1
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Tulyabaeva LI, Salakhutdinov RR, Tyumkina TV, Tulyabaev AR, Dzhemilev UM. First Synthesis of a New Class of Spiro-boracarbocycles by Cp2TiCl2-Catalyzed Cycloboration of Methylidenecycloalkanes with PhBCl2. RUSSIAN JOURNAL OF ORGANIC CHEMISTRY 2022. [DOI: 10.1134/s107042802212020x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
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2
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Campos-González R, Vázquez-Domínguez P, Remón P, Nájera F, Collado D, Pérez-Inestrosa E, Boscá F, Ros A, Pischel U. Bis-borylated arylisoquinoline-derived dyes with a central aromatic core: towards efficient fluorescent singlet-oxygen photosensitizers. Org Chem Front 2022. [DOI: 10.1039/d2qo00778a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Polycyclic aromatic hydrocarbon chromophores that show an ideal bipartition between fluorescence and singlet oxygen production have been developed.
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Affiliation(s)
- René Campos-González
- CIQSO – Centre for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva, Spain
- Facultad de Química, Departamento de Química Orgánica, Universidad Nacional Autónoma de México, Cto. Exterior s/n, Coyoacán, 04510 Ciudad de México, Mexico
| | - Pablo Vázquez-Domínguez
- Institute for Chemical Research, CSIC-US, C/Américo Vespucio 49, 41092 Seville, Spain
- Department of Organic Chemistry, Innovation Centre in Advanced Chemistry, ORFEO-CINQA, University of Seville, C/Prof. García González 1, 41012 Seville, Spain
| | - Patricia Remón
- CIQSO – Centre for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva, Spain
| | - Francisco Nájera
- Department of Organic Chemistry, IBIMA, University of Málaga, Campus Teatinos s/n, 29071 Málaga, Spain
- Andalusian Centre for Nanomedicine and Biotechnology, BIONAND, Parque Tecnológico de Andalucía, 29590 Málaga, Spain
| | - Daniel Collado
- Department of Organic Chemistry, IBIMA, University of Málaga, Campus Teatinos s/n, 29071 Málaga, Spain
- Andalusian Centre for Nanomedicine and Biotechnology, BIONAND, Parque Tecnológico de Andalucía, 29590 Málaga, Spain
| | - Ezequiel Pérez-Inestrosa
- Department of Organic Chemistry, IBIMA, University of Málaga, Campus Teatinos s/n, 29071 Málaga, Spain
- Andalusian Centre for Nanomedicine and Biotechnology, BIONAND, Parque Tecnológico de Andalucía, 29590 Málaga, Spain
| | - Francisco Boscá
- Instituto de Tecnología Química, Universitat Politècnica de València – Consejo Superior de Investigaciones Científicas, Avda. de los Naranjos s/n, 46022 Valencia, Spain
| | - Abel Ros
- Institute for Chemical Research, CSIC-US, C/Américo Vespucio 49, 41092 Seville, Spain
| | - Uwe Pischel
- CIQSO – Centre for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva, Campus de El Carmen s/n, 21071 Huelva, Spain
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3
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Wang H, Zhang J, Xie Z. Ring-opening and ring-expansion reactions of carborane-fused borirane. Chem Sci 2021; 12:13187-13192. [PMID: 34745550 PMCID: PMC8513813 DOI: 10.1039/d1sc04453b] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 09/09/2021] [Indexed: 11/22/2022] Open
Abstract
Though the reaction chemistry of three-membered ring molecules such as cyclopropanes and their heteroatom-containing analogues has been extensively studied, the chemical properties of their boron analogues, boriranes, are little known thus far. This work describes the diverse reactivity patterns of carborane-fused borirane 2. This borirane engages in ring-opening reactions with different types of Lewis acids, such as BBr3, GeCl2, GaCl3, BH3(SMe2) and HBpin, affording a series of ring-opening products, in which M–X or B–H bonds add across the B–C(cage) bond of the three-membered ring in 2. On the other hand, borirane 2 can undergo ring-expansion reactions with unsaturated molecules such as PhCHO, CO2 and PhCN to give ring-expansion products, five-membered boracycles, via a concerted reaction mechanism as supported by DFT calculations. The results of this work not only enrich the reaction chemistry of boriranes, but also offer new routes to boron-containing compounds and heterocycles. Carborane-fused borirane can not only engage in ring-opening reactions with different types of Lewis acids, but also undergo ring-expansion reactions with unsaturated molecules such as PhCHO, CO2 and PhCN to give five-membered boracycles.![]()
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Affiliation(s)
- Hanqiang Wang
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Jie Zhang
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
| | - Zuowei Xie
