Catalytic asymmetric oxidation of sulfide and styrene derivatives using macroporous resins containing chiral metalloporphyrins (Fe,Ru)

A heterogenized vanadium oxo-aroylhydrazone catalyst for efficient and selective oxidation of hydrocarbons with hydrogen peroxide

“…Aqueous 30% hydrogen peroxide (8.12 mol/L) was used, and its exact concentration was determined before use by titration with standard KMnO 4 . The linker N-(triethoxysilylpropyl)salicylaldimine [(EtO) 3 Si-L 1 H] [27] and (E)-N 0 -(2-hydroxybenzylidene)benzohydrazide (H 2 L 2 ) [28] were synthesized according to reported procedures. 1 spectra were recorded by the use of a Bruker 250 MHz spectrometer.…”

“…A 5.0-g sample of the pretreated silica gel powder was suspended in 50 mL of dry toluene under N 2 . (EtO) 3 General procedure for the oxidation of hydrocarbons…”

“…Economically and environmentally, H 2 O 2 and O 2 (or air) are the most attractive oxidants because of their high contents of active oxygen species and coproduction of only water. Therefore, new oxidative processes based on the activation of H 2 O 2 by robust, efficient, and recyclable heterogeneous catalysts have been developed [3,4].…”

Metalloporphyrin Symmetry in Chiral Recognition and Enantioselective Catalysis

“…Our group reported the asymmetric oxidation of sulfides into sulfoxides using macroporous resins containing chiral metalloporphyrins [41] and, more recently, catalytic sulfoxidation reactions with H 2 O 2 in water using a chiral iron porphyrin as a catalyst ( Figure 5) [42]. We also described recent chiral epoxidation of alkenes in water/methanol solutions using H 2 O 2 as an oxidant catalyzed by new optically active water-soluble iron [43] and manganese porphyrins [44] (Figure 5).…”

Highly Selective and Green Oxidation of Sulfides with Urea Hydrogen Peroxide in the Presence of Mn(III) Porphyrin Supported onto Carbon Nanotubes

“…[11][12][13][14] One of the most attractive supports to immobilize catalysts are CNTs that have been used in lots of applications such as, nano sensors for gas sensing and gas adsorption [15] biological and medical chemistry [16] and oxidation of olefins [17,18] and oxidation of sulfides with numerous oxidants such as PhIO, TBHP, H 2 O 2 , TBAP and UHP. [1,3,[19][20][21][22] In the present research the oxidation of sulfides catalyzed by a manganese porphyrin supported on carbon nanotubes (MnTHPPOAc@MWCNT) has been investigated. Also approach to green chemistry is located in the target too.…”