Highly useful halogenated benzofurans and benzothiophenes are prepared from readily available gem-dibromoolefins using a mild, ligand-free copper catalyzed cross-coupling procedure.
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A tandem catalytic approach to methyleneindenes: mechanistic insights into gem-dibromoolefin reactivity.
Org Lett
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Davenport Laboratories, Department of Chemistry, University of Toronto, Toronto, Ontario, Canada M5S 3H6.
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Chem Commun (Camb)
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Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, CanadaM5S 3H6.
Highly useful halogenated benzofurans and benzothiophenes are prepared from readily available gem-dibromoolefins using a mild, ligand-free copper catalyzed cross-coupling procedure.
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