Cu (I)-Catalyzed Synthesis of Polysubstituted Pyrroles from Dialkyl Ethylenedicarboxylates and β-Enamino Ketones or Esters in the Presence of O<sub>2</sub>
A straightforward method for the synthesis of polysubstituted pyrroles was achieved easily from oxidative cyclization of β-enaminoketones or esters and alkynoates catalyzed by CuI in the presence of O2.