Abstract
Reaction of cycloheptanone with potassium persulfate, in ethanol or methanol, gave ethyl or methyl 7-hydroxyheptanoate which, by oxidation with PCC, were converted into ethyl or methyl 7-oxoheptanoate in good yields. Protection of aldehyde group of methyl 7-oxoheptanoate, followed by one-step conversion of carboxylic ester to the acetate gave, after regeneration of aldehyde group, 7-acetoxyheptanal.