A SIMPLE STEREOSELECTIVE SYNTHESIS OF (l<i>R</i>,3<i>R</i>,5<i>S</i>)-1,3-DIMETHYL-2,9-DIOXABICYCLO[3,3,1]NONANE USING REGIOSELECTIVE RING-OPENING OF (<i>R</i>)-β-METHYL-β-PROPIOLACTONE
A facile stereoselective synthesis of (1R,3R,5S)-1,3-dimethyl-2,9-dioxabicyclo[3.3.1]nonane was achieved from (R)-2-hydroxy-7-octen-4-one, which was easily prepared by the copper-catalyzed reaction of (R)-β-methyl-β-propiolactone with vinylmagnesium bromide.