Synthesis 2022; 54(16): 3631-3641
DOI: 10.1055/a-1801-3656
paper

Palladium-Catalyzed Three-Component 1,4-Carboarylation of 1,3-Enynes with Malonic Esters and Aryl Iodides

Jingjing Bao
a   College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. of China
b   Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. of China
,
Rongbiao Wei
a   College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. of China
b   Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. of China
,
Yajun Li
b   Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. of China
,
b   Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, P. R. of China
c   University of Chinese Academy of Sciences, Beijing 100049, P. R. of China
› Author Affiliations
This work was supported by the National Natural Science Foundation of China (NSFC) (22001251, 21871258, 21922112), the National Key Research and Development Program of China (2017YFA0700103), and the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB20000000).


Abstract

Ionic 1,4-difunctionalization of 1,3-enynes has often been conducted with strong nucleophiles or 1,3-enynes that are activated by an electron-withdrawing group. In this work, a palladium-catalyzed three-component ionic 1,4-carboarylation of 1,3-enynes is reported with arylated 1,3-enynes as the substrates. This method can afford various tetrasubstituted allenes with different functionalities. The palladium salt might play a key dual role in the reaction: as the catalyst to catalyze the cross-coupling reaction and as a Lewis acid to facilitate the nucleophilic attack. The synthetic value of this method is demonstrated by the further cyclization, decoration, and hydrolysis of the allene products.

Supporting Information



Publication History

Received: 09 February 2022

Accepted after revision: 17 March 2022

Accepted Manuscript online:
17 March 2022

Article published online:
12 May 2022

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