Synthesis 2024; 56(09): 1393-1400
DOI: 10.1055/a-2240-5349
paper

Copper-Catalyzed Enantioselective Radical Esterification of Propargylic C–H Bonds

Jiajia Xi
a   College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350108, P. R. of China
b   Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
d   Fujian College, University of Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. of China
,
Xiaotao Zhu
b   Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
,
Hongli Bao
a   College of Chemistry and Materials Science, Fujian Normal University, Fuzhou, Fujian 350108, P. R. of China
b   Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. of China
c   University of Chinese Academy of Sciences, Beijing 100049, P. R. of China
d   Fujian College, University of Chinese Academy of Sciences, Fuzhou, Fujian 350002, P. R. of China
› Institutsangaben
This work was supported by the National Natural Science Foundation of China (22225107, 22301302, 22001251) and the China Postdoctoral Science Foundation (2023M733500, BX20230366).


Abstract

The copper-catalyzed enantioselective radical esterification of propargylic C–H bonds with tert-butyl peroxybenzoate (TBPB) as an oxidizing agent and an oxygenated nucleophile is reported. This variant of the Kharasch–Sosnovsky oxidation allows for the asymmetric esterification of open-chain carbon radicals without excessive amounts of alkyne substrates under mild reaction conditions, achieving a one-step conversion of simple alkynes into chiral propargylic esters.

Supporting Information



Publikationsverlauf

Eingereicht: 12. Dezember 2023

Angenommen nach Revision: 08. Januar 2024

Accepted Manuscript online:
08. Januar 2024

Artikel online veröffentlicht:
08. Februar 2024

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