Synthesis 2025; 57(05): 1015-1024
DOI: 10.1055/a-2501-4947
paper

Cobalt-Catalyzed Three-Component Synthesis of α-Substituted N-Sulfonyl Amines via C(sp2)–H Bond Activation

Oluwaseun A. Olu-Igbiloba
,
Helmut Sitzmann
,
Generous financial support by the Research Unit NanoKat at the RPTU Kaiserslautern-Landau and the DAAD (PhD scholarship to O. A. O.-I.) is gratefully acknowledged.


Abstract

Herein, we report a three-component synthesis of α-substituted N-sulfonyl amines from aryl aldehydes, primary sulfonamides, and (hetero)arenes as readily available building blocks. This method is based on the direct functionalization of (hetero)arenes via a cobalt-catalyzed C(sp2)–H bond activation. It enables the modular synthesis of highly substituted sulfonamides as interesting scaffolds for pharmaceutical applications in good yields with a high degree of structural diversity. The applicability of this method in the context of pharmaceutical research was demonstrated by the late-stage modification of active pharmaceutical ingredients and drug-like compounds. Overall, this process offers an interesting and atom-economical alternative to classical approaches for the preparation of α-arylated amines, such as the Petasis reactions or similar processes based on organometallic reagents.

Supporting Information



Publication History

Received: 18 November 2024

Accepted after revision: 12 December 2024

Accepted Manuscript online:
12 December 2024

Article published online:
21 January 2025

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