Burling, Suzanne Mahon, Mary F. Powell, Rachael E. Whittlesey, Michael K. M. J. Williams, Jonathan Ruthenium Induced C−N Bond Activation of an N-Heterocyclic Carbene:  Isolation of C- and N-Bound Tautomers C−N bond activation of the N-heterocyclic carbene 1,3-diisopropyl-4,5-dimethylimidazol-2-ylidene occurs with Ru(PPh<sub>3</sub>)<sub>3</sub>(CO)HCl to give the C-2 bound 1-isopropyl-4,5-dimethylimidazol-2-ylidene complex Ru(C−I<i><sup>i</sup></i><sup></sup>PrHMe<sub>2</sub>)(PPh<sub>3</sub>)<sub>2</sub>(CO)HCl via loss of propene. In the presence of free carbene, this undergoes tautomerism to the corresponding imidazole compound Ru(N−I<i><sup>i</sup></i><sup></sup>PrHMe<sub>2</sub>)(PPh<sub>3</sub>)<sub>2</sub>(CO)HCl. Ru;presence;TautomersC;tautomerism;Induced;isopropyl;Ruthenium;Activation;Carbene;imidazole;diisopropyl;Isolation;activation;carbene;compound;Bond;propene;bond 2006-10-25
    https://acs.figshare.com/articles/journal_contribution/Ruthenium_Induced_C_N_Bond_Activation_of_an_N_Heterocyclic_Carbene_Isolation_of_C_and_N_Bound_Tautomers/3052201
10.1021/ja065582k.s001