Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 53, Issue 26, Pages 6805-6809Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201404155
Keywords
benzofurans; dearomatization; domino reactions; multicomponent reactions; phenols
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Funding
- National Science Foundation of China [21332009, 21102019]
- Shanghai Science and Technology Committee [13431900103]
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A method to directly convert 2-alkynylphenols to 3,4-difunctionalized benzofurans and polycyclic benzofurans was developed. This protocol involves a hypervalent-iodine-mediated oxidative dearomatization to break the aromaticity of 2-alkynylphenols, and a palladium-catalyzed domino reaction to install two functional groups at the C3 and the C4 positions and restore the aromaticity of benzofurans.
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