Rhodium-Catalyzed Transannulation of 1,2,3-Triazoles to Polysubstituted Pyrroles

Rhodium-catalyzed transannulation of N-sulfonyl-1,2,3-triazoles with vinyl ether has been accomplished for the synthesis of various polysubstituted pyrroles. The present method allows the synthesis of mono-, di-, and trisubstituted pyrroles with appropriate substitutions. Furthermore, the developed methodology was applied in the formal synthesis of neolamellarin A, an antitumor agent.