Add time:08/24/2019         Source:sciencedirect.com

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.

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