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KMID : 1059519940380040295
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Journal of the Korean Chemical Society
1994 Volume.38 No. 4 p.295 ~ p.301
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Synthesis and Catalytic Activity of Transition Metal (Ru3+, Ni2+, Cu2+, Pd2+)-Polyaza(N4) Complexes for Olefin Oxidation
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Park Yu-Chul
Kim Seong-Su
Na Hun-Gil
Lee Dong-Cheol
Shin Sang-Hee
Byun Jong-Chul
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Abstract
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The Ru(Ⅲ), Ni(Ⅱ), Cu(Ⅱ), and Pd(Ⅱ) complexes of N4-polydentate ligands(meso-Me6-[14]-ane, rac-Me6-[14]-ane, and cyclam) have been prepared and their catalytic activity and selectivity in the oxidation of olefins in the presence of oxidant such as NaOCl, H2O2, t-BuOOH, and PhIO studied. The oxidations of cyclohexene, 1-hexene, cyclooctene, 1-octene, and styrene as substrates have been investigated gas chromatographically. The Ru(Ⅲ)-N4 complexes showed high selectivity for epoxide in the catalyzed oxidation of olefins with NaOCl. The catalytic activities of Ru(Ⅲ)-N4 complexes were discussed in terms of the flexibility of N4-polydentate ligands, the Ru(Ⅲ)-Cl bond interaction and the steric effect of oxidants. The oxidation of 1-octene using PhIO as oxidant was carried out to verify. The Pd(Ⅱ) complex turned out to be more active catalyst than the Ni(Ⅱ) complexes.
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