Harnessing phosphorus-centered radicals for the synthesis of cyclopenta[b]indole and pyrrolo[1,2-a]indole frameworks

We report herein a highly efficient and versatile method for synthesizing phosphorus-containing cyclopenta[b]indole and pyrrolo[1,2-a]indole derivatives through a cascade radical cyclization process. The method leverages phosphorus-centered radicals to construct these polycyclic structures with high regioselectivity.