Studies with Polyfunctionality Substituted Heterocycles: Novel Syntheses of Thienopyrimido-1,2,4-triazoles
作者:A. B. A. El-Gazzar、M. I. Hegab、S. A. Swelam、A. S. Aly
DOI:10.1080/10426500210219
日期:2002.1.1
Several 3-substituted-(un)-cyclohepta(b)thieno[2,3-d]pyrimido[3,4-a]-1,2,4-triazoles 10, 11, 12, 13, and 14 were prepared by reaction of an appropriate substituted 2-amino-3-cyanothiophene 1 with aliphatic acids or benzoyl chloride. Also the fusion of 1 with urea, thiourea to give the corresponding 2-oxo or thioxo-4-aminopyrimidine derivatives 6a, b and other reactions of compound 1 are reported.