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Sang D, Dong B, Yu K, Tian J. Ferric Chloride-Mediated Transacylation of N-Acylsulfonamides. J Org Chem 2024; 89:2306-2319. [PMID: 38272854 DOI: 10.1021/acs.joc.3c02288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2024]
Abstract
Transacylation of N-acylsulfonamides, which replaces the N-acyl group with a new one, is a challenging and underdeveloped fundamental transformation. Herein, a general method for transacylation of N-acylsulfonamides is presented. The transformation is enabled by coincident catalytic reactivities of FeCl3 for nonhydrolytic deacylation of N-acylsulfonamides and subsequent acylation of the resultant sulfonamides and can be conducted either stepwise or in a one-pot manner. GaCl3 and RuCl3·xH2O are similarly effective for the reaction. This method is mild, efficient, and operationally simple. A variety of functional groups such as halogeno, keto, nitro, cyano, ether, and ester are well tolerated, providing the transacylation products in good to excellent yields.
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Affiliation(s)
- Dayong Sang
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Bingqian Dong
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Kangkang Yu
- College of Biotechnology, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Juan Tian
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
- Hubei Provincial Key Laboratory of Drug Synthesis and Optimization, Jingmen, Hubei 448000, P. R. China
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2
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Amador R, Tahrioui A, Barreau M, Lesouhaitier O, Smietana M, Clavé G. N-Acylsulfonamide: a valuable moiety to design new sulfa drug analogues. RSC Med Chem 2023; 14:1567-1571. [PMID: 37593573 PMCID: PMC10429802 DOI: 10.1039/d3md00229b] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2023] [Accepted: 07/04/2023] [Indexed: 08/19/2023] Open
Abstract
Sulfonamides are the oldest class of antibiotics, discovered more than 80 years ago. They are still used today despite the appearance of drug resistance phenomena that limit their prescription. Since the discovery and use of the first sulfa drugs, many analogues have been synthesized in order to obtain new active molecules able to circumvent bacterial resistance. Structurally similar to sulfonamide, the N-acylsulfonamide group arouses interest in the field of medicinal chemistry due to specific physico-chemical properties. We report here the synthesis and antibacterial/antibiofilm activities of 18 sulfa drug analogues with an N-acylsulfonamide moiety. These derivatives were obtained efficiently by sulfo-click reactions between readily available thioacid and sulfonyl azide synthons.
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Affiliation(s)
- Romain Amador
- Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM 1919 route de Mende 34095 Montpellier France
| | - Ali Tahrioui
- Univ Rouen Normandie, Université Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-infectieuses (CBSA) UR 4312 F-76000 Rouen France
| | - Magalie Barreau
- Univ Rouen Normandie, Université Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-infectieuses (CBSA) UR 4312 F-76000 Rouen France
| | - Olivier Lesouhaitier
- Univ Rouen Normandie, Université Caen Normandie, Normandie Univ, Communication Bactérienne et Stratégies Anti-infectieuses (CBSA) UR 4312 F-76000 Rouen France
| | - Michael Smietana
- Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM 1919 route de Mende 34095 Montpellier France
| | - Guillaume Clavé
- Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM 1919 route de Mende 34095 Montpellier France
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3
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Amador R, Delpal A, Canard B, Vasseur JJ, Decroly E, Debart F, Clavé G, Smietana M. Facile access to 4'-( N-acylsulfonamide) modified nucleosides and evaluation of their inhibitory activity against SARS-CoV-2 RNA cap N7-guanine-methyltransferase nsp14. Org Biomol Chem 2022; 20:7582-7586. [PMID: 36156055 DOI: 10.1039/d2ob01569b] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N-Acylsulfonamides possess an additional carbonyl function compared to their sulfonamide analogues. Due to their unique physico-chemical properties, interest in molecules containing the N-acylsulfonamide moiety and especially nucleoside derivatives is growing in the field of medicinal chemistry. The recent renewal of interest in antiviral drugs derived from nucleosides containing a sulfonamide function has led us to evaluate the therapeutic potential of N-acylsulfonamide analogues. While these compounds are usually obtained by a difficult acylation of sulfonamides, we report here the easy and efficient synthesis of 20 4'-(N-acylsulfonamide) adenosine derivatives via the sulfo-click reaction. The target compounds were obtained from thioacid and sulfonyl azide synthons in excellent yields and were evaluated as potential inhibitors of the SARS-CoV-2 RNA cap N7-guanine-methyltransferase nsp14.
