One-Pot Photocascade\nCatalysis: Access to Pyrrole\nDerivatives from <i>N</i>‑Arylglycines and Morita–Baylis–Hillman\n(MBH) Acetates

The step-economical synthesis of pyrrole derivatives\nhas posed\na challenge in the field of <i>N</i>-heterocyclic chemistry.\nA novel photocascade catalytic radical S<sub>N</sub>2′-type\nreaction/radical addition/annulation sequence of MBH acetates provides\na straightforward route to pyrrole derivatives by forming new C–C,\nC–N, and CC bonds in one pot, using <i>N</i>-arylglycines as the α-arylaminomethyl radical precursors for\ndouble insertion.