Efficient functionalization of olefins by arylsilanes catalyzed by palladium anionic complexes

- Excellent catalytic activity of [CA]2[PdCl4] and [CA]2[Pd2Cl6] complexes in functionalization of olefins by arylsilanes.
- Efficient cross-coupling of olefins with triphenylsilanes in Pd/Cu(OAc)2/TBAF system.
- Efficient synthesis of 1,4-diaryl-1,3-butadienes in cross-coupling reaction of vinylsilanes with olefins.

The coupling of organosilanes and different olefins was performed efficiently in the presence of anionic complexes, [CA]2[PdX4] and [CA]2[Pd2X6], where CA = imidazolium or pyridinium cation. The reaction proceeds according to a Pd(II)-mediated pathway, and Cu(OAc)2 acts as the re-oxidant of Pd(0) formed during the catalytic process. High product yields were obtained for differently substituted olefins at 80 °C in 4 h. Styrylsilanes reacted in the same conditions giving unsymmetrical 1,3-dienes.

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