Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 134, Issue 14, Pages 6124-6127Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja301588z
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- JSPS [21225005]
- Grants-in-Aid for Scientific Research [21225005] Funding Source: KAKEN
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Alkynyl aryl ethers react with internal alkynes through selective ortho C-H activation by a palladium(0) catalyst to give substituted 2-methylidene-2H-chromenes. The alkynoxy group acts as a directing group to promote ortho C-H functionalization. Deuterium-labeling experiments indicated that the arylpalladium hydride complex is a key intermediate via oxidative addition. Various functional groups tolerate the present transformation to give the corresponding products.
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