Selective and mild oxidation of sulfides to sulfoxides or sulfones using H2O2 and Cp′Mo(CO)3Cl as catalysts

Macromolecular peroxo complexes of Vanadium(V) and Molybdenum(VI): Catalytic activities and biochemical relevance

“…1,3,[10][11][12][13][14][15] It has been appreciated for at least 140 years that characteristic colour reactions may occur when hydrogen peroxide is added to solutions of transition metal derivatives. 16 Among the various d o transition metal peroxo systems, V(V), Mo(VI) and W(VI), which have clear structural and isoelectronic relationships, attract continuous research attention because of their versatility and selectivity as stoichiometric or catalytic oxidizing or oxo-transfer agent in a variety of organic oxidations such as epoxidation of alkenes, [17][18][19][20] oxidation of sulfides and sulfoxides, [21][22][23][24][25][26] primary and secondary alcohols, 27,28 as well as halide oxidation. [29][30][31][32] Besides these, the active involvement or relevance of these peroxometallates in haloperoxidase, 29,31,32 their insulino-mimetic, [33][34][35][36] anti-neoplastic 37 and enzyme inhibitory activity 38,39 have been well documented.…”

Oxidative desulfurization of diesel with TBHP/isobutyl aldehyde/air oxidation system

“…The TBHP could be used as oxidant in the presence of various catalysts in ODS process [15][16][17][18][19]. The oxidative desulfurization of HDS diesel was carried out at 333 K using the TBHP as oxidant only.…”

“…Usually, hydrogen peroxide and TBHP are used as the oxidizing reagents because of its high oxidisability in the ODS process. Various studies of oxidation system on this process have been reported, such as H 2 O 2 / formic acid [13], H 2 O 2 /inorganic solid acids [14], Mo/Al 2 O 3 and H 2 O 2 [8], TBHP/Bi-Mo/Siral [15], CpMo(CO) 3 Cl/H 2 O 2 orTBHP [16], (Me 3 TACN)Mn/TBHP [17], V-Mo/TBHP [18], Mo/Al 2 O 3 /TBHP [19]. Recently, the molecular oxygen has been used as the oxidizing reagent in the ODS process because it is cheap, nonpolluting, not strongly corrosive and commercially available.…”

Synthesis, characterization and catalytic study of a novel iron(III)-tridentate Schiff base complex in sulfide oxidation by UHP

“…Good chemical yields of products depending on the nature of the sulfide, in the range of 69-94%, were obtained for all cases. The lower yields were obtained for dialkylsulfide, such as dioctylsulfide with 69% conversion yield that it was lowest yield observed (Table 3, entries [6][7][8]. The change of one or both of the alkyl group in the dialkylsulfide with phenyl or benzylphenyl to probe electronic effects displayed no regular trends in the yield.…”

“…The finding of efficient catalysts for the selective insertion of one oxygen atom from oxygen donors, like iodosylbenzene, dioxygen, hydrogen peroxide, alkylhydroperoxide, or sodium hypochlorite into various organic molecules, under mild conditions, remains a difficult challenge in the fields of chemical and biological catalysis [3,4]. The oxidation of hydrocarbons by transition metal complexes has been studied extensively [5][6][7][8][9][10][11][12][13][14][15]. Among the inorganic mimics of enzymes, metal complexes containing porphyrin, salen (salen = N,N 0 -ethylenebis(salicylideneaminato)), and phthalocyanine ligands have been investigated as possible alternative catalysts in many oxidation and hydroxylation reactions [16][17][18][19][20].…”