Light-induced O-to-C 1,4-carbonyl transposition in salicylaldehyde derivatives: umpolung synthesis of 1,2-dicarbonyl compounds and beyond.

A novel photoinduced umpolung strategy enabling the synthesis of 1,2-dicarbonyl compounds from simple salicylaldehyde derivatives is described. This method provides α-ketoesters and α-ketoamides in excellent yields (79-90%) under mild photocatalyst-f…

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