title: A mesoionic bis(Py-tzNHC) palladium(II) complex catalyses "green" Sonogashira reaction through an unprecedented mechanism.
abstract: A novel bis(pyridyl-functionalized 1,2,3-triazol-5-ylidene)-palladium(II) complex [Pd(Py-tzNHC)2](2+) catalyses the copper-, amine-, phosphine-, and additive-free aerobic Sonogashira alkynylation of (hetero)aryl bromides in water as the only reaction solvent. The catalysis proceeds along two connected Pd-cycles with homogeneous bis-carbene Pd(0) and Pd(II) species, as demonstrated by electrospray ionization mass spectrometry.
authors.affiliation: Faculty of Chemistry and Chemical Technology, University of Ljubljana, Večna pot 113, SI-1000 Ljubljana, Slovenia. janez.kosmrlj@fkkt.uni-lj.si.
authors.forename: Martin
authors.initials: M
authors.lastname: Gazvoda
authors.forename: Miha
authors.initials: M
authors.lastname: Virant
authors.forename: Andrej
authors.initials: A
authors.lastname: Pevec
authors.forename: Damijana
authors.initials: D
authors.lastname: Urankar
authors.forename: Aljoša
authors.initials: A
authors.lastname: Bolje
authors.forename: Marijan
authors.initials: M
authors.lastname: Kočevar
authors.forename: Janez
authors.initials: J
authors.lastname: Košmrlj