Efficient Synthesis of (E)-Vinylgermanes via Stille Cross-Coupling Reaction from l-Tributylstannyl-2-trialkyl(triphenyl)germylethylenes

摘要

The transfer of a beta-vinylgermyl synthon is easily achieved by Stille reaction using (E')-l-tributylstannyl-2-trialkyl(or triphenyl)germylethylenes. With this methodology good yields of (E)-aryl or heteroarylvinylgermanes, stereodefined germyldienoic acids, and germyl alpha,beta-enones are obtained from acid chlorides.