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Synfacts 2008(9): 0942-0942
DOI: 10.1055/s-2008-1078634
DOI: 10.1055/s-2008-1078634
Metal-Catalyzed Asymmetric Synthesis and Stereoselective Reactions
© Georg Thieme Verlag
Stuttgart ˙ New York
Palladium-Catalyzed Asymmetric Decarboxylative [4+2] Cycloaddition
C. Wang, J. A. Tunge*
University of Kansas, Lawrence, USA
Weitere Informationen
Publikationsverlauf
Publikationsdatum:
22. August 2008 (online)
Significance
The authors describe an asymmetric palladium-catalyzed decarboxylative [4+2] cycloaddition of benzoxazinanones and benzylidene malononitriles. The scope is broad with good yields, enantioselectivities, and diastereoselectivities. If the malononitrile is too electron-rich, intramolecular cyclization of the decarboxylated benzoxazinanones forming dihydroquinolines is favored.