The transfer of a β-vinylgermyl synthon is easily achieved
by Stille reaction using (E)-1-tributylstannyl-2-trialkyl(or triphenyl)germylethylenes.
With this methodology good yields of (E)-aryl
or heteroarylvinylgermanes, stereodefined germyldienoic acids, and
germyl α,β-enones are obtained from acid chlorides.
coupling reactions - organogermanium compounds - palladium
catalyst