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Affiliation(s)
- Romain Amador
- Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM, 1919 route de Mende, 34095 Montpellier, France.
| | - Adrien Delpal
- Architecture et Fonction des Macromolécules Biologiques, Université d'Aix-Marseille, CNRS, 163 Avenue de Luminy, Marseille, France
| | - Bruno Canard
- Architecture et Fonction des Macromolécules Biologiques, Université d'Aix-Marseille, CNRS, 163 Avenue de Luminy, Marseille, France
| | - Jean-Jacques Vasseur
- Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM, 1919 route de Mende, 34095 Montpellier, France.
| | - Etienne Decroly
- Architecture et Fonction des Macromolécules Biologiques, Université d'Aix-Marseille, CNRS, 163 Avenue de Luminy, Marseille, France
| | - Françoise Debart
- Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM, 1919 route de Mende, 34095 Montpellier, France.
| | - Guillaume Clavé
- Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM, 1919 route de Mende, 34095 Montpellier, France.
| | - Michael Smietana
- Institut des Biomolécules Max Mousseron, Université de Montpellier, CNRS, ENSCM, 1919 route de Mende, 34095 Montpellier, France.
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4
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Sang D, Dong B, Liu Y, Tian J. Chemoselective Cleavage of Acylsulfonamides and Sulfonamides by Aluminum Halides. J Org Chem 2022; 87:3586-3595. [PMID: 35157468 DOI: 10.1021/acs.joc.1c03133] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The chemoselective cleavage of C-N bonds of amides, sulfonamides, and acylsulfonamides by aluminum halides is described. AlCl3 and AlI3 display complementary reactivities toward N-alkyl and N-acyl moieties. N-Alkylacylsulfonamides, secondary N-(tert-butyl)sulfonamides, and tertiary N-(tert-butyl)amides undergo N-dealkylation upon treatments with AlI3 generated in situ from aluminum and iodine in acetonitrile. In contrast, AlCl3 preferentially cleaves N-acyl groups of tertiary and secondary sulfonamides.
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Affiliation(s)
- Dayong Sang
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Bingqian Dong
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China.,School of Chemical Engineering and Pharmacy, Wuhan Institute of Technology, Wuhan, Hubei 430205, P. R. China
| | - Yunfeng Liu
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
| | - Juan Tian
- College of Chemical Engineering and Pharmacy, Jingchu University of Technology, Jingmen, Hubei 448000, P. R. China
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5
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Kaur N, Verma Y, Grewal P, Bhardwaj P, Devi M. Application of titanium catalysts for the syntheses of heterocycles. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1606922] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Meenu Devi
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
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6
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Andleeb H, Khan I, Franconetti A, Tahir MN, Simpson J, Hameed S, Frontera A. Diverse structural assemblies of U-shaped hydrazinyl-sulfonamides: experimental and theoretical analysis of non-covalent interactions stabilizing solid state conformations. CrystEngComm 2019. [DOI: 10.1039/c8ce01917g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The preparation and structures of five new U-shaped hydrazinyl-sulfonamides are reported.
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Affiliation(s)
- Hina Andleeb
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad-45320
- Pakistan
| | - Imtiaz Khan
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad-45320
- Pakistan
- School of Chemistry & Manchester Institute of Biotechnology
| | - Antonio Franconetti
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma de Mallorca (Baleares)
- Spain
| | | | - Jim Simpson
- Department of Chemistry
- University of Otago
- Dunedin
- New Zealand
| | - Shahid Hameed
- Department of Chemistry
- Quaid-i-Azam University
- Islamabad-45320
- Pakistan
| | - Antonio Frontera
- Departament de Química
- Universitat de les Illes Balears
- 07122 Palma de Mallorca (Baleares)
- Spain
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7
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Yang W, Huang D, Zeng X, Zhang J, Wang X, Hu Y. N-Sulfonyl acetylketenimine as a highly reactive intermediate for synthesis of N-Aroylsulfonamides. Tetrahedron 2019. [DOI: 10.1016/j.tet.2018.12.005] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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8
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Chen L, Luo G. Facile synthesis of acyl sulfonamides from carboxyic acids using the Mukaiyama reagent. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2018.12.030] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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9
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Alpaslan YB, Süleymanoğlu N, Ustabaş R, Ertürk AG, Gökce H. Spectroscopic characterization and density functional studies of new thiadiazole 1,1-dioxide compounds. J Mol Struct 2018. [DOI: 10.1016/j.molstruc.2018.04.063] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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10
