Cover Feature: Photoredox/Pyridine N ‐Oxide Catalyzed Acyl Radical Generation From Aldehydes for Divergent Synthesis of Pyrroles and Carbocyclic Ketones (Adv. Synth. Catal. 20/2026)

Hydrogen-Atom Transfer Under blue light, photoredox catalysis and pyridine N-oxide-mediated hydrogen-atom transfer convert readily available aldehydes into acyl radicals. Addition of these radicals to alkynes opens three aldehyde-dependent pathways to densely functionalized pyrroles, cyclopentanones, or indanones. The cover illustrates this divergent catalytic platform, which transforms simple feedstocks into valuable heterocyclic and carbocyclic molecular scaffolds. More in the Research Article (10.1002/adsc.70748), Yongming Deng and co-workers.