Phosphorus Trihalides in Reactions with 2-(Adamantan-1-yl)imidazo[1,2-a]pyridines

摘要

It was recently found [1,2] that the reaction of adamantane derivatives with phosphorus trichloride in sulfuric acid involves substitution of the leaving group either by a dichlorophosphoryl group or a chlorine atom,depending on the nature of substituents in the adamantane nucleus [1],whereas the reaction with phosphorus tribromide always leads to corresponding brominated adamantanes [2].