Visible‐Light‐Enabled Photosensitizer‐ and Additive‐Free Decarboxylative Coupling Cyclization of Enaminone withN‐Arylglycine for 3‐Aminoalkyl Chromones

Abstract An photosensitizer‐ and additive‐free, visible‐light‐induced decarboxylative aminoalkylation/C−O coupling cyclization of enaminones with N ‐arylglycine for the synthesis of 3‐aminoalkyl chromones has been achieved. This synthetic method features good functional‐group tolerance, mild reaction conditions and no request of photocatalyst or additive, thus making this protocol more practical and sustainable. magnified image