Process for the preparation of unsubstituted or substituted 2-amino-[1,2,4]triazolopyrimidines which comprises combining A) 2-amino-pyrimidine or its derivatives with alkyloxycarbonyl isothiocyanate or aryloxycarbonyl isothiocyanate with B) hydroxyl ammonium salt and a base wherein the reaction is carried out in a polar aprotic organic solvent in the temperature range of from 40 to 150 °C.
制备未取代或取代的2-
氨基-[1,2,4]三唑
嘧啶的过程包括将A) 2-
氨基嘧啶或其衍
生物与烷氧羰基异
硫氰酸酯或芳氧羰基异
硫氰酸酯结合,再与B)
羟胺盐和碱反应,在极性无
水有机溶剂中在40至150°C的温度范围内进行反应。