1571074-67-3Relevant academic research and scientific papers
Metal-assisted conversion of an N-ylide mesomeric betaine into its carbenic tautomer: Generation of N-(fluoren-9-yl)imidazol-2-ylidene complexes
Benhamou, Laure,Bastin, Stephanie,Lugan, Noel,Lavigne, Guy,Cesar, Vincent
, p. 4474 - 4482 (2014/03/21)
Whereas the N-ylide mesomeric betaine 2, consisting of a fluorenyl anion directly attached to an imidazolium ring, is not in equilibrium with its putative free N-(fluoren-9-yl)imidazol-2-ylidene tautomer, its reaction with a metallic centre induces its interconversion to yield the corresponding monoligated N-heterocyclic carbene complex (Au(i) and Rh(i)). Deprotonation of 2 and coordination to the RhI(COD) fragment allows the isolation of complex 7 displaying a rarely observed four-membered NHC-containing metallacycle and an enforced η1-fluorenyl ligand. Upon reaction with CpFe(CO)2I precursor, insertion of a carbonyl ligand into the Fe-fluorenyl bond occurs and yields the acyl-Fe complex 8.
