Cu(II)-catalyzed synthesis of 3-functionalized benzofurans sequential nucleophilic cyclization and C-C bond activation.

Chem Commun (Camb)

Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, China.

Published: September 2025


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Article Abstract

A domino Cu-catalyzed nucleophilic cyclization and C-C bond activation to access various 3-acylated benzofurans has been developed. The generated benzofuranylcopper intermediate was coupled with cyclopropenone, wherein the ring-opening of cyclopropenone with phenol was effectively suppressed. This strategy features excellent substrate scope, good functional group tolerance, and high atomic economy.

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http://dx.doi.org/10.1039/d5cc01764eDOI Listing

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