51
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Su B, Li Y, Ganguly R, Lim J, Kinjo R. Isolation and Reactivity of 1,4,2-Diazaborole. J Am Chem Soc 2015; 137:11274-7. [DOI: 10.1021/jacs.5b07823] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Bochao Su
- Division
of Chemistry
and Biological Chemistry, School of Physical and Mathematical Sciences, and ‡NTU-CBC Crystallography
Facility, Nanyang Technological University, 637371, Singapore
| | - Yongxin Li
- Division
of Chemistry
and Biological Chemistry, School of Physical and Mathematical Sciences, and ‡NTU-CBC Crystallography
Facility, Nanyang Technological University, 637371, Singapore
| | - Rakesh Ganguly
- Division
of Chemistry
and Biological Chemistry, School of Physical and Mathematical Sciences, and ‡NTU-CBC Crystallography
Facility, Nanyang Technological University, 637371, Singapore
| | - Jenny Lim
- Division
of Chemistry
and Biological Chemistry, School of Physical and Mathematical Sciences, and ‡NTU-CBC Crystallography
Facility, Nanyang Technological University, 637371, Singapore
| | - Rei Kinjo
- Division
of Chemistry
and Biological Chemistry, School of Physical and Mathematical Sciences, and ‡NTU-CBC Crystallography
Facility, Nanyang Technological University, 637371, Singapore
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52
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Brown AN, Li B, Liu SY. Negishi Cross-Coupling Is Compatible with a Reactive B-Cl Bond: Development of a Versatile Late-Stage Functionalization of 1,2-Azaborines and Its Application to the Synthesis of New BN Isosteres of Naphthalene and Indenyl. J Am Chem Soc 2015; 137:8932-5. [PMID: 26148959 DOI: 10.1021/jacs.5b05879] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
The compatibility of the Negishi cross-coupling reaction with the versatile B-Cl functionality has been demonstrated in the context of late-stage functionalization of 1,2-azaborines. Alkyl-, aryl-, and alkenylzinc reagents have been utilized for the functionalization of the triply orthogonal precursor 3-bromo-1-(tert-butyldimethylsilyl)-2-chloro-1,2-dihydro-1,2-azaborine (2) to furnish new 2,3-substituted monocyclic 1,2-azaborines. This methodology has enabled the synthesis of previously elusive BN-naphthalene and BN-indenyl structures from a common intermediate.
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Affiliation(s)
- Alec N Brown
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467-3860, United States
| | - Bo Li
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467-3860, United States
| | - Shih-Yuan Liu
- Department of Chemistry, Boston College, Chestnut Hill, Massachusetts 02467-3860, United States
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53
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Li T, Fu C, Liu Z, Guo S, Liu Z, Wen TB. Half-Sandwich B-Oxy Boratabenzene Ruthenium Complexes: Synthesis, Characterization, and Reactivity of (η6-C5H5BOR)RuCl(PPh3)2 (R = Et, Me). Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00319] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ting Li
- Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R. China
| | - Chen Fu
- Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R. China
| | - Zi Liu
- Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R. China
| | - Shuiliang Guo
- Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R. China
| | - Zicheng Liu
- Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R. China
| | - Ting-Bin Wen
- Department of Chemistry,
College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, P.R. China
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54
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1,3,2,5-Diazadiborinine featuring nucleophilic and electrophilic boron centres. Nat Commun 2015; 6:7340. [PMID: 26073993 PMCID: PMC4490389 DOI: 10.1038/ncomms8340] [Citation(s) in RCA: 78] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2015] [Accepted: 04/28/2015] [Indexed: 01/05/2023] Open
Abstract
The seminal discovery in 1865 by Kekulé that benzene nucleus exists with cyclic skeleton is considered to be the beginning of aromatic chemistry. Since then, a myriad of cyclic molecules displaying aromatic property have been synthesized. Meanwhile, borazine (B3N3H6), despite the isostructural and isoelectronic relationships with benzene, exhibits little aromaticity. Herein, we report the synthesis of a 1,3,2,5-diazadiborinine (B2C2N2R6) derivative, a hybrid inorganic/organic benzene, and we present experimental and computational evidence for its aromaticity. In marked contrast to the reactivity of benzene, borazine, and even azaborinines previously reported, 1,3,2,5-diazadiborinine readily forms the adducts with methyl trifluoromethanesulfonate and phenylacetylene without any catalysts. Moreover, 1,3,2,5-diazadiborine activates carbon dioxide giving rise to a bicycle[2,2,2] product, and the binding process was found to be reversible. These results, thus, demonstrate that 1,3,2,5-diazadiborinine features both nucleophilic and electrophilic boron centres, with a formal B(+I)/B(+III) mixed valence system, in the aromatic six-membered B2C2N2 ring. Boron atoms in aromatic heterocycles typically behave simply as electron pair acceptors. Here, the authors report an aromatic system containing both electrophilic and nucleophilic boron atoms, and demonstrate how this imparts frustrated Lewis pair type reactivity, including binding of carbon dioxide.
