Synthesis of New Peroxy Esters and the Ability of Initiation for, Polymerization of Styrene

Abstract

Four new peroxy esters, of which three compounds have the carboxy groups in the neighboring positions of the peroxyl group, were synthesized in good yields. t-Butyl 2(carboxy)cyclohexaneperoxycarboxylate and t-butyl cis-6-carboxy-3-cyclohexene-1-peroxycarboxylate were prepared by adding t-butyl hydroperoxide to each corresponding dicarboxylic acid without solvent, t-Butyl o-carboxyperbenzoate and t-butyl o-chloroperbenzoate were prepared by adding t-butyl hydroperoxide to phthalic anhydride and o-chlorobenzoyl chloride, respectively. The polymerimti6n of styrene was carried ogt by using three peroxy esters having the carboxyl groups as the initiators. The polymerization was initiated by the peroxy esters, but it was slow itomparedi with that, initiated by azobisisobutyronitrile under the same conditions.