CuI-Catalyzed Domino Process to 2,3-Disubstituted Benzofurans from 1-Bromo-2-Iodobenzenes and β-Keto Esters
The Journal of Organic Chemistry2007Vol. 72(14), pp. 5337–5341
Citations Over TimeTop 10% of 2007 papers
Abstract
CuI-catalyzed coupling of 1-bromo-2-iodobenzenes with beta-keto esters in THF at 100 degrees C leads to 2,3-disubstituted benzofurans. This domino transformation involves an intermolecular C-C bond formation and a subsequent intramolecular C-O bond formation process. Benzofurans with different substituents at the 5- and 6-position are accessible by employing the corresponding 1-bromo-2-iodobenzenes.
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