Functional Monomers and Polymers. XLV. Activation Parameters for Polymerization of N-[btilde]-Methacryloyloxyethyl Type Monomers Containing Nucleic Acid Bases

In order to determine the effect of functional structure of ester groups on the stereoregularity of polymers, polymerization of N-btilde]-methacryloyloxyethyl type monomers containing nucleic acid bases was made by using a free-radical initiator. From the NMR spectrometric determination of the stereoregularity of the polymers obtained, it was found that for polymerization of the monomer with adenine as the side group in dimethyl sulfoxide solution, syndiotactic placement appears to be favored by the additional enthalpy of activation required for isotactic placement.