1
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Zhou J, Huang X, Yu X, Yang L, Han JY, Lhazom T, Cui HL. HCl/DMSO/HFIP-Mediated Chlorination of Pyrrolo[2,1- a]isoquinolines and Other Electron-Rich Heteroarenes. J Org Chem 2024; 89:9789-9799. [PMID: 38920085 DOI: 10.1021/acs.joc.4c00151] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/27/2024]
Abstract
An efficient oxidative chlorination of pyrrolo[2,1-a]isoquinolines has been established using HCl (aq) as the chlorine source and DMSO as the terminal oxidant in HFIP at ambient temperature. A variety of chlorinated pyrrolo[2,1-a]isoquinoline derivatives have been prepared readily in 23 to 99% yields. This chlorination strategy can be expanded to the functionalization of other electron-rich heteroarenes including substituted pyrroles, indoles, and naphthols.
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Affiliation(s)
- Jing Zhou
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
| | - Xiang Huang
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
- School of Chemistry and Chemical Engineering, Chongqing University of Science and Technology, Chongqing 401331, P. R. China
| | - Xin Yu
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
| | - Liu Yang
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
| | - Jia-Yi Han
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
| | - Tsesong Lhazom
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
| | - Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Avenue, Yongchuan, Chongqing 402160, P. R. China
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2
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Edder Y, Louchachha I, Faris A, Maatallah M, Azzaoui K, Zerrouk M, Saadi M, El Ammari L, Berraho M, Merzouki M, Boualy B, Hammouti B, Sabbahi R, Karim A, Alanazi MM, Ayerdi Gotor A, Rhazi L. Synthesis of Novel Nitro-Halogenated Aryl-Himachalene Sesquiterpenes from Atlas Cedar Oil Components: Characterization, DFT Studies, and Molecular Docking Analysis against Various Isolated Smooth Muscles. Molecules 2024; 29:2894. [PMID: 38930959 PMCID: PMC11206413 DOI: 10.3390/molecules29122894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2024] [Revised: 05/14/2024] [Accepted: 06/13/2024] [Indexed: 06/28/2024] Open
Abstract
We report the synthesis of two novel halogenated nitro-arylhimachalene derivatives: 2-bromo-3,5,5,9-tetramethyl-1-nitro-6,7,8,9-tetrahydro-5H-benzo[7]annulene (bromo-nitro-arylhimachalene) and 2-chloro-3,5,5,9-tetramethyl-1,4-dinitro-6,7,8,9-tetrahydro-5H-benzo[7]annulene (chloro-dinitro-arylhimachalene). These compounds were derived from arylhimachalene, an important sesquiterpene component of Atlas cedar essential oil, via a two-step halogenation and nitration process. Characterization was performed using 1H and 13C NMR spectrometry, complemented by X-ray structural analysis. Quantum chemical calculations employing density functional theory (DFT) with the Becke3-Lee-Yang-parr (B3LYP) functional and a 6-31++G(d,p) basis set were conducted. The optimized geometries of the synthesized compounds were consistent with X-ray structure data. Frontier molecular orbitals and molecular electrostatic potential (MEP) profiles were identified and discussed. DFT reactivity indices provided insights into the compounds' behaviors. Moreover, Hirshfeld surface and 2D fingerprint analyses revealed significant intermolecular interactions within the crystal structures, predominantly H-H and H-O contacts. Molecular docking studies demonstrate strong binding affinities of the synthesized compounds to the active site of protein 7B2W, suggesting potential therapeutic applications against various isolated smooth muscles and neurotransmitters.
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Affiliation(s)
- Youssef Edder
- Laboratory of Molecular Chemistry, Faculty of Sciences Semlalia, Cadi Ayyad University, BP 2390, Marrakech 40001, Morocco; (I.L.); (A.F.); (M.M.); (A.K.)
| | - Issam Louchachha
- Laboratory of Molecular Chemistry, Faculty of Sciences Semlalia, Cadi Ayyad University, BP 2390, Marrakech 40001, Morocco; (I.L.); (A.F.); (M.M.); (A.K.)
| | - Abdelmajid Faris
- Laboratory of Molecular Chemistry, Faculty of Sciences Semlalia, Cadi Ayyad University, BP 2390, Marrakech 40001, Morocco; (I.L.); (A.F.); (M.M.); (A.K.)
| | - Mohamed Maatallah
- Laboratory of Molecular Chemistry, Faculty of Sciences Semlalia, Cadi Ayyad University, BP 2390, Marrakech 40001, Morocco; (I.L.); (A.F.); (M.M.); (A.K.)
| | - Khalil Azzaoui
- Engineering Laboratory of Organometallic, Molecular Materials, and Environment, Faculty of Sciences, University Sidi Mohamed Ben Abdellah, Fes 30000, Morocco; (K.A.); (M.Z.)
- Euromed Research Center, Euromed Polytechnic School, Euromed University of Fes, Fes 30030, Morocco;
| | - Mohammed Zerrouk
- Engineering Laboratory of Organometallic, Molecular Materials, and Environment, Faculty of Sciences, University Sidi Mohamed Ben Abdellah, Fes 30000, Morocco; (K.A.); (M.Z.)
| | - Mohamed Saadi
- Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des Matériaux, Faculty of Science, Mohammed V University in Rabat, Avenue Ibn Battouta, BP 1014, Rabat 10000, Morocco; (M.S.); (L.E.A.)
| | - Lahcen El Ammari
- Laboratoire de Chimie Appliquée des Matériaux, Centre des Sciences des Matériaux, Faculty of Science, Mohammed V University in Rabat, Avenue Ibn Battouta, BP 1014, Rabat 10000, Morocco; (M.S.); (L.E.A.)
| | - Moha Berraho
- Laboratoire de Chimie des Substances Naturelles, Unité Associée au CNRST (URAC16), Faculty of Sciences Semlalia, Cadi Ayyad University, BP 2390, Marrakech 40001, Morocco;
| | - Mohammed Merzouki
- Laboratory of Applied Chemistry Environment (LCAE-ECOMP), Faculty of Science Oujda, University Mohammed First, Oujda 60000, Morocco;
| | - Brahim Boualy
- Multidisciplinary Research and Innovation Laboratory, Faculté Polydisciplinaire de Khouribga, Université Sultan Moulay Slimane de Beni-Mellal, Khouribga 23000, Morocco;
| | - Belkheir Hammouti
- Euromed Research Center, Euromed Polytechnic School, Euromed University of Fes, Fes 30030, Morocco;
| | - Rachid Sabbahi
- Research Team in Science and Technology, Higher School of Technology, Ibn Zohr University, Laayoune 70000, Morocco;
| | - Abdallah Karim
- Laboratory of Molecular Chemistry, Faculty of Sciences Semlalia, Cadi Ayyad University, BP 2390, Marrakech 40001, Morocco; (I.L.); (A.F.); (M.M.); (A.K.)
