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Multicomponent Synthesis of Unsymmetrical Unsaturated N‐Heterocyclic Carbene Precursors and Their Related Transition‐Metal Complexes |
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| Authors: | Dr. Pierre Queval Dr. Claire Jahier Dr. Mathieu Rouen Isabelle Artur Dr. Jean‐Christophe Legeay Laura Falivene Loic Toupet Dr. Christophe Crévisy Prof. Luigi Cavallo Dr. Olivier Baslé Dr. Marc Mauduit |
| Affiliation: | 1. Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226, 11 Allée de Beaulieu, CS 50837, 35708 Rennes Cedex 7 (France);2. Dipartimento di chimica, Università di Salerno, Fisciano (Italia);3. Institut de Physique de Rennes, Université Rennes 1, CNRS, UMR 6251, Rennes Cedex (France);4. New address: KAUST Catalysis Center, King Abdullah University of Science and Technology, Thuval 23955‐6900 (Saudi Arabia) |
| Abstract: | A low‐cost, modular, and easily scalable multicomponent procedure affording access in good yields and excellent selectivity (up to 93 %) to a wide range of (a)chiral unsymmetrical 1‐aryl‐3‐cycloalkyl‐imidazolium salts is disclosed. Electronic and steric properties of the corresponding unsymmetrical unsaturated N‐heterocyclic carbene (U2‐NHC) ligands were evaluated and evidenced strong electron donor ability, high steric discrimination, and modular steric demand. |
| Keywords: | chirality ligand design multicomponent reactions N‐heterocyclic carbenes transition metals |