Abstract
Main observation and conclusionA simple one pot synthesis of polysubstituted pyrroles via ketenimine formation/Ag(I)‐catalyzed alkyne cycloisomerisation has been developed. The easily accessible phosphorane ylide derivatives reacted with isocyanates, producing highly active ketenimines that were then treated with amines, which afforded substituted pyrroles by a 5‐exo‐dig cyclization/isomerization in the presence of a Ag(I) catalyst in good overall yields.
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