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Published on: March 4, 2021
Expeditive syntheses of functionalized pentahelicenes and NC-AFM on Ag(001)
Sarah Goretta1, Christelle Tasciotti, Simon Mathieu
1CNRS, Aix-Marseille University, CINAM UPR 3118, Avenue de Luminy, Case 913, 13288 Marseille Cedex 09, France.
Abstract:
One of the shortest and most efficient routes toward a series of functionalized pentahelicenes is reported. Benzylic (dibromo)methine coupling is an important entry into functional helicene chemistry. It allowed a mono- or a double functionalization by some metal-catalyzed Ar-C, Ar-S, Ar-CN, and Ar-I bond formations. Those functions offer new avenues for further applications. For instance, helicene (4) can be supported on a Ag(001) surface, which was characterized by high-resolution NC-AFM imaging.

