Journal
ORGANIC LETTERS
Volume 15, Issue 4, Pages 928-931Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ol4000857
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Funding
- program Sustainable Chemical Synthesis (SusChemSys)
- European Regional Development Fund (ERDF)
- state of North Rhine-Westphalia, Germany
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Cross dehydrogenative coupling reactions occurring via base-promoted homolytic aromatic substitutions (BHASs) are reported. Fluorenones and xanthones are readily prepared via CDC starting with readily available ortho-formyl biphenyls and ortho-formyl biphenylethers, respectively. The commercially available and cheap tBuOOH is used as an oxidant. Initiation of the radical chain reaction Is best achieved with small amounts of FeCp2 (0.1 or 1 mol %).
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