Abstract
The present paper describes the enantioface-differentiaing epoxidation of alkylidenemalononitriles with molecular oxygen, catalyzed by chiral tertiary amines. In the light of the by-product formation, the reaction path was concluded to involve intermolecular nucleophilic attack of a hydroperoxide intermediate catalyzed by a chiral tertiary amine. A similar epoxidation was demonstrated with cumylhydroperoxide in the presence of nicotine.
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