| | - Mohammed M. Alanazi
- Department of Pharmaceutical Chemistry, College of Pharmacy, King Saud University, Riyadh 11451, Saudi Arabia;
| | - Alicia Ayerdi Gotor
- Institut Polytechnique UniLaSalle, AGHYLE, UP 2018.C101, UniLaSalle, 19 Rue Pierre Waguet, BP 30313, 60026 Beauvais, France;
| | - Larbi Rhazi
- Institut Polytechnique UniLaSalle, Université d’Artois, ULR 7519, 19 Rue Pierre Waguet, BP 30313, 60026 Beauvais, France
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Kachore A, Aggarwal V, Bala E, Singh H, Guleria S, Sharma S, Pathan S, Saima, Selvaraj M, Assiri MA, Kumar Verma P. Recent Advances in Direct Regioselective C-H Chlorination at Aromatic and Aliphatic. Chem Asian J 2024:e202400391. [PMID: 38825568 DOI: 10.1002/asia.202400391] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2024] [Revised: 05/31/2024] [Accepted: 05/31/2024] [Indexed: 06/04/2024]
Abstract
Direct installation of key functionalities in a molecule through C-H bond activation is one of the thrust areas as well as challenging task in organic synthesis. Particularly, introduction of chlorine in a molecule imparts additional benefits for further functionalizations as well as improves the electronic behaviour such as lipophilicity and polarity towards drug development process. The chlorinated molecules have also been established as efficient biologically relevant scaffolds. Current manuscript has been focused on the direct installation of the chlorine atom at various aromatic and aliphatic positions to produce functional molecules. The key highlight of the manuscript belongs to the site selectivity (regioselectivity) for the installation of chlorine functionality. Manuscript describes the advanced methods developed for the direct C-H chlorination reactions and further simplified for the chlorination reactions at various positions including aromatic (o-, m-, and p-), benzylic, heteroaromatic, and aliphatic positions. Directing groups (DGs) and the coordination with the catalyst is the key for the enhancement of regioselectivities during direct C-H chlorination reactions.
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Affiliation(s)
- Ankit Kachore
- School of Advanced Chemical Sciences, Shoolini University of Biotechnology and Management Sciences, 173229, Solan, H.P., India
| | - Varun Aggarwal
- School of Advanced Chemical Sciences, Shoolini University of Biotechnology and Management Sciences, 173229, Solan, H.P., India
| | - Ekta Bala
- School of Advanced Chemical Sciences, Shoolini University of Biotechnology and Management Sciences, 173229, Solan, H.P., India
| | - Hemant Singh
- School of Advanced Chemical Sciences, Shoolini University of Biotechnology and Management Sciences, 173229, Solan, H.P., India
| | - Saksham Guleria
- School of Advanced Chemical Sciences, Shoolini University of Biotechnology and Management Sciences, 173229, Solan, H.P., India
| | - Sakshi Sharma
- School of Advanced Chemical Sciences, Shoolini University of Biotechnology and Management Sciences, 173229, Solan, H.P., India
| | - Sameer Pathan
- School of Advanced Chemical Sciences, Shoolini University of Biotechnology and Management Sciences, 173229, Solan, H.P., India
| | - Saima
- School of Advanced Chemical Sciences, Shoolini University of Biotechnology and Management Sciences, 173229, Solan, H.P., India
| | - Manickam Selvaraj
- Department of Chemistry, Faculty of Science, King Khalid University, PO Box 9004, 61413, Abha, Saudi Arabia
- Research Centre for Advanced Materials Science (RCAMS), King Khalid University, PO Box 9004, Abha, 61413, Saudi Arabia
| | - Mohammed A Assiri
- Department of Chemistry, Faculty of Science, King Khalid University, PO Box 9004, 61413, Abha, Saudi Arabia
- Research Centre for Advanced Materials Science (RCAMS), King Khalid University, PO Box 9004, Abha, 61413, Saudi Arabia
| | - Praveen Kumar Verma
- School of Advanced Chemical Sciences, Shoolini University of Biotechnology and Management Sciences, 173229, Solan, H.P., India
- Department of Oral and Maxillofacial Surgery, Saveetha Dental College and Hospitals, SIMATS, Saveetha University, 600077, Chennai, Tamil Nadu, India
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4
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Zhao Y, Koster van Groos PG, Thakur N, Fuller ME, Soto A, Hatzinger PB. Formation of volatile chlorinated and brominated products during low temperature thermal decomposition of the representative PFAS perfluorohexane sulfonate (PFHxS) in the presence of NaCl and NaBr. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 348:123782. [PMID: 38484959 DOI: 10.1016/j.envpol.2024.123782] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 02/26/2024] [Accepted: 03/11/2024] [Indexed: 04/07/2024]
Abstract
Per- and polyfluoroalkyl substances (PFAS) are synthetic organofluorine compounds known for their chemical and physical stability as well as their wide range of uses. Some PFAS are widely distributed in the environment, leading to concerns related to both environmental and human health. High temperature thermal treatment (i.e., incineration) has been utilized for PFAS treatment, but this requires significant infrastructure and energy, prompting interest in lower temperature approaches that may still lead to efficient destruction. Lower treatment temperatures, however, increase the potential for incomplete PFAS mineralization and formation of volatile organofluorine (VOF) products. Herein, we report the formation of novel VOF products that include chlorinated and brominated compounds during the thermal treatment of potassium perfluorohexane sulfonate (PFHxS), a representative perfluoroalkyl acid (PFAA). By comparing the gas chromatography-mass spectrometry (GC-MS) results of known VOF stocks to evolved VOF during thermal treatment of PFAS, the formation of perfluorohexyl chloride and perfluorohexyl bromide was observed when PFHxS was heated at temperatures between 275 and 475 °C in the presence of NaCl and NaBr, respectively. To our knowledge, this is the first report of chlorinated or brominated VOF products during thermal treatment of a PFAA. These findings suggest that a range of mixed halogenated VOF may form during thermal treatment of PFAS at relatively low temperature (e.g., 500 °C) and that these can be a function of salts present in the matrix.
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Affiliation(s)
- Yuwei Zhao
- Biotechnology Development and Applications Group, APTIM, 17 Princess Rd. Lawrenceville, NJ, 08648, USA.
| | - Paul G Koster van Groos
- Biotechnology Development and Applications Group, APTIM, 17 Princess Rd. Lawrenceville, NJ, 08648, USA
| | - Nikita Thakur
- Biotechnology Development and Applications Group, APTIM, 17 Princess Rd. Lawrenceville, NJ, 08648, USA
| | - Mark E Fuller
- Biotechnology Development and Applications Group, APTIM, 17 Princess Rd. Lawrenceville, NJ, 08648, USA
| | - Anthony Soto
- Biotechnology Development and Applications Group, APTIM, 17 Princess Rd. Lawrenceville, NJ, 08648, USA
| | - Paul B Hatzinger
- Biotechnology Development and Applications Group, APTIM, 17 Princess Rd. Lawrenceville, NJ, 08648, USA
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Chillal AS, Bhawale RT, Kshirsagar UA. Regioselective C(sp 2)-H halogenation of pyrazolo[1,5- a]pyrimidines facilitated by hypervalent iodine(iii) under aqueous and ambient conditions. RSC Adv 2024; 14:13095-13099. [PMID: 38655480 PMCID: PMC11036372 DOI: 10.1039/d4ra02090a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Accepted: 04/15/2024] [Indexed: 04/26/2024] Open
Abstract
An efficient and mild approach has been developed for the regio-selective direct C3 halogenation of pyrazolo[1,5-a]pyrimidines employing readily available potassium halide salts and a hypervalent iodine(iii) reagent at ambient temperature. The protocol is both practical and environmentally friendly, utilizing water as a green solvent, potassium halides as an inexpensive and bench stable halogen source and PIDA as a non-toxic reagent, enabling clean and efficient halogenation at room temperature. The procedure yields a range of C3 halogenated pyrazolo[1,5-a]pyrimidines in good to excellent yields. Mechanistic studies suggest the involvement of electrophilic substitution mechanism in the halogenation process.
