51
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Morgan MM, Patrick EA, Rautiainen JM, Tuononen HM, Piers WE, Spasyuk DM. Zirconocene-Based Methods for the Preparation of BN-Indenes: Application to the Synthesis of 1,5-Dibora-4a,8a-diaza-1,2,3,5,6,7-hexaaryl-4,8-dimethyl-s-indacenes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00051] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Matthew M. Morgan
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Evan A. Patrick
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - J. Mikko Rautiainen
- Department
of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box
35, FI-40014 Jyväskylä, Finland
| | - Heikki M. Tuononen
- Department
of Chemistry, Nanoscience Center, University of Jyväskylä, P.O. Box
35, FI-40014 Jyväskylä, Finland
| | - Warren E. Piers
- Department
of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
| | - Denis M. Spasyuk
- Canadian Light Source Inc. 44 Innovation Boulevard, Saskatoon, Saskatchewan S7N 2V3,Canada
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52
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Schickedanz K, Radtke J, Bolte M, Lerner HW, Wagner M. Facile Route to Quadruply Annulated Borepins. J Am Chem Soc 2017; 139:2842-2851. [PMID: 28125773 DOI: 10.1021/jacs.7b00268] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A two-step synthesis sequence furnishes quadruply annulated borepins in high yields. The first step involves a nucleophilic substitution reaction between aryl-BF3K salts (aryl = mesityl, phenyl) and lithiated bromonapthalene derivatives LiNaphBr,R (HNaphBr,R = 8-bromonaphthalene (a), 5-bromoacenaphthene (b), 5-bromoacenaphthylene (c)). In the second step, the resulting heteroleptic triarylboranes aryl-B(NaphBr,R)2 (3a-c) are subjected to an intramolecular Ni-mediated Yamamoto reaction to close the seven-membered rings and create the borepins 4a-c. Only in the case of 3b is the Yamamoto reaction accompanied by a C-H activation reaction furnishing the 7-hydro-7-borabenzo[de]anthracene derivative 5. The product ratio 4b/5 can be influenced by control of the local Ni(0) concentration. The borepins 4a-c are benchtop stable and highly soluble even in hexane. Compounds 4a-c undergo reversible one-electron reduction; 4c is also able to accept a second electron in a reversible manner and already at moderate potential values (E1/2 = -1.49 V and -1.84 V (vs FcH/FcH+)). 4a, 4b, and 5 show photoluminescence in the blue-green region of the spectrum, while 4c is nonfluorescent, which is likely attributable to an intramolecular charge-transfer transition.
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Affiliation(s)
- Kai Schickedanz
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt , Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Julian Radtke
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt , Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Michael Bolte
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt , Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt , Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Matthias Wagner
- Institut für Anorganische und Analytische Chemie, Goethe-Universität Frankfurt , Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
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53
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Wang Z, Zhou Y, Marder TB, Lin Z. DFT studies on reactions of boroles with carbon monoxide. Org Biomol Chem 2017; 15:7019-7027. [DOI: 10.1039/c7ob01475a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
DFT calculations were performed to study systematically the influence of borole substituents on the reaction of boroles with carbon monoxide.
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Affiliation(s)
- Zheng Wang
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Clear Water Bay
- P. R. China
| | - Yu Zhou
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Clear Water Bay
- P. R. China
| | - Todd B. Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with Boron
- Julius-Maximilians-Universität Würzburg
- Am Hubland
- Germany
| | - Zhenyang Lin
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Clear Water Bay
- P. R. China
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54
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55
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Katsuma Y, Asakawa H, Lee KH, Lin Z, Yamashita M. Ring Contraction of a Pinacolatoboryl Group To Form a 1,2-Oxaboretane Ring: Reaction of Unsymmetrical Diborane(4) with 2,6-Dimethylphenyl Isocyanide. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00468] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yuhei Katsuma
- Department
of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27, Kasuga, Bunkyo-ku, 112-8551 Tokyo, Japan
| | - Hiroki Asakawa
- Department
of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27, Kasuga, Bunkyo-ku, 112-8551 Tokyo, Japan
| | - Ka-Ho Lee
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People’s Republic of China
| | - Zhenyang Lin
- Department
of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong, People’s Republic of China
| | - Makoto Yamashita
- Department
of Applied Chemistry, Faculty of Science and Engineering, Chuo University, 1-13-27, Kasuga, Bunkyo-ku, 112-8551 Tokyo, Japan
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56
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Ren Y, Sezen M, Guo F, Jäkle F, Loo YL. [ d]-Carbon-carbon double bond engineering in diazaphosphepines: a pathway to modulate the chemical and electronic structures of heteropines. Chem Sci 2016; 7:4211-4219. [PMID: 30155067 PMCID: PMC6014086 DOI: 10.1039/c6sc00519e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2016] [Accepted: 03/15/2016] [Indexed: 11/21/2022] Open
Abstract
We have designed and synthesized the first examples of 7-membered diazaphosphepines using phosphorus-amine (P-N) chemistry. Different from previous functional protocols of heteropines, the installation of π-conjugated substituents having diverse chemistries at the [d]-C[double bond, length as m-dash]C double bond position of heteropine core allows us to effectively control the chemical and electronic structures in both the ground and excited states of these diazaphosphepines. This functionalization has led to a diverse set of crystal structures, which has in turn provided access to rich photophysical and redox properties. Of particular interest is the evidence for planar π-conjugated backbone in our non-aromatic heteropine and twisted intramolecular charge transfer, which have never been reported for heteropines. The introduction of electron-accepting substituents at [d]-position of diazaphosphepines results in heteropines that are more electron deficient than any heteropine reported to-date. As proof of concept, we have fabricated organic solar cells with heteropines as non-fullerene acceptors.