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55
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Wang XY, Zhuang FD, Wang XC, Cao XY, Wang JY, Pei J. Synthesis, structure and properties of C3-symmetric heterosuperbenzene with three BN units. Chem Commun (Camb) 2015; 51:4368-71. [PMID: 25598035 DOI: 10.1039/c4cc10105g] [Citation(s) in RCA: 70] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The parent skeleton of BN heterocoronene with three BN units and C3 symmetry was synthesized as a model compound of BN-doped graphene. Further investigation of this graphene-type molecule revealed the important role of BN doping in opening the bandgap and modulating the electronic properties.
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Affiliation(s)
- Xiao-Ye Wang
- Beijing National Laboratory for Molecular Sciences, Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, Center for Soft Matter Science and Engineering, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China.
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56
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Liu X, Wu P, Li J, Cui C. Synthesis of 1,2-borazaronaphthalenes from imines by base-promoted borylation of C-H bond. J Org Chem 2015; 80:3737-44. [PMID: 25710256 DOI: 10.1021/jo5029437] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
A new route from benzylic imines permits the synthesis of 1,2-borazaronaphthalenes in good yields. The reaction involves formation of the enamidyl dibromoborane, which undergoes base-promoted borylation of the nearby aromatic C-H bond. Electrophilic attack of the boron species onto the benzylic arene is supported by the slow borylation of arenes substituted with electron-withdrawing groups. The resultant boron bromides can be easily substituted with lithium reagents to provide a range of products. The electronic properties of these 1,2-borazaronaphthalene derivatives have been investigated by UV-vis and fluorescence spectroscopy.
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Affiliation(s)
- Xinwang Liu
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Cooperative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, People's Republic of China
| | - Pengbo Wu
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Cooperative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, People's Republic of China
| | - Jianfeng Li
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Cooperative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, People's Republic of China
| | - Chunming Cui
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Cooperative Innovation Center of Chemical Science and Engineering (Tianjin), Tianjin 300071, People's Republic of China
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57
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Nakamura T, Suzuki K, Yamashita M. Aluminabenzene–Zirconium Complexes: Intramolecular Coordination of Chloride to Aluminum. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00073] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Taichi Nakamura
- Department of Applied Chemistry,
Faculty of Science and Engineering, Chuo University, 1-13-27 Bunkyo-ku, Tokyo 112-8551, Japan
| | - Katsunori Suzuki
- Department of Applied Chemistry,
Faculty of Science and Engineering, Chuo University, 1-13-27 Bunkyo-ku, Tokyo 112-8551, Japan
| | - Makoto Yamashita
- Department of Applied Chemistry,
Faculty of Science and Engineering, Chuo University, 1-13-27 Bunkyo-ku, Tokyo 112-8551, Japan
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58
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Sun F, Huang M, Zhou Z, Fang X. 4a,8a-Azaboranaphthalene-4-yl phosphine ligands: synthesis and electronic modulation in Suzuki–Miyaura coupling reactions. RSC Adv 2015. [DOI: 10.1039/c5ra15929f] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Design, synthesis and characterization of new BN-aromatic phosphine ligands are presented, demonstrating moderate catalytic activity in Suzuki reactions of C–Cl bond.
