Journal of Sulfur Chemistry p. 89 - 95 (2010)
Update date:2022-08-11
Topics:
Rayati, Saeed
Zakavi, Saeed
Noroozi, Vahid
Highly efficient and rapid oxidation of different sulfides to the corresponding sulfones with tetra-n- butylammonium hydrogen monopersulfate (TBAO) in the presence of catalytic amounts of Mn(TPPBr2)OAc at room temperature is reported. Contrary to other nitrogen donors, using 4-cyanopyridine as co-catalyst leads to an increase in the ratio of sulfoxide to sulfone in the products. Comparison of the chemoselectivity of reaction in the presence of different nitrogen donors as co-catalyst shows the involvement of a high-valent Mn-oxo species as well as the six-coordinate Mn(TPPBr2)(HSO5)(B) (B = nitrogen donors) complex in sulfide oxidation reactions with TBAO.
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