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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 15, Number 12
BKCSDE 15(12)
December 20, 1994

Title	Epoxidation of Olefins by Iodosylbenzene Catalyzed by Non-Porphyrin Metal Complexes
Author	Wonwoo Nam*, Seung Joong Baek, Kazuko I. Liao, Joan Selverstone Valentine
Keywords
Abstract	Epoxidation of olefins has been studied using iodosylbenzene (PhIO) as the terminal oxidant and binuclear and mononuclear complexes of Mn2+, Co2+, and Cu2+ as catalysts. Epoxides were the predominant products with trace amounts of allylic oxidation products, and the metal complexes were found to be effective catalysts in the epoxidation reactions. The reactivity of binuclear copper complexes was greater than that of the mononuclear copper complexes, whereas the binuclear and mononuclear complexes of Mn2+ and Co2+ showed similar reactivities. The nature of the ligands bound to copper did not influence the reactivity of the binuclear copper complexes so long as copper ions were held in close proximity. A metal-iodosylbenzene complex, such as suggested previously for Lewis acidic metal complex-catalyzed epoxidation by iodosylbenzene, is proposed as the active epoxidizing species. Some mechanistic aspects are discussed as well.
Page	1112 - 1118
Full Text	PDF

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