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Allen MA, Ivanovich RA, Beauchemin AM. O-Isocyanates as Uncharged 1,3-Dipole Equivalents in [3+2] Cycloadditions. Angew Chem Int Ed Engl 2020; 59:23188-23197. [PMID: 32767511 DOI: 10.1002/anie.202007942] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2020] [Indexed: 11/10/2022]
Abstract
1,3-Dipoles are commonly used in [3+2] cycloadditions, whereas isoelectronic uncharged dipole variants remain underdeveloped. In contrast to conventional 1,3-dipoles, uncharged dipole equivalents form zwitterionic cycloadducts, which can be exploited to build further molecular complexity. In this work, the first cycloadditions of oxygen-substituted isocyanates (O-isocyanates) were studied experimentally and by DFT calculations. This unique cycloaddition strategy provides access to a novel class of heterocycle aza-oxonium ylides through intramolecular and intermolecular cycloadditions with alkenes. This allowed a systematic study of the reactivity of the transient aza-oxonium ylide intermediate, which can undergo N-O bond cleavage followed by nitrene C-H insertion, and the formation of β-lactams or isoxazolidinones upon varying the structure of the alkene or O-isocyanate reagents.
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Affiliation(s)
- Meredith A Allen
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis-Pasteur Pvt, Ottawa, ON, K1N 6N5, Canada
| | - Ryan A Ivanovich
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis-Pasteur Pvt, Ottawa, ON, K1N 6N5, Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa, 150 Louis-Pasteur Pvt, Ottawa, ON, K1N 6N5, Canada
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2
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Allen MA, Ivanovich RA, Beauchemin AM. O
‐Isocyanates as Uncharged 1,3‐Dipole Equivalents in [3+2] Cycloadditions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202007942] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Meredith A. Allen
- Centre for Catalysis Research and Innovation Department of Chemistry and Biomolecular Sciences University of Ottawa 150 Louis-Pasteur Pvt Ottawa ON K1N 6N5 Canada
| | - Ryan A. Ivanovich
- Centre for Catalysis Research and Innovation Department of Chemistry and Biomolecular Sciences University of Ottawa 150 Louis-Pasteur Pvt Ottawa ON K1N 6N5 Canada
| | - André M. Beauchemin
- Centre for Catalysis Research and Innovation Department of Chemistry and Biomolecular Sciences University of Ottawa 150 Louis-Pasteur Pvt Ottawa ON K1N 6N5 Canada
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Irshad A, Khan N, Farina Y, Baloch N, Samiullah, Ali A, Mun LK, Murtaza G, Attiq-ur-Rehman. Synthesis, spectroscopic characterization, X-ray diffraction studies and in-vitro antibacterial activities of diorganotin(IV) derivatives with N-methyl-4-bromobenzohydroxamic acid. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2017.09.035] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Allen MA, Ivanovich RA, Polat DE, Beauchemin AM. Synthesis of N-Oxyureas by Substitution and Cope-Type Hydroamination Reactions Using O-Isocyanate Precursors. Org Lett 2017; 19:6574-6577. [PMID: 29166028 DOI: 10.1021/acs.orglett.7b03288] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Oxy-carbamate O-isocyanate precursors facilitate access to synthetically valuable N-oxyureas via substitution with amines. This work exploits the reactivity of suitable O-isocyanate precursors, identified by a thorough study highlighting the different reactivity of isocyanate masking groups. This led to bench-stable O-isocyanate precursors, offering improved versatility in the synthesis of N-oxyureas, and demonstrates the controlled reactivity of masked O-isocyanates. Suitable precursors also enabled the first example of Cope-type hydroamination of unsaturated hydroxyureas.