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Affiliation(s)
- Abhinay S Chillal
- Department of Chemistry, Indian Institute of Technology Indore Khandwa Road Indore 453552 India
| | - Rajesh T Bhawale
- Department of Chemistry, Indian Institute of Technology Indore Khandwa Road Indore 453552 India
| | - Umesh A Kshirsagar
- Department of Chemistry, Indian Institute of Technology Indore Khandwa Road Indore 453552 India
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6
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Cui HL. Recent advances in oxidative chlorination. Org Biomol Chem 2024; 22:1580-1601. [PMID: 38312070 DOI: 10.1039/d3ob02012f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2024]
Abstract
Considering the wide occurrence and extensive application of organic chlorides in many research fields, the development of easy, practical and green chlorination methodologies is much needed. In the oxidative chlorination strategy, active chlorinating species can be in situ formed by the interaction of easily accessible chlorides such as NaCl, HCl, KCl, CHCl3, etc. and suitable oxidants. Among the established chlorination approaches, this strategy is an attractive one as it features the use of readily available, cheap and safe inorganic or organic chlorides, good atom economy of chlorine, and multiple choices of oxidants. This review summarizes the representative methodologies in the field of oxidative chlorination, covering 2013 to 2023.
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Affiliation(s)
- Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing, 402160, PR China.
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7
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Engbers S, Guo Y, Klein JEMN. A Porphyrin Iron(III) π-Dication Species and its Relevance in Catalyst Design for the Umpolung of Nucleophiles. Angew Chem Int Ed Engl 2023; 62:e202313006. [PMID: 37751302 DOI: 10.1002/anie.202313006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2023] [Revised: 09/16/2023] [Accepted: 09/18/2023] [Indexed: 09/27/2023]
Abstract
Isoporphyrins have recently been identified as remarkable species capable of turning the nucleophile attached to the porphyrin ring into an electrophile, thereby providing umpolung of reactivity (Inorg. Chem. 2022, 61, 8105-8111). They are generated by nucleophilic attack on an iron(III) π-dication, a class of species that has received scant attention. Here, we explore the effect of the porphyrin meso-substituent and report a iron(III) π-dication bearing the meso-tetraphenylporphyrin (TPP) ligand. We provide an extensive study of the species by UV/Vis absorption, 2 H NMR, EPR, applied field Mössbauer, and resonance Raman spectroscopy. We further explore the system's highly dynamic and tunable properties and address the nature of the axial ligands as well as the conformation of the porphyrin ring. The insights presented are essential for the rational design of catalysts for the umpolung of nucleophiles. Such catalytic avenues could for example provide a novel method for electrophilic chlorinations. We further examine the importance of electronic tuning of the porphyrin by nature of the meso-substituent as a factor in catalyst design.
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Affiliation(s)
- Silène Engbers
- Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, Faculty of Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG, Groningen (The, Netherlands
| | - Yisong Guo
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Ave, Pittsburgh, Pennsylvania, 15213, United States
| | - Johannes E M N Klein
- Molecular Inorganic Chemistry, Stratingh Institute for Chemistry, Faculty of Science and Engineering, University of Groningen, Nijenborgh 4, 9747 AG, Groningen (The, Netherlands
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8
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Cui HL, Chen XH. POCl 3/Sulfoxide and AcCl/Sulfoxide Mediated Chlorination of Pyrrolo[2,1- a]isoquinolines. J Org Chem 2023; 88:11935-11944. [PMID: 37550603 DOI: 10.1021/acs.joc.3c01200] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/09/2023]
Abstract
We have developed an efficient chlorination of pyrrolo[2,1-a]isoquinoline derivatives using POCl3 as the chlorine source and tetramethylene sulfoxide as a promoter. A series of pyrrolo[2,1-a]isoquinolines, polysubstituted pyrroles, and naphthols have been readily chlorinated under mild reaction conditions (26 examples, up to >99% yield). AcCl can also act as the chlorine source competently in this chlorination reaction.
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Affiliation(s)
- Hai-Lei Cui
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P. R. China
| | - Xiao-Hui Chen
- Laboratory of Asymmetric Synthesis, College of Chemistry and Environmental Engineering, Chongqing University of Arts and Sciences, 319 Honghe Ave., Yongchuan, Chongqing 402160, P. R. China
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9
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Xiang JC, Wang JW, Yuan P, Ma JT, Wu AX, Liao ZX. Switching Over of the Chemoselectivity: I 2-DMSO-Enabled α,α-Dichlorination of Functionalized Methyl Ketones. J Org Chem 2022; 87:15101-15113. [PMID: 36349364 DOI: 10.1021/acs.joc.2c01591] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Abstract
Precise control of the chemoselectivity of the halogenation of a substrate equipped with multiple nucleophilic sites is highly demanding and challenging. Most reported chlorinations of methyl ketones show poor compatibility or even exclusive selectivity toward electron-rich arene, olefin, and alkyne residues. This is attributed to the direct or in situ employment of electrophilic Cl2/Cl+ species. Here, we reported that, even bearing those competitive residues, methyl ketones can still undergo dichlorination to afford α,α-dichloroketones in a chemo-specific manner. Enabled by the I2-dimethyl sulfoxide catalytic system, in which hydrochloric acid only acts as a nucleophilic Cl- donor, this straightforward dichlorination reaction is safe and operator-friendly and has high atomic economy, giving access to structurally diverse α,α-dichloroketones in good yields and with good functional-group tolerance.
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Affiliation(s)
- Jia-Chen Xiang
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering and Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing 211189, China
| | - Jia-Wei Wang
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering and Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing 211189, China
| | - Peng Yuan
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering and Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing 211189, China
| | - Jin-Tian Ma
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, P. R. China
| | - Zhi-Xin Liao
- Department of Pharmaceutical Engineering, School of Chemistry and Chemical Engineering and Jiangsu Province Hi-Tech Key Laboratory for Biomedical Research, Southeast University, Nanjing 211189, China
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10
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Dağalan Z, Koçak R, Daştan A, Nişancı B. Selectfluor and TBAX (Cl, Br) Mediated Oxidative Chlorination and Bromination of Olefins. Org Lett 2022; 24:8261-8264. [PMID: 36129307 PMCID: PMC9680025 DOI: 10.1021/acs.orglett.2c02627] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
![]()
Herein, we report
the first metal-free and molecular halogen reagent-free
dihomohalogenation methodology by using Selectfluor as an oxidant
and tetrabutylammonium bromide/chloride salts as a halogen source.
This effective strategy provides various fluorine-free halogenated
products easily in quantitative yields from alkenes, alkynes, and
natural products.
