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Maiti D, Saha A, Guin S, Maiti D, Sen S. Unveiling catalyst-free electro-photochemical reactivity of aryl diazoesters and facile synthesis of oxazoles, imide-fused pyrroles and tetrahydro-epoxy-pyridines via carbene radical anions. Chem Sci 2023; 14:6216-6225. [PMID: 37325143 PMCID: PMC10266477 DOI: 10.1039/d3sc00089c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2023] [Accepted: 04/16/2023] [Indexed: 06/17/2023] Open
Abstract
Herein, we report a reagent-less (devoid of catalyst, supporting electrolyte, oxidant and reductant) electro-photochemical (EPC) reaction [electricity (50 μA) and blue LED (5 W)] of aryl diazoesters to generate radical anions which are subsequently reacted with acetonitrile or propionitrile and maleimides to generate diversely substituted oxazoles, diastereo-selective imide-fused pyrroles and tetrahydroepoxy-pyridines in good to excellent yield. Thorough mechanistic investigation including a 'biphasic e-cell' experiment supports the reaction mechanism involving a carbene radical anion. The tetrahydroepoxy-pyridines could be fluently converted to fused pyridines resembling vitamin B6 derivatives. The source of the electric current in the EPC reaction could be a simple cell phone charger. The reaction was efficiently scaled up to the gram level. Crystal structure, 1D, 2D NMRs and HRMS data confirmed the product structures. This report demonstrates a unique generation of radical anions via electro-photochemistry and their direct applications in the synthesis of important heterocycles.
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Affiliation(s)
- Debajit Maiti
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University Chithera, Dadri, Gautam Buddha Nagar UP 201314 India
| | - Argha Saha
- Department of Chemistry, IIT-Bombay Powai Mumbai 400076 MH India
| | - Srimanta Guin
- Department of Chemistry, IIT-Bombay Powai Mumbai 400076 MH India
| | - Debabrata Maiti
- Department of Chemistry, IIT-Bombay Powai Mumbai 400076 MH India
| | - Subhabrata Sen
- Department of Chemistry, School of Natural Sciences, Shiv Nadar Institution of Eminence Deemed to be University Chithera, Dadri, Gautam Buddha Nagar UP 201314 India
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Schuppe AW, Borrajo-Calleja GM, Buchwald SL. Enantioselective Olefin Hydrocyanation without Cyanide. J Am Chem Soc 2019; 141:18668-18672. [PMID: 31687821 PMCID: PMC6945496 DOI: 10.1021/jacs.9b10875] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enantioselective hydrocyanation of olefins represents a conceptually straightforward approach to prepare enantiomerically enriched nitriles. These, in turn, comprise or are intermediates in the synthesis of many pharmaceuticals and their synthetic derivatives. Herein, we report a cyanide-free dual Pd/CuH-catalyzed protocol for the asymmetric Markovnikov hydrocyanation of vinyl arenes and the anti-Markovnikov hydrocyanation of terminal olefins in which oxazoles function as nitrile equivalents. After an initial hydroarylation process, the oxazole substructure was deconstructed using a [4 + 2]/retro-[4 + 2] sequence to afford the enantioenriched nitrile product under mild reaction conditions.
