Photoinduced Metal‐Free Decarboxylative Fluoroalkylation of Alkenes for the Synthesis of N‐Arylbutanamides and Oxindoles

The visible light‐induced decarboxylative cascade reaction of fluoroalkyl carboxylic acids has been achieved for the efficient synthesis of fluorinated compounds. However, most of the transformations rely on noble iridium metal complex. Herein, a visible light‐induced metal‐free decarboxylative cascade reaction of fluoroalkyl carboxylic acids has been realized. This protocol features simple operation, transition metal free, and good functional group tolerance. A new photoinduced decarboxylative difluoroalkylation‐carbocyclization reaction of alkenes for the divergent construction of CF2‐containing oxindoles and N‐arylbutanamides was established. This photocatalysis reaction features simple conditions, transition metal photocatalysts free.