One-Pot Silver-Catalyzed and PIDA-Mediated Sequential Reactions: Synthesis of Polysubstituted Pyrroles Directly from Alkynoates and Amines

The addition/oxidative cyclization of alkynes with amines in the presence of AgBF4 catalyst and PIDA oxidant leads to polysubstituted pyrroles. The reaction corresponds to the construction of a pyrrole fragment, which also provides a new way to the formation of C-C bonds.