Journal
ORGANIC LETTERS
Volume 21, Issue 18, Pages 7635-7638Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.9b02942
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Funding
- Natural Science Foundation of China [21871115]
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A diphenyl-diselenide-mediated Claisen-type rearrangement/cyclization of propargylic aryl ethers under metal-free conditions is developed, affording various naphthofuran-2-carboxaldehydes in moderate to excellent yield. The broad substrate scope and excellent functional group compatibility suggest that it can be a straightforward and powerful method to access naphthofuran-2-carboxaldehydes in a highly regioselective manner. Moreover, this reaction can be scaled up to the gram scale.
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