PROCESS FOR PRODUCING EPOXIDE.

摘要

A process for producing an epoxide represented by general formula (1a) or (1b), which comprises reacting an olefin represented by general formula (2) with a compound containing iodine and an acyloxy ion and treating the reaction product under a basic condition so as to form an oxirane ring on the stereochemically crowded side of the feed olefin. In formulae (1a), (1b) and (2), R<1>, R<2>, R<3> and R<4> represent each hydrogen, alkyl, alkenyl, aryl, alkoxy, aryloxy, acyl, alkoxycarbonyl, aryloxycarbonyl, aralkyl, silyl or silyloxy, provided that when each of these groups represents a divalent group, they may be combined together to represent a cyclic group, and that these groups may be the same or different from one another and further may be substituted or branched. The plane formed by the double bond, R<1>, R<2>, R<3> and R<4> has one side which is stereochemically more crowded than the other side.