Heterocyclization by catalytic carbonickelation of alkynes: a domino sequence involving vinylnickels

Abstract

Reaction of Ni(0) in the presence of iodoarylethers leads, after syn intramolecular carbonickelation of the triple bond, to nucleophilic vinylnickels which can be trapped, in a tandem process, by various electrophiles introduced at the onset of the reaction.