic turnover. We report that (t)Bu3tacn (1,4,7-tri-tert-butyl-1,4,7-triazacyclononane) supports a dicopper(II) μ-η(2):η(2)-peroxo species with the highest solution stability outside of an enzyme. Decomposition of this species proceeds without oxidation of the (t)Bu3tacn ligand. Additive-free catalytic aerobic oxidation reactions at or above room temperature are described, highlighting the potential of oxidatively robust ligands in aerobic copper catalysis.
authors.affiliation: Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States.
authors.forename: Gregory J
authors.initials: GJ
authors.lastname: Karahalis
authors.affiliation: Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States.
authors.forename: Arumugam
authors.initials: A
authors.lastname: Thangavel
authors.affiliation: Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States.
authors.forename: Bryant
authors.initials: B
authors.lastname: Chica
authors.affiliation: Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States.
authors.forename: John
authors.initials: J
authors.lastname: Bacsa
authors.affiliation: Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States.
authors.forename: R Brian
authors.initials: RB
authors.lastname: Dyer
authors.affiliation: Department of Chemistry, Emory University , Atlanta, Georgia 30322, United States.
authors.forename: Christopher C
authors.initials: CC
authors.lastname: Scarborough