Selective and mild oxidation of sulfides to sulfoxides by oxodiperoxo molybdenum complexes adsorbed onto silica gel
作者:Fabiana Batigalhia、Marcelo Zaldini-Hernandes、Antônio G Ferreira、Ivani Malvestiti、Quezia B Cass
DOI:10.1016/s0040-4020(01)00969-3
日期:2001.11
Aliphatic and aromatic sulfides, ketosulfides, sulfinyl acids and esters, and olefinic sulfides were oxidized to sulfoxides using oxodiperoxo complexes of molybdenum coated on silica gel (150 Å pore size) in very high yields. Complete chemoselectivity was observed for the oxidation of all functional sulfides. Sulfones were, however, the main products of the reaction when the complexes were not coated
使用涂在硅胶上(孔径为150Å)的钼的氧代二氧杂配合物,脂肪族和芳香族硫化物,酮硫醚,亚磺酸基酸和酯以及烯属硫化物被氧化为亚砜。观察到所有功能性硫化物的氧化具有完全的化学选择性。然而,当配合物未涂覆在硅胶上时,砜是反应的主要产物。还研究了硅胶作为这些反应支持物的影响,并证明了它改变了配合物的反应性,但对配合物的优异的化学选择性不负责任。络合物[MoO(O 2)2(吡唑)(H 2 O)]被证明比[MoO(O 2)具有更高的反应性2(Opyr)(H 2 O)]。