Xu Y, Zheng S, Li Y. Au(I) /Brønsted Acid Relay-Catalyzed Benzannulation Reaction of Alkynylbenzaldehydes and Styrenes for the Synthesis of Substituted Naphthalenes.
J Org Chem 2025;
90:4919-4925. [PMID:
40165630 DOI:
10.1021/acs.joc.4c03186]
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Abstract
We report herein an Au(I) /Brønsted acid relay-catalyzed tandem benzannulation reaction of alkynylbenzaldehydes and styrenes for the synthesis of substituted naphthalenes. This reaction sequence involves Au(I)-catalyzed alkyne cycloisomerization, oxa-[4 + 2]-cycloaddition, α-ketol rearrangement, and aromatization to access substituted naphthalenes in moderate-to-good yields. The resulting substituted naphthalenes are further subjected to Brønsted acid catalysis, promoting Friedel-Crafts reactions to form chrysene derivatives in excellent yields.
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