- Department of Chemistry, State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong Shatin, N. T. Hong Kong China
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4
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Dzhemilev UM, Khusainova LI, Ryazanov KS, Khafizova LO. Boron-containing small rings: synthesis, properties, and application prospects. Russ Chem Bull 2021. [DOI: 10.1007/s11172-021-3292-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Khusainova LI, Khafizova LO, Tyumkina TV, Salakhutdinov RR, Dzhemilev UM. α,ω-Dienes in Cp2TiCl2-catalyzed synthesis of boriranes. J Organomet Chem 2021. [DOI: 10.1016/j.jorganchem.2021.121981] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
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6
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Zhang Z, Wang Y, Wang W, Yamamoto Y, Bao M, Yu X. Convenient synthesis of tetracoordinated organoboron compounds via C H borylation of aryl-N-heteroaromatics with TfOB Bu2. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152199] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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7
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Haque A, Al-Balushi RA, Raithby PR, Khan MS. Recent Advances in π-Conjugated N^C-Chelate Organoboron Materials. Molecules 2020; 25:E2645. [PMID: 32517244 PMCID: PMC7321365 DOI: 10.3390/molecules25112645] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2020] [Revised: 06/03/2020] [Accepted: 06/04/2020] [Indexed: 11/17/2022] Open
Abstract
Boron-containing π-conjugated materials are archetypical candidates for a variety of molecular scale applications. The incorporation of boron into the π-conjugated frameworks significantly modifies the nature of the parent π-conjugated systems. Several novel boron-bridged π-conjugated materials with intriguing structural, photo-physical and electrochemical properties have been reported over the last few years. In this paper, we review the properties and multi-dimensional applications of the boron-bridged fused-ring π-conjugated systems. We critically highlight the properties of π-conjugated N^C-chelate organoboron materials. This is followed by a discussion on the potential applications of the new materials in opto-electronics (O-E) and other areas. Finally, attempts will be made to predict the future direction/outlook for this class of materials.
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Affiliation(s)
- Ashanul Haque
- Department of Chemistry, College of Science, University of Hail, Ha’il 81451, Saudi Arabia
| | - Rayya A. Al-Balushi
- Department of Basic Sciences, College of Applied and Health Sciences, A’Sharqiyah University, P.O. Box 42, Ibra 400, Sultanate of Oman;
| | - Paul R. Raithby
- Department of Chemistry, University of Bath, Claverton Down BA2 7AY, UK
| | - Muhammad S. Khan
- Department of Chemistry, Sultan Qaboos University, P.O. Box 36, Al-Khod 123, Sultanate of Oman
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8
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Zhu HY, Li QS. Insights into the Photoinduced Isomerization Mechanisms of a N,C-Chelate Organoboron Compound: A Theoretical Study. Chemphyschem 2020; 21:510-517. [PMID: 32040267 DOI: 10.1002/cphc.202000049] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2020] [Revised: 02/09/2020] [Indexed: 01/28/2023]
Abstract
As the first discovered organoboron compound with photochromic property, B(ppy)Mes2 (ppy=2-phenylpyridine, Mes=mesityl) displays rich photochemistry that constitutes a solid foundation for wide applications in optoelectronic fields. In this work, we investigated the B(ppy)Mes2 to borirane isomerization mechanisms in the three lowest electronic states (S0 , S1 , and T1 ) based on the complete active space self-consistent field (CASSCF) and its second-order perturbation (CASPT2) methods combined with time-dependent density functional theory (TD-DFT) calculations. Our results show that the photoisomerization in the S1 state is dominant, which is initiated by the cleavage of the B-Cppy bond. After overcoming a barrier of 0.5 eV, the reaction pathway leads to a conical intersection between the S1 and S0 states (S1 /S0 )x , from which the decay path may go back to the reactant B(ppy)Mes2 via a closed-shell intermediate (Int1-S0 ) or to the product borirane via a biradical intermediate (Int2-S0 ). Although triplet states are probably involved in the photoinduced process, the possibility of the photoisomerization in T1 state is very small owing to the weakly allowed S1 →T1 intersystem crossing and the high energy barrier (0.77 eV). In addition, we found the photoisomerization is thermally reversible, which is consistent with the experimental observations.
