ChemInform Abstract: (Z)‐1,2‐Bis(ethoxydimethylsilyl)arylethenes as New Building Blocks for Organic Synthesis.

Abstract

Z)-1,2-Bis(ethoxydimethylsilyl)arylethenes as New Building Blocks for OrganicSynthesis. -Title compounds are stereoselectively isolated after palladium-catalyzed Heck coupling of (E)-bis(ethoxydimethylsilyl)ethene (II) with aryl iodides. Further hydrolysis of (IX) gives cyclic carbosiloxane (X) by intramolecular condensation. (Z)-Phenylethene (IVa) can be used for palladium-catalyzed Hiyama coupling reaction with phenyl iodide affording (E)-stilbene. Similarly, Hiyama coupling of (IVb) with diiodobenzene gives bis (methoxystyryl)benzene (VII). -(PAWLUC, P.; HRECZYCHO, G.; SZUDKOWSKA, J.; FRANCZYK, A.; MARCINIEC*, B.; Appl. Organomet. Chem. 24 (2010) 12, 853-857, http://dx.