Base-Mediated Regiospecific Cascade Synthesis of N-(2-Pyridyl)pyrroles from N-Propargylic β-Enaminones
2016
A KOH-promoted regiospecific synthesis of polysubstituted N-(2-pyridyl)pyrroles under transition metal-free conditions has been developed. The pyrrole and pyridine rings were simultaneously installed from acyclic enaminone precursors under mild conditions and generated 1 equiv. of H2O as the sole byproduct. A series of polysubstituted N-(2-pyridyl)pyrroles were provided in up to 91% yield for 21 examples.
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