Transition metal catalysed ipso-replacement reactions of heteroaromatic phenolic ethers by zinc and tin organometallic compounds
Abstract
Highly crystalline tetrazolyl or pseudo-saccharyl O-ethers of phenols provide good, selective leaving groups for nickel- and palladium-catalysed cross-coupling reactions with organo-zinc and -tin compounds to give a C–C bond in place of the original phenolic C–O bond.