Redox activated amines in the organophotoinduced alkylation of coumarins?

Organic & Biomolecular Chemistry Pub Date: 2022-07-07 DOI: 10.1039/D2OB00943A

Abstract

The coumarin core represents the quintessential scaffold of many natural products. While C-3 alkylation is easily achievable, effective greener strategies for C-4 alkylation have been less forthcoming. Herein, we report a metal-free photoinduced deaminative strategy for C-4 alkylation of coumarins using redox activated secondary and benzylic amine derived Katritzky pyridinium salts.

Graphical abstract: Redox activated amines in the organophotoinduced alkylation of coumarins
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