title: N-heterocyclic carbenes as highly efficient catalysts for the cyclotrimerization of isocyanates.
abstract: [reaction: see text] A series of N-heterocyclic carbenes (NHCs) were evaluated as potential catalysts for the cyclotrimerization of isocyanates to afford isocyanurates. 1,3-Bis-(2,6-diisopropylphenyl)-4,5-dihydroimidazol-2-ylidene (SIPr) was found to be a highly efficient catalyst for the cyclotrimerization of a variety of isocyanates.
authors.affiliation: Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, USA.
authors.forename: Hung A
authors.initials: HA
authors.lastname: Duong
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Cross
authors.forename: Janis
authors.initials: J
authors.lastname: Louie