N-heterocyclic carbenes as highly efficient catalysts for the cyclotrimerization of isocyanates |
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| Authors: | Duong Hung A Cross Michael J Louie Janis |
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| Institution: | Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, USA. |
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| 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. |
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