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    Copper-catalyzed C2-selective alkynylation of chromones via 1,4-conjugate addition

    Copper-catalyzed selective alkynylation with N-propargyl carboxamides as nucleophiles has been successfully developed for the synthesis of C2-functionalized chromanones. Under optimized reaction conditions, 21 ex...

    Yan-Wu Li, Jie Lei, Zhong-Zhu Chen, Meng-Lan Lv in Molecular Diversity (2024)