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Sun ZZ, Gao P, Yang Y, Wang T, Wu XJ, Wang YQ. Synthesis of Carboranylated Dihydropyrrolo[1,2- a]quinoxalines and Dihydroindolo[1,2- a]quinoxalines by BF 3·OEt 2-Catalyzed Heterocyclization of C-Formyl- o-carboranes and Investigation of Their Oxidation Stability. J Org Chem 2024; 89:3573-3579. [PMID: 38377489 DOI: 10.1021/acs.joc.3c02443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
A BF3·OEt2-catalyzed synthesis of carboranylated dihydropyrrolo[1,2-a]quinoxalines and dihydroindolo[1,2-a]quinoxalines in 30-99% yields is presented through the heterocyclization of various C-modified C-formyl-o-carboranes with 1-(2-aminophenyl)-pyrroles/indoles. A systematic comparative investigation of their oxidation stability in air confirmed that 4-carboranyl-4,5-dihydropyrrolo[1,2-a]quinoxaline had better stability than the 4-phenyl analogue. A cage-deboronation reaction for N-acetyl-substituted carboranylated dihydropyrrolo[1,2-a]quinoxaline produced the corresponding 7,8-nido-carborane cesium salt. A kinetic resolution was also realized to obtain an optically pure carboranylated N-heterocycle scaffold bearing a carborane cage carbon-bonded chiral stereocenter.
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Affiliation(s)
- Zhen-Zhen Sun
- Provincial Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Pan Gao
- Provincial Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Yong Yang
- Zhengzhou Yuanli Biological Technology Co., Ltd., Zhengzhou, Henan 450000, P. R. China
| | - Tao Wang
- Provincial Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Xiao-Jun Wu
- Zhengzhou Yuanli Biological Technology Co., Ltd., Zhengzhou, Henan 450000, P. R. China
| | - You-Qing Wang
- Provincial Key Laboratory of Natural Medicine and Immuno-Engineering, Henan University, Kaifeng, Henan 475004, P. R. China
- Zhengzhou Yuanli Biological Technology Co., Ltd., Zhengzhou, Henan 450000, P. R. China
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Sivaev IB. Decaborane: From Alfred Stock and Rocket Fuel Projects to Nowadays. Molecules 2023; 28:6287. [PMID: 37687117 PMCID: PMC10488552 DOI: 10.3390/molecules28176287] [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: 08/02/2023] [Revised: 08/21/2023] [Accepted: 08/24/2023] [Indexed: 09/10/2023] Open
Abstract
The review covers more than a century of decaborane chemistry from the first synthesis by Alfred Stock to the present day. The main attention is paid to the reactions of the substitution of hydrogen atoms by various atoms and groups with the formation of exo-polyhedral boron-halogen, boron-oxygen, boron-sulfur, boron-nitrogen, boron-phosphorus, and boron-carbon bonds. Particular attention is paid to the chemistry of conjucto-borane anti-[B18H22], whose structure is formed by two decaborane moieties with a common edge, the chemistry of which has been intensively developed in the last decade.
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Affiliation(s)
- Igor B Sivaev
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilov Str., 119334 Moscow, Russia
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3
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Lu JY, Zhao B, Du Y, Yang J, Lu J. Transition-metal-free direct nucleophilic substitution of carboranyllithium and 2-halopyridines. Org Biomol Chem 2019; 17:7438-7441. [PMID: 31169281 DOI: 10.1039/c9ob00978g] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical and efficient C(cage)-heteroarylation of carborane is presented, via direct nucleophilic substitution of carboranyllithium with 2-halopyridines. This reaction does not need the aid of any transition metal and utilizes readily available carboranyllithium nucleophiles, thereby avoiding transmetalation of carboranyllithium. The process exhibits a broad scope, and a vast array of 2-halopyridines have proven to be suitable substrates. The method serves as a complement to C(cage)-arylation reactions and may find wide applications in materials science and medicinal and coordination chemistry.
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Affiliation(s)
- Ju-You Lu
- Laboratory of Green Catalysis and Reaction Engineering of Haikou, Hainan Provincial Fine Chemical Engineering Research Center, School of Sciences, Hainan University, Haikou 570228, China. and State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute, Xi'an, Shaanxi 710065, China.
| | - Bo Zhao
- State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute, Xi'an, Shaanxi 710065, China.
| | - Yongmei Du
- State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute, Xi'an, Shaanxi 710065, China.
| | - Jianxin Yang
- Laboratory of Green Catalysis and Reaction Engineering of Haikou, Hainan Provincial Fine Chemical Engineering Research Center, School of Sciences, Hainan University, Haikou 570228, China.
| | - Jian Lu
- State Key Laboratory of Fluorine & Nitrogen Chemicals, Xi'an Modern Chemistry Research Institute, Xi'an, Shaanxi 710065, China.
