ChemInform Abstract: Novel Synthesis of 3H‐Pyrroles, and Novel Intermediates in the Paal‐ Knorr 1H‐Pyrrole Synthesis: 2‐Hydroxy‐3,4‐dihydro‐2H‐pyrroles from 1,4‐Diketones and Liquid Ammonia.

Abstract

Treatment of the carbonyl compounds (I), (IV), and (VII) with liquid ammonia yields the hydroxydihydropyrroles (II), (III), (V), (VIII), and (IX) and the pyrroles (VI) and (X).