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Synfacts 2008(1): 0086-0086  
DOI: 10.1055/s-2007-991445
Metal-Mediated Synthesis
© Georg Thieme Verlag Stuttgart · New York

Palladium(II)-Catalyzed Annulation Reactions with o-Ester Containing Phenylboronic Acids

Contributor(s): Paul Knochel, Tobias Thaler
H. Tsukamoto*, Y. Kondo
Tohoku University, Sendai, Japan
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Publikationsverlauf

Publikationsdatum:
18. Dezember 2007 (online)

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Significance

The palladium(II)-catalyzed annulation of internal alkynes with ortho-ester-containing phenylboronic acids or esters offers a novel preparative access to 2,3-disubstituted indenones and 3,4-disubstituted 2-naphthols. These annulation reactions represent the first example of an intramolecular nucleophilic addition of an organopalladium(II) species to an alkoxycarbonyl group.