Transition metal coordination polymers MeX2(4,4′bipyridine) (Me = Co, Ni, Cu; X = Cl−, CH3OCO−, acetylacetonate) selective catalysts for cyclohexene epoxidation with molecular oxygen and isobutyraldehyde
Transition metal coordination polymers MeX2(4,4′bipyridine) (Me = Co, Ni, Cu; X = Cl−, CH3OCO−, acetylacetonate) selective catalysts for cyclohexene epoxidation with molecular oxygen and isobutyraldehyde
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DOI：
10.1016/j.molcata.2011.08.001
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发表时间：
2012
影响因子：
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通讯作者：
E. Angelescu;O. Pavel;R. Ionescu;R. Bȋrjega;M. Badea;R. Zăvoianu
中科院分区：
文献类型：
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作者：
E. Angelescu;O. Pavel;R. Ionescu;R. Bȋrjega;M. Badea;R. Zăvoianu
本文研究了几种通式为2 ∞[Me（II）X2（4，4 ′-bipyridine）]（Me（II）=Co，Ni，Cu; X=Cl-，CH_3 OCO-，乙酰丙酮根）的过渡金属配位聚合物在异丁醛存在下对环己烯与分子氧环氧化反应的催化活性。结果表明，所研究的催化剂均具有较高的环氧化选择性（88%以上）。发现环己烯的转化率取决于过渡金属阳离子和配体X的性质。最高活性的催化剂为2 ∞[Co（II）（CH 3 OCO）2（4，4 ′bipyridine）]。
This paper presents aspects concerning the catalytic activity of several transition metal coordination polymers with the general formula2∞[Me(II)X2(4,4′bipyridine)] (Me(II)=Co, Ni, Cu; X=Cl−, CH3OCO−, 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 be2∞[Co(II)(CH3OCO)2(4,4′bipyridine)].