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Affiliation(s)
- Feiye Sun
- Department of Chemistry
- Shanghai Key Laboratory of Chemical Assessment and Sustainability (CAS)
- Tongji University
- Shanghai 200092
- People's Republic of China
| | - Min Huang
- Department of Chemistry
- Shanghai Key Laboratory of Chemical Assessment and Sustainability (CAS)
- Tongji University
- Shanghai 200092
- People's Republic of China
| | - Zhaohui Zhou
- Department of Chemistry
- Xiamen University
- Xiamen
- People's Republic of China
| | - Xiangdong Fang
- Department of Chemistry
- Shanghai Key Laboratory of Chemical Assessment and Sustainability (CAS)
- Tongji University
- Shanghai 200092
- People's Republic of China
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59
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Jin R, Xiao W. Rational design of organoboron heteroarene derivatives as luminescent and charge transport materials for organic light-emitting diodes. NEW J CHEM 2015. [DOI: 10.1039/c5nj01499a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A series of organoboron heteroarene derivatives have been designed as luminescent and charge transport materials for OLEDs application.
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Affiliation(s)
- Ruifa Jin
- Inner Mongolia Key Laboratory of Photoelectric Functional Materials and College of Chemistry and Chemical Engineering
- Chifeng University
- Chifeng 024000
- China
| | - Wenmin Xiao
- Inner Mongolia Key Laboratory of Photoelectric Functional Materials and College of Chemistry and Chemical Engineering
- Chifeng University
- Chifeng 024000
- China
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60
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Abstract
Replacement of C=C unit with its isoelectronic B-N unit in aromatics provides a new class of molecules with appealing properties, which have attracted great attention recently. In this Concept, we focus on BN-substituted polycyclic aromatics with fused structures, and review their synthesis, photophysical, and redox properties, as well as their applications in organic electronics. We also present challenging synthetic targets, large BN- substituted polycyclic aromatics, such as regioregular BN heterosuperbenzenes, which can be viewed as BN-doped nanographenes. Finally, we propose an atomically precise bottom-up synthesis of structurally well-defined BN-doped graphenes.
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Affiliation(s)
- Xiao-Ye Wang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871 (P. R. China)
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61
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Sun F, Lv L, Huang M, Zhou Z, Fang X. Palladium-catalyzed cross-coupling reactions of 4a,8a-azaboranaphthalene. Org Lett 2014; 16:5024-7. [PMID: 25226093 DOI: 10.1021/ol502339h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A concise and effective three-step synthesis of 4a,8a-azaboranaphthalene (ABN) has been developed in gram scale. Electrophilic aromatic substitution reactions of ABN provide excellent functional-group-tolerant cross-coupling partners in various Pd-catalyzed cross-coupling reactions (e.g., Sonogashira, Suzuki-Miyaura, or Heck reaction). Photophysical, electrochemical, and DFT calculations all suggest a narrowed HOMO-LUMO gap with extended π-conjugation characters in the cross-coupled molecules. The ABN moiety as a new fluorophore has a distinct and selective fluorescence response toward Zn(II) and Cd(II) ions, demonstrating great potential for the ABN structural motif in fluorescent chemosensors.
