OOrganic Letters4/24/2026Multicomponent Reactions in Open-Air Metal-Free Aqueous Visible-Light Catalysis: Radical–Polar Crossover toward γ-Lactams and γ-Aminobutyric AcidsGui-Ting Song·Chuan-Hua Qu·Ying Cheng·Shi-You Xue·Shanshan Chen·Wenkai Zong·Lin Zhu·Nian Wang·Li-Min Zhang·Yuan Zhou·Xue-Ying Yang·Lan-Bin He·J N Li·Liu Su-yaRead at Organic LettersTagsRadical Photochemical ReactionsOrganic Chemistry