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2004
C-C bond formation
O 0282
Reaction of Aryl Di-, Tri-, or Tetrabromides with Arylboronic Acids or Alkenes
the Presence of a Palladium-Tetraphosphine Catalyst. — The use of
47- 045 in
Pd—Tedicyp catalytic complex is presented in the Heck or Suzuki cross- coupling of
polybromo(het)arenes. It is shown that the extent of these reactions is influenced by the
amount of catalyst used and by the reactivity of substrates [cf. 1,4-dibromobenzene (Ia)
vs. 1,2-dibromo analogue (VIII)]. In most cases, reaction conditions are found for the
complete substitution of all bromide atoms (to be continued). — (BERTHIOL, F.;
KONDOLFF, I.; DOUCET*, H.; SANTELLI, M.; J. Organomet. Chem. 689 (2004)
17, 2786-2792; Lab. Synth. Org., CNRS, Fac. Sci. St. Jerome, Univ. Aix-Marseille III,
F-13397 Marseille, Fr.; Eng.) — Mischke
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