Jiangjiang Li, Hongyan Zhou, Shouying Mei, Wantong Ma, Jingya Yang
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Photoredox-Catalyzed Radical Hydroalkylation of Azobenzenes with Alkylboronic Acids
The facile synthesis of N-alkyl-N,N′-diarylhydrazines has been a long-standing challenge. Here, we report a photoredox-catalyzed hydroalkylation of azobenzenes with alkylboronic acids, which successfully affords diverse N-alkyl-N,N′-diarylhydrazines. With an acridinium salt as the photocatalyst and upon visible light irradiation, a broad range of azobenzenes and alkylboronic acids reacted smoothly in the presence of a Lewis base at ambient temperature. Mechanistic studies revealed that the reaction proceeds via the generation of alkyl radicals and is facilitated by photoredox catalysis.
期刊介绍:
Organic Letters invites original reports of fundamental research in all branches of the theory and practice of organic, physical organic, organometallic,medicinal, and bioorganic chemistry. Organic Letters provides rapid disclosure of the key elements of significant studies that are of interest to a large portion of the organic community. In selecting manuscripts for publication, the Editors place emphasis on the originality, quality and wide interest of the work. Authors should provide enough background information to place the new disclosure in context and to justify the rapid publication format. Back-to-back Letters will be considered. Full details should be reserved for an Article, which should appear in due course.