Palladium−Imidazolium Carbene Catalyzed Aryl, Vinyl, and Alkyl Suzuki−Miyaura Cross Coupling
Organic Letters2001Vol. 3(23), pp. 3761–3764
Citations Over TimeTop 10% of 2001 papers
Abstract
[reaction--see text] N,N-Bis-(2,6-diisopropylphenyl)dihydroimidazolium chloride with palladium(II) acetate (2 mol %) was used as catalyst, without added base, to efficiently cross couple aryl, vinyl, and alkyl boronates and boronic acids with aryldiazonium tetrafluoroborate substrates. The reactions were performed at 0 degrees C or rt, giving product in 2 to 4 h with 80 to 90% yields for isolated materials. Diazonium ions, formed in situ, also cross couple under these conditions.
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