Photosynthesis of 3-Alkylated Coumarins from Carboxylic Acids Catalyzed by a Na<sub>2</sub>S-Based Electron Donor–Acceptor Complex
Hai‐Yang Song, Meiyi Liu, Jing Huang, Dan Wang, Jun Jiang, Jinyang Chen, Tianbao Yang, Wei‐Min He
Abstract
A simple and practical electron donor–acceptor (EDA) strategy to synthesize various 3-alkylated coumarins from easily available coumarins and naturally abundant carboxylic acids under photocatalyst-, oxidant-, and additive-free and mild conditions is reported. Using Na 2 S as the catalytic electron donor, a series of primary, secondary, and tertiary carbon radicals can be efficiently generated, and the EDA complex can be regenerated without an alkaline additive.
Topics & Concepts
ChemistryCatalysisElectron acceptorAlkylationRadicalAcceptorPrimary (astronomy)PhotochemistryElectron donorCarboxylic acidOrganic chemistryCombinatorial chemistryAstronomyPhysicsCondensed matter physicsRadical Photochemical ReactionsSulfur-Based Synthesis TechniquesOxidative Organic Chemistry Reactions