Quantitative Construction of C C Bond: Renaissance of Reductive Coupling of Benzotribromides Promoted by Cu/Polyamine

摘要

Quantitative construction of carbon-carbon triple bonds via reductive coupling of benzotribromides promoted by Cu/polyamine is realized under mild conditions. It provides a simple and efficient pathway to synthesize symmetrical diarylethynes using readily available and cheap reagents without acetylene group after simple workup.