Boreskov Institute of Catalysis of the Siberian Branch of Russian ...

PP-III-36phase. Peroxopolyoxometallate complex containing an organic cation dissolves well in theorganic phase and acts as an active agent of oxygen transportation to substrate. Regenerationof the complex proceeds on the phase boundary upon its interaction with hydrogen peroxide.To increase the phase interface, one should intensively mix a two-phase system in the«catalytic duck» reactor.As follows from our study, epoxidation reactions of olefins (1-octene, cyclooctene,cyclohexene) and unsaturated fatty acids (oleic and ricinoleic acids) to correspondingepoxides carry out at temperature 40-65 °C, atmospheric pressure. For example, the yields of1,2-epoxycyloalcanes in cycloolefine epoxidation processes by hydrogen peroxide are 70-90% at 92-94% of selectivity, and the yields of cis-9,10-epoxyoctadecanoic and cis-9,10-epoxy-12-hydroxyoctadecanoic acids in oxidations of oleic and ricinoleic acids are 86% and78%, respectively.Processes of oxidation cleavage of these substrates also proceed with high yields andselectivities.This study was financially supported by the Siberian Branch of the Russian Academy ofSciences (Project No 32) and the RAS Integration Project No 5.6.3.References1. A. Dijksman, I.W.C.E. Arends, R.A. Sheldon // Chem. Commun. No. 16. 1999. P. 1591-1592.2. Z.P. Pai, A.G. Tolstikov, P.V. Berdnikova, G.N. Kustova, T.B. Khlebnikova, N.V. Selivanova,A.B. Shangina, and V.G. Kostrovskii // Russian Chemical Bulletin, International Edition. V. 54, No. 8.2005. P. 1847-1854.3. C. Venturello and M. Gambaro // J. Org. Chem. V. 56. 1991. P. 5924.372