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Affiliation(s)
- Yi Ren
- Department of Chemical and Biological Engineering , Princeton University , NJ 08544 , USA .
| | - Melda Sezen
- Department of Chemical and Biological Engineering , Princeton University , NJ 08544 , USA .
| | - Fang Guo
- Department of Chemistry , Rutgers University , Newark , NJ 07102 , USA
| | - Frieder Jäkle
- Department of Chemistry , Rutgers University , Newark , NJ 07102 , USA
| | - Yueh-Lin Loo
- Department of Chemical and Biological Engineering , Princeton University , NJ 08544 , USA .
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57
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Parke SM, Boone MP, Rivard E. Marriage of heavy main group elements with π-conjugated materials for optoelectronic applications. Chem Commun (Camb) 2016; 52:9485-505. [PMID: 27344980 DOI: 10.1039/c6cc04023c] [Citation(s) in RCA: 136] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review article summarizes recent progress in the synthesis and optoelectronic properties of conjugated materials containing heavy main group elements from Group 13-16 as integral components. As will be discussed, the introduction of these elements can promote novel phosphorescent behavior and support desirable molecular and polymeric properties such as low optical band gaps and high charge mobilities for photovoltaic and thin film transistor applications.
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Affiliation(s)
- Sarah M Parke
- Department of Chemistry, University of Alberta, 11227 Saskatchewan Dr., Edmonton, Alberta, Canada T6G 2G2.
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58
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Schäfer M, Schäfer J, Dewhurst RD, Ewing WC, Krahfuß M, Kuntze-Fechner MW, Wehner M, Lambert C, Braunschweig H. Regioselective Catalytic and Stepwise Routes to Bulky, Functional-Group-Appended, and Luminescent 1,2-Azaborinines. Chemistry 2016; 22:8603-9. [PMID: 27166798 DOI: 10.1002/chem.201600653] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/11/2016] [Indexed: 01/01/2023]
Abstract
The regioselective syntheses of 1,2-azaborinines is achieved using an unsymmetrical iminoborane through both catalytic and stepwise modular routes. The 1,2-azaborinine ring can be selectively functionalized in the 4- and/or 6-position through control of the stepwise reaction sequence, allowing access to vinyl-functionalized and redox-active, luminescent, donor-functionalized 1,2-azaborinines. The electrochemistry and photochemistry of a tetraarylamine-substituted 1,2-azaborinine are studied. Cyclic voltammetry of this compound, relative to a non-B,N-substituted reference molecule, showed an additional oxidation wave assigned to the oxidation of the azaborinine ring, while emission spectroscopy indicated that the azaborinine was significantly more fluorescent than the reference.
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Affiliation(s)
- Marius Schäfer
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Julian Schäfer
- Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Institut für Organische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Rian D Dewhurst
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - William C Ewing
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Mirjam Krahfuß
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Maximilian W Kuntze-Fechner
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Marius Wehner
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074, Würzburg, Germany
| | - Christoph Lambert
- Wilhelm Conrad Röntgen Research Center for Complex Material Systems, Institut für Organische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
| | - Holger Braunschweig
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, 97074, Würzburg, Germany.
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59
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Barnard JH, Yruegas S, Couchman SA, Wilson DJD, Dutton JL, Martin CD. Reactivity of a Phosphaalkyne with Pentaarylboroles. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00123] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jonathan H. Barnard
- Department
of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7343, United States
| | - Sam Yruegas
- Department
of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7343, United States
| | - Shannon A. Couchman
- Department
of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne 3086, Australia
| | - David J. D. Wilson
- Department
of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne 3086, Australia
| | - Jason L. Dutton
- Department
of Chemistry and Physics, La Trobe Institute for Molecular Science, La Trobe University, Melbourne 3086, Australia
| | - Caleb D. Martin
- Department
of Chemistry and Biochemistry, Baylor University, One Bear Place #97348, Waco, Texas 76798-7343, United States
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60
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Zhang Z, Wang Z, Haehnel M, Eichhorn A, Edkins RM, Steffen A, Krueger A, Lin Z, Marder TB. Synthesis and fluxional behaviour of novel chloroborole dimers. Chem Commun (Camb) 2016; 52:9707-10. [DOI: 10.1039/c6cc04831e] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Two (B-Cl)-chloroboroles form unsymmetric dimers which are highly fluxional in solutionviareversible enantiomerisation through an intermediate with mirror symmetry.
