Abstract

A simple and efficient methodology for the direct halogenation of N-phenylureas was developed using trihaloisocyanuric acids in acetonitrile at room temperature. This protocol proved to be effective for the construction of N-phenylureas with different patterns of substitution. Additionally, less reactive N-benzylureas were halogenated in the presence of a mixture of trifluoroacetic acid and acetonitrile at room temperature.

A simple and efficient methodology for the direct halogenation of N-phenylureas was developed using trihaloisocyanuric acids in acetonitrile at room temperature. This protocol proved to be effective for the construction of N-phenylureas with different patterns of substitution. Additionally, less reactive N-benzylureas were halogenated in the presence of a mixture of trifluoroacetic acid and acetonitrile at room temperature.

中文翻译：

---

三卤代异氰尿酸对不对称N-苄基和N-苯基脲的高效直接卤化反应

摘要

在室温下，使用三卤异氰尿酸在乙腈中开发了一种简单有效的方法，用于直接卤化N-苯基脲。该方案被证明对于构建具有不同取代模式的N-苯基脲是有效的。另外，在室温下，在三氟乙酸和乙腈的混合物存在下，将反应性较低的N-苄基脲卤化。

在室温下，使用三卤异氰尿酸在乙腈中开发了一种简单有效的方法，用于直接卤化N-苯基脲。该方案被证明对于构建具有不同取代模式的N-苯基脲是有效的。另外，在室温下，在三氟乙酸和乙腈的混合物存在下，将反应性较低的N-苄基脲卤化。