A comparative study involving four manganese(III) porphyrincatalysts combined with two different oxidants (sodium hypochlorite and potassium monopersulfate) has been performed in the epoxidation of three terpene derivatives. The catalytic oxidation of α-pinene produces selectively 100% of the epoxide or 65% of allylic oxidation products, only by modification of the substituents on the meso-positions
Several mono or non conjugated diolefins are submitted to the action of oxygen in presence of catalytic amounts of PdCl (NO2) (CH3CN)2. Depending on the olefin structures methylketones or epoxides are obtained.
Hydrogen peroxide oxidation catalyzed by heteropoly acids combined with cetylpyridinium chloride. Epoxidation of olefins and allylic alcohols, ketonization of alcohols and diols, and oxidative cleavage of 1,2-diols and olefins
Oxidative dihydroxylation of alicyclic unsaturated hydrocarbons with vinyl- and norbornene fragments in pseudohomogenic system
作者:Kh. M. Alimardanov、N. I. Garibov、M. Ya. Abdullaeva、O. A. Sadygov、A. D. Kuliev、E. G. Ismailov
DOI:10.1134/s1070363213010118
日期:2013.1
Oxidation of alicyclic unsaturated hydrocarbons (4-vinylcyclohexene, 5-vinylnorbornene, 5-cyclohexenylnorbornene, and 5-vinylbicyclooctene) with 30% hydrogen peroxide solutions and percarbamide is studied. Reaction was carried out at 40-70A degrees C in the presence of heterogenized peroxocomplex compounds of molybdenum and tungsten formed "in situ" in the reaction of metal oxohalides with H3PO4, nano-dimensional particles of carbon material, and hydrogen peroxide. Main oxidation products of alicyclic diene hydro-carbons are the corresponding unsaturated epoxides and diols. Depending on the reaction condition their ratio varies in a wide range.
Oxygen-transfer reactions catalyzed by nitropalladium(II) complexes. Reactivity of bis(.mu.-chloro)bis[exo-3-(nitrosooxy)bicyclo[2.2.1]hept-2-yl-C,N]dipalladium: cleavage of the carbon-palladium bond