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Affiliation(s)
- Feiye Sun
- Department of Chemistry, Key Laboratory of Yangtze River Water Environment (Ministry of Education), Tongji University , 1239 Siping Road, Yangpu District, Shanghai 210092, People's Republic of China
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62
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Hejda M, Jambor R, Růžička A, Lyčka A, Dostál L. Reduction of C,N-chelated chloroborane: straightforward formation of the unprecedented 1H-2,1-benzazaborolyl potassium salt. Dalton Trans 2014; 43:9012-5. [PMID: 24788675 DOI: 10.1039/c4dt00812j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Reduction of C,N-chelated chloroborane [2-(CH=NtBu)C6H4]BPhCl () with the potassium metal afforded (3,3')-bis(1-Ph-2-tBu-1H-2,1-benzazaborole) (2). Compound 2 is formed via C-C reductive coupling reaction. Subsequent reduction of 2 with two equivalents of the potassium metal produced orange crystals of 1Ph-2tBu-1H-2,1-benzazaborolyl (Bab) potassium salt K(THF)(Bab) (3). Compound 3 is able to react with simple electrophiles (MeI or Me3SiCl) resulting in the formation of substituted 1H-2,1-benzazaboroles.
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Affiliation(s)
- Martin Hejda
- Department of General and Inorganic Chemistry, Faculty of Chemical Technology, University of Pardubice, Studentská 573, CZ - 532 10, Pardubice, Czech Republic.
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63
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Xie L, Zhang J, Cui C. 2-Chloro-Azaborolyl Anion: A Source of 1,2-Azaborole Isosteric to Cyclopentadienylidene. Chemistry 2014; 20:9500-3. [DOI: 10.1002/chem.201403518] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/14/2014] [Indexed: 11/09/2022]
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64
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Wang Q, Motika SE, Akhmedov NG, Petersen JL, Shi X. Synthesis of Cyclic Amine Boranes through Triazole-Gold(I)-Catalyzed Alkyne Hydroboration. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201402614] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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65
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Wang Q, Motika SE, Akhmedov NG, Petersen JL, Shi X. Synthesis of Cyclic Amine Boranes through Triazole-Gold(I)-Catalyzed Alkyne Hydroboration. Angew Chem Int Ed Engl 2014; 53:5418-22. [DOI: 10.1002/anie.201402614] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2014] [Indexed: 11/09/2022]
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66
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Hatakeyama T, Hashimoto S, Nakamura M. Synthesis of Heteroatom-fused Polycyclic Aromatic Compounds via Tandem Hetero-Friedel-Crafts Reactions and Their Applications. J SYN ORG CHEM JPN 2014. [DOI: 10.5059/yukigoseikyokaishi.72.1391] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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67
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Abbey ER, Lamm AN, Baggett AW, Zakharov LN, Liu SY. Protecting group-free synthesis of 1,2-azaborines: a simple approach to the construction of BN-benzenoids. J Am Chem Soc 2013; 135:12908-13. [PMID: 23914914 DOI: 10.1021/ja4073436] [Citation(s) in RCA: 77] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
The protecting group-free synthesis of a versatile 1,2-azaborine synthon 5 is described. Previously inaccessible 1,2-azaborine derivatives, including the BN isostere of phenyl phenylacetate and BN1 triphenylmethane were prepared from 5 and characterized. The structural investigation of BN phenyl phenylacetate revealed the presence of a unique NH-carbonyl hydrogen bond that is not present in the corresponding carbonaceous analogue. The methyne CH in BN triphenylmethane was found to be less acidic than the corresponding proton in triphenylmethane. The gram-quantity synthesis of the parent 1,2-azaborine 4 was demonstrated, which enabled the characterization of its boiling point, density, refractive index, and its polarity on the ET(30) scale.
