Solution of the problem of selective oxidation of alkylarens by molecular oxygen into corresponding hydroperoxides. Catalysis initiated by Ni(II), Co(ll) and Fe(lll) complexes activated by additives of electron-donor mono- or multidentate extra-kigands.

Mechanismofdiscoveredbyauthorandhiscollaborators[21-26]phenomenonofactivity increaseofcomplexesM(L1)2(M=Ni(II),Co(II),L1=acac")ascatalystsofalkylarens(ethylbenzene, cumene,toluene)oxidationbymolecular0 2inROOHinthepresenceofelectron-donoradditives ofmonodentateligandsL2(L2=HMPA(hexamethylphosphorustriamide),dimethylformarnide (DMFA),N-methylpyrrolidone-2(MP)),MSt(M=Li,Na,K)wasstudied.Onthebaseof establishedmechanismofNi(II)(L1) 2complexescatalyticactivitycontrolbymonodentateligandsmodifiersL2inethylbenzeneoxidationreactiontheoptimizationmethodsofprocessesofselective ethylbenzeneoxidationintoa-phenylethylhydroperoxidewereproposedandrealized.Valuesof selectivity,conversiondegreeandROOHyieldreachedatthatexceedanalogousparametersinthe presenceof{Ni(II)(L1)2+L2}andknowncatalystsof.ethylbenzeneoxidationintoROOH.The methodofestimationofselectivecatalyticparticlesactivityformedinthecourseofethylbenzene oxidationandatelementaryprocessstagesissuggested. Keywords:oxidation,ethylbenzene,a-phenylethylhydroperoxide,homogeneouscatalysis, molecularoxygen,nickel(II)bis(acetylacetonate),nickel(II)bis(enaminoacetonate),cobalt(II) bis(acetylacetonate),iron(III)tris(acetylacetonate),macrocyclepolyether18K6,quaternary ammoniumsalts~NBr.