期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 -, 期 -, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202309157
关键词
Decarboxylation; Electrochemistry; Olefination; Reaction Mechanisms; Synthetic Methods
This study presents a metal-free electrochemical decarboxylation method for the synthesis of olefins from alkyl carboxylic acids, providing a simpler and alternative approach for olefin synthesis. The method maintains the quality of the electrode surface and local pH through alternating polarity, allowing for chemoselective reactions on conventionally difficult substrates.
A mild, scalable (kg) metal-free electrochemical decarboxylation of alkyl carboxylic acids to olefins is disclosed. Numerous applications are presented wherein this transformation can simplify alkene synthesis and provide alternative synthetic access to valuable olefins from simple carboxylic acid feedstocks. This robust method relies on alternating polarity to maintain the quality of the electrode surface and local pH, providing a deeper understanding of the Hofer-Moest process with unprecedented chemoselectivity. The electrochemical conversion of unactivated carboxylic acids to olefins under alternating polarity is reported. By modulating electrode surface quality and local acidity, chemoselective Hofer-Moest reactivity is realized on conventionally difficult substrates, including primary and secondary unactivated carboxylic acids. This simple protocol is exceptionally scalable (1 kg) and cost-effective.**image
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