Chemoselective oxidation of sulfides to sulfoxides with urea hydrogen peroxide (UHP) catalyzed by non-, partially and fully β-brominated meso-tetraphenylporphyrinatomanganese(III) acetate

A Comparative Study of Catalytic Activity of Fe, Mn and Cu Porphyrins Immobilized on Mesoporous MCM-41 in Oxidation of Sulfides

“…[9][10][11][12] These metallo-complexes are able to catalyze selective oxidation processes with a variety of oxygen donors. [13][14][15] Unfortunately, metalloporphyrins as homogeneous catalysts encountered with some drawbacks, i.e, they may easily be destroyed during the reaction and has little stability toward oxidative degradation and they cannot be easily recovered after the reaction. Also high cost of the synthetic porphyrins makes their recovery compulsory.…”

Synthesis and Characterization of Sulfamic Acid-Functionalized Nanoparticles and Study of Its Catalytic Activity for the Oxidation of Sulfides to Sulfoxides

“…[12,13] Organic sulfoxides are useful and active intermediates in both laboratory and industry, organic synthesis and therefore the chemoselective oxidation of organic sulfides to the corresponding sulfoxides has been the subject of various studies for the past two decades. [14] Although a wide variety of reagent and catalytic systems are available for this key transformation, [15][16][17][18][19][20][21][22] the major disadvantages of these methods include removal or recovery of the expensive catalyst, the formation of large amounts of toxic waste, overoxidation of sulfoxides to sulfones and long reaction time, hence an environmentally benign process and develop new catalysts remains in great demand to overcome these drawbacks.…”

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

“…[1][2] Therefore, catalytic oxidation of sulfides to sulfoxides has been extensively studied. [3][4][5] Recently, metalloporphyrins as models of hemes or cytochrome P-450 have gained considerable attention due to their catalytic activity for monooxygenation action by formation of a high valent metal-oxo complex intermediate. [6][7][8][9][10] On the other hand, homogeneous processes have some problems such as separation, recovery and disposal of spent catalysts, thus are not affordable and their uses are greatly limited.…”

“…[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.…”