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Synfacts 2009(5): 0514-0514  
DOI: 10.1055/s-0029-1216598
Metal-Catalyzed Asymmetric Synthesis and Stereoselective Reactions
© Georg Thieme Verlag Stuttgart ˙ New York

Interception of Benzopyrilium Intermediates Yielding Oxacyclic Compounds

Contributor(s): Mark Lautens, David A. Candito
Y.-C. Hsu, C.-M. Ting, R.-S. Liu*
National Tsing-Hua University, Hsinchu, Taiwan
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Publikationsdatum:
22. April 2009 (online)

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Significance

Metal-catalyzed cycloadditions are powerful tools in organic synthesis (M. Lautens, W. Klute, W. Tam Chem. Rev. 1996, 96, 49). The authors report the intramolecular trapping of metal-benzopyrilium intermediates which result from platinum-catalyzed [4+2] cycloaddition of 2-alkynylbenzaldehydes with olefins.