Figure . Plausible reaction pathways based on the literature data. To have a deeper inside in the observed reactivity profiles, we have measured cyclic voltammograms for the trifluoroborates 2{1-10} (Figure ). The Ea,p values for non-fluorinated trifluoroborates 2{1}, 2{3}, 2{5}, and 2{8} (0.85-1.12 V) are close to those previously reported for analogous cycloalkyl trifluoroborates. At the same time, gem-difluorinated compounds 2{2}, 2{4}, 2{6}, 2{7}, 2{9}, and 2{10} demonstrated significantly higher oxidation potentials (1.03-1.67 V) as compared to their nonfluorinated counterparts. This effect might be partially responsible for lower efficiency of some gemdifluorinated cycloalkyl building blocks as the radical sources in the Minisci reaction. Nevertheless, other factors (e. g., radical nucleophilicity ) are likely important since there is no direct correlation between Ea,p and the reaction outcome. It should also be mentioned, that the redox-potentials, measured by CVA, are the potentials of heterogeneous electron transfer involving solid electrode, while radicals generation under Ag-catalyzed oxidation are homogeneous reactions. Thus, 4,4-difluorocyclobutyl derivative 2{2} has the highest oxidation potential (1.67 V), but the corresponding average product yield is not particularly low. Also, 4,4-difluorinated building blocks 2{7} and 2{10} demonstrate even slightly better performance as compared to non-fluorinated counterparts 2{5} and 2{8}, respectively, while the corresponding Ea,p values are considerably higher.