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Benali N, Bougheloum C, Alioua S, Belghiche R, Messalhi A. EfficientN-acylation of sulfonamides using cesium salt of Wells–Dawson heteropolyacid as catalyst: Synthesis of newN-acyl sulfonamides and cyclic imides. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1535077] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Nesma Benali
- Advanced Materials Laboratory, Badji Mokhtar Annaba-University, Annaba, Algeria
| | - Chafika Bougheloum
- Advanced Materials Laboratory, Badji Mokhtar Annaba-University, Annaba, Algeria
| | - Sabrina Alioua
- Advanced Materials Laboratory, Badji Mokhtar Annaba-University, Annaba, Algeria
| | - Robila Belghiche
- Chemistry Inorganic Materials Laboratory, Badji Mokhtar Annaba-University, Annaba, Algeria
| | - Abdelrani Messalhi
- Advanced Materials Laboratory, Badji Mokhtar Annaba-University, Annaba, Algeria
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11
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Fang Y, Gu ZY, Wang SY, Yang JM, Ji SJ. Co-Catalyzed Synthesis of N-Sulfonylcarboxamides from Carboxylic Acids and Sulfonyl Azides. J Org Chem 2018; 83:9364-9369. [DOI: 10.1021/acs.joc.8b01300] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Yue Fang
- School of Pharmacy, Yancheng Teachers University, Yancheng 224051, China
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
- College of Chemical Engineering, Nanjing University of Technology, Nanjing 210009, China
| | - Zheng-Yang Gu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Shun-Yi Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
| | - Jin-Ming Yang
- School of Pharmacy, Yancheng Teachers University, Yancheng 224051, China
| | - Shun-Jun Ji
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science & Collaborative Innovation Center of Suzhou Nano Science and Technology, Soochow University, Suzhou 215123, China
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12
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Kaur N, Jangid NK, Sharma V. Metal- and nonmetal-catalyzed synthesis of five-membered S,N-heterocycles. J Sulphur Chem 2017. [DOI: 10.1080/17415993.2017.1415338] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali University, Banasthali, India
| | | | - Vivek Sharma
- Department of Chemistry, Banasthali University, Banasthali, India
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13
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Ammazzalorso A, De Filippis B, Giampietro L, Amoroso R. N-acylsulfonamides: Synthetic routes and biological potential in medicinal chemistry. Chem Biol Drug Des 2017. [PMID: 28632928 DOI: 10.1111/cbdd.13043] [Citation(s) in RCA: 60] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Sulfonamide is a common structural motif in naturally occurring and synthetic medicinal compounds. The rising interest in sulfonamides and N-acyl derivatives is attested by the large number of drugs and lead compounds identified in last years, explored in different fields of medicinal chemistry and showing biological activity. Many acylsulfonamide derivatives were designed and synthesized as isosteres of carboxylic acids, being the characteristics of these functional groups very close. Starting from chemical routes to N-acylsulfonamides, this review explores compounds of pharmaceutical interest, developed as enzymatic inhibitors or targeting receptors.
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Affiliation(s)
| | | | | | - Rosa Amoroso
- Dipartimento di Farmacia, Università G. d'Annunzio, Chieti, Italy
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14
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Investigation of tautomeric behavior of 3-amino-4-[4-(dimethylamino)phenyl]-4,5-dihydro-1,2,5-thiadiazole 1,1-dioxide using Fourier Transform infrared and nuclear magnetic resonance spectroscopic methods: A density functional theory supported study. Chem Phys Lett 2016. [DOI: 10.1016/j.cplett.2016.08.047] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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15
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Ghasemi MH, Kowsari E, Hosseini SK. Catalytic activity of magnetic Fe3O4@Diatomite earth and acetic acid for the N-acylation of sulfonamides. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2015.12.044] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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16
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Ammazzalorso A, Tricca ML, Bruno I, De Filippis B, Di Matteo M, Fantacuzzi M, Giampietro L, Maccallini C, Mollica A, Amoroso R. Titanium-Promoted Acylation of Sulfonamides toN-Acylsulfonamide PPARαAntagonists. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2015.1092552] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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17
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Boufas W, Dupont N, Berredjem M, Berrezag K, Becheker I, Berredjem H, Aouf NE. Synthesis and antibacterial activity of sulfonamides. SAR and DFT studies. J Mol Struct 2014. [DOI: 10.1016/j.molstruc.2014.05.066] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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18