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Affiliation(s)
- Meredith A Allen
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - Ryan A Ivanovich
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - Dilan E Polat
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
| | - André M Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences, University of Ottawa , 10 Marie-Curie, Ottawa, ON K1N 6N5, Canada
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Ivanovich RA, Polat DE, Beauchemin AM. Oxygen-Substituted Isocyanates: Blocked (Masked) Isocyanates Enable Controlled Reactivity. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701046] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Ryan A. Ivanovich
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie Curie Ottawa, Ontario K1N 6N5 Canada
| | - Dilan E. Polat
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie Curie Ottawa, Ontario K1N 6N5 Canada
| | - André M. Beauchemin
- Centre for Catalysis Research and Innovation, Department of Chemistry and Biomolecular Sciences; University of Ottawa; 10 Marie Curie Ottawa, Ontario K1N 6N5 Canada
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6
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Ni C, Chen J, Zhang Y, Hou Y, Wang D, Tong X, Zhu SF, Zhou QL. Phosphine-Catalyzed Asymmetric (3 + 2) Annulations of δ-Acetoxy Allenoates with β-Carbonyl Amides: Enantioselective Synthesis of Spirocyclic β-Keto γ-Lactams. Org Lett 2017; 19:3668-3671. [DOI: 10.1021/acs.orglett.7b01717] [Citation(s) in RCA: 39] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Chunjie Ni
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Jiangfei Chen
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Yuwen Zhang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Yading Hou
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Dong Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Xiaofeng Tong
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology, School of Petrochemical Engineering, Changzhou University, 1 Gehu Road, Changzhou, 213164, China
| | - Shou-Fei Zhu
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
| | - Qi-Lin Zhou
- State
Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China
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7
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Fioravanti S, Pellacani L, Vergari MC. Selective amination reactions of α-nitro aryl and heteroaryl enoates. J Org Chem 2013; 78:8203-7. [PMID: 23859537 DOI: 10.1021/jo4012859] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Highly functionalized tetrasubstituted alkenes were obtained by an unexpected amination reaction promoted by ethyl nosyloxycarbamate on various α-nitro aryl and heteroaryl enoates. A nitrene is likely the aminating species responsible for the observed insertion reaction leading to (E)-β-amino α-nitro enoates as the major products, regardless of the substrate configuration. The compounds, bearing two nitrogenous functional groups in different oxidation states, can be regarded as interesting synthons. In contrast, aziridination was observed for α-nitro alkyl enoates or β-nitro allylic alcohols.
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Affiliation(s)
- Stefania Fioravanti
- Dipartimento di Chimica, Università degli Studi di Roma La Sapienza, P.le A. Moro 5, I-00185 Roma, Italy.
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8
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Markitanov YM, Timoshenko VM, Shermolovich YG. β-Keto sulfones: preparation and application in organic synthesis. J Sulphur Chem 2013. [DOI: 10.1080/17415993.2013.815749] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
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9
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Dual action spirobicycloimidazolidine-2,4-diones: Antidiabetic agents and inhibitors of aldose reductase-an enzyme involved in diabetic complications. Bioorg Med Chem Lett 2013; 23:488-91. [DOI: 10.1016/j.bmcl.2012.11.039] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2012] [Revised: 10/24/2012] [Accepted: 11/12/2012] [Indexed: 11/30/2022]
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10
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Vrček IV, Šakić D, Vrček V, Zipse H, Biruš M. Computational study of radicals derived from hydroxyurea and its methylated analogues. Org Biomol Chem 2012; 10:1196-206. [DOI: 10.1039/c1ob06594g] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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11
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Carroccia L, Fioravanti S, Pellacani L, Sadun C, Tardella PA. Synthesis of optically active trifluoromethyl substituted diaziridines and oxaziridines. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.097] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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12
