INVESTIGADORES
SILBESTRI Gustavo Fabian
artículos
Título:
Solvent-Reversible Addition of Alkyne C?H Bonds to Water-Soluble NHC Platinum(0) Complexes
Autor/es:
E. BAQUERO; G.F. SILBESTRI; J.C. FLORES; E. DE JESÚS
Revista:
ORGANOMETALLICS
Editorial:
AMER CHEMICAL SOC
Referencias:
Año: 2017 vol. 36 p. 2271 - 2274
ISSN:
0276-7333
Resumen:
Oxidative addition of CH3I and alkynes to the platinum(0) complex 1 [Pt(AE)NHC], in which the NHC ligand is a sul-fonated version of the IPr ligand [1,3-bis(2,6-diisopropylphenyl)imidazol-2-ylidene] and AE is diallyl ether, is reported. Reaction with the haloalkane affords the iodomethyl complex 2 [PtI(Me)NHC], whereas the addition of alkynes via C(sp)?H bond activation leads to the corresponding new water-soluble hydride (NHC)Pt(II) complexes 3 and 4. Com-plexes 3 and 4 were found to be moderately stable in water, displaying an interesting behavior in this solvent. Thus, in the presence of the corresponding olefin, the reaction can be reversible under mild conditions, thus allowing the for-mation of diolefinic (NHC)Pt(0) complexes 1, 5 or 6, with elimination of the alkyne.
