The oxidative reaction of fluoro-olefins with tricarbonyl(cyclobutadiene)-iron complexes

Abstract

Tetrafluoroethylene and hexafluoropropene react on irradiation with Fe(π-C₄R₄)(CO)₃(R = H or Me) to give π-cyclobutenyl complexes, in which the fluorocarbon links the metal and the C₄ ring. A similar reaction occurs with hexafluorobuta-1,3-diene, but a 1,3-fluorine shift also takes place. Hexafluoroacetone reacts with Fe(π-C₄Me₄)-(CO)₃ to give [graphic omitted](CO)₂(π-C₄Me₄), which reacts with phosphites or phosphines to give π-cyclobutenyl complexes.