Journal
JOURNAL OF ORGANIC CHEMISTRY
Volume 81, Issue 16, Pages 7182-7190Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.joc.6b01060
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- CNRS
- UPMC
- IUF
- China Scholarship Council
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A new method for the arylative cyclization of o-alkynylphenols with aryldiazonium salts via dual photoredox/gold catalysis is described. The reaction proceeds smoothly at room temperature in the absence of base and/or additives and offers an efficient approach to benzofuran derivatives. The scope of the transformation is wide, and the limitations are discussed. The reaction is proposed to proceed through a photoredox-promoted generation of a vinylgold(III) intermediate that undergoes reductive elimination to provide the heterocyclic coupling adduct.
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