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Tandem Reactions to Construct Heterocycles via Phosphine-Catalyzed Umpolung Addition and Intramolecular Conjugate Addition

✍ Scribed by Lu, Cheng; Lu, Xiyan

Book ID
118265069
Publisher
American Chemical Society
Year
2002
Tongue
English
Weight
67 KB
Volume
4
Category
Article
ISSN
1523-7060

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A regioselective divalent palladium-catalyzed tandem coupling reaction of allenoic acids with a,b-unsaturated carbonyl compounds was developed. The reaction involves intramolecular oxypalladation of an allene, followed by insertion of the a,b-unsaturated carbonyl compound and protonolysis of the C P