2-Amino-5,8-dimethoxy[1,2,4]triazolo[1,5-c]-pyrimidine is prepared from a 5-chloro or 5-methoxy substituted 3-amino-8-methoxy[1,2,4]triazolo[4,3-c]-pyrimidine by reaction with methoxide in an alcohol solvent. Both rearrangement and, when the 5-substituent is chloro, methoxy substitution can be accomplished directly.
2-
氨基-5,8-二甲氧基[1,2,4]三唑[1,5-c]-
嘧啶是由5-
氯或5-甲氧基取代的3-
氨基-8-甲氧基[1,2,4]三唑[4,3-c]-
嘧啶与甲氧基在醇溶剂中反应制备而成。当5-取代基是
氯时,可以直接完成重排和甲氧基取代。