The effect of the oxophilic Tb(III) cation on CON bond homolysis in alkoxyamines

Recently, we reported on the activation of the CON bond homolysis in alkoxyamines R1R2NOR3 using the coordination of the alkyl fragment R3 with metal cations Cu(II) and Zn(II). Here, we report the selective coordination of the diethylphosphoryl group carried by the nitroxyl fragment by the oxophilic metal cation Tb(III). Coordination on the nitroxyl fragment afford a slight 2-fold decrease in the CON bond homolysis rate constant kd.