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Affiliation(s)
- Eric R Abbey
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, USA
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68
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Knack DH, Marshall JL, Harlow GP, Dudzik A, Szaleniec M, Liu SY, Heider J. BN/CC isosteric compounds as enzyme inhibitors: N- and B-ethyl-1,2-azaborine inhibit ethylbenzene hydroxylation as nonconvertible substrate analogues. Angew Chem Int Ed Engl 2013; 52:2599-601. [PMID: 23355270 PMCID: PMC3748812 DOI: 10.1002/anie.201208351] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2012] [Revised: 11/27/2012] [Indexed: 11/05/2022]
Abstract
Good substrate gone bad! BN/CC isosterism of ethylbenzene leads to N-ethyl-1,2-azaborine and B-ethyl-1,2-azaborine. In contrast to ethylbenzene, which is the substrate for ethylbenzene dehydrogenase (EbDH), N-ethyl-1,2-azaborine (see scheme; Fc=Ferricenium tetrafluoroborate) and B-ethyl-1,2-azaborine are strong inhibitors of EbDH. Thus, the changes provided by BN/CC isosterism can lead to new biochemical reactivity.
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Affiliation(s)
- Daniel H. Knack
- Laboratory for Microbial Biochemistry, Philipps University of Marburg, 35043 Marburg (Germany)
| | | | - Gregory P. Harlow
- Department of Chemistry, University of Oregon, Eugene, OR, 97403-1253 (USA)
| | - Agnieszka Dudzik
- Jerzy Haber Institute for Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Kraków (Poland)
| | - Maciej Szaleniec
- Jerzy Haber Institute for Catalysis and Surface Chemistry, Polish Academy of Sciences, 30-239 Kraków (Poland)
| | - Shih-Yuan Liu
- Department of Chemistry, University of Oregon, Eugene, OR, 97403-1253 (USA)
| | - Johann Heider
- Laboratory for Microbial Biochemistry, Philipps University of Marburg, 35043 Marburg (Germany)
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69
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Wang XY, Lin HR, Lei T, Yang DC, Zhuang FD, Wang JY, Yuan SC, Pei J. Azaborine Compounds for Organic Field-Effect Transistors: Efficient Synthesis, Remarkable Stability, and BN Dipole Interactions. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201209706] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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70
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Wang XY, Lin HR, Lei T, Yang DC, Zhuang FD, Wang JY, Yuan SC, Pei J. Azaborine compounds for organic field-effect transistors: efficient synthesis, remarkable stability, and BN dipole interactions. Angew Chem Int Ed Engl 2013; 52:3117-20. [PMID: 23400958 DOI: 10.1002/anie.201209706] [Citation(s) in RCA: 202] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Xiao-Ye Wang
- Beijing National Laboratory for Molecular Sciences, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, P. R. China
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71
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Knack DH, Marshall JL, Harlow GP, Dudzik A, Szaleniec M, Liu SY, Heider J. BN/CC-isosterische Verbindungen als Enzyminhibitoren: Hemmung der Hydroxylierung von Ethylbenzol durchN- undB-Ethyl-1,2-azaborin als nichtkonvertierbare Substratanaloga. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201208351] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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72
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Liu Z, Xu J, Ruan W, Fu C, Zhang HJ, Wen TB. A half-sandwich 1,2-azaborolyl ruthenium complex: synthesis, characterization, and evaluation of its catalytic activities. Dalton Trans 2013; 42:11976-80. [DOI: 10.1039/c3dt51177d] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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73
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Hejda M, Lyčka A, Jambor R, Růžička A, Dostál L. Reactivity of C,N-chelated organoboron compounds with lithium anilides – formation of unexpected 1,2,3-trisubstituted 1H-2,1-benzazaboroles. Dalton Trans 2013; 42:6417-28. [DOI: 10.1039/c3dt32850c] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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74
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Hatakeyama T, Hashimoto S, Oba T, Nakamura M. Azaboradibenzo[6]helicene: Carrier Inversion Induced by Helical Homochirality. J Am Chem Soc 2012; 134:19600-3. [DOI: 10.1021/ja310372f] [Citation(s) in RCA: 204] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Takuji Hatakeyama
