In recent years, mesoporous materials such as MCM41 have attracted the attention of many scientists [1]. They enable to carrying high dosages of a variety of drugs in their mesopores. Furthermore mesoporous silica containing specific functional groups have highspecific surface areas and porosities that opened a wide field of applications. Thus they provide a suitable approach to the development of green chemistry principles Sulfoxides are fine chemicals, pharmaceuticals and valuable intermediates in the synthesis of chemically useful and biologically active molecules [2]. Oxidation of sulfides is the most straightforward method for the synthesis of sulfoxides. Concerning the green oxidant, hydrogen peroxide is one of the most powerful candidates besides molecular oxygen, because it is inexpensive, readily available, high atom efficiency, and water is expected as the only byproduct to be generated from the reaction [3]. Herein we wish to report oxidation of sulfides to sufoxides using hydrogen peroxide in the presence of catalytic amount of functionalizedMCM41 under solventfree conditions at 35 oC.