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Affiliation(s)
- Ziya Dağalan
- Department of Chemistry, Faculty of Sciences, Ataturk University, Erzurum 25240, Turkey
| | - Ramazan Koçak
- Department of Chemistry, Faculty of Sciences, Ataturk University, Erzurum 25240, Turkey
| | - Arif Daştan
- Department of Chemistry, Faculty of Sciences, Ataturk University, Erzurum 25240, Turkey
| | - Bilal Nişancı
- Department of Chemistry, Faculty of Sciences, Ataturk University, Erzurum 25240, Turkey
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Synthetic Access to Aromatic α-Haloketones. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27113583. [PMID: 35684526 PMCID: PMC9182500 DOI: 10.3390/molecules27113583] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/22/2022] [Revised: 05/19/2022] [Accepted: 05/20/2022] [Indexed: 11/24/2022]
Abstract
α-Haloketones play an essential role in the synthesis of complex N-, S-, O-heterocycles; of which some exhibit a remarkable biological activity. Research further illustrated that α-bromo-, α-chloro-, and α-iodoketones are key precursors for blockbuster pharmacological compounds. Over the past twenty years, substantial advances have been made in the synthesis of these industrially relevant building blocks. Efforts have focused on rendering the synthetic protocols greener, more effective and versatile. In this survey, we summarised and thoroughly evaluated the progress of the field, established in the past two decades, in terms of generality, efficacy and sustainability.
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12
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Detenchuk EA, Mazur DM, Latkin TB, Lebedev AT. Halogen substitution reactions of halobenzenes during water disinfection. CHEMOSPHERE 2022; 295:133866. [PMID: 35134400 DOI: 10.1016/j.chemosphere.2022.133866] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/24/2021] [Revised: 01/31/2022] [Accepted: 02/02/2022] [Indexed: 06/14/2023]
Abstract
Although being successfully applied all over the world for more than 100 years water disinfection by means of chlorination possesses certain drawbacks, first of all formation of hazardous disinfection by-products (DBP). Aromatic halogenated DBPs significantly contribute to the total organic halogen and developmental toxicity of chlorinated water. The present study deals with investigation of possible substitution of one halogen for another in aromatic substrates in conditions of aqueous chlorination/bromination. The reaction showed high yields especially in case of substrates with proper position of an activating group in the aromatic ring. Thus, ipso-substitution of iodine by chlorine is the main process of aqueous chlorination of para-iodoanisole. Oxidation of the eliminating I+ ions into non-reactive IO3- species facilitates the substitution. Oxidation of eliminating Br+ is not so easy while being highly reactive it attacks initial substrates forming polybrominated products. Substitution of iodine and bromine by chlorine may also involve migration of electrophilic species inside the aromatic ring resulting in larger number of isomeric DBPs. Substitution of chlorine by bromine in aromatic substrates during aqueous bromination is not so pronounced as substitution of bromine by chlorine in aqueous chlorination due to higher electronegativity of chlorine atom. However, formation of some chlorine-free polybrominated products proves possibility of that process.
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Affiliation(s)
- E A Detenchuk
- Lomonosov Moscow State University, Chemistry Department, Leninskie Gory 1/3, Moscow, 119991, Russia
| | - D M Mazur
- Lomonosov Moscow State University, Chemistry Department, Leninskie Gory 1/3, Moscow, 119991, Russia; Lomonosov Northern (Arctic) Federal University, Core Facility "Arktika", nab. Severnoy Dviny 17, Arkhangelsk, 163002, Russia
| | - T B Latkin
- Lomonosov Northern (Arctic) Federal University, Core Facility "Arktika", nab. Severnoy Dviny 17, Arkhangelsk, 163002, Russia
| | - A T Lebedev
- Lomonosov Moscow State University, Chemistry Department, Leninskie Gory 1/3, Moscow, 119991, Russia; Lomonosov Northern (Arctic) Federal University, Core Facility "Arktika", nab. Severnoy Dviny 17, Arkhangelsk, 163002, Russia.
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13
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Liu H, Sha Q. ZnCl2/PhI=O Mediated Selective ortho-Chlorination of Amides. LETT ORG CHEM 2022. [DOI: 10.2174/1570178618666210624115748] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Abstract:
A new ortho-chlorination system consisting of zinc(II) and hypervalent iodine(III) reagent
was developed for ortho-chlorination of amides, and the desired products were obtained in
moderate to good yields (38-85%). This highly facile and convenient methodology is tolerant of
aromatic amide and alkyl amide with diverse substituted groups. A plausible mechanism has
been illustrated, in which carbocation rearrangement and metal salt coordinate facilitated orthochlorination
are involved.
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Affiliation(s)
- Haixuan Liu
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural
University, Nanjing 210095, P.R. China
- Sanhome R&D Centre, Nanjing Sanhome Pharmaceutical Co., Ltd., Nanjing
211135, P.R. China
| | - Qiang Sha
- Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural
University, Nanjing 210095, P.R. China
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14
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Mal S, Jana M, Sarkar S. Recent Update on Transition Metal‐Free C(sp
2
)−H Bond Halogenation in (Hetero) Arenes. ChemistrySelect 2021. [DOI: 10.1002/slct.202102956] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Sourav Mal
- Department of Chemistry University of Kalyani Kalyani 741235 West Bengal India
| | - Manoranjan Jana
- Department of Chemistry University of Kalyani Kalyani 741235 West Bengal India
| | - Satinath Sarkar
- Department of Chemistry University of Kalyani Kalyani 741235 West Bengal India
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15
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Lin X, Zeng C, Liu C, Fang Z, Guo K. C-5 selective chlorination of 8-aminoquinoline amides using dichloromethane. Org Biomol Chem 2021; 19:1352-1357. [PMID: 33475130 DOI: 10.1039/d0ob02055a] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
An oxidant-free electrochemical regioselective chlorination of 8-aminoquinoline amides at ambient temperature in batch and continuous-flow was achieved. Inert DCM was used as the chlorinating reagent. Owing to the continuous-flow setup, the reaction scale up can be achieved conveniently with higher productivity. Moreover, this method has good position-control, and water and air tolerance. Costly quaternary ammonium salts were avoided. Radical-trapping, H/D exchange, KIE and cyclic voltammetry experiments were conducted to gain insight into the reaction mechanism.
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Affiliation(s)
- Xinxin Lin
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China.
| | - Cuilian Zeng
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China.
| | - Chengkou Liu
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China.
| | - Zheng Fang
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China.
| | - Kai Guo
- College of Biotechnology and Pharmaceutical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China. and State Key Laboratory of Materials-Oriented Chemical Engineering, Nanjing Tech University, 30 Puzhu Rd S., Nanjing 211816, China
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16
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Mamontov A, Martin-Mingot A, Métayer B, Karam O, Zunino F, Bouazza F, Thibaudeau S. Complementary Site-Selective Halogenation of Nitrogen-Containing (Hetero)Aromatics with Superacids. Chemistry 2020; 26:10411-10416. [PMID: 32212405 DOI: 10.1002/chem.202000902] [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: 02/20/2020] [Indexed: 12/11/2022]
Abstract
Site-selective functionalization of arenes that is complementary to classical aromatic substitution reactions remains a long-standing quest in organic synthesis. Exploiting the generation of halenium ion through oxidative process and the protonation of the nitrogen containing function in HF/SbF5 , the chlorination and iodination of classically inert Csp2 -H bonds of aromatic amines occurs. Furthermore, the superacid-promoted (poly)protonation of the molecules acts as a protection, favoring the late-stage selective halogenation of natural alkaloids and active pharmaceutical ingredients.
