Li YW, Lei J, Chen ZZ, Lv ML. Copper-catalyzed C2-selective alkynylation of chromones via 1,4-conjugate addition.
Mol Divers 2024;
28:125-131. [PMID:
36881209 DOI:
10.1007/s11030-023-10625-7]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2023] [Accepted: 02/18/2023] [Indexed: 03/08/2023]
Abstract
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 examples were obtained in one-pot procedure through 1,4-conjugate addition. This protocol features readily available feedstocks, easy operations, and moderate to good yields, which provides viable access to pharmacologically active C2-functionalized chromanones.
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