- International Research Center
for Elements Science (IRCELS), Institute for Chemical Research (ICR), Kyoto University, Uji, Kyoto 611-0011, Japan
- PRESTO, Japan Science and Technology Agency (JST), Kawaguchi-shi, Saitama
332-0012, Japan
| | - Sigma Hashimoto
- International Research Center
for Elements Science (IRCELS), Institute for Chemical Research (ICR), Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Tsuyoshi Oba
- International Research Center
for Elements Science (IRCELS), Institute for Chemical Research (ICR), Kyoto University, Uji, Kyoto 611-0011, Japan
| | - Masaharu Nakamura
- International Research Center
for Elements Science (IRCELS), Institute for Chemical Research (ICR), Kyoto University, Uji, Kyoto 611-0011, Japan
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75
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Khafizova LO, Khusainova LI, Tyumkina TV, Dzhemilev UM. One-pot synthesis of borolanes by reaction of aluminacyclopentanes with BF3·Et2O. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2012. [DOI: 10.1134/s1070428012060012] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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76
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Chrostowska A, Xu S, Lamm AN, Mazière A, Weber CD, Dargelos A, Baylère P, Graciaa A, Liu SY. UV-photoelectron spectroscopy of 1,2- and 1,3-azaborines: a combined experimental and computational electronic structure analysis. J Am Chem Soc 2012; 134:10279-85. [PMID: 22616808 PMCID: PMC3380147 DOI: 10.1021/ja303595z] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
We present a comprehensive electronic structure analysis of structurally simple BN heterocycles using a combined UV-photoelectron spectroscopy (UV-PES)/computational chemistry approach. Gas-phase He I photoelectron spectra of 1,2-dihydro-1,2-azaborine 1, N-Me-1,2-BN-toluene 2, and N-Me-1,3-BN-toluene 3 have been recorded, assessed by density functional theory calculations, and compared with their corresponding carbonaceous analogues benzene and toluene. The first ionization energies of these BN heterocycles are in the order N-Me-1,3-BN-toluene 3 (8.0 eV) < N-Me-1,2-BN-toluene 2 (8.45 eV) < 1,2-dihydro-1,2-azaborine 1 (8.6 eV) < toluene (8.83 eV) < benzene (9.25 eV). The computationally determined molecular dipole moments are in the order 3 (4.577 D) > 2 (2.209 D) > 1 (2.154 D) > toluene (0.349 D) > benzene (0 D) and are consistent with experimental observations. The λ(max) in the UV-vis absorption spectra are in the order 3 (297 nm) > 2 (278 nm) > 1 (269 nm) > toluene (262 nm) > benzene (255 nm). We also establish that the measured anodic peak potentials and electrophilic aromatic substitution (EAS) reactivity of BN heterocycles 1-3 are consistent with the electronic structure description determined by the combined UV-PES/computational chemistry approach.
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Affiliation(s)
- Anna Chrostowska
- Institut des Sciences Analytiques et de Physico-Chimie pour l'Environnement et les Matériaux, UMR CNRS 5254, Université de Pau et des Pays de l'Adour, Avenue de l'Université, BP 1155, 64 013 Pau Cedex, France.
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77
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Hatakeyama T, Hashimoto S, Seki S, Nakamura M. Synthesis of BN-fused polycyclic aromatics via tandem intramolecular electrophilic arene borylation. J Am Chem Soc 2011; 133:18614-7. [PMID: 22026463 DOI: 10.1021/ja208950c] [Citation(s) in RCA: 246] [Impact Index Per Article: 18.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A tandem intramolecular electrophilic arene borylation reaction has been developed for the synthesis of BN-fused polycyclic aromatic compounds such as 4b-aza-12b-boradibenzo[g,p]chrysene (A) and 8b,11b-diaza-19b,22b-diborahexabenzo[a,c,fg,j,l,op]tetracene. These compounds adopt a twisted conformation, which results in a tight and offset face-to-face stacking array in the solid state. Time-resolved microwave conductivity measurements prove that the intrinsic hole mobility of A is comparable to that of rubrene, one of the most commonly used organic semiconductors, indicating that BN-substituted PAHs are potential candidates for organic electronic materials.
