Fig. 1: Strategies for umpolung functionalization of carbonyl compounds via photocatalysis.
From: Visible-light photoredox-catalyzed umpolung carboxylation of carbonyl compounds with CO2
a Previous strategy: proton-coupled electron transfer via photocatalysis. b Our design: chlorosilane-coupled electron transfer via photocatalysis. c This work: a general umpolung carboxylation of carbonyls via photocatalysis. FG functional groups, PC photocatalyst.
