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2005
Polyphenylalkene derivatives
Q 0740
Synthesis of Highly Substituted 1,3-Butadienes by Palladium-Catalyzed Arylation
Internal Alkynes. — Multiarylated 1,3-butadienes are synthesized by coupling
02- 087 of
reactions of aryl boronic acids with internal alkynes in the presence of a palladium catalyst and a silver salt. The reactions result in the formation of 2:2 coupling products.
Similar reaction in the presence of iodobenzene results in the selective formation of
1:2:1 coupling products [cf. (VIII)]. — (SATOH, T.; OGINO, S.; MIURA*, M.;
NOMURA, M.; Angew. Chem., Int. Ed. 43 (2004) 38, 5063-5065; Dep. Appl. Chem.,
Fac. Eng., Osaka Univ., Suita, Osaka 565, Japan; Eng.) — S. Adam
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