Electrochemical Synthesis of Hetero[7]helicenes Containing Pyrrole and Furan Rings via an Oxidative Heterocoupling and Dehydrative Cyclization Sequence

Mohamed S. H. Salem,Md. Imrul Khalid,Makoto Sako,Keigo Higashida, Charlie Lacroix,Masaru Kondo,Ryo Takishima,Taisei Taniguchi,Masahiro Miura,Giang Vo-Thanh,Hiroaki Sasai,Shinobu Takizawa

Advanced Synthesis & Catalysis（2023）

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摘要

The electrochemical synthesis of hetero[7]helicenes including pyrrole and furan rings has been established. A single electrochemical operation led to an oxidative heterocoupling and dehydrative cyclization sequence to afford oxaza[7]helicenes in 50-86% yields with 45-77% Faradic efficiencies. Their derivatization and chiroptical properties were also investigated.

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关键词

Helicenes,Electrochemical synthesis,Sequential reaction,Circularly polarized luminescence,mild reaction conditions

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