Beyond C-H Activation with Uranium: A Cascade of Reactions Mediated by a Uranium Dialkyl Complex

摘要

The ring opening of aromatic N heterocycles has been restricted to a few examples involving transition metals, such as niobium, tantalum, titanium, scandium, yttrium, and rhenium; strong actinide-oxygen bonds could also drive the ring opening of pyridine TV-oxides. Our interest in the reactions of electrophilic alkyl complexes supported by a ferrocene (fc) diamide ligand with aromatic N heterocy-cles prompted us to investigate the reactivity of the uranium dibenzyl complex 1-(CH2Ph)2 ((NN~(fc))U(CH2Ph)2; NN~(fc) = 1,1'-fc(NSitBuMe2)2) with imidazoles.