Front Cover: Access to Indole‐Fused Benzannulated Medium‐Sized Rings through a Gold(I)‐Catalyzed Cascade Cyclization of Azido‐Alkynes (Chem. Eur. J. 51/2021)

Abstract

In this image, a golden compass guides the adventurer's way in an unknown chemical space. The compass leads the structures with one- and two-dimensional content towards those with an increased three-dimensional character. These three-dimensional compounds rise towards uncharted chemical space leaving the flatland behind, based on the cascade cyclization of alkynyl azides generating indole fused medium-sized rings. More information can be found in the Full Paper by H. Ohno et al. (DOI: 10.1002/chem.202101824).