New approaches to the synthesis of spiro-peroxylactones

Abstract

Ozonolysis of (alkenyldioxy)cyclododecyl hydroperoxides in trifluoroethanol gave a separable mixture of the corresponding α-hydroperoxy- and α-hydroxy-substituted spiro-tetraoxacycloalkanes with ring sizes in the range 7–12. Dehydration of the hydroperoxides or oxidation of the hydroxy-compounds afforded the corresponding peroxylactones. The solid-state structure of 1,2,6,7-tetraoxaspiro[7.11]nonadecan-3-one was determined by X-ray crystallographic analysis.