Artículos de revistas
Charge-tagged N-heterocyclic carbenes
Registro en:
Rsc Advances. Royal Soc Chemistry, v. 1, n. 1, n. 73, n. 78, 2011.
2046-2069
WOS:000295850800011
10.1039/c1ra00024a
Autor
Corilo, YE
Nachtigall, FM
Abdelnur, PV
Ebeling, G
Dupont, J
Eberlin, MN
Institución
Resumen
Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) The interception, formation and characterization of the first stable, long lived charge-tagged N-heterocyclic carbenes of the general type 4(x+) (x = 1-3) and analogues is reported. Via ESI(+)-MS of solutions of bromine salts of doubly, triply and quadruply charged imidazolium ion IL (3. Br-n, n = 2-4), the isolated 4(x+) as well as charged aggregates [3.Br(n-x)](x+) likely to be participating in the [3.Br(n-x)](x+) reversible arrow 4(x+) + HBr solution equilibrium could be transferred and characterized in the gas phase. Mimicking the solution equilibrium, the gaseous [3.Br(n-x)](x+) were found to dissociate nearly exclusively via HBr loss during thermal activation via collisions to form gaseous 4(x+), which were found to add to acrolein and acetone. 1 1 73 78 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) INCT-MCT FAPERGS Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)