Synlett
DOI: 10.1055/a-2523-4762
synpacts

Visible-Light-Driven Thiolate-Catalyzed Carboxylation of C(sp2)–H Bonds in Azines with Carbon Dioxide

Yuan-Xu Jiang
a   Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. of China
,
Li-Li Liao
b   West China School of Public Health and West China Fourth Hospital, Sichuan University, Chengdu 610041, P. R. of China
,
Jian-Heng Ye
a   Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. of China
,
Da-Gang Yu
a   Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. of China
› Author Affiliations
Financial support was provided by the National Natural Science Foundation of China (22225106, 22101191, 22201027), Fundamental Research Funds from Sichuan University (2020SCUNL102), the China Scholarship Council (202206240054) and the Fundamental Research Funds for the Central Universities.


Abstract

Catalytic carboxylation of C–H bonds with CO2 represents an efficient strategy to synthesize highly valuable carboxylic acids from simple substrates, featuring high atom, step, and redox economies. Recently, our group was successful in developing a visible-light-driven thiolate-catalyzed carboxylation of C(sp2)–H bonds in azines with CO2. This strategy provides facile access to a range of valuable N-heteroarene carboxylic acids from readily available azines. Furthermore, the synthetic potential of this approach has been demonstrated through the synthesis of bioactive molecules and the modification of commonly used nitrogen ligands. Mechanistic studies suggest that the formation of an electron donor–acceptor complex between the thiolate and azine is a crucial factor in the activation of the azine.



Publication History

Received: 18 December 2024

Accepted after revision: 23 January 2025

Accepted Manuscript online:
23 January 2025

Article published online:
07 March 2025

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