Iron‐Catalyzed Synthesis of Pyrrole Derivatives and Related Five‐Membered Azacycles

Abstract

AbstractPyrrole derivatives and their related five‐membered azacycles are a class of important five‐membered aromatic nitrogen heterocyclic compounds, and their synthesis attracted much the attention of organic chemists. Iron catalysis has been widely used in various organic transformations owing to their excellent catalytic activity, environmentally benign character, easy accessibility and low price. Over the past decades, a variety of facile and effective syntheses of pyrrole derivatives and related five‐membered azacycles based on iron catalysis has been reported. In this Minireview, the development of the iron‐catalyzed synthesis of pyrrole derivatives and their related five membered azacycles is reported in a comprehensive way, covering the literature up to March 2021.