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Affiliation(s)
- Alexander Mamontov
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Superacid Group - Organic Synthesis Team, 4 rue Michel Brunet, TSA 51106, 86073, Poitiers Cedex 9, France.,@rtMolecule, 1 rue Georges Bonnet, Bâtiment B37, 86000, Poitiers, France
| | - Agnès Martin-Mingot
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Superacid Group - Organic Synthesis Team, 4 rue Michel Brunet, TSA 51106, 86073, Poitiers Cedex 9, France
| | - Benoit Métayer
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Superacid Group - Organic Synthesis Team, 4 rue Michel Brunet, TSA 51106, 86073, Poitiers Cedex 9, France.,@rtMolecule, 1 rue Georges Bonnet, Bâtiment B37, 86000, Poitiers, France
| | - Omar Karam
- @rtMolecule, 1 rue Georges Bonnet, Bâtiment B37, 86000, Poitiers, France
| | - Fabien Zunino
- @rtMolecule, 1 rue Georges Bonnet, Bâtiment B37, 86000, Poitiers, France
| | - Fodil Bouazza
- @rtMolecule, 1 rue Georges Bonnet, Bâtiment B37, 86000, Poitiers, France
| | - Sébastien Thibaudeau
- Université de Poitiers, UMR-CNRS 7285, IC2MP, Superacid Group - Organic Synthesis Team, 4 rue Michel Brunet, TSA 51106, 86073, Poitiers Cedex 9, France
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17
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Ji Y, Li H, Wang Y, Zhang Z, Wu Y. Sulfoxide‐Promoted Chlorination of Indoles and Electron‐Rich Arenes with Chlorine as Nucleophile. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Yuan‐Zhao Ji
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
| | - Hui‐Jing Li
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
| | - Yi‐Ruo Wang
- Weihai NO.1 High School 75 Wenhuazhong Road Weihai 264200 People's Republic of China
| | - Zheng‐Yan Zhang
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
| | - Yan‐Chao Wu
- School of Marine Science and TechnologyHarbin Institute of Technology Weihai 264209 People's Republic of China
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18
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Kumar S, Padala K. The recent advances in K2S2O8-mediated cyclization/coupling reactions via an oxidative transformation. Chem Commun (Camb) 2020; 56:15101-15117. [DOI: 10.1039/d0cc06036d] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Recently the K2S2O8 mediated cyclization/coupling reactions to construct carbon–carbon/carbon–heteroatom bond via oxidative transformation is became much interesting in organic synthesis.
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Affiliation(s)
- Sumit Kumar
- Department of Chemistry
- School of Advanced Science
- Vellore Institute of Technology
- Vellore
- India
| | - Kishor Padala
- Department of Chemistry
- School of Advanced Science
- Vellore Institute of Technology
- Vellore
- India
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19
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Tian S, Lv S, Jia X, Ma L, Li B, Zhang G, Gao W, Wei Y, Chen J. CV‐driven Optimization: Cobalt‐Catalyzed Electrochemical Expedient Oxychlorination of Alkenes via ORR. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901260] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Siyu Tian
- Shandong Provincial Key Laboratory of Molecular EngineeringState Key Laboratory of Biobased Material and Green PapermakingSchool of Chemistry and Pharmaceutical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Shide Lv
- Shandong Provincial Key Laboratory of Molecular EngineeringState Key Laboratory of Biobased Material and Green PapermakingSchool of Chemistry and Pharmaceutical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Xiaofei Jia
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOECollege of Chemistry and Molecular Engineering. Qingdao University of Science and Technology Qingdao 266042 People's Republic of China
| | - Li Ma
- Shandong Provincial Key Laboratory of Molecular EngineeringState Key Laboratory of Biobased Material and Green PapermakingSchool of Chemistry and Pharmaceutical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Baoying Li
- Shandong Provincial Key Laboratory of Molecular EngineeringState Key Laboratory of Biobased Material and Green PapermakingSchool of Chemistry and Pharmaceutical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Guofeng Zhang
- Shandong Provincial Key Laboratory of Molecular EngineeringState Key Laboratory of Biobased Material and Green PapermakingSchool of Chemistry and Pharmaceutical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Wei Gao
- Shandong Provincial Key Laboratory of Molecular EngineeringState Key Laboratory of Biobased Material and Green PapermakingSchool of Chemistry and Pharmaceutical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Yingqin Wei
- Shandong Provincial Key Laboratory of Molecular EngineeringState Key Laboratory of Biobased Material and Green PapermakingSchool of Chemistry and Pharmaceutical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Jianbin Chen
- Shandong Provincial Key Laboratory of Molecular EngineeringState Key Laboratory of Biobased Material and Green PapermakingSchool of Chemistry and Pharmaceutical Engineering Qilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
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20
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Katrun P, Kuhakarn C. K2S2O8-Mediated halogenation of 2-arylimidazo[1,2-a]pyridines using sodium halides as the halogen sources. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.03.008] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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21
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Liang Y, Lin F, Adeli Y, Jin R, Jiao N. Efficient Electrocatalysis for the Preparation of (Hetero)aryl Chlorides and Vinyl Chloride with 1,2-Dichloroethane. Angew Chem Int Ed Engl 2019; 58:4566-4570. [PMID: 30664331 DOI: 10.1002/anie.201814570] [Citation(s) in RCA: 78] [Impact Index Per Article: 15.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2018] [Indexed: 01/26/2023]
Abstract
Although the application of 1,2-dichloroethane (DCE) as a chlorinating reagent in organic synthesis with the concomitant release of vinyl chloride as a useful byproduct is a fantastic idea, it still presents a tremendous challenge and has not yet been achieved because of the harsh dehydrochlorination conditions and the sluggish C-H chlorination process. Here we report a bifunctional electrocatalysis strategy for the catalytic dehydrochlorination of DCE at the cathode simultaneously with anodic oxidative aromatic chlorination using the released HCl as the chloride source for the efficient synthesis of value-added (hetero)aryl chlorides. The mildness and practicality of the protocol was further demonstrated by the efficient late-stage chlorination of bioactive molecules.
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Affiliation(s)
- Yujie Liang
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Fengguirong Lin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Yeerlan Adeli
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Rui Jin
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Xue Yuan Rd. 38, Beijing, 100191, China.,State Key Laboratory of Organometallic Chemistry, Chinese Academy of Sciences, Shanghai, 200032, China
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22
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Liang Y, Lin F, Adeli Y, Jin R, Jiao N. Efficient Electrocatalysis for the Preparation of (Hetero)aryl Chlorides and Vinyl Chloride with 1,2‐Dichloroethane. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201814570] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yujie Liang
- State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Fengguirong Lin
- State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Yeerlan Adeli
- State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Rui Jin
- State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Xue Yuan Rd. 38 Beijing 100191 China
| | - Ning Jiao
- State Key Laboratory of Natural and Biomimetic Drugs School of Pharmaceutical Sciences Peking University Xue Yuan Rd. 38 Beijing 100191 China
- State Key Laboratory of Organometallic Chemistry Chinese Academy of Sciences Shanghai 200032 China
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23
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Gao Y, Liu D, Fu Z, Huang W. Facile Synthesis of 2,2-Diacyl Spirocyclohexanones via an N-Heterocyclic Carbene-Catalyzed Formal [3C + 3C] Annulation. Org Lett 2019; 21:926-930. [PMID: 30714381 DOI: 10.1021/acs.orglett.8b03892] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A novel strategy for the construction of 2,2-diacyl spirocyclohexanones 3 has been demonstrated on the basis of an NHC-catalyzed [3C + 3C] annulation of potassium 2-oxo-3-enoates with 2-ethylidene 1,3-indandiones. Furthermore, enantioenriched 3 was obtained in good to excellent yields with good enantioselectivities when chiral N-heterocyclic carbene (NHC) was employed. Notably, ring opening of the resulting 2,2-diacyl spirocyclohexanones 3 with hydrazine led to the formation of phthalazinones in good to excellent yields.
