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Parmar U, Somvanshi D, Kori S, Desai AA, Dandela R, Maity DK, Kapdi AR. Room-Temperature Amination of Chloroheteroarenes in Water by a Recyclable Copper(II)-Phosphaadamantanium Sulfonate System. J Org Chem 2021; 86:8900-8925. [PMID: 34156851 DOI: 10.1021/acs.joc.1c00845] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Buchwald-Hartwig amination of chloroheteroarenes has been a challenging synthetic process, with very few protocols promoting this important transformation at ambient temperature. The current report discusses about an efficient copper-based catalytic system (Cu/PTABS) for the amination of chloroheteroarenes at ambient temperature in water as the sole reaction solvent, a combination that is first to be reported. A wide variety of chloroheteroarenes could be coupled efficiently with primary and secondary amines as well as selected amino acid esters under mild reaction conditions. Catalytic efficiency of the developed protocol also promotes late-stage functionalization of active pharmaceutical ingredients (APIs) such as antibiotics (floxacins) and anticancer drugs. The catalytic system also performs efficiently at a very low concentration of 0.0001 mol % (TON = 980,000) and can be recycled 12 times without any appreciable loss in activity. Theoretical calculations reveal that the π-acceptor ability of the ligand PTABS is the main reason for the appreciably high reactivity of the catalytic system. Preliminary characterization of the catalytic species in the reaction was carried out using UV-VIS and ESR spectroscopy, providing evidence for the Cu(II) oxidation state.
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Affiliation(s)
- Udaysinh Parmar
- Aether Industries Limited, B-21/7, Hojiwala Industrial Estate, Sachin, Surat 394230, Gujarat, India
| | - Dipesh Somvanshi
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh road, Matunga, Mumbai 400019, India
| | - Santosh Kori
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh road, Matunga, Mumbai 400019, India
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology-Indian Oil Odisha Campus, IIT Khragpur extension Centre, Mouza Samantpuri, Bhubaneswar 751013, Odisha, India
| | - Aman A Desai
- Aether Industries Limited, B-21/7, Hojiwala Industrial Estate, Sachin, Surat 394230, Gujarat, India
| | - Rambabu Dandela
- Department of Industrial and Engineering Chemistry, Institute of Chemical Technology-Indian Oil Odisha Campus, IIT Khragpur extension Centre, Mouza Samantpuri, Bhubaneswar 751013, Odisha, India
| | - Dilip K Maity
- Chemical Sciences, Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
- Chemical Sciences, Bhabha Atomic Research Centre, Trombay, Mumbai 400085, India
| | - Anant R Kapdi
- Department of Chemistry, Institute of Chemical Technology, Nathalal Parekh road, Matunga, Mumbai 400019, India
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Zaprutko L, Żwawiak J, Olender D, Gzella A. Regioselective Nitro Group Substitution. Synthesis of Isomeric 4-Amino-5-nitro- and 5-Amino-4-nitroimidazoles. HETEROCYCLES 2012. [DOI: 10.3987/com-12-12502] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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Huber SM, Heinemann FW, Audebert P, Weiss R. 4,5-Bis(dialkylamino)-Substituted Imidazolium Systems: Facile Access to N-Heterocyclic Carbenes with Self-Umpolung Option. Chemistry 2011; 17:13078-86. [DOI: 10.1002/chem.201101999] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Chauvière G, Viodé C, Périé J. Nucleophilic substitution studies on nitroimidazoles, and applications to the synthesis of biologically active compounds. J Heterocycl Chem 2009. [DOI: 10.1002/jhet.5570370120] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Nitroimidazoles. V. Synthesis and anti-HIV evaluation of new 5-substituted piperazinyl-4-nitroimidazole derivatives. ACTA PHARMACEUTICA 2007; 57:379-93. [PMID: 18165184 DOI: 10.2478/v10007-007-0031-7] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
Abstract
A series of 2-alkylthio-1-[4-(1-benzyl-2-ethyl-4-nitro-1H- -imidazol-5-yl)-piperazin-1-yl]ethanones (3-9) and alkyl-[4-(1-benzyl-2-ethyl-4-nitro-1H-imidazol-5-yl)-piperazin-1-yl)ketones (11-20) as well as the indole analogue 22 were synthesized from 4-nitro-5-piperazinyl imidazole derivative 1, with the aim to develop newly non-nucleoside reverse transcriptase inhibitors (NNRTIs). The newly synthesized compounds were assayed against HIV-1 and HIV-2 in MT-4 cells. Compound 4 showed inhibition of HIV-1 (EC50 0.45 microg mL-1) and HIV-2 (0.50 microg mL-1), while 11 showed inhibition of HIV-1 (EC50 2.48 microg mL-1, SI = 4).
