Frontispiece: Organocatalytic Enantioselective Aza‐Friedel–Crafts Reaction of Cyclic Ketimines with Pyrroles using Imidazolinephosphoric Acid Catalysts

Abstract

Chiral Phosphoric Acid Catalysts Organocatalytic enantioselective aza‐Friedel–Crafts reactions of cyclic ketimines with pyrroles or indole were catalyzed by imidazolinephosphoric acid catalysts. The reaction was applied to various 3H‐indol‐3‐ones to afford products in excellent yields and enantioselectivities. The graphics shows origami cranes that fly with expanded wings. The bis(imidazoline)/phosphoric acid catalysts also expand their wings like the origami cranes, and form a well‐fitting asymmetric space for substrate binding to let the reaction “fly”. The full story can be found in the Communication by S. Nakamura and colleagues on page 9478 ff.