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. Author manuscript; available in PMC: 2023 Mar 17.
Published in final edited form as: Chem Rev. 2021 Nov 9;122(2):2487–2649. doi: 10.1021/acs.chemrev.1c00384

Scheme 28.

Scheme 28.

Selected mechanisms for amine α-cyanation discussed Scheme 27: (A) electrochemical amine oxidation to iminiums; (B) indirect electrochemical oxidation using an oxoammonium; (C) photoredox oxidation of amines to iminiums; (D,E) photoredox decarboxylation via SET from a carboxylate or PCET from carboxylic acid (F,G) direct and indirect HAT using benzophenone and phosphate derived radicals, respectively.