Cyclometallation reactions. Part 11. Reactions of tricarbonyl[2-(phenylazo)phenyl-C1N′]cobalt and related complexes with hexafluorobut-2-yne

Abstract

Reactions between hexafluorobut-2-yne and tricarbonyl[2-(phenylazo)phenyl-C¹N′]cobalt and related complexes give substituted quinoline-2-ones via an isolable organometallic intermediate. The latter is formed by formal insertion of CO and the alkyne into the Co-C σ bond of the initial cobalt complex. Some other reactions of the organometallic intermediate are also described.