Catalytic performance of binary and ternary oxovanadium complexes of dipyridinyl-urea in (ep)oxidation of cis -cyclooctene and 1-octene
作者： Mohamed Shaker S. Adam , Aly M. Hafez , Ibrahim El-Ghamry
DOI: 10.1007/S11144-018-1399-8
关键词: Cyclooctene 、 Stability constants of complexes 、 Alkene 、 Ternary operation 、 Chemistry 、 Nuclear chemistry 、 Aqueous solution 、 1-Octene 、 Solvent 、 Catalysis
摘要: Two novel ternary and binary mono-oxovanadium(IV) complexes of acetylacetonate (ac) 1,3-dipyridin-2-yl-urea are synthesized, as VO(acac)(L) (1:1) VO(L)2 (1:2). They characterized by various physico-chemical spectroscopic tools. The formation constants Kf calculated from the spectrophotometric measurements. catalytic potential has been examined in (ep)oxidation alkenes (cis-cyclooctene 1-octene) an aqueous hydrogen peroxide, H2O2, tert-butyl hydroperoxide, TBHP. effects temperature, solvent oxidant/alkene molar ratio studied order to get optimized reaction conditions. Most products cis-cyclooctene 1-octene determined qualitatively quantitatively using gas chromatographic analysis. increase catalyst amount double time reduces process with improvement chemoselective epoxy product.
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