Zirconium-Mediated Cross-Coupling of Terminal Alkynes and Vinyl Bromides: Selective Synthesis of Cyclobutene and 1,3-Diene Derivatives
作者:José Barluenga、Félix Rodríguez、Lucía Álvarez-Rodrigo、Francisco J. Fañanás
DOI:10.1002/chem.200305337
日期:2004.1.5
diastereoselective synthesis of 1,3-butadiene or cyclobutene derivatives by a zirconium-mediated reaction of alkenyllithium compounds and vinylbromides is reported. The key steps involve the generation of zirconocene-alkyne complexes from haloalkenes and subsequent coupling with alkenyl bromides. Thus, formally the process supposes the cross-coupling reaction between a terminalalkyne and an alkenyl bromide. Moreover