CO2 promoted photoredox/Ni-catalyzed semi-reduction of alkynes with H2O

Abstract

CO₂-promoted photoredox/Ni-catalyzed semi-reduction of alkynes to selectively synthesize alkenes has been realized by combining photocatalysis and transfer hydrogenation using water as a hydrogen source. A range of aryl alkynes and alkynyl silanes were capable of undergoing the conversion to afford the corresponding Z-alkenes as major products in high yields.