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Affiliation(s)
| | | | - Stephen L. Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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3
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Jouanno LA, Renault K, Sabot C, Renard PY. 5-Alkoxyoxazole - A Versatile Building Block in (Bio)organic Synthesis. European J Org Chem 2016. [DOI: 10.1002/ejoc.201600127] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Laurie-Anne Jouanno
- Centre for Catalysis; Research and Innovation; Department of Chemistry; University of Ottawa; K1N 6N5 Ottawa Ontario Canada
| | - Kévin Renault
- Normandie Univ; COBRA; UMR 6014 & FR 3038; CNRS; Université de Rouen; 1 rue Tesnière 76821 Mont-Saint-Aignan, Cedex France
| | - Cyrille Sabot
- Normandie Univ; COBRA; UMR 6014 & FR 3038; CNRS; Université de Rouen; 1 rue Tesnière 76821 Mont-Saint-Aignan, Cedex France
| | - Pierre-Yves Renard
- Normandie Univ; COBRA; UMR 6014 & FR 3038; CNRS; Université de Rouen; 1 rue Tesnière 76821 Mont-Saint-Aignan, Cedex France
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4
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Jouanno LA, Chevalier A, Sekkat N, Perzo N, Castel H, Romieu A, Lange N, Sabot C, Renard PY. Kondrat’eva Ligation: Diels–Alder-Based Irreversible Reaction for Bioconjugation. J Org Chem 2014; 79:10353-66. [DOI: 10.1021/jo501972m] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Laurie-Anne Jouanno
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
| | - Arnaud Chevalier
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
| | - Nawal Sekkat
- Section
des Sciences Pharmaceutiques, Université de Genève, Université de Lausanne, Quai Ernest Ansermet 30, CH-1211 Genève 4, Switzerland
| | - Nicolas Perzo
- Inserm
U982, Laboratory of Neuronal and Neuroendocrine Communication and
Differentiation (DC2N), Astrocyte and Vascular Niche, Institute of
Research and Biomedical Innovation (IRIB), PRES Normandy University, University of Rouen, 76821 Mont-Saint-Aignan Cedex, France
- North-West Cancéropole (CNO), 59008 Lille Cedex, France
| | - Hélène Castel
- Inserm
U982, Laboratory of Neuronal and Neuroendocrine Communication and
Differentiation (DC2N), Astrocyte and Vascular Niche, Institute of
Research and Biomedical Innovation (IRIB), PRES Normandy University, University of Rouen, 76821 Mont-Saint-Aignan Cedex, France
- North-West Cancéropole (CNO), 59008 Lille Cedex, France
| | - Anthony Romieu
- ICMUB,
UMR CNRS 6302, Université de Bourgogne, 9 Avenue Alain Savary, 21078 Dijon, France
- Institut Universitaire de France, 103 Boulevard Saint-Michel, 75005 Paris, France
| | - Norbert Lange
- Section
des Sciences Pharmaceutiques, Université de Genève, Université de Lausanne, Quai Ernest Ansermet 30, CH-1211 Genève 4, Switzerland
| | - Cyrille Sabot
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
| | - Pierre-Yves Renard
- Normandie Univ, COBRA, UMR 6014 & FR 3038; Univ Rouen; INSA Rouen; CNRS, 1 rue Tesnière, 76821 Mont-Saint-Aignan Cedex, France
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5
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Berseneva VS, Bakulev VA, Dehaen W, Toppet S, Borovkova M. Reactions of malonthioamides and malonamidines with methyl acetylpyruvate as a one-step method to prepare 4-thio- and 4-aminopyrrolo[3,4-c]pyridines. Tetrahedron 2007. [DOI: 10.1016/j.tet.2007.03.054] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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6
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Yamazaki C, Arima H, Udagawa S. C-5 functionalization of trisubstituted imidazoles with azodicarbonyl compounds. J Heterocycl Chem 1996. [DOI: 10.1002/jhet.5570330107] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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8
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Nesi R, Turchi S, Giomi D, Papaleo S. 4-Nitro-2-phenyloxazole: an electrophilic dienophile for normal Diels–Alder reactions in the oxazole series. ACTA ACUST UNITED AC 1993. [DOI: 10.1039/c39930000978] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Ibata T, Isogami Y, Nakawa H, Tamura H, Suga H, Shi X, Fujieda H. Abnormal Diels–Alder Reaction of 5-Alkoxyoxazoles with Tetracyanoethylene and X-Ray Crystal Structure of an Adduct. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1992. [DOI: 10.1246/bcsj.65.1771] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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12
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Ibata T, Toyoda J, Tamura H, Ogawa K. Molecular Structure of the exo-Diels–Alder-Adduct of 5-Methoxy-2-methyl-4-(p-nitrophenyl)oxazole withN-Methylmaleimide. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.432] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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13
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Ibata T, Nakawa H, Isogami Y, Matsumoto K. The High Pressure Diels–Alder Reactions of 5-Methoxy-2-methyl-4-(p-nitrophenyl)oxazole with Ethylenic Dienophiles. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1986. [DOI: 10.1246/bcsj.59.3197] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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