The heterogeneous three-component reaction of 2-aminopyridines, acetophenones and benzyl cyanide was achieved in NMP at 120 °C by using an MCM-41-anchored L-proline‑copper(I) complex [MCM-41-L-Proline-CuI] as catalyst under air, yielding a wide variety of 3-cyanoimidazo[1,2-a]pyridines in moderate to high yields. The new heterogeneous copper catalyst exhibited higher catalytic activity than CuI, and could be recycled at least eight times with almost constant activity.

中文翻译：

---

2-氨基吡啶，苯乙酮和苄基氰对3-氰基咪唑并[1,2- a ]吡啶的多相铜催化三组分反应

的2-氨基吡啶，苯乙酮和苄基氰的非均相三组分反应在NMP中在120℃下通过使用MCM-41锚定实现大号-脯氨酸-铜（I）配合物[MCM-41-大号-脯氨酸翠在空气中作为催化剂，以中等至高收率产生了多种3-氰基咪唑并[1,2- a ]吡啶。新的非均相铜催化剂显示出比CuI更高的催化活性，并且可以以几乎恒定的活性循环至少八次。