Return to Article Details Investigation of Nitrogen- and Sulfur-containing Heterocycles. 53. Reactions of 5-Amino-6-mercaptopyrimidines with Derivatives of <i>p</i>-Chloronitrobenzene. Synthesis of a New Heterocyclic System – Pyrimido[4,5-<i>b</i>]-1,4-benzothiazepine Download Download PDF