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Phaenok S, Nguyen LA, Soorukram D, Nguyen TTT, Retailleau P, Nguyen TB. Sulfur- and Amine- Promoted Multielectron Autoredox Transformation of Nitromethane: Multicomponent Access to Thiourea Derivatives. Chemistry 2024; 30:e202303703. [PMID: 37953668 DOI: 10.1002/chem.202303703] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2023] [Revised: 11/12/2023] [Accepted: 11/13/2023] [Indexed: 11/14/2023]
Abstract
Thiourea derivatives are in-demand motifs in organic synthesis, medicinal chemistry and material science, yet redox methods for the synthesis that start from safe, simple, inexpensive and readily available feedstocks are scarce. In this article, we disclose the synthesis of these motifs using elemental sulfur and nitromethane as the starting materials. The method harnesses the multi-electron auto-redox property of nitromethane in the presence of sulfur and amines, delivering thiourea products without any added oxidant or reductant. Extension of this reaction to cyclizable amines and/or higher homologues of nitromethane led to a wide range of nitrogen heterocycles and thioamides. Operationally simple, the reactions are scalable, tolerate a wide range of functional groups, and can be employed for the direct functionalization of natural products. Mechanistically, the nitro group was found to act as an oxidant leaving group, being reduced to ammonia whereas sulfur, along with the role of a sulfur building block for the thiocarbonyl group, behaved as a complementary reductant, being oxidized to sulfate.
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Affiliation(s)
- Supasorn Phaenok
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198, Gif-sur-Yvette, France
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Le Anh Nguyen
- Graduate University of Science and Technology, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18 Hoang Quoc Viet, Cau Giay, Hanoi, Vietnam
| | - Darunee Soorukram
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC), Faculty of Science, Mahidol University, Rama VI Road, Bangkok, 10400, Thailand
| | - Thi Thanh Tam Nguyen
- Univ Paris Est Creteil, CNRS, Institut de Chimie et des Matériaux Paris-Est, UMR 7182, 2 rue Henri Dunant, 94320, Thiais, France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198, Gif-sur-Yvette, France
| | - Thanh Binh Nguyen
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301 Université Paris-Sud, Université Paris-Saclay, 1, av de la Terrasse, 91198, Gif-sur-Yvette, France
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Audet F, Donnard M, Panossian A, Bernier D, Pazenok S, Leroux FR. New Chemical Transformations Involving SO 2 F 2 -Mediated Alcohol Activation. CHEM REC 2023; 23:e202300107. [PMID: 37236146 DOI: 10.1002/tcr.202300107] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Revised: 05/02/2023] [Indexed: 05/28/2023]
Abstract
Sulfuryl fluoride is a gas produced on a multi-ton scale for its use as a fumigant. In the last decades, it has gained interest in organic synthesis as a reagent with unique properties in terms of stability and reactivity when compared to other sulfur-based reagents. Sulfuryl fluoride has not only been used for sulfur-fluoride exchange (SuFEx) chemistry but also encountered applications in classic organic synthesis as an efficient activator of both alcohols and phenols, forming a triflate surrogate, namely a fluorosulfonate. A long-standing industrial collaboration in our research group drove our work on the sulfuryl fluoride-mediated transformations that will be highlighted below. We will first describe recent works on metal-catalyzed transformations from aryl fluorosulfonates while emphasizing the one-pot processes from phenol derivatives. In a second section, nucleophilic substitution reactions on polyfluoroalkyl alcohols will be discussed and the value of polyfluoroalkyl fluorosulfonates in comparison to alternative triflate and halide reagents will be brought to light.
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Affiliation(s)
- Florian Audet
- Laboratoire d'Innovation Moléculaire et Applications (UMR7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 25 rue Becquerel, 67000, Strasbourg, France
| | - Morgan Donnard
- Laboratoire d'Innovation Moléculaire et Applications (UMR7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 25 rue Becquerel, 67000, Strasbourg, France
| | - Armen Panossian
- Laboratoire d'Innovation Moléculaire et Applications (UMR7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 25 rue Becquerel, 67000, Strasbourg, France
| | - David Bernier
- Bayer S.A.S., 14 impasse Pierre Baizet, 69263, Lyon, France
| | - Sergii Pazenok
- Bayer CropScience AG, Alfred Nobel Straße 50, 40789, Monheim, Germany
| | - Frédéric R Leroux
- Laboratoire d'Innovation Moléculaire et Applications (UMR7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 25 rue Becquerel, 67000, Strasbourg, France
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Pyrih A, Łapiński A, Zięba S, Lesyk R, Jaskolski M, Gzella AK. Proton tautomerism and stereoisomerism of 4-amino-1,3-thiazol-2(5H)-one derivatives bearing substituents with opposite electronic effects: Synthesis, structure and spectroscopic studies. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134441] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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