Dimethyldioxirane reacts rapidly at room temperature in acetone with a variety of furans, furnishing in high yield products of oxidative ring opening and, with 2-furanmethanol, 2H-pyran-3(6H)-one via subsequent ring closure.
Unsaturated aldehydes including malealdehyde, generated in acetone by oxidation of furans with dimethyldioxirane, can be trapped efficiently by phosphoranes in Wittig reactions.
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