Palladium-catalysed cross-coupling reactions of aryl-, alkenyl- and alkynyl-iodonium salts and iodanes with terminal alkynes in aqueous medium
Abstract
The ligand-free Pd(OAc)2-catalysed coupling reaction of aryl-, alkenyl- and alkynyl-iodonium tetraflouroborate and iodanes with terminal alkynes proceeds readily in the presence of NaHCO2 in aqueous medium to afford the substituted alkynes in high yields under mild conditions.