عنوان
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Homogeneous green catalyst for epoxidation of cyclooctene by mono oxovanadium(IV) complexes of N2O2 donate ligand system
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نوع پژوهش
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مقاله چاپشده در مجلات علمی
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کلیدواژهها
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Aerobic selective oxidation; Cyclooctene epoxidation; Catalytic oxidation of olefins; Vanadyl tetra dentate schiff base complexes; O2 activation
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چکیده
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A significant effort has been done towards the development of new catalysts for the synthesis of epoxides in a more environmental friendly way. We have found that the mono oxovanadium(IV) complexes of the N2O2 donor set ligands are able to catalyze selective epoxidation of cyclooctene with high yield using O2 in polar solvents. In general, catalytic activity increases by decreases of the number of electron – donating groups and the catalytic selectivity varies according to the types of substituents in the ligands. The vanadium complexes with strongly donor ligands, are more stable during the oxidation process. The conversion of cyclooctene increases with the E0 redox/Ep ratio of V5+/V4+ couples. © 2006 Elsevier B.V. All rights reserved.
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پژوهشگران
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سعید رعیتی (نفر سوم)، فرزاد نیک پور (نفر دوم)، سجاد محبی (نفر اول)
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