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Krause JG, Leskiw BD, Emery ML, McGahan ME, McCourt MP, Priefer R. Synthesis of substituted N-hydroxyureas via the in situ generation of t-butoxy isocyanate. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.05.002] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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14
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Hydroxyurea and hydroxamic acid derivatives as antitumor drugs. Cancer Chemother Pharmacol 2009; 64:213-21. [DOI: 10.1007/s00280-009-0991-z] [Citation(s) in RCA: 74] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2009] [Accepted: 03/22/2009] [Indexed: 10/20/2022]
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15
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Rajwade RP, Pande R. Evaluation of lipophilicity of N-arylhydroxamic acids by reversed phase-high performance liquid chromatographic method and self-organizing molecular field analysis. Anal Chim Acta 2008; 630:205-10. [DOI: 10.1016/j.aca.2008.09.062] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2008] [Revised: 09/14/2008] [Accepted: 09/22/2008] [Indexed: 11/29/2022]
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16
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Fioravanti S, Pellacani L, Ramadori F, Tardella PA. A novel deacylation during the amination of trifluoromethyl β-dicarbonyl compounds. Tetrahedron Lett 2007. [DOI: 10.1016/j.tetlet.2007.09.014] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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17
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Jacquot DEN, Zöllinger M, Lindel T. Total synthesis of the marine natural product rac-dibromophakellstatin. Angew Chem Int Ed Engl 2006; 44:2295-8. [PMID: 15751102 DOI: 10.1002/anie.200462252] [Citation(s) in RCA: 65] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Delphine E N Jacquot
- Department Chemie und Biochemie, Ludwig-Maximilians-Universität München, Butenandtstrasse 5-13, 81377 Munich, Germany
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Jacquot DEN, Zöllinger M, Lindel T. Totalsynthese des marinen Naturstoffsrac-Dibromphakellstatin. Angew Chem Int Ed Engl 2005. [DOI: 10.1002/ange.200462252] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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20
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Kurz T, Widyan K. O-Protected 3-hydroxy-oxazolidin-2,4-diones: novel precursors in the synthesis of α-hydroxyhydroxamic acids. Org Biomol Chem 2004; 2:2023-7. [PMID: 15254629 DOI: 10.1039/b404950k] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
O-Protected 3-hydroxyoxazolidin-2,4-diones have been prepared in a novel one-pot reaction by subsequent treatment of cyanohydrins with 1,1'-carbonyldiimidazole and O-protected hydroxylamines followed by acidic hydrolysis of the intermediate 4-imino-oxazolidin-2-ones. Decarbonylation of O-protected 3-hydroxyoxazolidin-2,4-diones by catalytic amounts of sodium methoxide, lithium hydroxide, sodium carbonate and caesium carbonate in methanol afforded O-protected alpha-hydroxyhydroxamic acids in excellent yields. Their deprotection provided a series of novel alpha-hydroxyhydroxamic acids.
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Affiliation(s)
- Thomas Kurz
- Institute of Pharmacy, University of Hamburg, Bundesstrasse 45, 20146 Hamburg, Germany.
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Couturier M, Tucker JL, Proulx C, Boucher G, Dubé P, Andresen BM, Ghosh A. 5,5-Dimethyl-1,4,2-dioxazoles as versatile aprotic hydroxamic acid protecting groups. J Org Chem 2002; 67:4833-8. [PMID: 12098295 DOI: 10.1021/jo0256890] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
5,5-Dimethyl-1,4,2-dioxazoles are readily installed by transketalization of 2,2-diethoxypropane, where both the NH and OH moieties are protected in a nonprotic form. The dioxazoles are stable to a wide variety of reaction conditions and readily revert back to the hydroxamic acid by treatment with Nafion-H in 2-propanol. The method is applicable to primary, secondary, tertiary, and aromatic hydroxamic acids, and the acidity of the protons adjacent to the dioxazole allows alpha-functionalization.
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Affiliation(s)
- Michel Couturier
- Process Research and Development, Pfizer Global Research and Development, Eastern Point Road, P.O. Box 8013, Groton, Connecticut 06340-8013, USA.
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Hanessian S, Moitessier N, Wilmouth S. Tetrahydrofuran as a Scaffold for Peptidomimetics. Application to the Design and Synthesis of Conformationally Constrained Metalloproteinase Inhibitors. Tetrahedron 2000. [DOI: 10.1016/s0040-4020(00)00687-6] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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