Synthesis and thermal properties of azo-peroxyesters

Abstract  

New azo-perester derivatives of tert-butyl and tert-amyl hydroperoxides were obtained in reactions of azo acid chlorides with hydroperoxides in the presence of an inorganic base. Obtained azo-peresters possess two kinds of the labile functional groups: the azo group and also the perester group. The data from DSC experiments indicate that in the case of azo-perester derivatives of tert-amyl hydroperoxide, the perester group decomposes at a somewhat lower temperature than in the case of tert-butyl derivatives, whereas azo groups decompose at somewhat higher temperature in the case of derivatives with tert-amyl substituent.