Annulated N-Heterocyclic Carbene Ligands Derived from 2-Methylaminopiperidine: Their Complexes and Catalytic Applications
Articles > Article · 2008
Authors: Hayati TÜRKMEN, Tania PAPE, F. Ekkehardt HAHN, BEKİR ÇETİNKAYA
Organometallics, Journal Indexed in SCI Expanded, International, WoS, 2008, vol 27, pp 571-575
DOI: 10.1021/om701105y
Summary
A new type of carbene precursor, 1,5,6,7,8,8a-hexahydroimidazo[1,5- a ]pyridine ( 1 ), has been prepared from 2-(aminomethyl)piperidine and N,N -dimethylformamide dimethylacetal. The reactions of three imidazolidinium salts with [Rh(acac)(COD)] and [Ir(μ-OMe)(COD)] 2 were found to afford rhodium and iridium complexes of N-heterocyclic carbenes, respectively. These complexes have been tested as catalysts in the transfer hydrogenation of cyclohexanone and acetophenone using 2-propanol as hydrogen source.