A method for preparing a compound of formula (I) by reacting the appropriate alkyl ester and an aniline derivative, in a refluxing mixture containing an aliphatic solvent or a mixture of aliphatic solvents having a boiling point in the range of 68-191 °C; condensing vapors of the refluxing mixture; treating the condensed vapors with an alcohol scavenging agent or a mixture of alcohol scavenging agents; and returning the condensed vapors back to the reaction mixture.
一种制备式(I)化合物的方法,通过反应适当的烷基酯和
苯胺衍
生物,在含有沸点在68-191°C范围内的脂肪溶剂或脂肪溶剂混合物的回流混合物中,将回流混合物的蒸汽凝结;用醇清除剂或醇清除剂混合物处理凝结的蒸汽;并将凝结的蒸汽返回到反应混合物中。