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Affiliation(s)
- Zuolun Zhang
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
- State Key Laboratory of Supramolecular Structure and Materials
| | - Zheng Wang
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Kowloon
- P. R. China
| | - Martin Haehnel
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
| | - Antonius Eichhorn
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
| | - Robert M. Edkins
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
| | - Andreas Steffen
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
| | - Anke Krueger
- Institut für Organische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
| | - Zhenyang Lin
- Department of Chemistry
- The Hong Kong University of Science and Technology
- Kowloon
- P. R. China
| | - Todd B. Marder
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
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61
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Barnard JH, Yruegas S, Huang K, Martin CD. Ring expansion reactions of anti-aromatic boroles: a promising synthetic avenue to unsaturated boracycles. Chem Commun (Camb) 2016; 52:9985-91. [DOI: 10.1039/c6cc04330e] [Citation(s) in RCA: 76] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
The ability of anti-aromatic boroles to undergo ring expansion reactions with a broad range of substrates as an effective synthetic protocol towards a diverse array of 6-, 7-, and 8-membered boracycles is detailed in this review.
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Affiliation(s)
| | - Sam Yruegas
- Department of Chemistry and Biochemistry
- Baylor University
- Waco
- USA
| | - Kexuan Huang
- Department of Chemistry and Biochemistry
- Baylor University
- Waco
- USA
| | - Caleb D. Martin
- Department of Chemistry and Biochemistry
- Baylor University
- Waco
- USA
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62
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Yruegas S, Huang K, Wilson DJD, Dutton JL, Martin CD. Probing the reactivity of pentaphenylborole with N–H, O–H, P–H, and S–H bonds. Dalton Trans 2016; 45:9902-11. [DOI: 10.1039/c6dt00052e] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
The reactions of molecules containing E–H functionalities (E = Group 15 or 16 element) and pentaphenylborole were investigated revealing diverse outcomes.
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Affiliation(s)
- Sam Yruegas
- Baylor University
- Department of Chemistry and Biochemistry
- Waco
- USA
| | - Kexuan Huang
- Baylor University
- Department of Chemistry and Biochemistry
- Waco
- USA
| | - David J. D. Wilson
- Department of Chemistry and Physics
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - Jason L. Dutton
- Department of Chemistry and Physics
- La Trobe Institute for Molecular Science
- La Trobe University
- Melbourne
- Australia
| | - Caleb D. Martin
- Baylor University
- Department of Chemistry and Biochemistry
- Waco
- USA
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63
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Abstract
The reactions of isothiocyanates with the antiaromatic pentaphenylborole were investigated, revealing significantly different outcomes than the analogous reactions with isocyanates. The 1:1 stoichiometric reaction products isolated include a seven-membered BNC5 heterocycle and a fused bicyclic 4/5-ring system. Studies suggest that the seven-membered ring undergoes an intramolecular [2 + 2] electrocyclic ring closure to produce the bicyclic system. The only derivative for which stoichiometry influenced the reaction outcome was 4-methoxyphenylisothiocyanate. The reaction of borole with an excess of 4-methoxyphenylisothiocyanate resulted in the formation of a fused tetracyclic species with two equivalents of isothiocyanate incorporated into the product. Rational pathways for these unusual transformations are presented.
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Affiliation(s)
- Kexuan Huang
- Department of Chemistry and Biochemistry, Baylor University , One Bear Place #97348, Waco, Texas 76798, United States
| | - Caleb D Martin
- Department of Chemistry and Biochemistry, Baylor University , One Bear Place #97348, Waco, Texas 76798, United States
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64
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Wakamiya A, Yamaguchi S. Designs of Functional π-Electron Materials based on the Characteristic Features of Boron. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2015. [DOI: 10.1246/bcsj.20150151] [Citation(s) in RCA: 193] [Impact Index Per Article: 21.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science, and Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University
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65
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Großekappenberg H, Reißmann M, Schmidtmann M, Müller T. Quantitative Assessment of the Lewis Acidity of Silylium Ions. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00556] [Citation(s) in RCA: 74] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Henning Großekappenberg
- Institute of Chemistry, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Straße 9-11, D-26129 Oldenburg, Federal Republic of Germany
| | - Matti Reißmann
- Institute of Chemistry, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Straße 9-11, D-26129 Oldenburg, Federal Republic of Germany
| | - Marc Schmidtmann
- Institute of Chemistry, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Straße 9-11, D-26129 Oldenburg, Federal Republic of Germany
| | - Thomas Müller
- Institute of Chemistry, Carl von Ossietzky Universität Oldenburg, Carl von Ossietzky-Straße 9-11, D-26129 Oldenburg, Federal Republic of Germany
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66
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Hirai H, Nakajima K, Nakatsuka S, Shiren K, Ni J, Nomura S, Ikuta T, Hatakeyama T. One-Step Borylation of 1,3-Diaryloxybenzenes Towards Efficient Materials for Organic Light-Emitting Diodes. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201506335] [Citation(s) in RCA: 57] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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67
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Hirai H, Nakajima K, Nakatsuka S, Shiren K, Ni J, Nomura S, Ikuta T, Hatakeyama T. One-Step Borylation of 1,3-Diaryloxybenzenes Towards Efficient Materials for Organic Light-Emitting Diodes. Angew Chem Int Ed Engl 2015; 54:13581-5. [PMID: 26380959 DOI: 10.1002/anie.201506335] [Citation(s) in RCA: 218] [Impact Index Per Article: 24.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2015] [Revised: 08/07/2015] [Indexed: 11/07/2022]
Abstract
The development of a one-step borylation of 1,3-diaryloxybenzenes, yielding novel boron-containing polycyclic aromatic compounds, is reported. The resulting boron-containing compounds possess high singlet-triplet excitation energies as a result of localized frontier molecular orbitals induced by boron and oxygen. Using these compounds as a host material, we successfully prepared phosphorescent organic light-emitting diodes exhibiting high efficiency and adequate lifetimes. Moreover, using the present one-step borylation, we succeeded in the synthesis of an efficient, thermally activated delayed fluorescence emitter and boron-fused benzo[6]helicene.
