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Csürs 方法乃以2-氨基苯甲酸或酯与Vilsmeier 试剂作用,生成脒,继而与伯胺作用,得到3-取代-4(3 H)-喹唑酮。我们用4-氯2-氨基苯甲酸进行 Csür(?)s 反应,分离出
Csürs processes react with 2-aminobenzoic acid or ester with Vilsmeier reagent to form amidine followed by primary amine to give 3-substituted-4 (3H) -quinazolone. We use 4-chloro-2-aminobenzoic acid Csür (?) S reaction, isolated