Highly efficient oxidation of various thioethers catalyzed by organic ligand-modified polyoxomolybdates

Abstract

Herein, four hybrid dimers based on the carboxylic acid ligand-modified polyoxomolybdates were prepared, which could rapidly and selectively oxidize various phenyl sulfides and the sulfur mustard simulant 2-chloroethyl ethyl sulfide (CEES).

{Cu8} Cluster-Sandwiched Polyoxotungstates and Their Polymers: Syntheses, Structures, and Properties

“…The stability of catalyst 1 was verified by PXRD data of fresh and the recovered catalyst after five-run reactions (Figure S9). In light of previous research and the results mentioned above, we propose a possible mechanism of aromatic thioether selective oxidation in Figure b, which proves that the active tungsten peroxide and peroxycuprate species derived from compound 1 and H 2 O 2 worked on the S atom of the sulfides to yield the corresponding products …”

“…In light of previous research and the results mentioned above, we propose a possible mechanism of aromatic thioether selective oxidation in Figure 4b, which proves that the active tungsten peroxide and peroxycuprate species derived from compound 1 and H 2 O 2 worked on the S atom of the sulfides to yield the corresponding products. 46 Visible Light-Driven H 2 Evolution Study. The valence band (VB) position of photocatalyst 1 was also measured by valence band X-ray photoelectron spectroscopy (VBXPS).…”

Assembly of a Hexameric Cluster of Polyoxomolybdotriphosphonate Builts from [Zn(H2O){TeMo6O21}{N(CH2PO3)3}]6– Subunits and Its Optical and Catalytic Properties

“…In recent years, the oxidation of organosulfur compounds has been of topical interest because of the wide application of their oxygenation products in functional materials, oxo-transfer reagents, organic synthesis, etc. − According to previous reports, most POMs are widely considered to be good candidates for catalysis of sulfides. In this case, 1 was considered as a catalyst to investigate its catalytic effects in the presence of TBHP as the oxidant with thioanisole as a model substrate (TBHP = tert -butyl hydroperoxide) (Scheme S1).…”

Hollow Lindqvist-like-Shaped {V6} Cluster-Based Metal–Organic Framework for the Highly Efficient Detoxification of Mustard Gas Simulant

“…However, the selective oxidation of HD to sulfoxide is paramount during decontamination because overoxidation product sulfone is as toxic as HD. 5,6 Toward this end, a variety of catalysts for HD and/or its simulant detoxifier have been explored, including metal oxides, 7,8 polyoxometalates (POMs), 9,10 metal−organic frameworks (MOFs), 11,12 and POM-based MOFs (POMOFs). 13−16 Among these materials, POMOF, as a crystalline hybrid material constructed of POMs and MOFs, has attracted extensive attention in the domain of heterogeneous catalysis.…”

“…The effective conversion of chemical war agents (CWAs) into environmentally friendly products under gentle conditions is a crucial issue. , Bis­(2-chloroethyl) sulfide, commonly called mustard gas or HD, is a badly toxic blistering CWA which has been widely used in combat and terrorist attacks because it can be facilely produced. , To date, the oxidation degradation of HD is a more feasible route than hydrolysis and dehydrochlorination, which are generally slow and incomplete due to water immiscibility. However, the selective oxidation of HD to sulfoxide is paramount during decontamination because overoxidation product sulfone is as toxic as HD. , Toward this end, a variety of catalysts for HD and/or its simulant detoxifier have been explored, including metal oxides, , poly­oxo­metalates (POMs), , metal–organic frameworks (MOFs), , and POM-based MOFs (POMOFs). − …”