【Abstract】 The acetone solution of dimethyldioxirane was prepared with caroate (KHSO5) andacetone.This solution can be kept at low temperature(-20℃) for days. It is much conve-nient to use the oxidant for the epoxidation of carbon carbon double bonds in some unsaturat-ed natural products. Five unsaturated compounds were oxidized to the corresponding epox-ides with dimethyldioxirane and the reaction selectivity was discussed.更多还原