Guanidinium Nitrate/Silica Sulfuric Acid/Ammonium Bromide as an Effective, Viable and Metal-free Catalytic Media for the Selective Oxidation of Sulfides to the Sulfoxides

摘要

In the last few years, heterogeneous systems has become increasingly used in organic synthesis, mainly because the reactions are carried out under mild conditions and the organic products are easily isolated from the reaction media. In addition, the stability and cheapness, high yields of the products, short reaction times, and reusability is other important advantages of these systems.