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Synlett 1995; 1995(4): 344-346
DOI: 10.1055/s-1995-4949
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New Catalyst Precursors Constituted of AsPh3 and Palladium on Carbon or Palladium(II) Acetate as Efficient Promoters of Selective Cross-Coupling Reactions between Functionalized Alkenyl Halides and Aryl- or 1-Alkynylzinc Chlorides

Renzo Rossi* , Fabio Bellina, Adriano Carpita, Raffaele Gori
  • *Dipartimento di Chimica e Chimica Industriale, Università di Pisa, Via Risorgimento 35, I-56126 Pisa, Italy
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Publication History

Publication Date:
31 December 2000 (online)

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The catalyst precursor consisting of a mixture of 10 % palladium on carbon and 3.9 equiv of AsPh3 as well as that obtained by treatment of Pd(OAc)2 with 4 equiv of AsPh3 in THF at 60 °C for 1 h have been proven to be suitable for promoting efficient cross-coupling reactions between aryl- or 1-alkynylzinc chlorides and alkenyl halides which contain an electron-withdrawing substituent linked to their carbon-carbon double bond. The activity of these catalyst precursors has been found to be comparable to that of the more expensive and air unstable Pd(PPh3)4.

palladium catalysts - cross-coupling reactions - organozinc derivatives

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