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Affiliation(s)
- Hong-Yang Zhu
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
| | - Quan-Song Li
- Beijing Key Laboratory of Photoelectronic/Electrophotonic Conversion Materials School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, 100081, China
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9
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Domínguez Z, Pais VF, Collado D, Vázquez-Domínguez P, Albendín FN, Pérez-Inestrosa E, Ros A, Pischel U. π-Extended Four-Coordinate Organoboron N,C-Chelates as Two-Photon Absorbing Chromophores. J Org Chem 2019; 84:13384-13393. [PMID: 31523970 DOI: 10.1021/acs.joc.9b01542] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Four-coordinate N,C-chelate organoboron dyes with alkynyl spacers were synthesized by Heck alkynylation. These dyes are π-extended analogues of the recently reported class of four-coordinate borylated arylisoquinolines (BAI). Depending on the electron-donor substitution, they feature an intramolecular charge-transfer (ICT) character in the excited state. This translates into pronounced apparent Stokes shifts (up to 8500 cm-1) and a solvatofluorochromic behavior. In general, the observed emission quantum yields are high in nonpolar media (ΦF ca. 0.5-0.6). For the dye with the most pronounced ICT rather high emission quantum yields (ΦF ca. 0.4) are observed for emissions with maxima longer than 600 nm in solvents of moderate polarity. The π-extended dyes show interesting two-photon absorption (TPA) properties, maintaining high cross sections (up to 60 GM) in the near-infrared wavelength window (>900 nm). One of the dyes was designed as dimeric chromophore, integrating the acceptor-π-acceptor (A-π-A) format. This alternative design showed no ICT behavior but led to the observation of high two-photon-absorption (TPA) cross sections (ca. 220 GM at 700 nm). All investigated dyes show pronounced photostability, providing added value to this structural and photofunctional extension of the BAI dye platform.
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Affiliation(s)
- Zoe Domínguez
- CIQSO - Center for Research in Sustainable Chemistry and Department of Chemistry , University of Huelva , Campus de El Carmen s/n , 21071 Huelva , Spain
| | - Vânia F Pais
- CIQSO - Center for Research in Sustainable Chemistry and Department of Chemistry , University of Huelva , Campus de El Carmen s/n , 21071 Huelva , Spain
| | - Daniel Collado
- Department of Organic Chemistry , University of Malaga, IBIMA , Campus Teatinos s/n , 29071 Málaga , Spain.,Andalusian Center for Nanomedicine and Biotechnology, BIONAND, Parque Tecnológico de Andalucía , 29590 Málaga , Spain
| | - Pablo Vázquez-Domínguez
- Institute for Chemical Research (CSIC-US) and Innovation-Center in Advanced Chemistry (ORFEO-CINQA) , C/Américo Vespucio 49 , 41092 Seville , Spain.,Department of Organic Chemistry , University of Seville , C/Prof. García González 1 , 41012 Seville , Spain
| | - Francisco Nájera Albendín
- Department of Organic Chemistry , University of Malaga, IBIMA , Campus Teatinos s/n , 29071 Málaga , Spain.,Andalusian Center for Nanomedicine and Biotechnology, BIONAND, Parque Tecnológico de Andalucía , 29590 Málaga , Spain
| | - Ezequiel Pérez-Inestrosa
- Department of Organic Chemistry , University of Malaga, IBIMA , Campus Teatinos s/n , 29071 Málaga , Spain.,Andalusian Center for Nanomedicine and Biotechnology, BIONAND, Parque Tecnológico de Andalucía , 29590 Málaga , Spain
| | - Abel Ros
- Institute for Chemical Research (CSIC-US) and Innovation-Center in Advanced Chemistry (ORFEO-CINQA) , C/Américo Vespucio 49 , 41092 Seville , Spain.,Department of Organic Chemistry , University of Seville , C/Prof. García González 1 , 41012 Seville , Spain
| | - Uwe Pischel
- CIQSO - Center for Research in Sustainable Chemistry and Department of Chemistry , University of Huelva , Campus de El Carmen s/n , 21071 Huelva , Spain
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10
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Li X, Shi Y, Wang N, Peng T, Wang S. Photoisomerization of Pt II Complexes Containing Two Different Photochromic Chromophores: Boron Chromophore versus Dithienylethene Chromophore. Chemistry 2019; 25:5757-5767. [PMID: 30791171 DOI: 10.1002/chem.201900279] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2019] [Indexed: 11/10/2022]
Abstract
In order to examine competitive photoisomerization, a series of novel photochromic PtII molecules that contain both dithienylethene (DTE) and B(ppy)Mes2 units (ppy=2-phenylpyridine, Mes=mesityl) were successfully synthesized and fully structurally characterized. Their photochromic properties were examined by UV/Vis, emission and NMR spectroscopy. It was found that the DTE unit in all three compounds is the preferred photoisomerization site, exhibiting reversible photochromism with irradiation. The B(ppy)Mes2 unit does not undergo photoisomerization in these molecules, but likely enhances the photoisomerization quantum efficiency of the DTE moiety through the antenna effect. Extended irradiation with UV light leads to the rearrangement of the ring-closed isomers of DTE. TD-DFT computational studies indicate that the DTE photocyclization proceeds via a triplet pathway through an efficient energy transfer process.
