Catalytic Desulfurization of Dibenzothiophene and 4,6-Dimethyldibenzothiophene with Nickel Compounds
作者:Jorge Torres-Nieto、Alma Arévalo、Ponciano García-Gutiérrez、Alberto Acosta-Ramírez、Juventino J. García
DOI:10.1021/om0494925
日期:2004.9.1
Catalytic amounts of the compounds [(dippe)NiH](2) (1), [(dcpe)NiH](2) (2), and [Ni(PEt3)(4)] (3) (1-0.1 mol %) with alkyl Grignard reagents promoted the desulfarization of dibenzothiophene, 4-methyldibenzothiophene, and 4,6-dimethyldibenzothiophene, to produce the corresponding biphenyls (90-100%) in toluene or mixtures of biphenyls and thiols favored in THF. Also, the thianickelacycle [(dippe)Ni(eta(2)-C,S-C12H8)] (4) was used as a catalyst precursor to test its participation as an active intermediary in the catalytic cycle.