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Affiliation(s)
- Yaru Gao
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Dehai Liu
- Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Zhenqian Fu
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
| | - Wei Huang
- Shaanxi Institute of Flexible Electronics (SIFE) , Northwestern Polytechnical University (NPU) , 127 West Youyi Road , Xi'an 710072 , China.,Key Laboratory of Flexible Electronics (KLOFE) & Institute of Advanced Materials (IAM), Jiangsu National Synergetic Innovation Center for Advanced Materials (SICAM) , Nanjing Tech University (NanjingTech) , 30 South Puzhu Road , Nanjing 211816 , China
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24
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Hu J, Zhou G, Tian Y, Zhao X. Selectfluor-promoted regioselective chlorination/bromination of 2-aminopyridines and 2-aminodiazines using LiCl/LiBr. Org Biomol Chem 2019; 17:6342-6345. [DOI: 10.1039/c9ob00972h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Using LiCl/LiBr, Selectfluor-promoted chlorination/bromination of 2-aminopyridines and 2-aminodiazines is established, producing the corresponding products with high regioselectivity.
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Affiliation(s)
- Jiao Hu
- School of Chemical Technology and Engineering
- Tongji University
- 200092 Shanghai
- P.R. China
| | - Gang Zhou
- School of Chemical Technology and Engineering
- Tongji University
- 200092 Shanghai
- P.R. China
| | - Yawei Tian
- School of Chemical Technology and Engineering
- Tongji University
- 200092 Shanghai
- P.R. China
| | - Xiaoming Zhao
- School of Chemical Technology and Engineering
- Tongji University
- 200092 Shanghai
- P.R. China
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25
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Tian S, Jia X, Wang L, Li B, Liu S, Ma L, Gao W, Wei Y, Chen J. The Mn-catalyzed paired electrochemical facile oxychlorination of styrenes via the oxygen reduction reaction. Chem Commun (Camb) 2019; 55:12104-12107. [DOI: 10.1039/c9cc06746a] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reported herein is the electrochemical engendering of chlorine radicals by a manganese catalyst with a controllable pattern, and inexpensive MgCl2 as the chlorine source.
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Affiliation(s)
- Siyu Tian
- Shandong Provincial Key Laboratory of Molecular Engineering
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan
- P. R. China
| | - Xiaofei Jia
- Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE
- College of Chemistry and Molecular Engineering
- Qingdao University of Science and Technology
- Qingdao 266042
- P. R. China
| | - Ling Wang
- Shandong Provincial Key Laboratory of Molecular Engineering
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan
- P. R. China
| | - Baoying Li
- Shandong Provincial Key Laboratory of Molecular Engineering
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan
- P. R. China
| | - Siyuan Liu
- Shandong Provincial Key Laboratory of Molecular Engineering
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan
- P. R. China
| | - Li Ma
- Shandong Provincial Key Laboratory of Molecular Engineering
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan
- P. R. China
| | - Wei Gao
- Shandong Provincial Key Laboratory of Molecular Engineering
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan
- P. R. China
| | - Yingqin Wei
- Shandong Provincial Key Laboratory of Molecular Engineering
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan
- P. R. China
| | - Jianbin Chen
- Shandong Provincial Key Laboratory of Molecular Engineering
- School of Chemistry and Pharmaceutical Engineering
- Qilu University of Technology (Shandong Academy of Sciences)
- Jinan
- P. R. China
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26
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Yu Y, Su Z, Cao H. Strategies for Synthesis of Imidazo[1,2-a
]pyridine Derivatives: Carbene Transformations or C−H Functionalizations. CHEM REC 2018; 19:2105-2118. [DOI: 10.1002/tcr.201800168] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/22/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Yue Yu
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan 528458 P.R. of China
| | - Zhengquan Su
- School of Public Health; Guangdong Pharmaceutical University; Guangzhou 510006 P.R. of China
| | - Hua Cao
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan 528458 P.R. of China
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27
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28
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Mandal S, Bera T, Dubey G, Saha J, Laha JK. Uses of K2S2O8 in Metal-Catalyzed and Metal-Free Oxidative Transformations. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00743] [Citation(s) in RCA: 147] [Impact Index Per Article: 24.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Sudip Mandal
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Tishyasoumya Bera
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Gurudutt Dubey
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
| | - Jaideep Saha
- Centre of Biomedical Research, Division of Molecular Synthesis and Drug Discovery, SGPGIMS Campus, Raebareli Road, Lucknow 226014, India
| | - Joydev K. Laha
- Department of Pharmaceutical Technology (Process Chemistry), National Institute of Pharmaceutical Education and Research, S. A. S. Nagar, Punjab 160062, India
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29
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Mei Y, Yao Z, Ji L, Toy PH, Tang CY. Effects of hypochlorite exposure on the structure and electrochemical performance of ion exchange membranes in reverse electrodialysis. J Memb Sci 2018. [DOI: 10.1016/j.memsci.2017.12.016] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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30
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Li J, Tang J, Wu Y, He Q, Yu Y. Transition-metal-free regioselective C–H halogenation of imidazo[1,2-a]pyridines: sodium chlorite/bromite as the halogen source. RSC Adv 2018; 8:5058-5062. [PMID: 35539548 PMCID: PMC9078039 DOI: 10.1039/c7ra12100h] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/03/2017] [Accepted: 01/23/2018] [Indexed: 12/11/2022] Open
Abstract
A facile transition-metal-free regioselective halogenation of imidazo[1,2-a]pyridines using sodium chlorite/bromite as the halogen source is presented. The reaction has provided an efficient method for the formation of C–Cl or C–Br bonds to synthesize 3-chloro or 3-bromo-imidazo[1,2-a]pyridines which were then efficiently transformed into imidazo[1,2-a]pyridine core π-systems by Suzuki–Miyaura reactions. We report highly efficient strategies for the synthesis of 3-Cl or 3-Br-imidazo[1,2-a]pyridines using sodium chlorite/bromite as the halogenic source.![]()
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Affiliation(s)
- Junxuan Li
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Zhongshan 528458
- P. R. China
| | - Jiayi Tang
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Zhongshan 528458
- P. R. China
| | - Yuanheng Wu
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Zhongshan 528458
- P. R. China
| | - Qiuxing He
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Zhongshan 528458
- P. R. China
| | - Yue Yu
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Zhongshan 528458
- P. R. China
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31
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Tang SZ, Zhao W, Chen T, Liu Y, Zhang XM, Zhang FM. A Simple and Efficient Method for the Preparation of α-Halogenated Ketones Using Iron(III) Chloride and Iron(III) Bromide as Halogen Sources with Phenyliodonium Diacetate as Oxidant. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700833] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Shi-Zhong Tang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Wenshuang Zhao
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Tao Chen
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Yang Liu
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Xiao-Ming Zhang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
| | - Fu-Min Zhang
- State Key Laboratory of Applied Organic Chemistry and Department of Chemistry; Lanzhou University; Lanzhou 730000 People's Republic of China
- Key Laboratory of Drug-Targeting of Education Ministry and Department of Medicinal Chemistry, West China School of Pharmacy; Sichuan University; Chengdu 610041 People's Republic of China
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32
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Zhang L, Hu X. Room temperature C(sp 2)-H oxidative chlorination via photoredox catalysis. Chem Sci 2017; 8:7009-7013. [PMID: 29147528 PMCID: PMC5642143 DOI: 10.1039/c7sc03010j] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2017] [Accepted: 08/15/2017] [Indexed: 12/01/2022] Open
Abstract
Photoredox catalysis has been developed to achieve room temperature oxidative C–H chlorination of aromatic compounds using NaCl as the chlorine source and Na2S2O8 as the oxidant.
