alkoxymethylene-N,N-dimethyliminium salts, the adduct formed from DMF and O-alkylating agents. The advantages of this new method are mild reaction conditions, low cost, avoiding the use of chlorinating agents and easy purification of the products. The best results were obtained when DMF and dimethyl sulfate were used at room temperature.
通过席夫碱,取代的
乙酸与烷氧基亚甲基-N,N-二甲基
亚胺盐,
DMF和O-烷基化剂形成的加合物之间的新型反应,以良好至极佳的产率合成了许多
2-氮杂环丁酮。这种新方法的优点是反应条件温和,成本低,避免使用
氯化剂和易于纯化产物。当在室温下使用
DMF和
硫酸二甲酯时,可获得最佳结果。