Nucleophilic addition to vinylketene- and vinylketenimine (allenylideneamine)tricarbonyliron(0) complexes

Abstract

Nucleophiles add to C-1 of (vinylketene)tricarbonyliron(0) complexes to give β,γ-unsaturated carbonyl derivatives, whereas nucleophilic attack on a (vinylketenimine)tricarbonyliron(0) analogue occurs at C-2 and leads, after an oxidative work-up, to β,γ-unsaturated amides containing an a quaternary centre.