title: Tripodal S-Ligand Complexes of Copper(I) as Catalysts for Alkene Aziridination, Sulfide Sulfimidation, and C-H Amination.
abstract: Copper(I) complexes of tris(thioimidazolyl)borates (R'TmR), including [Cu(TmPh)(PR″3)] (R″ = Ph, Cu1; Cy, Cu2) and [Cu(R'TmPh)(PR″3)]+(R' = N-methylimidazole; R″ = Ph, Cy) were prepared and characterized by spectroscopic methods. The X-ray crystal structures of Cu1 and Cu2 feature a tripodal TmPhligand coordinated in κ3-S,S,S mode. Using Cu2 as a catalyst (loading: 1 mol %), the aziridination of styrenes and sulfimidation of thioanisoles with PhI═NTs at RT for 3 and 0.5 h, respectively, both resulted in product yields of up to 99%. Cu2 also catalyzed intramolecular amination of the aryl C-H bond of vinyl azides with up to 98% yield. DFT calculations were performed to gain insight into the mechanism of the Cu2-catalyzed aziridination reaction.
authors.affiliation: Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China.
authors.forename: Tsz Lung
authors.initials: TL
authors.lastname: Lam
authors.affiliation: Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China.
authors.forename: Ken Chi-Hang
authors.initials: KC
authors.lastname: Tso
authors.affiliation: Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China.
authors.forename: Bei
authors.initials: B
authors.lastname: Cao
authors.affiliation: Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China.
authors.forename: Chen
authors.initials: C
authors.lastname: Yang
authors.affiliation: Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China.
authors.forename: Daqing
authors.initials: D
authors.lastname: Chen
authors.affiliation: Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China.
authors.forename: Xiao-Yong
authors.initials: XY
authors.lastname: Chang
authors.affiliation: Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China.
authors.forename: Jie-Sheng
authors.identifier: http://orcid.org/0000-0003-1724-4362
authors.initials: JS
authors.lastname: Huang
authors.affiliation: Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The University of Hong Kong , Pokfulam Road, Hong Kong, People's Republic of China.|HKU Shenzhen Institute of Research and Innovation , Shenzhen 518053, People's Republic of China.
authors.forename: Chi-Ming
authors.initials: CM
authors.lastname: Che