The reaction of (η5-cyclopentadienyl)dicarbonyliron(2-thienoyl) with acetylenes; a mechanistic study using proton nuclear magnetic resonance, and application in synthesis

1990/11/01 by Ian R. Butler
Chemistry · Engineering · #Asymmetric Hydrogenation and Catalysis #Surface Chemistry and Catalysis #Synthesis and Characterization of Pyrroles

paper · doi:10.1139/v90-304

openalex publication_date 1990/11/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/25

Abstract

The thermal reactions of dicarbonyl-η 5 -cyclopentadienyl(2-thienoyl)iron with a series of substituted acetylenes to give indenones and cyclopentathiophenones have been reinvestigated. The results obtained support a reaction mechanism involving initial acetylene insertion followed by that of carbon monoxide, in contradiction to the previously reported results. The reaction products were identified and characterized primarily using 2D 1 H nmr spectroscopy. Keywords: acetylene, carbon monoxide, iron, indenone, mechanism, thienyl.

Related

• A Reaction Pathway of [Fe(CO)5] with Alkynes via Ferrabicyclobutenones
• Molecular-level insight into the multiple mechanistic pathways in iron-catalysed alkene dimerisation
• Elektrocyclischer Ringschluss als Nebenreaktion bei einer Wolff‐Kishner‐Reduktion. Über Steroide, 227. Mitteilung
• Diiron(I) Bis(cyclopentadienyl) Complexes with Bridging Iminium Ligands: From Foundational Organometallic Chemistry to Unique Reactivity and Biological Potential
• Iron( iv ) alkyl complexes: electronic structure contributions to Fe–C bond homolysis and migration reactions that form N–C bonds from N 2