Abstract
AbstractIn this paper, nanorod CeO2 supports were prepared by hydrothermal method using Ce(NO3)3 ⋅ 6H2O as raw material. CuOx/CeO2‐r materials were prepared by calcination using Cu salt‐loaded CeO2‐r supports as raw materials. The three‐component coupling reaction of phenylacetylene, amine and aldehyde was successfully catalyzed by CuOx/CeO2‐r material as a non‐homogeneous catalyst, which showed good catalytic activity. Furthermore, a series of indolizine derivatives can be obtained in higher isolated yields by replacing benzaldehyde with pyridinecarbaldehyde and catalyzing the three‐component synthesis with the same CuOx/CeO2‐r material. The synthesis mechanisms of propargylamine and indolizine were discussed. It is worth noting that the CuOx/CeO2‐r material system is provided for two three‐component reactions, and has the advantages of less catalyst dosage, short reaction time, simple post‐treatment, and a wide range of substrates.
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