Journal
ORGANIC LETTERS
Volume 17, Issue 23, Pages 5926-5929Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.orglett.5b03160
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Funding
- National Natural Science Foundation of China [21125210, 21421091, 21372244, 21572256]
- Chinese Academy of Science
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A new and convenient strategy for the synthesis of functionalized tropone derivatives based on the gold-catalyzed oxidative ring expansion of alkynyl quinols has been developed. The reaction proceeds via gold-catalyzed highly regioselective oxidation followed by 1,2-migration of a vinyl or phenyl group. Extension of this chemistry allows ready access to various seven- or six-membered ring systems such as benzotropones, benzooxepines, phenanthrenes, and quinolin-2(1H)-ones.
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