The Synthesis and Application of 2-Cyano and -Ester Containing Anilines: Selective Copper-Catalyzed Reductive Amination, N-Benz­ylation, and Cyclization Reactions

Abstract

A convenient and practical pathway to 2-cyano and 2-ester anilines is described via efficient and selective copper(II)-catalyzed reductive amination via hydrosilylation process. Both 2-cyano and 2-ester anilines were successfully synthesized with good functional group tolerance and high selectivity. The application of the 2-cyano and -iodine containing anilines was developed in the synthesis of indoloindole derivatives via CuSO₄-catalyzed N-benzylation and cyclization reaction in ‘one pot’. More interestingly, the photophysical property investigations of these 2-cyano and 2-ester containing anilines exhibit excellent fluorescent properties, which have great potential application in the development of interesting near-ultraviolet optical devices in the near future.

Key words

copper catalysis - hydrosilane - reductive amination - amines - indoloindole

Publikationsverlauf

Eingereicht: 25. April 2022

Angenommen nach Revision: 02. Mai 2022

Accepted Manuscript online:
02. Mai 2022

Artikel online veröffentlicht:
14. Juni 2022

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