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Pal K, Srinivasu V, Biswas S, Sureshkumar D. Visible light-induced organo-photocatalyzed route to synthesize substituted pyrazoles. Org Biomol Chem 2024; 22:2384-2388. [PMID: 38441915 DOI: 10.1039/d4ob00248b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2024]
Abstract
The synthesis of tetra-substituted pyrazoles holds significant synthetic value and has been accomplished through an organo-photocatalyzed decarboxylative intramolecular cyclization using readily available 1,2-diaza-1,3-dienes and α-ketoacids. This method allows for the systematic synthesis of substituted pyrazole derivatives. Notably, this approach is characterized by its metal-free and oxidant-free nature, offering distinct advantages such as short reaction times and exceptionally mild reaction conditions. The developed methodology enables the efficient construction of tetra-substituted pyrazoles, expanding the available chemical space for exploration and opening up potential applications in various scientific fields.
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Affiliation(s)
- Koustav Pal
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Vinjamuri Srinivasu
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Sourabh Biswas
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
| | - Devarajulu Sureshkumar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, West Bengal 741246, India.
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2
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Affiliation(s)
- Pavel K. Mykhailiuk
- Enamine Ltd., Chervonotkatska 78, 02094 Kyiv, Ukraine
- Chemistry Department, Taras Shevchenko National University of Kyiv, Volodymyrska 64, 01601 Kyiv, Ukraine
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3
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de Azambuja F, Lovrien SM, Ross P, Ambler BR, Altman RA. Catalytic One-Step Deoxytrifluoromethylation of Alcohols. J Org Chem 2019; 84:2061-2071. [PMID: 30632749 DOI: 10.1021/acs.joc.8b03072] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A new bench-stable trifluoromethylation reagent, phenyl bromodifluoroacetate, converts readily available alcohols to trifluoromethanes in a Cu-catalyzed deoxytrifluoromethylation reaction. This reaction streamlines access to target biologically active molecules, and should be useful for a variety of medicinal, agricultural, and materials chemists.
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Affiliation(s)
- Francisco de Azambuja
- Department of Medicinal Chemistry , The University of Kansas , Lawrence , Kansas 66045 , United States
| | - Sydney M Lovrien
- Department of Medicinal Chemistry , The University of Kansas , Lawrence , Kansas 66045 , United States
| | - Patrick Ross
- Department of Medicinal Chemistry , The University of Kansas , Lawrence , Kansas 66045 , United States
| | - Brett R Ambler
- Department of Medicinal Chemistry , The University of Kansas , Lawrence , Kansas 66045 , United States
| | - Ryan A Altman
- Department of Medicinal Chemistry , The University of Kansas , Lawrence , Kansas 66045 , United States
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Herrera AG, Schmitt E, Panossian A, Vors JP, Pazenok S, Leroux FR. New synthetic access to 3-fluoroalkyl-5-pyrazolecarboxylates and carboxylic acids. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.07.010] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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5
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Lebed PS, Fenneteau J, Wu Y, Cossy J, Mykhailiuk PK. Synthesis of N
-Nitroso CHF2
-Pyrazolines and Their Transformation into CHF2
-Isoxazolines and -Pyrazoles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700803] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Pavlo S. Lebed
- Department of Chemistry; Taras Shevchenko National University of Kyiv; Volodymyrska 64 01601 Kyiv Ukraine
- Enamine Ltd.; Chervonotkatska 78 02094 Kyiv Ukraine
- ChemBioCenter; Taras Shevchenko National University of Kyiv; Volodymyrska 64 01601 Kyiv Ukraine
| | - Johan Fenneteau
- Laboratoire de Chimie Organique; Institute of Chemistry; Biology and Innovation (CBI) UMR; 8281 ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231 Paris Cedex 05 France
| | - Yong Wu
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry; West China School of Pharmacy; Sichuan University; 610041 Chengdu China
| | - Janine Cossy
- Laboratoire de Chimie Organique; Institute of Chemistry; Biology and Innovation (CBI) UMR; 8281 ESPCI Paris; PSL Research University; 10 rue Vauquelin 75231 Paris Cedex 05 France
| | - Pavel K. Mykhailiuk
- Department of Chemistry; Taras Shevchenko National University of Kyiv; Volodymyrska 64 01601 Kyiv Ukraine
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Obijalska E, Utecht G, Kowalski MK, Mlostoń G, Rachwalski M. Nucleophilic addition of (difluoromethyl)trimethylsilane to selected α-imino ketones and aryl diketones. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.06.025] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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7
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Bazhin DN, Kudyakova YS, Röschenthaler GV, Burgart YV, Slepukhin PA, Isenov ML, Saloutin VI, Charushin VN. A Convenient Approach to CF3-Containing N-Heterocycles Based on 2-Methoxy-2-methyl-5-(trifluoromethyl)furan-3(2H)-one. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500737] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Mykhailiuk PK. In Situ Generation of Difluoromethyl Diazomethane for [3+2] Cycloadditions with Alkynes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501529] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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10
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Mykhailiuk PK. In Situ generation of difluoromethyl diazomethane for [3+2] cycloadditions with alkynes. Angew Chem Int Ed Engl 2015; 54:6558-61. [PMID: 25801346 DOI: 10.1002/anie.201501529] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2015] [Indexed: 12/15/2022]
Abstract
A novel approach to agrochemically important difluoromethyl-substituted pyrazoles has been developed based on the elusive reagent CF2 HCHN2 , which was synthesized (generated in situ) for the first time and employed in [3+2] cycloaddition reactions with alkynes. The reaction is extremely practical as it is a one-pot process, does not require a catalyst or the isolation of the potentially toxic and explosive gaseous intermediate, and proceeds in a common solvent, namely chloroform, in air. The reaction is also scalable and allows for the preparation of the target pyrazoles on gram scale.
