Catalytic Epoxidation of Enones Mediated by Zinc Alkylperoxide/tert-BuOOH Systems

Autor:	Tomasz Pietrzak, Iwona Justyniak, Marcin Kubisiak, Abdul Raheem Keeri, Janusz Lewiński, Larissa Hartenstein, Zbigniew Ochal, Karolina Zelga, Peter W. Roesky, Ewa Tratkiewicz
Rok vydání:	2013
Předmět:	Inorganic Chemistry chemistry Ligand Organic Chemistry chemistry.chemical_element Organic chemistry High activity Zinc Physical and Theoretical Chemistry Aminotroponiminate Combinatorial chemistry Catalytic method Catalysis
Zdroj:	Organometallics. 32:5263-5265
ISSN:	1520-6041 0276-7333
Popis:	The epoxidation of enones by zinc alkylperoxides is a challenging task receiving considerable attention in contemporary research; however, until now no well-defined zinc alkylperoxide based systems have been described. Here, a new catalytic method of epoxidation of enones in the presence of zinc alkylperoxides supported by N,N-bidentate ligands and tert-butyl hydroperoxide is reported. A new dimeric zinc alkylperoxide complex supported by an aminotroponiminate ligand is also presented. The studied catalytic systems show high activity in the epoxidation of trans-chalcone, and in the case of a chiral catalyst with the (S,S)-N,N′-bis(1-phenylethyl)aminotroponiminate ligand a moderate enantioselectivity was achieved.
Databáze:	OpenAIRE
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