title: Investigation of the properties of 4,5-dialkylated N-heterocyclic carbenes.
abstract: The investigation of the electronic and steric properties of 4,5-disubstituted imidazolylidenes is reported, as well as their successful application as organocatalysts in the formation of gamma-butyrolactones by conjugate Umpolung.
authors.affiliation: Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse 40, 48149, Münster, Germany.
authors.forename: Slawomir
authors.initials: S
authors.lastname: Urban
authors.forename: Matyas
authors.initials: M
authors.lastname: Tursky
authors.forename: Roland
authors.initials: R
authors.lastname: Fröhlich
authors.forename: Frank
authors.initials: F
authors.lastname: Glorius
mesh_terms: D018360:Crystallography, X-Ray; D006571:Heterocyclic Compounds / Q000737:chemistry*; D007495:Iridium / Q000737:chemistry*; D008697:Methane / Q000031:analogs & derivatives* / Q000737:chemistry; D008958:Models, Molecular; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D006571:Heterocyclic Compounds; D009942:Organometallic Compounds; C030011:carbene; D007495:Iridium; D008697:Methane