PREPARATION OF SUBSTITUTED OXETANONES FROM BETA-HYDROXY-OMEGA-LACTONES; VARIOUS BETA-HYDROXY AND BETA-KETO-OMEGA-LACTONES

摘要

The invention relates to a novel process for producing a compound having the formula IMAGE I wherein R1, R2 and X are described herein, via corresponding beta -keto- and beta -hydroxy- delta -lactones, as well as novel intermediates which occur in the process.