Synlett 2023; 34(13): 1634-1638
DOI: 10.1055/s-0042-1751431
letter

Diiodine–Triethylsilane System: Formation of N-Alkylsulfonamides from Aldehydes or Ketones and Sulfonamides

Jin Jiang
a   School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, P. R. of China
,
Siyan Feng
a   School of Chemistry and Environmental Engineering, Sichuan University of Science and Engineering, Zigong 643000, P. R. of China
,
Jinming Chang
b   Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, China West Normal University, Nanchong 637009, P. R. of China
› Author Affiliations
This work was supported by the Open Project Program of Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province (CSPC202002) and Natural Science Foundation of Sichuan Province (2022NSFSC1241).


Abstract

Reductive amination has not been commonly used in the preparation of N-alkylsulfonamides because of the low nucleophilicity of sulfonamides. In this work, a protocol for the synthesis of N-alkylsulfonamides from aldehydes or ketones and sulfonamides was developed. Molecular iodine, triethylsilane, and ethyl acetate were used as the initiator, reductant, and solvent, respectively. The key role of triethyl(iodo)silane in the reaction was confirmed through control experiments.

Supporting Information



Publication History

Received: 28 December 2022

Accepted after revision: 20 February 2023

Article published online:
10 March 2023

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