Synthesis of polyoxiranes and polythiiranes bearing a potential aldehyde group in the side chain

Polyoxiranes and polythiiranes with acetal group in the side chain are prepared by polymerization of 1,1-diethoxy-2,3-epoxy-propane (DEO) and of the corresponding thiirane (DET) using different chiral and achiral initiators. In the case of poly(DET) acetal groups can be removed leading to a polymer with an aldehyde content up to 64 %. In similar experimental conditions the extent of acetal hydrolysis does not exceed 23 % for poly(DEO).