Abstract Polystyrene-supported pyrrole-2-carbohydrazide (PSP) was synthesized and combined with CuI to make up a recyclable heterogeneous catalytic system for Ullmann-type C–N coupling reaction in water. In which, a variety of functionalized aryl halides animated efficiently with anilines, benzylamine, aliphatic amines, and imidazole. its preliminary application resulted in a more practical synthesis of imidazo [1, 2-a] quinoxaline.
![1-[4-(butylamino)phenyl]ethanone Structure](https://image.chemsrc.com/caspic/112/99433-24-6.png)