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Xie W, Yang J, Wang B, Li B. Regioselective Ortho Olefination of Aryl Sulfonamide via Rhodium-Catalyzed Direct C–H Bond Activation. J Org Chem 2014; 79:8278-87. [DOI: 10.1021/jo5015239] [Citation(s) in RCA: 64] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Weijia Xie
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Jie Yang
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Baiquan Wang
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
- State
Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People’s Republic of China
| | - Bin Li
- State
Key Laboratory of Element-Organic Chemistry, Synergetic Innovation
Center of Chemical Science and Engineering, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
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19
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Bouchareb F, Boufas W, Cheloufi H, Berredjem M, Aouf NE. An Efficient Method for the Synthesis of Novel N-acylsulfonamides Using Tin (IV) Chloride as Catalysts. PHOSPHORUS SULFUR 2014. [DOI: 10.1080/10426507.2013.843000] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Fouzia Bouchareb
- LCOA, Bioorganic Chemistry Group, Chemistry Department, Sciences Faculty, Badji Mokhtar University-Annaba, BP 12, Annaba 23000, Algeria
| | - Wahida Boufas
- LCOA, Bioorganic Chemistry Group, Chemistry Department, Sciences Faculty, Badji Mokhtar University-Annaba, BP 12, Annaba 23000, Algeria
| | - Hadjer Cheloufi
- LCOA, Bioorganic Chemistry Group, Chemistry Department, Sciences Faculty, Badji Mokhtar University-Annaba, BP 12, Annaba 23000, Algeria
| | - Malika Berredjem
- LCOA, Bioorganic Chemistry Group, Chemistry Department, Sciences Faculty, Badji Mokhtar University-Annaba, BP 12, Annaba 23000, Algeria
| | - Nour-Eddine Aouf
- LCOA, Bioorganic Chemistry Group, Chemistry Department, Sciences Faculty, Badji Mokhtar University-Annaba, BP 12, Annaba 23000, Algeria
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20
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Taylor JE, Jones MD, Williams JMJ, Bull SD. N-Acyl DBN Tetraphenylborate Salts as N-Acylating Agents. J Org Chem 2012; 77:2808-18. [DOI: 10.1021/jo202647f] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- James E. Taylor
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | - Matthew D. Jones
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
| | | | - Steven D. Bull
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, U.K
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21
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ZnO and ZnO-nanoparticles: Efficient and reusable heterogeneous catalysts for one-pot synthesis of N-acylsulfonamides and sulfonate esters. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.molcata.2011.09.010] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Erb J, Paull DH, Dudding T, Belding L, Lectka T. From bifunctional to trifunctional (tricomponent nucleophile-transition metal-lewis acid) catalysis: the catalytic, enantioselective α-fluorination of acid chlorides. J Am Chem Soc 2011; 133:7536-46. [PMID: 21513338 PMCID: PMC3432319 DOI: 10.1021/ja2014345] [Citation(s) in RCA: 76] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We report in full detail our studies on the catalytic, asymmetric α-fluorination of acid chlorides, a practical method that produces an array of α-fluorocarboxylic acid derivatives in which improved yield and virtually complete enantioselectivity are controlled through electrophilic fluorination of a ketene enolate intermediate. We discovered, for the first time, that a third catalyst, a Lewis acidic lithium salt, could be introduced into a dually activated system to amplify yields of aliphatic products, primarily through activation of the fluorinating agent. Through our mechanistic studies (based on kinetic data, isotopic labeling, spectroscopic measurements, and theoretical calculations) we were able to utilize our understanding of this "trifunctional" reaction to optimize the conditions and obtain new products in good yield and excellent enantioselectivity.
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Affiliation(s)
- Jeremy Erb
- Department of Chemistry, New Chemistry Building, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland, 21218
| | - Daniel H. Paull
- Department of Chemistry, New Chemistry Building, Johns Hopkins University, 3400 North Charles Street, Baltimore, Maryland, 21218
| | - Travis Dudding
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada L2S 3A1
| | - Lee Belding
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada L2S 3A1
| | - Thomas Lectka
- Department of Chemistry, Brock University, 500 Glenridge Avenue, St. Catharines, Ontario, Canada L2S 3A1
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23
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Lian X, Fu S, Ma T, Li S, Zeng W. An efficient FeCl3-promoted O-alkyl cleavage of esters to carboxylic acids. Appl Organomet Chem 2011. [DOI: 10.1002/aoc.1784] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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