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Affiliation(s)
- Hiroki Hirai
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan)
| | - Kiichi Nakajima
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan)
| | - Soichiro Nakatsuka
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan)
| | - Kazushi Shiren
- JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba 290-8551 (Japan)
| | - Jingping Ni
- JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba 290-8551 (Japan)
| | - Shintaro Nomura
- JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba 290-8551 (Japan)
| | - Toshiaki Ikuta
- JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba 290-8551 (Japan)
| | - Takuji Hatakeyama
- Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo 669-1337 (Japan). .,PRESTO (Japan) Science and Technology Agency, 5, Sanbancho, Chiyoda, Tokyo 102-0075 (Japan). .,ESICB, Kyoto University, Katsura, Kyoto 615-8520 (Japan).
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68
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Barnard JH, Brown PA, Shuford KL, Martin CD. 1,2-Phosphaborines: Hybrid Inorganic/Organic P-B Analogues of Benzene. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201507003] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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69
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Barnard JH, Brown PA, Shuford KL, Martin CD. 1,2-Phosphaborines: Hybrid Inorganic/Organic P-B Analogues of Benzene. Angew Chem Int Ed Engl 2015; 54:12083-6. [DOI: 10.1002/anie.201507003] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2015] [Indexed: 11/06/2022]
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70
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Ge F, Kehr G, Daniliuc CG, Mück-Lichtenfeld C, Erker G. Trisubstituted Boroles by 1,1-Carboboration. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00668] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Fang Ge
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
| | | | - Gerhard Erker
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
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71
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Zhang Z, Edkins RM, Haehnel M, Wehner M, Eichhorn A, Mailänder L, Meier M, Brand J, Brede F, Müller-Buschbaum K, Braunschweig H, Marder TB. Taming the beast: fluoromesityl groups induce a dramatic stability enhancement in boroles. Chem Sci 2015; 6:5922-5927. [PMID: 28791091 PMCID: PMC5523080 DOI: 10.1039/c5sc02205c] [Citation(s) in RCA: 79] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2015] [Accepted: 07/10/2015] [Indexed: 11/21/2022] Open
Abstract
Boroles with a fluoromesityl group on the B atom have greatly improved air stability compared to their mesityl analogues.
The electron-deficient pentaarylborole 1-(2′,4′,6′-tris(trifluoromethyl)phenyl)-2,3,4,5-tetraphenylborole (1) has been synthesised with the long-term aim of developing borole-based optoelectronic materials. The bulky 2,4,6-tris(trifluoromethyl)phenyl (FMes) group on the boron atom of 1 significantly improves (>600 times) its air stability relative to its mesityl analogue. Moreover, 1 shows good thermal stability without undergoing the dimerisation or isomerisation reactions reported for some other boroles. A triarylborole analogue (2), belonging to a new class of borole with the 3- and 4-positions of the BC4 ring linked by a –(CH2)3– group, has also been synthesised to elucidate the influence of carbon-bonded substituents on the stability of boroles. Both boroles were prepared through the reaction of Li[FMesBF3] and divinyldilithium reagents, a new and general method for borole syntheses. Compound 2 was found to isomerise through a [1,3]-H shift and double-bond rearrangement to an s-trans-butadienylborane species under highly basic (NaOH) conditions. The increased steric crowding at the boron centre through incorporation of the FMes group does not preclude binding of Lewis bases to either 1 or 2, as demonstrated by their fully reversible binding of pyridine. Interestingly, 1 exhibits a blue-shifted absorption spectrum, as compared with its mesityl analogue, a result contrary to previous understanding of the influence of substituent electronics on the absorption spectra of boroles. Most importantly, these boroles exhibit much greater air-stability than previously reported analogues without sacrificing the strong electron-accepting ability that makes boroles so attractive; indeed, 1 and 2 have very low reduction potentials of –1.52 and –1.69 eV vs. Fc/Fc+, respectively.
