ChemInform Abstract: Carbene Complex‐Promoted Ring Expansion of Aziridine: Formation of the 1‐Azabicyclo(4.3.0) Ring System by a Double Alkyne and a Single Carbon Monoxide Insertion Reaction.

Abstract

AbstractThe chromium carbene complex (I) is coupled with the aziridine (II) to give the E‐ and Z‐isomers (III) and (IV) which react with diphenylacetylene (V), producing the heterocyclic chromium carbonyl complex (VI).