Citation: Yuan Yong YAN, Tie Jun WANG, Jian Ping GUO, Mei Yu HUANG, Ying Yan JIANG. AEROBIC EPOXIDATION OF STYRENE CATALYZED BY MAGNESIUM OXIDE SUPPORTED POLYTITAZANE COBEST (Ⅲ) COMPLEXES[J]. Chinese Chemical Letters, ;1996, 7(8): 749-752. shu

AEROBIC EPOXIDATION OF STYRENE CATALYZED BY MAGNESIUM OXIDE SUPPORTED POLYTITAZANE COBEST (Ⅲ) COMPLEXES

Institute of Chemistry, Academia Sinica, Beijing 100080

Received Date: 29 February 1996

Fund Project: We are grateful to the National Natural Science Foundation of China and the Science Foundation of the Polymer Physics Laboratory,Academia Sinica for supporting this research.

Magnesium oxide supported polytitazane-cobalt (Ⅲ) complex has been prepared and found to be capable of catalyzing the epoxidation of styrene to form styrene oxide in 88.0% yield in the presence of isobutyraldehyde under an atmospheric pressure of molecular oxygen at room temperature. XPS data shows that the high valent cobalt (Ⅲ) is stabilized by the multidentate nitrogen ligand of polytitazane. Dichloroethane is the best solvent chosen for this reaction. The catalyst can be reused for several times without any remarkable loss in catalytic activity and selectivity.
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