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Affiliation(s)
- Zuolun Zhang
- State Key Laboratory of Supramolecular Structure and Materials , College of Chemistry , Jilin University , Changchun 130012 , P. R. China.,Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Robert M Edkins
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Martin Haehnel
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Marius Wehner
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Antonius Eichhorn
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Lisa Mailänder
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Michael Meier
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Johannes Brand
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Franziska Brede
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Klaus Müller-Buschbaum
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Holger Braunschweig
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
| | - Todd B Marder
- Institut für Anorganische Chemie , Julius-Maximilians-Universität Würzburg , Am Hubland , 97074 Würzburg , Germany .
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72
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Araneda JF, Piers WE, Sgro MJ, Parvez M. Ring Expansion Reactions of Electron-Rich Boron-Containing Heterocycles. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00390] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Juan F. Araneda
- Department of Chemistry, University of Calgary, 2500 University
Drive Northwest, Calgary, Alberta, Canada T2N 1N4
| | - Warren E. Piers
- Department of Chemistry, University of Calgary, 2500 University
Drive Northwest, Calgary, Alberta, Canada T2N 1N4
| | - Michael J. Sgro
- Department of Chemistry, University of Calgary, 2500 University
Drive Northwest, Calgary, Alberta, Canada T2N 1N4
| | - Masood Parvez
- Department of Chemistry, University of Calgary, 2500 University
Drive Northwest, Calgary, Alberta, Canada T2N 1N4
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73
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Rivard E. Tellurophenes and Their Emergence as Building Blocks for Polymeric and Light-emitting Materials. CHEM LETT 2015. [DOI: 10.1246/cl.150119] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Eric Rivard
- Department of Chemistry, University of Alberta
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74
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Yan X, Xi C. Conversion of zirconacyclopentadienes into metalloles: Fagan-Nugent reaction and beyond. Acc Chem Res 2015; 48:935-46. [PMID: 25831225 DOI: 10.1021/ar500429f] [Citation(s) in RCA: 101] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Metalloles are derivatives of cyclopentadiene in which the methylene unit is replaced by a heteroatom, such as S, Se, Te, N, P, As, Sb, Bi, Si, Ge, Sn, B, Al, Ga, and so on. Many metallole derivatives have been widely used as photovoltaic cells, organic light emitting diodes (OLEDs), chemical sensors, electrochromic devices, microelectronic actuators, and organic field effect transistors (OFETs). In the meantime, many of them showed promising biological actives. Due to the similarity to cyclopentadiene, the anionic forms of metalloles were also widely explored in coordination chemistry. As a result, development of a general method for the formation of metalloles from available starting materials is highly desired. In this Account, we outline formation of various p-block element metalloles from zirconacyclopentadienes. The zirconacyclopentadienes can be easily prepared from two molecules of alkynes and a low-valent zirconocene species "Cp2Zr(II)" (Cp = cyclopentadienyl). Fagan and Nugent first reported the formation of main group metalloles from zirconacyclopentadiene, which provided a versatile approach for the construction of metalloles, especially for the formation of metalloles in heavier p-block elements. To further expand the substrate scope, a number of stepwise conversions were developed, which involve 1,4-dimetallo- or dihalo-1,3-butadiene as intermediates from zirconacyclopentadienes. Here, four processes are classified based on direct and indirect conversion of zirconacyclopentadienes into metalloles. Direct reaction of zirconacyclopentadienes with element halides afforded heterocycles of main group elements, which provided a versatile method for the synthesis of metalloles. Nonetheless, the reaction scope was restricted to heavier p-block elements such as S, Se, P, As, Sb, Bi, Ge, Sn, Ga, and In. And these reactions usually suffered low yields and long reaction time. Transmetalation of zirconacyclopentadiene with copper chloride greatly enriched the zirconacyclopentadiene chemistry. The synthesis of stannoles and pyrroles from zirconacyclopentadienes has been developed in the presence of CuCl. The direct reaction of the zirconacyclopentadienes with SiCl4 or R2SiCl2 does not give the desired silacyclopendadiene derivatives, even in the presence of CuCl. It can be circumvented by using dilithiated dienes from diiododienes, which are easily prepared by the iodination of zirconacyclopentadienes using CuCl as an additive. Finally, an umpolung strategy, reaction of electrophilic 1,4-diiodo-1,3-butadiene with nucleophilic amine or sulfide reagents, was successfully used in the formation of pyrroles and thiophenes.