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Affiliation(s)
- Xue Li
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic, Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Yonggang Shi
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic, Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Nan Wang
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic, Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China
| | - Tai Peng
- School of Materials Science & Engineering, Jiamusi University, Jiamusi, Heilongjiang, 154007, P. R. China
| | - Suning Wang
- Key Laboratory of Cluster Science, Ministry of Education of China, Beijing Key Laboratory of Photoelectronic/Electrophotonic, Conversion Materials, School of Chemistry and Chemical Engineering, Beijing Institute of Technology, Beijing, P. R. China.,Department of Chemistry, Queen's University, Kingston, Ontario, K7L 3N6, Canada
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11
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Gao W, Liu J, Kityk IV. The Progress in the Field Auxiliary Donors and their Application in Novel Organic Second-Order Nonlinear Optical Chromophores. MINI-REV ORG CHEM 2019. [DOI: 10.2174/1570193x15666180627150155] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Conversion efficiency between electrical and optical signals is very important for the development
of modern information technologies. Due to their advantages in half-wave voltage, bandwidth, cost and integration,
as well as organic electro-optic (EO) parameters, these materials are widely studied and used in microwave
photonic devices. Second order nonlinear optical (NLO) chromophores, as the core of organic EO
materials have an increasing interest in this branch. Auxiliary donors present a new direction for the design and
improvement of organic NLO chromophores. In this short review, the advantages, theoretical calculations and
experimental results of auxiliary donors are reviewed and discussed in detail.
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Affiliation(s)
- Wu Gao
- Xi'An Catalyst New Materials Co., Ltd., Northwest Institute for Nonferrous Metal Research, Xi'an 710016, China
| | - Jialei Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Iwan V. Kityk
- Institute of Optoelectronics and Measuring Systems, Electrical Engineering Department, Czestochowa University Technology, PL-42-201, Czestochowa, Poland
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12
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Mellerup SK, Yousefalizadeh G, Wang S, Stamplecoskie KG. Experimental Evidence for a Triplet Biradical Excited-State Mechanism in the Photoreactivity of N,C-Chelate Organoboron Compounds. J Phys Chem A 2018; 122:9267-9274. [PMID: 30408414 DOI: 10.1021/acs.jpca.8b10624] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
N,C-chelate organoborates represent an emerging class of photoresponsive materials due to their photochromic switching at a boron center. Despite the promising applicability of such systems, little is known about the excited-state processes that lead to their unique photoreactivity, which is detrimental to the design of next-generation smart materials based on boron. As part of our ongoing effort to understand and improve the utility of these organoboron compounds, we report some of the first experimental evidence to support an excited-state mechanism for N,C-chelate organoborates. Femtosecond transient absorption spectroscopy combined with steady-state UV/vis and fluorescence measurements gives direct insight into their underlying photochemical processes, such as the formation of a common triplet charge-transfer state which either relaxes radiatively or undergoes the desired photoisomerization through a biradical intermediate. With this information, a complete mechanistic picture of the excited-state reactivity of N,C-chelate organoborates has been established, which is anticipated to lead to new smart materials with improved performance.
