The Synthesis of Pyrazolo[1,5-<i>b</i>][1,2,4]triazines, A New Heterocyclic Ring System
作者:D. Robert Sliskovic、Marshall Siegel、YANG-I Lin
DOI:10.1055/s-1986-31483
日期:——
Four representatives of the new ring system pyrazolo[1,5-b][1,2,4]triazine were prepared by N-amination of 3(5)-aminopyrazole or its 5(3)-phenyl derivative and cyclocondensation of the resultant 1,5-diaminopyrazoles with glyoxal, butanedione, or benzil.
通过3(5)-氨基吡唑或其5(3)-苯基衍生物的N-氨化,以及所得1,5-二氨基吡唑与乙二醛、丁二酮或苯偶酰的环缩合,制备了新的环状系统吡唑并[1,5-b][1,2,4]三嗪的四个代表。