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Affiliation(s)
- Xiaoyu Yan
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Chanjuan Xi
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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75
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Huang K, Martin CD. Ring expansion reactions of pentaphenylborole with dipolar molecules as a route to seven-membered boron heterocycles. Inorg Chem 2015; 54:1869-75. [PMID: 25599271 DOI: 10.1021/ic502784d] [Citation(s) in RCA: 58] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Reactions of pentaphenylborole with isocyanates, benzophenone, and benzaldehyde produced new seven-membered heterocycles in high yields. For 1-adamantyl isocyanate, a BNC5 heterocycle was obtained from the insertion of the C-N moiety into the five-membered borole, whereas for 4-methoxyphenyl isocyanate, a BOC5 heterocycle was generated from the insertion of the C-O unit. These reactions are believed to occur via a mechanism wherein coordination of the nucleophile to the borole (1-adamantyl, N-coordination or O-coordination for 4-methoxyphenyl) is followed by ring expansion to afford the observed seven-membered heterocycles. The selectivity to form B-O- or B-N-containing heterocycles is based on the polarization of the isocyanate implying tunable reactivity for the system. Having observed that isocyanates react as 1,2-dipoles with pentaphenylborole, we examined benzophenone and benzaldehyde, which both reacted to insert C-O units into the ring. This represents a new efficient method for preparing rare seven-membered boracycles.
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Affiliation(s)
- Kexuan Huang
- Baylor University , Department of Chemistry and Biochemistry, One Bear Place 97348, Waco, Texas 76798, United States
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76
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Jimenez-Halla JOC, Matito E, Solà M, Braunschweig H, Hörl C, Krummenacher I, Wahler J. A theoretical study of the aromaticity in neutral and anionic borole compounds. Dalton Trans 2015; 44:6740-7. [DOI: 10.1039/c4dt03445g] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A theoretical assessment of the degree of (anti)aromaticity in various borole compounds reveals distinct substituent effects.
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Affiliation(s)
| | - Eduard Matito
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química
- Universitat de Girona
- 17071 Girona (Catalonia)
- Spain
| | - Miquel Solà
- Institut de Química Computacional i Catàlisi (IQCC) and Departament de Química
- Universitat de Girona
- 17071 Girona (Catalonia)
- Spain
| | - Holger Braunschweig
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
| | - Christian Hörl
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
| | - Ivo Krummenacher
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
| | - Johannes Wahler
- Institut für Anorganische Chemie
- Julius-Maximilians-Universität Würzburg
- 97074 Würzburg
- Germany
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77
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Ge F, Kehr G, Daniliuc CG, Erker G. Reactions of Boroles Formed by 1,1-Carboboration. Organometallics 2014. [DOI: 10.1021/om501085j] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Fang Ge
- Organisch-Chemisches
Institut, Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches
Institut, Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches
Institut, Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
| | - Gerhard Erker
- Organisch-Chemisches
Institut, Universität Münster, Corrensstrasse 40, D-48149 Münster, Germany
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78
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Agou T, Wasano T, Sasamori T, Tokitoh N. Syntheses and Structures of Stable 1-Aminoalumole Derivatives. Organometallics 2014. [DOI: 10.1021/om501055f] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tomohiro Agou
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Tatsuya Wasano
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Takahiro Sasamori
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
| | - Norihiro Tokitoh
- Institute for Chemical Research, Kyoto University, Gokasho, Uji, Kyoto 611-0011, Japan
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79
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Direct observation of a borane–silane complex involved in frustrated Lewis-pair-mediated hydrosilylations. Nat Chem 2014; 6:983-8. [DOI: 10.1038/nchem.2063] [Citation(s) in RCA: 307] [Impact Index Per Article: 30.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2014] [Accepted: 08/18/2014] [Indexed: 12/21/2022]
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80
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Linshoeft J, Baum EJ, Hussain A, Gates PJ, Näther C, Staubitz A. Highly tin-selective stille coupling: synthesis of a polymer containing a stannole in the main chain. Angew Chem Int Ed Engl 2014; 53:12916-20. [PMID: 25258154 DOI: 10.1002/anie.201407377] [Citation(s) in RCA: 54] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/18/2014] [Indexed: 11/08/2022]
Abstract
The incorporation of heavier Group 14 element heteroles into semiconducting polymers leads to unusual optoelectronic properties. However, polymers containing stannoles have not been accessible to date. We report a synthetic route to a well-defined, stannole-containing polymer, the first example of this class of π-conjugated polymers. This route was made possible by developing difunctionalized stannole monomers and highly tin-selective Stille coupling reactions that leave the tin in the stannole untouched. Compared to poly(3-n-hexylthiophene), the resulting polymer displays a remarkable bathochromic shift in its absorption.