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Bould J, Passarelli V, Oro LA, Macías R. Reversible Small-Molecule Interactions with Coordinatively Unsaturated Metal Centers Held in Metallathiaborane Clusters. Eur J Inorg Chem 2017. [DOI: 10.1002/ejic.201700539] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jonathan Bould
- Departamento de Química Inorgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; C/Pedro Cerbuna 12 ES-50009 Zaragoza Spain
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; C/Pedro Cerbuna 12 ES-50009 Zaragoza Spain
- Centro Universitario de la Defensa; Ctra. Huesca s/n ES-50090 Zaragoza Spain
| | - Luis A. Oro
- Departamento de Química Inorgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; C/Pedro Cerbuna 12 ES-50009 Zaragoza Spain
| | - Ramón Macías
- Departamento de Química Inorgánica; Instituto de Síntesis Química y Catálisis Homogénea (ISQCH); Universidad de Zaragoza-CSIC; C/Pedro Cerbuna 12 ES-50009 Zaragoza Spain
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Couto M, Mastandrea I, Cabrera M, Cabral P, Teixidor F, Cerecetto H, Viñas C. Small-Molecule Kinase-Inhibitors-Loaded Boron Cluster as Hybrid Agents for Glioma-Cell-Targeting Therapy. Chemistry 2017; 23:9233-9238. [PMID: 28605114 DOI: 10.1002/chem.201701965] [Citation(s) in RCA: 44] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2017] [Indexed: 12/30/2022]
Abstract
The reported new anilinoquinazoline-icosahedral borane hybrids have been evaluated as glioma targeting for potential use in cancer therapy. Their anti-glioma activity depends on hybrids' lipophilicity; the most powerful compound against glioma cells, a 1,7-closo-derivative, displayed at least 3.3 times higher activity than the parent drug erlotinib. According to the cytotoxic effects on normal glia cells, the hybrids were selective for epidermal growth factor receptor (EGFR)-overexpressed tumor cells. These boron carriers could be used to enrich glioma cancer cells with boron for cancer therapy.
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Affiliation(s)
- Marcos Couto
- Grupo de Química Medicinal, Laboratorio de Química Orgánica, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay.,Institut de Ciències dels Materials de Barcelona, ICMAB-CSIC Campus UAB, 08193, Bellaterra, Spain.,Área de Radiofarmacia, Centro de Investigaciones Nucleares Facultad de Ciencias, Universidad de la República, Mataojo 2055, 11400, Montevideo, Uruguay
| | - Ignacio Mastandrea
- Centro Universitario Paysandú. CenUR Litoral Norte, Universidad de la República., 60000, Paysandú, Uruguay.,Instituto de Investigaciones Biológicas Clemente Estable, 11600, Montevideo, Uruguay
| | - Mauricio Cabrera
- Centro Universitario Paysandú. CenUR Litoral Norte, Universidad de la República., 60000, Paysandú, Uruguay
| | - Pablo Cabral
- Área de Radiofarmacia, Centro de Investigaciones Nucleares Facultad de Ciencias, Universidad de la República, Mataojo 2055, 11400, Montevideo, Uruguay
| | - Francesc Teixidor
- Institut de Ciències dels Materials de Barcelona, ICMAB-CSIC Campus UAB, 08193, Bellaterra, Spain
| | - Hugo Cerecetto
- Grupo de Química Medicinal, Laboratorio de Química Orgánica, Facultad de Ciencias, Universidad de la República, Iguá 4225, 11400, Montevideo, Uruguay.,Área de Radiofarmacia, Centro de Investigaciones Nucleares Facultad de Ciencias, Universidad de la República, Mataojo 2055, 11400, Montevideo, Uruguay
| | - Clara Viñas
- Institut de Ciències dels Materials de Barcelona, ICMAB-CSIC Campus UAB, 08193, Bellaterra, Spain
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Zhao D, Zhang J, Xie Z. Regioselective insertion of o-carborynes into the α-C-H bond of tertiary amines: synthesis of α-carboranylated amines. Angew Chem Int Ed Engl 2014; 53:12902-6. [PMID: 25348374 DOI: 10.1002/anie.201409141] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2014] [Indexed: 11/11/2022]
Abstract
o-Carboryne can undergo α-CH bond insertion with tertiary amines, thus affording α-carboranylated amines in very good regioselectivity and isolated yields. In this process, the nucleophilic addition of tertiary amines to the multiple bond of o-carboryne generates a zwitterionic intermediate. An intramolecular proton transfer, followed by a nucleophilic attack leads to the formation of the final product. Thus, regioselectivity is highly dependent upon the acidity of α-CH proton of tertiary amines. This approach serves as an efficient methodology for the preparation of a series of 1-aminoalkyl-o-carboranes.
