Facile Post-synthesis and Redox Behavior of π-Expanded Ferrocene and ansa-Ferrocene

A new π-extended ferrocene and a transannular ansa-ferrocene have been successfully synthesized by post-synthesis via one-pot reaction of a 1,1′-diborylferrocene with 1,8-dibromonaphthalene under Suzuki-Miyaura-Heck coupling conditions. Both compounds in the neutral and one-electron oxidized forms characterized by single-crystal X-ray analysis and UV-vis-NIR absorption revealed the structure-property relationships. A new π-extended ferrocene and a transannular ansa-ferrocene have been successfully made by post-synthesis via one-pot reaction of a 1,1′-diborylferrocene with 1,8-dibromonaphthalene under Suzuki-Miyaura-Heck coupling conditions. Both compounds in the neutral and one-electron oxidized forms characterized by single-crystal X-ray analysis and UV-vis-NIR absorption revealed structure-property relationships.