Reactions with Heterocyclic Amidines, XI. Syntheses of New 2-Aminopyrazolo[1,5—a]pyrimidines and 2-Amino[1,5-c]-as-triazines
作者:Ezzat M. Kandeel、Victorin B. Baghos、Ivon S. Mohareb、Mohamed H. Elnagdi
DOI:10.1002/ardp.19833160813
日期:——
Severalnew aminopyrazolo[1,5—a]pyrimidines were synthesised by condensation of 3,5‐diamino‐4‐(ethoxycarbonyl)pyrazole (1) with β‐bifunctional reagents. The azo analogues of pyrazolo[1,5—a]pyrimidines, i. e. pyrazolo[1,4‐c]‐as‐triazines, were synthesised by coupling of diazotized 1 with agents containing active hydrogen.