Synthesis 2021; 53(20): 3769-3776
DOI: 10.1055/a-1516-8481
paper

Copper-Catalyzed Sulfonylation of Cyclobutanone Oxime Esters with Sulfonyl Hydrazides

Bingbing Dong
a   Green Catalysis Center, and College of Chemistry; Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province; Zhengzhou University, No.100 Science Avenue, Zhengzhou 450001, P. R. of China
,
Jiansha Lu
a   Green Catalysis Center, and College of Chemistry; Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province; Zhengzhou University, No.100 Science Avenue, Zhengzhou 450001, P. R. of China
,
Honghao Bao
a   Green Catalysis Center, and College of Chemistry; Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province; Zhengzhou University, No.100 Science Avenue, Zhengzhou 450001, P. R. of China
,
Yuanyuan Zhang
a   Green Catalysis Center, and College of Chemistry; Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province; Zhengzhou University, No.100 Science Avenue, Zhengzhou 450001, P. R. of China
,
Yingguo Liu
b   Division of Molecular Catalysis & Synthesis, Henan Institute of Advanced Technology, Zhengzhou University, No.100 Science Avenue, Zhengzhou 450001, P. R. of China
,
Yuting Leng
a   Green Catalysis Center, and College of Chemistry; Key Laboratory of Chemical Biology and Organic Chemistry of Henan Province; Zhengzhou University, No.100 Science Avenue, Zhengzhou 450001, P. R. of China
› Institutsangaben
This work was supported by grants from the Top Youth Talent Fund of Zhengzhou University and The State Key Laboratory of Bio-organic and Natural Products Chemistry, Chinese Academy of Sciences (CAS) (SKLBNPC18440).


Abstract

A copper-catalyzed radical cross-coupling of cyclobutanone oxime esters with sulfonyl hydrazides has been developed. The copper-based catalytic system proved crucial for cleavage of the C−C bond of cyclobutanone oximes and for selective C–S bond-formation involving persistent sulfonyl-metal radical intermediates. This protocol is distinguished by the low-cost catalytic system, which does not require ligand, base, or toxic cyanide salt, and by the use of readily accessible starting materials, as well as broad substrate scope, providing an efficient approach to various diversely substituted cyano-containing sulfones.

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Publikationsverlauf

Eingereicht: 27. April 2021

Angenommen nach Revision: 25. Mai 2021

Accepted Manuscript online:
25. Mai 2021

Artikel online veröffentlicht:
01. Juli 2021

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