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Sonawane AD, Sonawane RA, Ninomiya M, Koketsu M. Synthesis of Seleno‐Heterocycles
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Electrophilic/Radical Cyclization of Alkyne Containing Heteroatoms. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000490] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Amol D. Sonawane
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Rohini A. Sonawane
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Masayuki Ninomiya
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University 1-1 Yanagido Gifu 501-1193 Japan
| | - Mamoru Koketsu
- Department of Chemistry and Biomolecular ScienceFaculty of EngineeringGifu University 1-1 Yanagido Gifu 501-1193 Japan
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Matsumoto S, Kikuchi S, Norita N, Masu H, Akazome M. Formation of Benzimidazoisoquinolinium and Benzimidazoisoindolinum Cyclic Systems by the Reaction of 2-(2-Alkynylphenyl)benzimidazoles with Iodine and Iodine-Iodine Interaction Including Halogen Bonding in Their Crystal Structures. J Org Chem 2016; 81:5322-9. [PMID: 27258839 DOI: 10.1021/acs.joc.6b00607] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The reaction of 2-(2-alkynylphenyl)benz[d]imidazoles with molecular iodine constructed 5- and 6-membered rings as novel organic salts in high yield. The constituted number of ring systems was influenced by the substituent at the triple bond: 6-membered rings were formed from compounds bearing aryl substituents, whereas 5-membered ones were obtained from compounds with hydrogen or alkyl substituents. The products were obtained with triiodide as a counteranion; however, compounds with iodide were also obtainable under certain conditions. We also revealed that they had an iodine-iodine interaction included in halogen bonding between an iodo moiety of the cation and a triiodide or iodide of the counteranion. The iodine-iodine interaction was formed with greater preference than the electrostatic interaction between the cationic atom and triiodide or iodide.
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Affiliation(s)
- Shoji Matsumoto
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoicho, Inageku, Chiba, 263-8522, Japan
| | - Shu Kikuchi
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoicho, Inageku, Chiba, 263-8522, Japan
| | - Naoto Norita
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoicho, Inageku, Chiba, 263-8522, Japan
| | - Hyuma Masu
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoicho, Inageku, Chiba, 263-8522, Japan.,Center for Analytical Instrumentation, Chiba University , 1-33 Yayoicho, Inageku, Chiba, 263-8522, Japan
| | - Motohiro Akazome
- Department of Applied Chemistry and Biotechnology, Graduate School of Engineering, Chiba University , 1-33 Yayoicho, Inageku, Chiba, 263-8522, Japan
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Patil PH, Fernandes RA. Unimolecular tetrakis-piperidine-4-ol: an efficient ligand for copper and amine free Sonogashira coupling. RSC Adv 2015. [DOI: 10.1039/c5ra07754k] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023] Open
Abstract
Unimolecular tetrakis-4-hydroxypiperidine catalysed Cu and amine free Sonogashira coupling of various aryliodides/bromides and alkyl or aryl terminal alkynes giving access to internal arylalkynes is reported.
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Affiliation(s)
- Pradnya H. Patil
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
| | - Rodney A. Fernandes
- Department of Chemistry
- Indian Institute of Technology Bombay
- Mumbai 400076
- India
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Affiliation(s)
- Rafael Chinchilla
- Departamento de Química Orgánica,
Facultad
de Ciencias, and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apartado 99, 03080 Alicante,
Spain
| | - Carmen Nájera
- Departamento de Química Orgánica,
Facultad
de Ciencias, and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apartado 99, 03080 Alicante,
Spain
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Gai BM, Stein AL, Roehrs JA, Bilheri FN, Nogueira CW, Zeni G. Synthesis and antidepressant-like activity of selenophenes obtained via iron(III)-PhSeSePh-mediated cyclization of Z-selenoenynes. Org Biomol Chem 2011; 10:798-807. [PMID: 22120691 DOI: 10.1039/c1ob06548c] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
We present here the synthesis and antidepressant-like action of a series of 2,5-disubstituted-3-(organoseleno)-selenophenes prepared by a novel synthetic route, the FeCl(3)-diorganyl dichalcogenide-mediated intramolecular cyclization of (Z)-chalcogenoenynes. The cyclized products were obtained in good yields. The results showed that 2c, 2d, 2e and 2o, evaluated in the mouse forced-swimming test, elicited an antidepressant-like activity. The studies clearly show that the phenyl group at the 2-position and an organoselenium group at the 3-position of the selenophene ring are essential for the antidepressant-like activity of selenophenes. A close inspection of the results also revealed that the fluorophenyl portion in the organoselenium group is fundamental for the antidepressant-like action of this class of organochalcogens.
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Affiliation(s)
- Bibiana M Gai
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria-Rio Grande do Sul, Brasil
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Barancelli DA, Schumacher RF, Leite MR, Zeni G. Copper(II)-Mediated Intramolecular Cyclization of (Z)-Chalcogenoenynes: Synthesis of 3-Halochalcogenophene Derivatives. European J Org Chem 2011. [DOI: 10.1002/ejoc.201100992] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
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Schumacher RF, Rosário AR, Souza ACG, Acker CI, Nogueira CW, Zeni G. The potential antioxidant activity of 2,3-dihydroselenophene, a prototype drug of 4-aryl-2,3-dihydroselenophenes. Bioorg Med Chem 2011; 19:1418-25. [PMID: 21288725 DOI: 10.1016/j.bmc.2011.01.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2010] [Revised: 01/04/2011] [Accepted: 01/05/2011] [Indexed: 10/18/2022]
Abstract
Here we present our results in palladium cross-coupling reaction of aryl boronic acids with 4-iodo-2,3-dihydroselenophene derivatives. The cross-coupled products were obtained in satisfactory yields. A dehydrogenation of 4,5-diphenyl-2,3-dihydroselenophene was activated by DDQ and the 2,3-diarylselenophene was obtained in good yield. Regarding the antioxidant activity, the selenophene derivative 3a was effective in counteracting lipid and protein oxidation as well as scavenging ABTS radical. The findings of the present study indicate that 3a is a prototype for future drug development programs to treat disorders mediated by reactive oxygen species.
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Affiliation(s)
- Ricardo F Schumacher
- Laboratório de Síntese, Reatividade, Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNE, UFSM, Santa Maria, Rio Grande do Sul, CEP 97105-900, Brazil
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Affiliation(s)
- Rafael Chinchilla
- Departamento de Química Orgánica, Facultad de Ciencias and Instituto de Síntesis Orgánica (ISO), Universidad de Alicante, Apartado 99, 03080 Alicante, Spain.
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