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Efficient Catalytic Synthesis of Condensed Isoxazole Derivatives via Intramolecular Oxidative Cycloaddition of Aldoximes. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123860. [PMID: 35744982 PMCID: PMC9229713 DOI: 10.3390/molecules27123860] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2022] [Revised: 06/13/2022] [Accepted: 06/14/2022] [Indexed: 01/28/2023]
Abstract
The intramolecular oxidative cycloaddition reaction of alkyne- or alkene-tethered aldoximes was catalyzed efficiently by hypervalent iodine(III) species to afford the corresponding polycyclic isoxazole derivatives in up to a 94% yield. The structure of the prepared products was confirmed by various methods, including X-ray crystallography. Mechanistic study demonstrated the crucial role of hydroxy(aryl)iodonium tosylate as a precatalyst, which is generated from 2-iodobenzoic acid and m-chloroperoxybenzoic acid in the presence of a catalytic amount of p-toluenesulfonic acid.
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Talha A, Favreau C, Bourgoin M, Robert G, Auberger P, El Ammari L, Saadi M, Benhida R, Martin AR, Bougrin K. Ultrasound-assisted one-pot three-component synthesis of new isoxazolines bearing sulfonamides and their evaluation against hematological malignancies. ULTRASONICS SONOCHEMISTRY 2021; 78:105748. [PMID: 34520963 PMCID: PMC8436160 DOI: 10.1016/j.ultsonch.2021.105748] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/13/2020] [Revised: 08/24/2021] [Accepted: 09/02/2021] [Indexed: 06/13/2023]
Abstract
In the present study, following a one-pot two-step protocol, we have synthesized novel sulfonamides-isoxazolines hybrids (3a-r) via a highly regioselective 1,3-dipolar cycloaddition. The present methodology capitalized on trichloroisocyanuric acid (TCCA) as a safe and ecological oxidant and chlorinating agent for the in-situ conversion of aldehydes to nitrile oxides in the presence of hydroxylamine hydrochloride, under ultrasound activation. These nitrile oxides could be engaged in 1,3-dipolar cycloaddition reactions with various alkene to afford the targeted sulfonamides-isoxazolines hybrids (3a-r). The latter were assessed for their antineoplastic activity against model leukemia cell lines (Chronic Myeloid Leukemia, K562 and Promyelocytic Leukemia, HL-60).
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Affiliation(s)
- Aicha Talha
- Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculty of Science, B.P. 1014, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center, Mohammed V University in Rabat, Morocco
| | - Cécile Favreau
- Université Côte d'Azur, INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Bâtiment ARCHIMED, 151 Route de Saint-Antoine de Ginestière, BP 2 3194, 06204 Nice Cedex 3, France
| | - Maxence Bourgoin
- Université Côte d'Azur, INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Bâtiment ARCHIMED, 151 Route de Saint-Antoine de Ginestière, BP 2 3194, 06204 Nice Cedex 3, France
| | - Guillaume Robert
- Université Côte d'Azur, INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Bâtiment ARCHIMED, 151 Route de Saint-Antoine de Ginestière, BP 2 3194, 06204 Nice Cedex 3, France
| | - Patrick Auberger
- Université Côte d'Azur, INSERM U1065, Centre Méditerranéen de Médecine Moléculaire (C3M), Bâtiment ARCHIMED, 151 Route de Saint-Antoine de Ginestière, BP 2 3194, 06204 Nice Cedex 3, France
| | - Lahcen El Ammari
- Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des, Matériaux, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn, Batouta, BP 1014, Rabat, Morocco
| | - Mohamed Saadi
- Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des, Matériaux, Faculty of Sciences, Mohammed V University in Rabat, Avenue Ibn, Batouta, BP 1014, Rabat, Morocco
| | - Rachid Benhida
- Chemical & Biochemical Sciences Green-Process Engineering (CBS) Mohammed VI Polytechnic University, Lot 660, Hay Moulay Rachid, Benguerir, Morocco; Université Côte d'Azur, CNRS, Institut de Chimie de Nice UMR 7272 - 06108 Nice, France
| | - Anthony R Martin
- Université Côte d'Azur, CNRS, Institut de Chimie de Nice UMR 7272 - 06108 Nice, France.
| | - Khalid Bougrin
- Equipe de Chimie des Plantes et de Synthèse Organique et Bioorganique, URAC23, Faculty of Science, B.P. 1014, Geophysics, Natural Patrimony and Green Chemistry (GEOPAC) Research Center, Mohammed V University in Rabat, Morocco; Chemical & Biochemical Sciences Green-Process Engineering (CBS) Mohammed VI Polytechnic University, Lot 660, Hay Moulay Rachid, Benguerir, Morocco.
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Convenient Synthesis of Pyrazolo[4',3':5,6]pyrano[4,3- c][1,2]oxazoles via Intramolecular Nitrile Oxide Cycloaddition. Molecules 2021; 26:molecules26185604. [PMID: 34577075 PMCID: PMC8469150 DOI: 10.3390/molecules26185604] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2021] [Revised: 09/13/2021] [Accepted: 09/14/2021] [Indexed: 01/07/2023] Open
Abstract
A simple and efficient synthetic route to the novel 3a,4-dihydro-3H,7H- and 4H,7H-pyrazolo[4′,3′:5,6]pyrano[4,3-c][1,2]oxazole ring systems from 3-(prop-2-en-1-yloxy)- or 3-(prop-2-yn-1-yloxy)-1H-pyrazole-4-carbaldehyde oximes has been developed by employing the intramolecular nitrile oxide cycloaddition (INOC) reaction as the key step. The configuration of intermediate aldoximes was unambiguously determined using NOESY experimental data and comparison of the magnitudes of 1JCH coupling constants of the iminyl moiety, which were greater by approximately 13 Hz for the predominant syn isomer. The structures of the obtained heterocyclic products were confirmed by detailed 1H, 13C and 15N NMR spectroscopic experiments and HRMS measurements.
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Yang S, Li H, Li P, Yang J, Wang L. Room temperature iron(ii)-catalyzed radical cyclization of unsaturated oximes with hypervalent iodine reagents. Org Biomol Chem 2020; 18:715-724. [DOI: 10.1039/c9ob02424g] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
An iron(ii)-catalyzed radical cyclization of oximes with hypervalent iodine reagents was developed, which enabled the construction of the isoxazoline backbone.
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Affiliation(s)
- Shichao Yang
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- P.R. China
| | - Hongji Li
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- P.R. China
| | - Pinhua Li
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- P.R. China
| | - Jingya Yang
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- P.R. China
| | - Lei Wang
- Department of Chemistry
- Huaibei Normal University
- Huaibei
- P.R. China
- State Key Laboratory of Organometallic Chemistry
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Fritsch L, Merlo AA. An old dog with new tricks: Schiff bases for liquid crystals materials based on isoxazolines and isoxazoles. ChemistrySelect 2016. [DOI: 10.1002/slct.201500044] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Luma Fritsch
- Chemistry Institute; Universidade Federal do Rio Grande do Sul (UFRGS); Av. Bento Gonçalves 9500 CEP 91501970 Porto Alegre Brazil
| | - Aloir A. Merlo
- Chemistry Institute; Universidade Federal do Rio Grande do Sul (UFRGS); Av. Bento Gonçalves 9500 CEP 91501970 Porto Alegre Brazil
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Romanski J, Nowak P, Maksymiuk A, Chapuis C, Jurczak J. Diastereoselective 1,3-dipolar cycloadditions of both electronically modified phenyl-nitrile oxides and stilbenes. RSC Adv 2013. [DOI: 10.1039/c3ra41718b] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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