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  • Title: One-pot multi-component route to propargylamines using zinc oxide under solvent-free conditions.
    Author: Hosseini-Sarvari M, Moeini F.
    Journal: Comb Chem High Throughput Screen; 2014; 17(5):439-49. PubMed ID: 24344992.
    Abstract:
    In this paper, commercially available ZnO was found to be a highly effective catalyst for three-component coupling reactions of alkynes, aldehydes/or ketone and amines (A(3)-coupling) via C-H activation. The reactions could be applied to both aromatic and aliphatic aldehydes. Nearly quantitative yields of the desired products were obtained in most cases. No co-catalyst or activator is required, and water is the only by-product in the reactions. Heterogeneous nature of the catalyst made it reusable for further chemical reactions.
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