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Khan MEI, Cassini TL, Petrini M, Palmieri A. Synthesis of 3,5-disubstituted isoxazoles by domino reductive Nef reaction/cyclization of β-nitroenones. Org Biomol Chem 2024; 22:3299-3303. [PMID: 38577730 DOI: 10.1039/d4ob00232f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
β-Nitroenones can be efficiently converted into 3,5-disubstituted isoxazoles by using tin(II)chloride dihydrate and ethyl acetate as a reducing agent and solvent, respectively. Products are obtained in good yields and several functional groups are tolerated thanks to the mild reaction conditions.
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Affiliation(s)
| | - Tomas Lighuen Cassini
- University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, MC, Italy.
| | - Marino Petrini
- University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, MC, Italy.
| | - Alessandro Palmieri
- University of Camerino, ChIP Research Center, Via Madonna delle Carceri, 62032 Camerino, MC, Italy.
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Yuan L, Kachalova L, Khan MEI, Ballini R, Petrini M, Palmieri A. Overcoming the Usual Reactivity of β-Nitroenones: Synthesis of Polyfunctionalized Homoallylic Alcohols and Conjugated Nitrotriene Systems. J Org Chem 2023; 88:4770-4777. [PMID: 36926909 PMCID: PMC10088019 DOI: 10.1021/acs.joc.2c02669] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/18/2023]
Abstract
Herein, we report a new application of β-nitroenones as valuable building blocks for the preparation of polyfunctionalized homoallylic alcohols; they can be used as key precursors of conjugated nitrotriene systems. The synthesis of homoallylic alcohols was performed exploiting the chemoselective addition of metal allylating agents to the ketone moiety vs the nitroalkenyl group. The conversion of alcohols into nitrotrienes was achieved under Lewis-acid-promoted conditions. Both classes of compounds were obtained in good to excellent yields.
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Affiliation(s)
- Lixia Yuan
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy.,Institute of BioPharmaceutical Research, Liaocheng University, Liaocheng 252059, People's Republic of China
| | - Liudmila Kachalova
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
| | - Muhammad E I Khan
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
| | - Roberto Ballini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
| | - Marino Petrini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
| | - Alessandro Palmieri
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division, ChIP Research Center, University of Camerino, Via Madonna delle Carceri, Camerino, Macerata 62032, Italy
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Bassetti B, Ballini R, Petrini M, Palmieri A. Diastereoselective Conversion of β‐Nitro‐β,γ‐Unsaturated Ketones into Conjugated (
E
,
E
)‐Dienones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202201151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Benedetta Bassetti
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
| | - Roberto Ballini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
| | - Marino Petrini
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
| | - Alessandro Palmieri
- Green Chemistry Group, School of Sciences and Technology, Chemistry Division University of Camerino, ChIP Research Center Via Madonna delle Carceri 62032 Camerino (MC) Italy
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Khan MEI, Di Terlizzi L, Protti S, Palmieri A. Visible‐Light‐Driven Photocatalyst‐Free Preparation of (Z) β‐Nitroacrylate Isomers. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200635] [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]
Affiliation(s)
- Muhammad Ehtisham Ibraheem Khan
- University of Camerino School of Science and Technology: Universita degli Studi di Camerino Scuola di Scienze e Tecnologie Chemistry Division Via Madonna delle Carceri, Centro di ricerca CHIP 62032 Camerino ITALY
| | - Lorenzo Di Terlizzi
- University of Pavia: Universita degli Studi di Pavia Department of Chemistry ITALY
| | - Stefano Protti
- University of Pavia: Universita degli Studi di Pavia Department of Chemistry ITALY
| | - Alessandro Palmieri
- Universita degli Studi di Camerino School of Science and Technology, Chemistry Division Via S. Agostino n. 1 62032 Camerino ITALY
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Lupidi G, Bassetti B, Ballini R, Petrini M, Palmieri A. A New and Effective One‐Pot Synthesis of Polysubstituted Carbazoles Starting from β‐Nitro‐β,γ‐Unsaturated‐Ketones and Indoles. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Gabriele Lupidi
- Green Chemistry Group School of Sciences and Technology Chemistry Division University of Camerino Via S. Agostino n. 1 MC 62032 Camerino Italy
| | - Benedetta Bassetti
- Green Chemistry Group School of Sciences and Technology Chemistry Division University of Camerino Via S. Agostino n. 1 MC 62032 Camerino Italy
| | - Roberto Ballini
- Green Chemistry Group School of Sciences and Technology Chemistry Division University of Camerino Via S. Agostino n. 1 MC 62032 Camerino Italy
| | - Marino Petrini
- Green Chemistry Group School of Sciences and Technology Chemistry Division University of Camerino Via S. Agostino n. 1 MC 62032 Camerino Italy
| | - Alessandro Palmieri
- Green Chemistry Group School of Sciences and Technology Chemistry Division University of Camerino Via S. Agostino n. 1 MC 62032 Camerino Italy
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Liou YC, Wang HW, Edukondalu A, Lin W. Phosphine-Catalyzed Chemoselective Reduction/Elimination/Wittig Sequence for Synthesis of Functionalized 3-Alkenyl Benzofurans. Org Lett 2021; 23:3064-3069. [PMID: 33821660 DOI: 10.1021/acs.orglett.1c00737] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An efficient protocol for the construction of functionalized 3-alkenyl benzofurans is demonstrated under metal-free conditions using catalytic amount of phosphine proceeding an intramolecular Wittig reaction. This one-pot reaction initiated by the phospha-Michael addition of phosphine to O-acylated nitrostyrene, in which phosphine was in-situ-generated from the chemoselective reduction of phosphine oxide with PhSiH3, would provide the phosphorus ylide to result in the aforementioned multifunctionalized benzofuran via O-acylation/nitrous acid elimination/Wittig reaction.
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Affiliation(s)
- Yan-Cheng Liou
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei 11677, Taiwan, Republic of China
| | - Heng-Wei Wang
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei 11677, Taiwan, Republic of China
| | - Athukuri Edukondalu
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei 11677, Taiwan, Republic of China
| | - Wenwei Lin
- Department of Chemistry, National Taiwan Normal University, 88, Sec. 4, Tingchow Road, Taipei 11677, Taiwan, Republic of China
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Chiurchiù E, Xhafa S, Ballini R, Maestri G, Protti S, Palmieri A. Diastereoselective Isomerization of (
E
)‐β‐Nitroenones into β‐Nitro‐β,γ‐Unsaturated Ketones under Microwave Conditions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000747] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Elena Chiurchiù
- Green Chemistry Group - School of Science and Technology Chemistry Division University of Camerino Via S. Agostino 1 62032 Camerino
| | - Sonila Xhafa
- Green Chemistry Group - School of Science and Technology Chemistry Division University of Camerino Via S. Agostino 1 62032 Camerino
| | - Roberto Ballini
- Green Chemistry Group - School of Science and Technology Chemistry Division University of Camerino Via S. Agostino 1 62032 Camerino
| | - Giovanni Maestri
- University of Parma Department of Chemistry, Life Sciences and Environmental Sustainability Parco Area delle Scienze 17/A 43124 Parma Italy
| | - Stefano Protti
- PhotoGreenLab Department of Chemistry University of Pavia Viale Taramelli 12 27100 Pavia Italy
| | - Alessandro Palmieri
- Green Chemistry Group - School of Science and Technology Chemistry Division University of Camerino Via S. Agostino 1 62032 Camerino
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