Abstract
A mild, efficient, green, and selective oxidation method of sulfides to sulfoxides or sulfones using H2O2 in the presence of catalytic amounts of sulfamic acid has been developed. Various substituted sulfides having functional groups such as alcohol, ester, and aldehyde are successfully and selectively oxidized without affecting the sensitive functionalities in good to excellent yields at room temperature.
GRAPHICAL ABSTRACT
![](/cms/asset/39204e02-6466-43e0-a6fa-897d827baf88/lsyc_a_577924_o_uf0001.gif)
ACKNOWLEDGMENT
We are thankful to the Islamic Azad University–Sanandaj Branch for partial support of this work.
Notes
a Reaction conditions: sulfide (1 mmol), 30% H2O2 (1.2 equiv), sulfamic acid (5 mol %), rt.
b Reaction conditions: sulfide (1 mmol), 30% H2O2 (3.6 equiv), sulfamic acid (10 mol %), rt.
c The disulfoxide/disulfone was formed.
d Reaction conditions: sulfide (1 mmol), 30% H2O2 (3.6 equiv), sulfamic acid (40 mol %), 80 °C.