Domino Reactions of Donor–Acceptor‐Substituted Cyclopropanes for the Synthesis of 3,3′‐Linked Oligopyrroles and Pyrrolo[3,2‐<i>e</i>]indoles

Abstract

Multiple displacement of oxygen: Electron-rich oligopyrroles and pyrrolo[3,2-e]indoles are generated by a domino process induced by donor-acceptor-substituted cyclopropanes. Up to seven molecules of water are eliminated, thus allowing the introduction of nitrogen and aromaticity.