Abstract

We have successfully developed a novel cathodic cross-coupling reaction of aryl halides with arenes. Utilization of the cathodic single electron transfer (SET) mechanism for activation of aryl halides enables the cross-coupling reaction to proceed without the need for any transition metal catalysts or single electron donors in a mild condition. The SET from a cathode to an aryl halide initiates a radical chain by giving an anion radical of the aryl halide. The following propagation cycle also consists entirely of anion radical intermediates.

Highlights

  • Biaryl derivatives are considered to be useful organic compounds in industry and in the medical field [1]

  • Cathodic cross-coupling reaction of of aryl halides with arenes

  • Cross-coupling reaction of aryl halides with arenes

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Summary

Introduction

Biaryl derivatives are considered to be useful organic compounds in industry and in the medical field [1]. We envisioned that the cathodic reduction would be applicable for the activation of aryl halides in the initial step By this operation, an aromatic C,C cross-coupling reaction that requires neither transition metal catalyst nor single electron donor would be developed. We wish to report the realization of cathodic cross-coupling reactions of aryl halides with arenes via a single transfer (SET) pathway To overcome these electron drawbacks, we envisioned that the cathodic reduction would be applicable for (1a) and benzonitrile (2a) as in a model arylstep. By and this arene, operation, an aromatic cross-coupling substrates, werequires assumed the reaction mechanism for the nor cathodic cross-coupling as shown reaction that neither transition metal catalyst singlearomatic electronC,C donor would be developed.

Discussion
Effect
Cathodic
IIII II
Materials
Linear Sweep Voltammetry Measurements
General Procedure for Interval-Electrolysis
Conclusions
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