Semiheterogeneous\nPhotoredox Catalysis: Synthesis\nof 3‑Sulfonylquinolines via Radical Multicomponent Cascade\nAnnulation

An efficient photocatalytic protocol combining heterogeneous\nsemiconductors\nas photocatalysts and NHPI as a redox reagent was disclosed. Under\nthis protocol, 3-sulfonylquinolines were formed in up to 92% yield\nvia a multicomponent radical cascade annulation. Good substituent\ntolerance and gram-scale reaction showed the potential in fine chemicals\nmodification and pharmaceutical synthesis.