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Affiliation(s)
- Julian Linshoeft
- Otto-Diels-Institut für Organische Chemie, Universität Kiel, 24098 Kiel (Germany)
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81
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Linshoeft J, Baum EJ, Hussain A, Gates PJ, Näther C, Staubitz A. Hoch Zinn-selektive Stille-Kupplung: Polymersynthese mit einem Stannol in der Hauptkette. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201407377] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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82
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Iversen KJ, Wilson DJD, Dutton JL. A Computational Study on a Strategy for Isolating a Stable Cyclopentadienyl Cation. Chemistry 2014; 20:14132-8. [DOI: 10.1002/chem.201403748] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2014] [Revised: 07/17/2014] [Indexed: 11/10/2022]
Affiliation(s)
- Kalon J. Iversen
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086 (Australia)
| | - David J. D. Wilson
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086 (Australia)
| | - Jason L. Dutton
- Department of Chemistry, La Trobe Institute for Molecular Science, La Trobe University, Melbourne, Victoria 3086 (Australia)
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83
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Braunschweig H, Hörl C, Mailänder L, Radacki K, Wahler J. Antiaromaticity to aromaticity: from boroles to 1,2-azaborinines by ring expansion with azides. Chemistry 2014; 20:9858-61. [PMID: 24964998 DOI: 10.1002/chem.201403101] [Citation(s) in RCA: 109] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2014] [Indexed: 11/11/2022]
Abstract
We have exploited the reactivity of antiaromatic boroles, gaining access to aryl-substituted monocyclic 1,2-azaborinines. The observed ring-expansion reaction of inherently electron-deficient boroles with organometallic and organic azides is demonstrated for representative examples. This substance class is expected to provide a new avenue into 1,2-azaborinine chemistry, especially in the area of functional organoboron materials. Our results are based on NMR and UV/Vis spectroscopy as well as single-crystal X-ray crystallography and provide a virtually quantitative approach that also offers numerous points of variation.
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Affiliation(s)
- Holger Braunschweig
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg (Germany) http://www-anorganik.ak-braunschweig.chemie.uni-wuerzburg.de/.
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84
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Couchman SA, Wilson DJD, Dutton JL. Is the Perfluorinated Trityl Cation Worth a Revisit? A Theoretical Study on the Lewis Acidities and Stabilities of Highly Halogenated Trityl Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402263] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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85
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Àrias Ò, Petrov AR, Bannenberg T, Altenburger K, Arndt P, Jones PG, Rosenthal U, Tamm M. Titanocene and Zirconocene Complexes with Diaminoacetylenes: Formation of Unusual Metallacycles and Fulvene Complexes. Organometallics 2014. [DOI: 10.1021/om500121p] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Òscar Àrias
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, D-38106 Braunschweig, Germany
| | - Alex R. Petrov
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, D-38106 Braunschweig, Germany
| | - Thomas Bannenberg
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, D-38106 Braunschweig, Germany
| | - Kai Altenburger
- Leibniz-Institut
für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße
29a, D-18059 Rostock, Germany
| | - Perdita Arndt
- Leibniz-Institut
für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße
29a, D-18059 Rostock, Germany
| | - Peter G. Jones
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, D-38106 Braunschweig, Germany
| | - Uwe Rosenthal
- Leibniz-Institut
für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße
29a, D-18059 Rostock, Germany
| | - Matthias Tamm
- Institut für Anorganische
und Analytische Chemie, Technische Universität Braunschweig, Hagenring
30, D-38106 Braunschweig, Germany
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86
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Wasano T, Agou T, Sasamori T, Tokitoh N. Synthesis, structure and reactivity of a 1-bromoalumole. Chem Commun (Camb) 2014; 50:8148-50. [DOI: 10.1039/c4cc03470h] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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87
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Houghton AY, Karttunen VA, Piers WE, Tuononen HM. Hydrogen activation with perfluorinated organoboranes: 1,2,3-tris(pentafluorophenyl)-4,5,6,7-tetrafluoro-1-boraindene. Chem Commun (Camb) 2014; 50:1295-8. [DOI: 10.1039/c3cc48796b] [Citation(s) in RCA: 51] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Experimental and computational data shows that a new perfluorinated boraindene reacts reversibly with H2 to form a reactive hydroborane that can be trapped with an olefin.
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Affiliation(s)
| | | | - Warren E. Piers
- Department of Chemistry
- University of Calgary
- Calgary, Canada T2N 1N4
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88
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Araneda JF, Piers WE, Sgro MJ, Parvez M. Bronsted acid-catalyzed skeletal rearrangements in polycyclic conjugated boracycles: a thermal route to a ladder diborole. Chem Sci 2014. [DOI: 10.1039/c4sc01201a] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A Bronsted acid-catalysed rearrangement of a dianionic boron containing heterocycle provides efficient access to diborapentalenes.
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Affiliation(s)
| | | | | | - Masood Parvez
- Department of Chemistry
- University of Calgary
- Calgary, Canada
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89
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Abstract
Bis(trimethylsilylethynyl)diphenylaminoborane was reacted with the strong Lewis acid B(C6F5)3 at ambient temperature to give the borole 9 admixed with a small amount of its thermal follow-up product 12. Compound 9 was subsequently stabilized by adduct formation with pyridine (10). Treatment of bis(trimethylsilylethynyl)phenylborane with B(C6F5)3 gave the borole 14, which reacted with 3-hexyne to give the [4 + 2] cycloaddition product 15.
