Activation of C–F bonds using Cp*2ZrH2: a diversity of mechanisms

Abstract

The activation of several types of carbon–fluorine bonds in alkanes, arenes and olefins, using the early transition metal complex Cp*₂ZrH₂, are described. Fluoroalkanes are reduced to alkanes. Alkyl and and even aryl adducts containing β-fluorines undergo β-fluorine elimination. Evidence is presented that α-fluorine elimination is also possible, and occurs in Cp*₂Zr(CF₃)H. The studies include mechanistic investigations, which show evidence for a variety of pathways depending on the specific substrate.