The Synthesis of Fused Ring Systems Utilising the Intramolecular Addition of Alkenyl Radicals to Furans

Abstract

Abstract Studies on the intramolecular addition of alkenyl radicals to furans are reported. The alkenyl radicals undergo a 5‐exo‐trig addition to furans and the resulting spirocyclic intermediate can fragment to give substituted cyclopentene rings. (© Wiley‐VCH Verlag GmbH & Co. KGaA, 69451 Weinheim, Germany, 2003)