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Palladium-imidazolium carbene catalyzed Mizoroki-Heck coupling with aryl diazonium ions
Merritt B Andrus1, Chun Song, Jiuqing Zhang
1Brigham Young University, Department of Chemistry and Biochemistry, C100 BNSN, Provo, Utah 84602, USA. mbandrus@chemdept.byu.edu
Organic Letters
|June 7, 2002
Abstract:
[reaction: see text] Catalyst formed from N,N-bis(2,6-diisopropylphenyl)dihydroimidazolium chloride and palladium(II) acetate (2 mol %) was used, without added base, to efficiently produce Heck coupled products with olefins and aryl diazonium tetrafluoroborate substrates. The reactions were performed at room temperature, giving product in 2-4 h with 80-90% yields for isolated materials. Diazonium ions, formed in situ directly from anilines, also couple under these conditions.