Design and Synthesis of Fluoro‐containing Hypervalent Iodane (III) Reagents for Visible‐light‐triggered Cyclization of Alkynoates to 3‐Fluoroalkylated Coumarins

Abstract A series of novel fluoro‐containing hypervalent iodane (III) reagents was designed and synthesized. By employing these novel hypervalent iodane (III) reagents, an efficient visible‐light‐triggered radical cyclization of alkynoates to diversely 3‐fluoroalkylated coumarins was developed under metal free condition. It provided an alternative and environmental friendly approach for the installation of 3‐fluoroalkyl motif into synthetically valuable building block coumarins.