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Synthesis,Structure and Catalytic Activity of NHC–AgI Carboxylate Complexes |
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| Authors: | Dr. Valerie H. L. Wong Dr. Sai V. C. Vummaleti Prof. Luigi Cavallo Dr. Andrew J. P. White Prof. Steven P. Nolan Dr. King Kuok Hii |
| Affiliation: | 1. Department of Chemistry, Imperial College London, London, UK;2. Department of Chemistry, National University of Singapore, Kent Ridge Crescent, Singapore;3. KAUST Catalysis Centre, Physical Sciences and Engineering Division, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia;4. Chemistry Department, College of Science, King Saud University, Riyadh, Saudi Arabia;5. Department of Inorganic and Physical Chemistry, Universiteit Gent, Ghent, Belgium |
| Abstract: | A general synthetic route was used to prepare 15 new N‐heterocyclic carbene (NHC)–AgI complexes bearing anionic carboxylate ligands [Ag(NHC)(O2CR)], including a homologous series of complexes of sterically flexible ITent ligands, which permit a systematic spectroscopic and theoretical study of the structural and electronic features of these compounds. The complexes displayed a significant ligand‐accelerated effect in the intramolecular cyclisation of propargylic amides to oxazolidines. The substrate scope is highly complementary to that previously achieved by NHC–Au and pyridyl–AgI complexes. |
| Keywords: | carboxylate ligands catalysis ligand effects N-heterocyclic carbene silver |