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2005
Polyphenylalkyne derivatives
Q 0750
Catalytic Efficiency of a New Tridentate Ferrocenyl Phosphine Auxiliary: Sonogashira Cross-Coupling Reactions of Alkynes with Aryl Bromides and Chlorides
02- 088 at
Low Catalyst Loadings of 10-1 to 10-4 mol %. — The first example of Sonogashira cross-coupling reaction of various aryl halides and alkynes using a ferrocenyl triphosphine is described. The aryl alkynylation is possible at 10-1 to 10-4 mol % catalyst
loadings with TONs up to 250 000. Some reactions with (IIa) are also successful without adding CuI. — (HIERSO*, J.-C.; FIHRI, A.; AMARDEIL, R.; MEUNIER, P.;
DOUCET, H.; SANTELLI, M.; IVANOV, V. V.; Org. Lett. 6 (2004) 20, 3473-3476;
Lab. Synth. Electrosynth. Organomet., Fac. Sci., CNRS, Univ. Bourgogne,
F-21078 Dijon, Fr.; Eng.) — Steudel
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