A new strategy for the synthesis of 3-hydroxy-3-cyanomethyl-2-oxindoles and 3,3′-dicyanomethyl-2-oxindoles in a reaction of isatin with ethyl cyanoacetate by Krapcho dealkoxycarbonylation reaction in aqueous media is demonstrated. The reaction provides an easy access to synthetically and medicinally valuable oxindole alkylnitriles in good to very good yields. Wider substrate scope and operationally
提出了一种在
水性介质中通过Krapcho脱氧羰基羰基化反应在
靛红与
氰基
乙酸乙酯反应中合成3-羟基-3-
氰基甲基-2-氧
吲哚和3,3'-二
氰基甲基-2-氧
吲哚的新策略。该反应提供了易于获得的合成和医学上有价值的羟
吲哚烷基腈,收率很高。较宽的基板范围和操作简单的实验程序是已开发协议的突出特点。在控制实验的基础上,合理化了
水的反应机理和协同效应。