Transition metal coordination polymers MeX2(4,4¡äbipyridine) (Me = Co, Ni, Cu; X = Cl?/sup>, CH3OCO?/sup>, acetylacetonate) selective catalysts for cyclohexene epoxidation with molecular oxygen an

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Transition metal coordination polymers MeX₂(4,4¡äbipyridine) (Me = Co, Ni, Cu; X = Cl^{?/sup>, CH₃OCO^{?/sup>, acetylacetonate) selective catalysts for cyclohexene epoxidation with molecular oxygen an}}

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作者：Emilian Angelescu^a ; Octavian D. Pavel^a ; Rodica Ionescu^a ; Ruxandra Bî ; rjega^b ; Mihaela Badea^c ; Rodica Z?voianu^a ; ^{rodicazavoianu@gmail.com}
关键词：Co coordination polymers ; Ni coordination polymers ; Cu coordination polymers ; 4 ; 4&prime ; -bipyridine ; Supramolecular materials ; Cyclohexene epoxidation ; Mukayiama reaction
刊名：Journal of Molecular Catalysis A: Chemical
出版年：2012
出版时间：January, 2012
年：2012
卷：352
期：Complete
页码：21-30
全文大小：1017 K

文摘

This paper presents aspects concerning the catalytic activity of several transition metal coordination polymers with the general formula ²_{?/sub>[Me(II)X₂(4,4¡äbipyridine)] (Me(II) = Co, Ni, Cu; X = Cl^{?/sup>, CH₃OCO^{?/sup>, and acetylacetonate) towards the epoxidation of cyclohexene with molecular oxygen in the presence of isobutyraldehyde as reductant. The obtained results proved that all the investigated catalysts showed a high selectivity for epoxidation (over 88 % ). The conversion of cyclohexene was found to depend on the nature of both the transition metal cation and the ligand X. The most active catalyst was found to be ²_{?/sub>[Co(II)(CH₃OCO)₂(4,4¡äbipyridine)].}}}}