@misc{10498/20431,
year = {2013},
month = {5},
url = {http://hdl.handle.net/10498/20431},
abstract = {When studying the activation of 3-arylpropiolates by [TpRu(picolyl-RI)Cl]/NaBArF 4 (picolyl-MeI = 3-methyl-1-(2- picolyl)imidazol-2-ylidene (1); picolyl-MeBI = 3-methyl-1-(2- picolyl)benzoimidazol-2-ylidene (2)) a migratory insertion of the NHC into a ruthenium−carbon bond and an unprecedented C−N bond activation of the chelating picolyl-NHC ligand take place to give the new ruthenium metallacycles [TpRu(κ3-C,N,N′- =C(Ph) =
C(CH2Py)(CO2Me)(MeI)][BArF 4] 3a and 4a and [TpRu(κ3-C,N,N′-=C(4-CF3Ph) =
 C(CH2Py)(CO2Me)(MeI)]- [BArF 4] 3b and 4b. X-ray crystal structures of 3a and 3b are reported, and a mechanistic pathway is proposed. In contrast, activation of internal alkynones by a mixture of [TpRu(picolyl-MeI)Cl] complex (1) and NaBArF 4 led to isolation and characterization of the corresponding disubstituted vinylidene complexes. Also, structures of [TpRu(picolyl-MeI)(= CC(COR)(Ph)][BArF 4] (R = Me (6a); Ph (6b)) are reported.},
publisher = {ACS Publications},
title = {Functionalized N‑Heterocyclic Carbene Nonspectator Ligands upon Internal Alkyne Activation Reactions},
doi = {10.1021/ic400433z},
author = {Valerga, Pedro and Puerta Vizcaino, María del Carmen and Valerga Jiménez, Pedro Sixto},
}