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Affiliation(s)
- Fang Ge
- Organisch-Chemisches Institut, Universität Münster , Corrensstrasse 40, D-48149 Münster, Germany
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90
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Saito M, Akiba T, Kaneko M, Kawamura T, Abe M, Hada M, Minoura M. Synthesis, Structure, and Reactivity of Lewis Base Stabilized Plumbacyclopentadienylidenes. Chemistry 2013; 19:16946-53. [DOI: 10.1002/chem.201303672] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2013] [Indexed: 11/06/2022]
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91
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Shen CT, Liu YH, Peng SM, Chiu CW. A Di-Substituted Boron Dication and Its Hydride-Induced Transformation to an NHC-Stabilized Borabenzene. Angew Chem Int Ed Engl 2013; 52:13293-7. [DOI: 10.1002/anie.201308385] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2013] [Indexed: 11/09/2022]
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92
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Shen CT, Liu YH, Peng SM, Chiu CW. A Di-Substituted Boron Dication and Its Hydride-Induced Transformation to an NHC-Stabilized Borabenzene. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201308385] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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93
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Bauer J, Braunschweig H, Hörl C, Radacki K, Wahler J. Synthesis of Zwitterionic Cobaltocenium Borate and Borata-alkene Derivatives from a Borole-Radical Anion. Chemistry 2013; 19:13396-401. [DOI: 10.1002/chem.201302201] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2013] [Indexed: 11/11/2022]
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94
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Ge F, Kehr G, Daniliuc CG, Erker G. Unusual Pathway Taken in the Reaction of Bis(alkynyl)diisopropylaminoboranes with B(C6F5)3. Chem Asian J 2013; 8:2227-34. [DOI: 10.1002/asia.201300536] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/17/2013] [Indexed: 11/08/2022]
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95
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Matsumoto T, Tanaka K, Chujo Y. Synthesis and Optical Properties of Stable Gallafluorene Derivatives: Investigation of Their Emission via Triplet States. J Am Chem Soc 2013; 135:4211-4. [DOI: 10.1021/ja400287y] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Takuya Matsumoto
- Department of Polymer Chemistry,
Graduate School of
Engineering, Kyoto University, Katsura,
Nishikyo-ku, Kyoto 615-8510, Japan
| | - Kazuo Tanaka
- Department of Polymer Chemistry,
Graduate School of
Engineering, Kyoto University, Katsura,
Nishikyo-ku, Kyoto 615-8510, Japan
| | - Yoshiki Chujo
- Department of Polymer Chemistry,
Graduate School of
Engineering, Kyoto University, Katsura,
Nishikyo-ku, Kyoto 615-8510, Japan
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96
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Houghton AY, Karttunen VA, Fan C, Piers WE, Tuononen HM. Mechanistic Studies on the Metal-Free Activation of Dihydrogen by Antiaromatic Pentarylboroles. J Am Chem Soc 2013; 135:941-7. [DOI: 10.1021/ja311842r] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Affiliation(s)
- Adrian Y. Houghton
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary,
Alberta, Canada T2N 1N4
| | - Virve A. Karttunen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35,
FI-40014 Jyväskylä, Finland
| | - Cheng Fan
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary,
Alberta, Canada T2N 1N4
| | - Warren E. Piers
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary,
Alberta, Canada T2N 1N4
| | - Heikki M. Tuononen
- Department of Chemistry, University of Jyväskylä, P.O. Box 35,
FI-40014 Jyväskylä, Finland
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Beweries T, Haehnel M, Rosenthal U. Recent advances in the chemistry of heterometallacycles of group 4 metallocenes. Catal Sci Technol 2013. [DOI: 10.1039/c2cy20603j] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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Thilagar P, Murillo D, Chen J, Jäkle F. Synthesis and supramolecular assembly of the bifunctional borinic acid [1,2-fcB(OH)]2. Dalton Trans 2013; 42:665-70. [DOI: 10.1039/c2dt31625k] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Braunschweig H, Damme A, Jimenez-Halla JOC, Hörl C, Krummenacher I, Kupfer T, Mailänder L, Radacki K. 1-Heteroaromatic-Substituted Tetraphenylboroles: π–π Interactions Between Aromatic and Antiaromatic Rings Through a B–C Bond. J Am Chem Soc 2012; 134:20169-77. [DOI: 10.1021/ja309935t] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Holger Braunschweig
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074
Würzburg, Germany
| | - Alexander Damme
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074
Würzburg, Germany
| | - J. Oscar C. Jimenez-Halla
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074
Würzburg, Germany
| | - Christian Hörl
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074
Würzburg, Germany
| | - Ivo Krummenacher
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074
Würzburg, Germany
| | - Thomas Kupfer
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074
Würzburg, Germany
| | - Lisa Mailänder
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074
Würzburg, Germany
| | - Krzysztof Radacki
- Institut für Anorganische Chemie, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074
Würzburg, Germany
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