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Affiliation(s)
- Da Zhao
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, N.T., Hong Kong (China)
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Zhao D, Zhang J, Xie Z. Regioselective Insertion ofo-Carborynes into the α-CH Bond of Tertiary Amines: Synthesis of α-Carboranylated Amines. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201409141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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El-Zaria ME, Keskar K, Genady AR, Ioppolo JA, McNulty J, Valliant JF. High yielding synthesis of carboranes under mild reaction conditions using a homogeneous silver(I) catalyst: direct evidence of a bimetallic intermediate. Angew Chem Int Ed Engl 2014; 53:5156-60. [PMID: 24700630 DOI: 10.1002/anie.201311012] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2013] [Indexed: 11/07/2022]
Abstract
Methods used to prepare functionalized carboranes generally require heating to high temperatures, and thus limits the range of derivatives which can be prepared directly from alkynes. We show here that by using a homogeneous silver(I) catalyst it is now possible to prepare carboranes in good to excellent yield at temperatures below 40 °C, including at room temperature. The process is general and provides an important new synthetic strategy for the preparation of functionalized boron clusters.
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Affiliation(s)
- Mohamed E El-Zaria
- Department of Chemistry and Chemical Biology, McMaster University, 1280 Main St W., Hamilton, Ont., L8S 4M1 Canada; Department of Chemistry, Faculty of Science, Tanta University, 31527 Tanta (Egypt)
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McCrary PD, Barber PS, Kelley SP, Rogers RD. Nonaborane and Decaborane Cluster Anions Can Enhance the Ignition Delay in Hypergolic Ionic Liquids and Induce Hypergolicity in Molecular Solvents. Inorg Chem 2014; 53:4770-6. [DOI: 10.1021/ic500622f] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Parker D. McCrary
- Center
for Green Manufacturing and Department of
Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487, United States
| | - Patrick S. Barber
- Center
for Green Manufacturing and Department of
Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487, United States
| | - Steven P. Kelley
- Center
for Green Manufacturing and Department of
Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487, United States
| | - Robin D. Rogers
- Center
for Green Manufacturing and Department of
Chemistry, The University of Alabama, Box 870336, Tuscaloosa, Alabama 35487, United States
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10
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El-Zaria ME, Keskar K, Genady AR, Ioppolo JA, McNulty J, Valliant JF. High Yielding Synthesis of Carboranes Under Mild Reaction Conditions Using a Homogeneous Silver(I) Catalyst: Direct Evidence of a Bimetallic Intermediate. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201311012] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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11
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Douvris C, Michl J. Update 1 of:Chemistry of the Carba-closo-dodecaborate(−) Anion, CB11H12–. Chem Rev 2014; 113:PR179-233. [PMID: 23944158 DOI: 10.1021/cr400059k] [Citation(s) in RCA: 159] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Christos Douvris
- Institute of Organic Chemistry and Biochemistry, Academy of Science of the Czech Republic, 16610 Prague, Czech Republic
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
| | - Josef Michl
- Institute of Organic Chemistry and Biochemistry, Academy of Science of the Czech Republic, 16610 Prague, Czech Republic
- Department of Chemistry and Biochemistry, University of Colorado, Boulder, Colorado 80309-0215, United States
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Bondarev O, Sevryugina YV, Jalisatgi SS, Hawthorne MF. Acid-Induced Opening of [closo-B10H10]2– as a New Route to 6-Substituted nido-B10H13 Decaboranes and Related Carboranes. Inorg Chem 2012; 51:9935-42. [DOI: 10.1021/ic3014267] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Oleg Bondarev
- International Institute of Nano & Molecular Medicine, School of Medicine, University of Missouri, 1514 Research Park Drive, Columbia, Missouri 65211, United States
| | - Yulia V. Sevryugina
- International Institute of Nano & Molecular Medicine, School of Medicine, University of Missouri, 1514 Research Park Drive, Columbia, Missouri 65211, United States
| | - Satish S. Jalisatgi
- International Institute of Nano & Molecular Medicine, School of Medicine, University of Missouri, 1514 Research Park Drive, Columbia, Missouri 65211, United States
| | - M. Frederick Hawthorne
- International Institute of Nano & Molecular Medicine, School of Medicine, University of Missouri, 1514 Research Park Drive, Columbia, Missouri 65211, United States
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General Access to Aminobenzyl-o-carboranes as a New Class of Carborane Derivatives: Entry to Enantiopure Carborane-Amine Combinations. Chemistry 2009; 15:12030-42. [DOI: 10.1002/chem.200901332] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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15
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Li Y, Carroll PJ, Sneddon LG. Ionic-Liquid-Promoted Decaborane Dehydrogenative Alkyne-Insertion Reactions: A New Route to o-Carboranes. Inorg Chem 2008; 47:9193-202. [DOI: 10.1021/ic800999y] [Citation(s) in RCA: 67] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yuqi Li
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Patrick J. Carroll
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
| | - Larry G. Sneddon
- Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323
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