Photoredox catalysis has been developed to achieve oxidative C–H chlorination of aromatic compounds using NaCl as the chlorine source and Na2S2O8 as the oxidant. The reactions occur at room temperature and exhibit exclusive selectivity for C(sp2)–H bonds over C(sp3)–H bonds. The method has been used for the chlorination of a diverse set of substrates, including the expedited synthesis of key intermediates to bioactive compounds and a drug.
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Affiliation(s)
- Lei Zhang
- Laboratory of Inorganic Synthesis and Catalysis , Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , ISCI-LSCI , BCH 3305 , 1015 Lausanne , Switzerland . ; http://lsci.epfl.ch
| | - Xile Hu
- Laboratory of Inorganic Synthesis and Catalysis , Institute of Chemical Sciences and Engineering , Ecole Polytechnique Fédérale de Lausanne (EPFL) , ISCI-LSCI , BCH 3305 , 1015 Lausanne , Switzerland . ; http://lsci.epfl.ch
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33
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Combe SH, Hosseini A, Parra A, Schreiner PR. Mild Aliphatic and Benzylic Hydrocarbon C-H Bond Chlorination Using Trichloroisocyanuric Acid. J Org Chem 2017; 82:2407-2413. [PMID: 28106993 DOI: 10.1021/acs.joc.6b02829] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We present the controlled monochlorination of aliphatic and benzylic hydrocarbons with only 1 equiv of substrate at 25-30 °C using N-hydroxyphthalimide (NHPI) as radical initiator and commercially available trichloroisocyanuric acid (TCCA) as the chlorine source. Catalytic amounts of CBr4 reduced the reaction times considerably due to the formation of chain-carrying ·CBr3 radicals. Benzylic C-H chlorination affords moderate to good yields for arenes carrying electron-withdrawing (50-85%) or weakly electron-donating groups (31-73%); cyclic aliphatic substrates provide low yields (24-38%). The products could be synthesized on a gram scale followed by simple purification via distillation. We report the first direct side-chain chlorination of 3-methylbenzoate affording methyl 3-(chloromethyl)benzoate, which is an important building block for the synthesis of vasodilator taprostene.
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Affiliation(s)
- Sascha H Combe
- Institute of Organic Chemistry, Justus-Liebig University , Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Abolfazl Hosseini
- Institute of Organic Chemistry, Justus-Liebig University , Heinrich-Buff-Ring 17, 35392 Giessen, Germany
| | - Alejandro Parra
- Departamento de Química Orgánica, Universidad Autónoma de Madrid Cantoblanco , 28049 Madrid, Spain
| | - Peter R Schreiner
- Institute of Organic Chemistry, Justus-Liebig University , Heinrich-Buff-Ring 17, 35392 Giessen, Germany
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34
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Yamaguchi M, Manabe K. Three-step synthesis of 2,5,7-trisubstituted indoles from N-acetyl-2,4,6-trichloroaniline using Pd-catalyzed site-selective cross-coupling. Org Biomol Chem 2017; 15:6645-6655. [DOI: 10.1039/c7ob01547j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A facile three-step synthesis of 2,5,7-trisubstituted indoles was realized by using Cy-DHTP as an effective ligand for site-selective cross couplings.
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Affiliation(s)
- Miyuki Yamaguchi
- School of Pharmaceutical Sciences
- University of Shizuoka
- Shizuoka 422-8526
- Japan
| | - Kei Manabe
- School of Pharmaceutical Sciences
- University of Shizuoka
- Shizuoka 422-8526
- Japan
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35
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Wu J, Zhou J, Shi Y, Zhu J. PhPOCl2 as a potent catalyst for chlorination reaction of phenols with PCl5. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1218897] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Affiliation(s)
- Jiang Wu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, China
| | - Junpeng Zhou
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, China
| | - Yalei Shi
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, China
| | - Jintao Zhu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, China
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36
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Hering T, Meyer AU, König B. Photocatalytic Anion Oxidation and Applications in Organic Synthesis. J Org Chem 2016; 81:6927-36. [DOI: 10.1021/acs.joc.6b01050] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Thea Hering
- Institute of Organic Chemistry,
Faculty of Chemistry and Pharmacy, University of Regensburg, D-93040 Regensburg, Germany
| | - Andreas Uwe Meyer
- Institute of Organic Chemistry,
Faculty of Chemistry and Pharmacy, University of Regensburg, D-93040 Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry,
Faculty of Chemistry and Pharmacy, University of Regensburg, D-93040 Regensburg, Germany
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37
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Yamaguchi M, Akiyama T, Sasou H, Katsumata H, Manabe K. One-Pot Synthesis of Substituted Benzo[b]furans and Indoles from Dichlorophenols/Dichloroanilines Using a Palladium-Dihydroxyterphenylphosphine Catalyst. J Org Chem 2016; 81:5450-63. [PMID: 27267124 DOI: 10.1021/acs.joc.6b00824] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Disubstituted benzo[b]furans were synthesized by ortho-selective Sonogashira coupling of dichlorophenols and terminal alkynes, followed by cyclization and Suzuki-Miyaura coupling in one pot, using a palladium-dihydroxyterphenylphosphine (Cy-DHTP) catalyst. The use of substoichiometric amounts of tetrabutylammonium chloride was effective in accelerating the Suzuki-Miyaura coupling. This protocol was also successfully applied to the one-pot synthesis of disubstituted indoles from dichloroaniline derivatives.
