期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 58, 期 48, 页码 17226-17230出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201909082
关键词
1,3-diynes; electrochemistry; gold; oxidative coupling; redox catalysis
资金
- NSF [CHE-1665122, CHE-1915878]
- NIH [1R01GM120240-01]
Due to the high oxidation potential between Au-I and Au-III, gold redox catalysis requires at least stoichiometric amounts of a strong oxidant. We herein report the first example of an electrochemical approach in promoting gold-catalyzed oxidative coupling of terminal alkynes. Oxidation of Au-I to Au-III was successfully achieved through anode oxidation, which enabled facile access to either symmetrical or unsymmetrical conjugated diynes through homo-coupling or cross-coupling. This report extends the reaction scope of this transformation to substrates that are not compatible with strong chemical oxidants and potentiates the versatility of gold redox chemistry through the utilization of electrochemical oxidative conditions.
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