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A new and efficient one-pot synthesis of 1-Aminopyrrole derivatives by three-component reaction of dialkyl acetylenedicarboxylates, phenylhydrazine and arylglyoxals in the presence of triphenylphosphine is described. The reactions were performed in dichloromethane at room temperature and neutral conditions and afforded good yields of products.

A direct phosphine-mediated synthesis of polyfunctionalized 1-aminopyrroles from arylglyoxals, phenylhydrazine and acetylene diesters