Synthesis of 2,7,8-trioxaspiro[4,5]decan-1-ones by manganese(lll)-based reaction

Abstract

Some new spiro bicyclic compounds possessing one 1,2-dioxane ring and one y-lactone ring were successfully synthesized by manganese(III)-based reaction of 1,1-diarylethenes and 2-acetylbutyrolactone under air. The procedure was simple and the product yield was high. The NMR spectrometric features of the products were analyzed and the reaction mechanism is briefly discussed.