[(NHC)CoR2]: pre-catalysts for homogeneous olefin and alkyne hydrogenation

• DOI: 10.1039/c8cc08891h
• Publication Date: 2018-11-26T10:14:00Z
• Authors: Andreea Enachi; Dirk Baabe; Marc-Kevin Zaretzke; Peter Schweyen; Matthias Freytag; Jan Raeder; Marc D. Walter
• Keywords: Alkyne; Homogeneous Catalysis

A novel synthesis for dialkyl cobalt compounds [(tmeda)CoR2] is presented. In these complexes tmeda readily replaced by an NHC or a bidentate phosphine ligand to form 3- and 4-coordinate compounds, respectively. [(ItBu)Co(CH2SiMe3)2] (ItBu = 1,3-di-tert-butylimidazolin-2-ylidene) serves as efficient, homogeneous olefin hydrogenation pre-catalyst allows the preparation of bis(alkyne) complex [(ItBu)Co(η2-PhCCPh)2].