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Affiliation(s)
- Pavel K Mykhailiuk
- Enamine Ltd. Matrosova 23, 01103 Kyiv (Ukraine) http://www.enamine.net. , .,Taras Shevchenko National University of Kyiv, Chemistry Department, Volodymyrska 64, 01601 Kyiv (Ukraine). ,
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Yang W, Ye S, Fanning D, Coon T, Schmidt Y, Krenitsky P, Stamos D, Yu JQ. Orchestrated triple C-H activation reactions using two directing groups: rapid assembly of complex pyrazoles. Angew Chem Int Ed Engl 2015; 54:2501-4. [PMID: 25641121 PMCID: PMC4426881 DOI: 10.1002/anie.201410462] [Citation(s) in RCA: 61] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/25/2014] [Revised: 11/19/2014] [Indexed: 11/11/2022]
Abstract
A sequential triple C-H activation reaction directed by a pyrazole and an amide group leads to the well-controlled construction of sterically congested dihydrobenzo[e]indazole derivatives. This cascade reaction demonstrates that the often problematic competing C-H activation pathways in the presence of multiple directing groups can be harvested by design to improve step economy in synthesis. Pyrazole as a relatively weak coordinating group is shown to direct Csp3-H activation for the first time.
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Affiliation(s)
- Weibo Yang
- Department of Chemistry, The Scripps Research Institute (TSRI) 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA)
| | - Shengqing Ye
- Department of Chemistry, The Scripps Research Institute (TSRI) 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA)
| | - Dewey Fanning
- Medicinal Chemistry, Vertex Pharmaceuticals, 11010 Torreyana Rd, San Diego, CA 92121
| | - Timothy Coon
- Medicinal Chemistry, Vertex Pharmaceuticals, 11010 Torreyana Rd, San Diego, CA 92121
| | - Yvonne Schmidt
- Medicinal Chemistry, Vertex Pharmaceuticals, 11010 Torreyana Rd, San Diego, CA 92121
| | - Paul Krenitsky
- Medicinal Chemistry, Vertex Pharmaceuticals, 11010 Torreyana Rd, San Diego, CA 92121
| | - Dean Stamos
- Medicinal Chemistry, Vertex Pharmaceuticals, 11010 Torreyana Rd, San Diego, CA 92121
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute (TSRI) 10550 North Torrey Pines Road, La Jolla, CA 92037 (USA)
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Yang W, Ye S, Fanning D, Coon T, Schmidt Y, Krenitsky P, Stamos D, Yu JQ. Orchestrated Triple CH Activation Reactions Using Two Directing Groups: Rapid Assembly of Complex Pyrazoles. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201410462] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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13
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Mykhailiuk PK. Three-component synthesis of fluorinated pyrazoles from fluoroalkylamines, NaNO2 and electron-deficient alkynes. Org Biomol Chem 2015; 13:3438-45. [DOI: 10.1039/c4ob02670e] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
Three-component synthesis of fluorinated pyrazoles.
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Affiliation(s)
- Pavel K. Mykhailiuk
- Enamine Ltd
- 01013 Kyiv
- Ukraine
- Faculty of Chemistry
- Taras Shevchenko National University of Kyiv
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