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Al-Soud YA, Al-Masoudi NA, De Clercq E, Paneccoque C. Nitroimidazoles, part 4: Synthesis and anti-HIV activity of new 5-alkylsulfanyl and 5-(4′-arylsulfonyl)piperazinyl-4-nitroimidazole derivatives. HETEROATOM CHEMISTRY 2007. [DOI: 10.1002/hc.20301] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Al‐Soud YA, Al‐Masoudi NA. Nitroimidazoles, Part 1. An Unexpected Reactivity During the Cyclization of 3‐(4‐Amino‐1‐benzyl‐2‐ethyl‐1H‐imidazol‐5‐ylsulphanyl)‐propionic Acid Methyl Ester. SYNTHETIC COMMUN 2006. [DOI: 10.1080/00397910500184735] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Yaseen A. Al‐Soud
- a Department of Chemistry, College of Science , University of Al al‐Bayt , Al‐Mafraq, Jordan
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Al-Masoudi NA, Al-Soud YA, Kalogerakis A, Pannecouque C, De Clercq E. Nitroimidazoles, Part 2. Chem Biodivers 2006; 3:515-26. [PMID: 17193287 DOI: 10.1002/cbdv.200690055] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Abstract
A series of 5-alkylamino and 5-alkylsulfanyl derivatives of 1-aryl-2-alkyl-4-nitro-1H-imidazoles 12-21, 31, and 34 were synthesized by a simple method with the aim to develop novel HIV non-nucleoside reverse transcriptase inhibitors (NNRTIs). All the new compounds were tested against HIV-1 and HIV-2 in MT-4 cells. Compound 21, with an arylsulfanyl group at C(5) of the 4-nitro-1H-imidazole backbone showed an EC(50) value of 0.22 microg/ml against HIV-1 with a therapeutic index of 13. This means that compound 21 was cytotoxic to MT-4 cells at a CC(50) value of 2.57 microg/ml; also compounds 8, 22-25, 28, and 29 were cytotoxic to MT-4 cells within the 0.4-4 microg/ml concentration range. Compounds 8, and 12-21 were evaluated, as a rule, but found inactive at non-toxic concentrations against hepatitis C virus, herpes simplex type 1 and 2, cytomegalovirus (CMV), varicella-zoster virus (VZV), vaccinia virus, and vesicular stomatitis virus, and a number of other viruses. Yet, the therapeutic index of compounds 17 and 21 for CMV and VZV approached the tenfold cut-off point. Compounds 8 and 21 exhibited some cytostatic activity against leukemia and melanoma cell lines.
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Affiliation(s)
- Najim A Al-Masoudi
- Fachbereich Chemie, Universität Konstanz, Postfach 5560, D-78457 Konstanz.
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Synthesis, characterization, crystallographic analysis, antifungal and genotoxic properties of some 1-methyl-1H-imidazoles. Eur J Med Chem 1995. [DOI: 10.1016/0223-5234(96)88292-4] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Grimmett MR. Halogenation of Heterocycles: I. Five-Membered Rings. ADVANCES IN HETEROCYCLIC CHEMISTRY VOLUME 57 1993. [DOI: 10.1016/s0065-2725(08)60890-9] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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