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. Author manuscript; available in PMC: 2021 May 4.
Published in final edited form as: Angew Chem Int Ed Engl. 2020 Mar 17;59(19):7425–7429. doi: 10.1002/anie.202000684

Figure 2:

Figure 2:

Investigation of the mechanism of an organic photoredox C-H alkylation. I: Current mechanistic proposal. II: Deuterium labeling studies with d3-mesitylene and d1-TFE. III: Reaction energy diagram for an arene cation radical cyclopropanation. IV: Initial mechanistic proposal involving a 1,2-hydride shift. V: Thermodynamics of the norcaradiene and cycloheptatriene equilibrium. VI: Evidence for a norcaradiene intermediate.