A novel catalytic system poly(1-vinyl-3-dodecylimidazolium tribromide)/TBN for the oxidation of sulfides to sulfoxides with air as oxidant
作者:Hua Zhang、Linlin Qi
DOI:10.1016/j.tetlet.2018.07.001
日期:2018.8
novel and recoverable polymeric ionic liquid, poly(1-vinyl-3-dodecylimidazolium tribromide) (Poly[VDIM]Br3), was successfully prepared and fully characterized. And a highly efficient metal-free catalytic system Poly[VDIM]Br3/tert-butyl nitrite was developed for the oxidation of sulfides. With air as oxidant, we have successfully achieved 19 kinds of sulfides selectively and efficiently oxidized to corresponding
Nickel-catalyzed Negishi-type cross-coupling of aryl methyl sulfoxides with arylzinc reagents has been developed. By consuming the catalyst-oxidizing methanesulfenate anion through oxidative homocoupling of the arylzinc reagent, smooth catalyst turnover could be executed. Arylzinc reagents prepared from arylmagnesium bromide, zinc bromide, and lithium bromide were optimal to afford the products in