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. 2017 Dec 20;57(4):1068–1072. doi: 10.1002/anie.201711397

Figure 2.

Figure 2

Mechanistic proposal for the excited iminium ion/enamine cascade sequence. Central to this study is the ability of the excited iminium ion I*, acting as an oxidant, to drive the generation of intermediate IX, which displays radical and electrophilic behavior.