Catalytic homogeneous oxidation of monoterpenes and cyclooctene with hydrogen peroxide in the presence of sandwich-type tungstophosphates [M4(H2O)2(PW9O34)2]n−, M = CoII, MnII and FeIII

Alcohol Oxidation Assisted by Molybdenum Hydrazonato Catalysts Employing Hydroperoxide Oxidants

“…For instance, it can be produced by the catalytic oxidation of limonene obtained from the orange peels. Literature reports carveol oxidation with hydrogen peroxide, [M 4 (H 2 O) 2 (PW 9 O 34 ) 2 ] n− (M = Co II , Mn II , Fe III , Co 4 (PW 9 ) 2 , Mn 4 (PW 9 ) 2 , and Fe 4 (PW 9 ) 2 , respectively) as catalysts [7]. The conversion was almost complete, but the selectivity towards carvone was around 50%.…”

Catalytic performance of binary and ternary oxovanadium complexes of dipyridinyl-urea in (ep)oxidation of cis-cyclooctene and 1-octene

“…By definition of the other formed side products at the end of each catalytic process at 45, 70 or 85°C (Table 5), it is highly notable that the formed epoxide 3 experienced further oxidation to give 5, which underwent nucleophilic ring opening of 3 with aqueous hydrolysis forming 6 and 7 (Fig. 4) [23]. From Scheme 2, the amount of 5 and 6 depends upon the type of oxidant.…”

“…Epoxy-1,2-octane is the target product of the 1-octene (ep)oxidation, which is also contaminated with other unwanted products. To the best of our knowledge, it is so far in literatures to explore all possible catalytic (ep)oxidation products of cis-cyclooctene [23] and 1-octene [11] qualitatively and quantitatively. So, the most advantage here is to report the ratios of the most possible products of the cis-cyclooctene or 1-octene (ep)oxidation using an aqueous H 2 O 2 or TBHP catalyzed by VO(acac)(L) or VO(L) 2 in various reaction conditions.…”

Sandwich type polyoxometalates encapsulated into the mesoporous material: synthesis, characterization and catalytic application in the selective oxidation of sulfides

“…Recently, the use of polyoxometalates was promising not only due to bifunctional redox acid catalysts properties but also due to their unusual properties such as high charges, low cost and low environmental impact. [51][52][53] The reaction initially performed in the presence of 5.85 mmol of H 2 O 2 as an oxidant, employing 1 mmol (0.17 mL) diphenyl sulde and 50 mg of catalyst in CH 3 CN (2.5 mL) at room temperature. In order to nd the optimum reaction conditions, the effect of different reaction parameters such as the amount of catalyst, the stoichiometry of H 2 O 2 respect to the catalyst and substrate, solvent, reaction time, different dosages of POM into MIL-101 and the catalytic activities of the different catalysts on the selectivity and conversion of the oxidation reaction were studied.…”