It was of interest to prepare vinylpyrimidines in order to study their polymerization and the properties of their polymers. In particular the effect of a vinyl monomer, which would give a polymer of related structure to a portion of a polynucleic acid, on abnormal cell mitosis was of interest. Many of the most promising compounds tested against sarcoma 180 with the exception of nitrogen mustards contain a pyrimidine or triazine ring. Rather few synthetic ...