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Affiliation(s)
- Miyuki Yamaguchi
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Tomoyo Akiyama
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Hirohisa Sasou
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Haruka Katsumata
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
| | - Kei Manabe
- School of Pharmaceutical Sciences, University of Shizuoka , 52-1 Yada, Suruga-ku, Shizuoka 422-8526, Japan
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38
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Hering T, Mühldorf B, Wolf R, König B. Halogenase-inspirierte oxidative Chlorierung mittels Flavin- Photokatalyse. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600783] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Thea Hering
- Universität Regensburg; Fakultät für Chemie und Pharmazie; 93040 Regensburg Deutschland
| | - Bernd Mühldorf
- Universität Regensburg; Fakultät für Chemie und Pharmazie; 93040 Regensburg Deutschland
| | - Robert Wolf
- Universität Regensburg; Fakultät für Chemie und Pharmazie; 93040 Regensburg Deutschland
| | - Burkhard König
- Universität Regensburg; Fakultät für Chemie und Pharmazie; 93040 Regensburg Deutschland
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39
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Hering T, Mühldorf B, Wolf R, König B. Halogenase-Inspired Oxidative Chlorination Using Flavin Photocatalysis. Angew Chem Int Ed Engl 2016; 55:5342-5. [PMID: 26991557 PMCID: PMC5069574 DOI: 10.1002/anie.201600783] [Citation(s) in RCA: 100] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/23/2016] [Revised: 01/23/2016] [Indexed: 11/22/2022]
Abstract
Chlorine gas or electropositive chlorine reagents are used to prepare chlorinated aromatic compounds, which are found in pharmaceuticals, agrochemicals, and polymers, and serve as synthetic precursors for metal‐catalyzed cross‐couplings. Nature chlorinates with chloride anions, FAD‐dependent halogenases, and O2 as the oxidant. A photocatalytic oxidative chlorination is described based on the organic dye riboflavin tetraacetate mimicking the enzymatic process. The chemical process allows within the suitable arene redox potential window a broader substrate scope compared to the specific activation in the enzymatic binding pocket.
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Affiliation(s)
- Thea Hering
- Universität Regensburg, Fakultät für Chemie und Pharmazie, 93040, Regensburg, Germany
| | - Bernd Mühldorf
- Universität Regensburg, Fakultät für Chemie und Pharmazie, 93040, Regensburg, Germany
| | - Robert Wolf
- Universität Regensburg, Fakultät für Chemie und Pharmazie, 93040, Regensburg, Germany.
| | - Burkhard König
- Universität Regensburg, Fakultät für Chemie und Pharmazie, 93040, Regensburg, Germany.
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40
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Zhou Y, Wang J, Gu Z, Wang S, Zhu W, Aceña JL, Soloshonok VA, Izawa K, Liu H. Next Generation of Fluorine-Containing Pharmaceuticals, Compounds Currently in Phase II-III Clinical Trials of Major Pharmaceutical Companies: New Structural Trends and Therapeutic Areas. Chem Rev 2016; 116:422-518. [PMID: 26756377 DOI: 10.1021/acs.chemrev.5b00392] [Citation(s) in RCA: 1787] [Impact Index Per Article: 223.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Yu Zhou
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Jiang Wang
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Zhanni Gu
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Shuni Wang
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - Wei Zhu
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
| | - José Luis Aceña
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU , Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain.,Department of Organic Chemistry, Autónoma University of Madrid , Cantoblanco, 28049 Madrid, Spain
| | - Vadim A Soloshonok
- Department of Organic Chemistry I, Faculty of Chemistry, University of the Basque Country UPV/EHU , Paseo Manuel Lardizábal 3, 20018 San Sebastián, Spain.,IKERBASQUE, Basque Foundation for Science, María Díaz de Haro 3, 48013 Bilbao, Spain
| | - Kunisuke Izawa
- Hamari Chemicals Ltd., 1-4-29 Kunijima, Higashi-Yodogawa-ku, Osaka, Japan 533-0024
| | - Hong Liu
- Key Laboratory of Receptor Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences , 555 Zu Chong Zhi Road, Shanghai 201203, China
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41
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Zhang X, Liu L, Li C. High-yielding aqueous synthesis of chloroacetophenones and aroyl chlorohydrins. RSC Adv 2016. [DOI: 10.1039/c6ra00433d] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Two new reactions for preparing chloroacetophenones and aroyl chlorohydrins promoted by sulfonyl chloride and mediated by water are reported.
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Affiliation(s)
- Xixi Zhang
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- China
| | - Lei Liu
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- China
| | - Chunbao Li
- Department of Chemistry
- School of Science
- Tianjin University
- Tianjin 300072
- China
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42
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Badetti E, Romano F, Marchiò L, Taşkesenlioğlu S, Daştan A, Zonta C, Licini G. Effective bromo and chloro peroxidation catalysed by tungsten(vi) amino triphenolate complexes. Dalton Trans 2016; 45:14603-8. [DOI: 10.1039/c6dt01780k] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Amino triphenolate tungsten(vi) complexes have been prepared and they proved to be efficient catalysts in haloperoxidation reactions using hydrogen peroxide as a terminal oxidant and inorganic sources of halides.
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Affiliation(s)
- Elena Badetti
- Dipartimento di Scienze Chimiche
- Università di Padova and CIRCC
- Padova Unit
- 35131 Padova
- Italy
| | - Francesco Romano
- Dipartimento di Scienze Chimiche
- Università di Padova and CIRCC
- Padova Unit
- 35131 Padova
- Italy
| | - Luciano Marchiò
- Dipartimento di Chimica
- Università degli Studi di Parma
- 43123 Parma
- Italy
| | - Sara Taşkesenlioğlu
- Ağrı İbrahim Çeçen University
- Faculty of Arts and Science
- Department of Chemistry
- Agri
- Turkey
| | - Arif Daştan
- Faculty of Science
- Department of Chemistry
- Ataturk University
- Erzurum
- Turkey
| | - Cristiano Zonta
- Dipartimento di Scienze Chimiche
- Università di Padova and CIRCC
- Padova Unit
- 35131 Padova
- Italy
| | - Giulia Licini
- Dipartimento di Scienze Chimiche
- Università di Padova and CIRCC
- Padova Unit
- 35131 Padova
- Italy
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43
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Xu J, Zhu X, Zhou G, Ying B, Ye P, Su L, Shen C, Zhang P. Copper(ii)-catalyzed C5 and C7 halogenation of quinolines using sodium halides under mild conditions. Org Biomol Chem 2016; 14:3016-21. [DOI: 10.1039/c6ob00169f] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A simple and mild protocol for copper catalyzed halogenation of quinoline at C5 and C7 positions was developed, affording the desired remote C–H activation products in moderate to good yields.
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Affiliation(s)
- Jun Xu
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
| | - Xiaolei Zhu
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
| | - Guobin Zhou
- Zhejiang Yongtai Technology Co
- Ltd
- Linhai 317016
- China
| | - Beibei Ying
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
| | - Pingping Ye
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
| | - Lingying Su
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
| | - Chao Shen
- College of Biology and Environmental Engineering
- Zhejiang Shuren University
- Hangzhou 310015
- China
| | - Pengfei Zhang
- College of Material
- Chemistry and Chemical Engineering
- Hangzhou Normal University
- Hangzhou 310036
- China
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44
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Efficient Synthesis of α-Chloroketones Catalyzed by Fluorous Hydrazine-1,2-Bis(Carbothioate) Organocatalyst. Catal Letters 2015. [DOI: 10.1007/s10562-015-1676-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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45
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Mishra AK, Nagarajaiah H, Moorthy JN. Trihaloisocyanuric Acids as Atom-Economic Reagents for Halogenation of Aromatics and Carbonyl Compounds in the Solid State by Ball Milling. European J Org Chem 2015. [DOI: 10.1002/ejoc.201403463] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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46
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Novikov RA, Tomilov YV, Nefedov OM. Reactions of diazo ketones with activated unsaturated compounds in the presence of gallium trichloride. Russ Chem Bull 2014. [DOI: 10.1007/s11172-014-0444-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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