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Affiliation(s)
- Takuji Hatakeyama
- International Research Center for Elements Science, Institute for Chemical Research, Kyoto University, Uji, Kyoto 611-0011, Japan.
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78
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Pammer F, Lalancette RA, Jäkle F. Metallopolymers Featuring Boratabenzene Iron Complexes. Chemistry 2011; 17:11280-9. [DOI: 10.1002/chem.201101109] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2011] [Indexed: 11/08/2022]
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79
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Niemeyer J, Addy DA, Riddlestone I, Kelly M, Thompson AL, Vidovic D, Aldridge S. Extending the Chain: Synthetic, Structural, and Reaction Chemistry of a BN Allenylidene Analogue. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201103757] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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80
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Niemeyer J, Addy DA, Riddlestone I, Kelly M, Thompson AL, Vidovic D, Aldridge S. Extending the Chain: Synthetic, Structural, and Reaction Chemistry of a BN Allenylidene Analogue. Angew Chem Int Ed Engl 2011; 50:8908-11. [DOI: 10.1002/anie.201103757] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2011] [Indexed: 11/09/2022]
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81
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Affiliation(s)
- Adam J. V. Marwitz
- Department of Chemistry, University of Oregon, Eugene, OR 97403-1253 (USA)
| | - Jesse T. Jenkins
- Department of Chemistry, University of Oregon, Eugene, OR 97403-1253 (USA)
| | - Lev N. Zakharov
- Department of Chemistry, University of Oregon, Eugene, OR 97403-1253 (USA)
| | - Shih-Yuan Liu
- Department of Chemistry, University of Oregon, Eugene, OR 97403-1253 (USA)
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83
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Campbell PG, Zakharov LN, Grant DJ, Dixon DA, Liu SY. Hydrogen Storage by Boron−Nitrogen Heterocycles: A Simple Route for Spent Fuel Regeneration. J Am Chem Soc 2010; 132:3289-91. [DOI: 10.1021/ja9106622] [Citation(s) in RCA: 134] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Patrick G. Campbell
- Department of Chemistry, University of Oregon, Eugene, Oregon 97403, and Department of Chemistry, Shelby Hall, The University of Alabama, Tuscaloosa, Alabama 35487-0336
| | - Lev N. Zakharov
- Department of Chemistry, University of Oregon, Eugene, Oregon 97403, and Department of Chemistry, Shelby Hall, The University of Alabama, Tuscaloosa, Alabama 35487-0336
| | - Daniel J. Grant
- Department of Chemistry, University of Oregon, Eugene, Oregon 97403, and Department of Chemistry, Shelby Hall, The University of Alabama, Tuscaloosa, Alabama 35487-0336
| | - David A. Dixon
- Department of Chemistry, University of Oregon, Eugene, Oregon 97403, and Department of Chemistry, Shelby Hall, The University of Alabama, Tuscaloosa, Alabama 35487-0336
| | - Shih-Yuan Liu
- Department of Chemistry, University of Oregon, Eugene, Oregon 97403, and Department of Chemistry, Shelby Hall, The University of Alabama, Tuscaloosa, Alabama 35487-0336
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84
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Tang C, Thompson A, Aldridge S. Rhodium and Iridium Aminoborane Complexes: Coordination Chemistry of BN Alkene Analogues. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.200906171] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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85
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Tang C, Thompson A, Aldridge S. Rhodium and Iridium Aminoborane Complexes: Coordination Chemistry of BN Alkene Analogues. Angew Chem Int Ed Engl 2009; 49:921-5. [DOI: 10.1002/anie.200906171] [Citation(s) in RCA: 108] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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