Kaloglu, Nazan2024-08-042024-08-0420190040-4020https://doi.org/10.1016/j.tet.2018.12.049https://hdl.handle.net/11616/98712Herein, a series of new ruthenium(II) complexes with the general molecular formula [RuCl2(arene)(NHC)], (arene = eta(6)-p-cymene, NHC = N-heterocyclic carbene) were synthesized from in situ prepared silver(I)-NHCs by the transmetallation method. These complexes were fully characterized by analytical and spectral methods. Ruthenium(11) complexes were tested as promising catalyst for selective B-C(sp(3))-H functionalization of N-methylpiperidine with various aldehydes through hydrogen transfers in presence of external acidic additive. These eco-friendly cross-dehydrogenative couplings enable the production of C(3)-alkylated N-methylpiperidine derivatives without enamines with only carbon dioxide and water as benign by-product. (C) 2019 Elsevier Ltd. All rights reserved.eninfo:eu-repo/semantics/closedAccessN-Heterocyclic carbeneRutheniumCyclic amineCatalysisbeta-alkylationArticle75152265227210.1016/j.tet.2018.12.0492-s2.0-85062606523Q2WOS:000463288100003Q2