Synthesis of Some New Pyrazolotriazines, Pyrazolothiazines and Pyrazolopyrimidines

Abstract

The syntheses of novel derivatives of pyrazolo[1,5-a]-s-triazine, pyrazolo[3,4-d][1,3]thiazine and pyrazolo[3,4-d]pyrimidine, starting from 4-substituted 5-aminopyrazole-1-carbothioamides, are reported.