Pyrroles as Dienes in (4+3) Cycloadditions

Abstract

This short review summarizes the examples to date of successful (4+3) cycloadditions, including formal (4+3) cycloadditions, where pyrrole derivatives reacted as the diene component, to provide aza-bridged bicyclic and polycyclic adducts. 1 Introduction 2 Unsubstituted Pyrroles as Dienes in (4+3) Cycloadditions 3 C-Substituted Pyrroles as Dienes in (4+3) Cycloadditions 4 Intramolecular Pyrrole (4+3) Cycloadditions 5 Conclusions.