Abstract
In this work we report an economical and efficient protocol for the epoxidation of a,bunsaturated esters as pentinolides, using DMDO in a basic-aqueous medium, with yields of 64-91% in 30 min. and chemoselective epoxidation using an OXONE- m CPBA mixture to preferentially oxidize an electrophilic double bond than an electronrich double bond. As well as the influence of the substituents on the stereoselectivity of the reaction.
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