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Affiliation(s)
- Soren K Mellerup
- Department of Chemistry , Queen's University , Kingston , Ontario K7L3N6 , Canada
| | | | - Suning Wang
- Department of Chemistry , Queen's University , Kingston , Ontario K7L3N6 , Canada
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13
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Ito M, Ito E, Hirai M, Yamaguchi S. Donor-π-Acceptor Type Unsymmetrical Triarylborane-Based Fluorophores: Synthesis, Fluorescence Properties, and Photostability. J Org Chem 2018; 83:8449-8456. [PMID: 29846071 DOI: 10.1021/acs.joc.8b01015] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A two-step synthesis to prepare tricoordinate organoboron compounds bearing three different aryl groups has been developed. After the first aryl substitution to an aryl boronic ester took place, the intermediate species, that is, bis(diarylborinate) species, was isolated as an air- and moisture-stable solid, which allowed the second aryl substitution to carry out in a selective manner. Subsequently, a series of unsymmetrical triarylboranes possessing a sterically bulky aryl group, triarylamine moiety, and para-functionalized phenyl ring was synthesized. Not only did these triarylboranes exhibit remarkable solvent-dependent fluorescence as expected for donor-π-acceptor (D-π-A) systems, they were also accompanied by profound persistence against photoirradiation especially for that bearing a 1,3,5-tri- tert-butylphenyl ring. This survey exemplifies that sufficient electronic and steric modification is key to construct photostable D-π-A type triarylborane-based fluorophores.
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Affiliation(s)
- Masato Ito
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS) , Nagoya University , Furo, Chikusa , Nagoya 464-8602 , Japan
| | - Emi Ito
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS) , Nagoya University , Furo, Chikusa , Nagoya 464-8602 , Japan
| | - Masato Hirai
- Institute of Transformative Bio-Molecules (WPI-ITbM) , Nagoya University , Furo, Chikusa , Nagoya 464-8601 , Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science and Integrated Research Consortium on Chemical Sciences (IRCCS) , Nagoya University , Furo, Chikusa , Nagoya 464-8602 , Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM) , Nagoya University , Furo, Chikusa , Nagoya 464-8601 , Japan
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14
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Mishra S, Awasthi P, Singh J, Gupta RK, Singh V, Kant R, Jeet R, Goswami D, Goel A. White Light Induced E/Z-Photoisomerization of Diphenylamine-Tethered Fluorescent Stilbene Derivatives: Synthesis, Photophysical, and Electrochemical Investigation. J Org Chem 2018. [DOI: 10.1021/acs.joc.8b00033] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Shachi Mishra
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Pallavi Awasthi
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Jagriti Singh
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Rahul Kumar Gupta
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Vikram Singh
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ruchir Kant
- Molecular and Structural Biology Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Ram Jeet
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
| | - Debabrata Goswami
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, Uttar Pradesh, India
| | - Atul Goel
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute, Lucknow 226031, India
- Academy of Scientific and Innovative Research, New Delhi 110001, India
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15
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Krasowska M, Bettinger HF. Computational Study of the Isomerization Reactions of Borirane. J Org Chem 2018; 83:1804-1809. [PMID: 29384675 DOI: 10.1021/acs.joc.7b02715] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Borirane is isoelectronic to the cyclopropyl cation, but is stable toward electrocyclic ring opening to 2-bora-propa-1,3-diyl A, the boron analogue of the allyl cation. A computational investigation using density functional theory (B3LYP) in combination with highly correlated electronic structure theory methods of the coupled-cluster [CCSD(T)] and multireference configuration interaction (MRCI) type in conjunction with basis sets of up to quadruple-ζ quality reveal that formation of A is endothermic by roughly 15 kcal mol-1 and that A collapses almost without barrier (0.2 kcal mol-1) to borirane. The vinylborane isomer B is more stable than borirane and its formation is associated with a barrier of 36-38 kcal mol-1. Methyl methylideneborane E, only slightly less stable than B, can only be accessed by pathways involving barriers of at least 60 kcal mol-1.
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Affiliation(s)
- Małgorzata Krasowska
- Institut für Organische Chemie , Auf der Morgenstelle 18, 72076 Tübingen, Germany
| | - Holger F Bettinger
- Institut für Organische Chemie , Auf der Morgenstelle 18, 72076 Tübingen, Germany
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16
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Ando N, Fukazawa A, Kushida T, Shiota Y, Itoyama S, Yoshizawa K, Matsui Y, Kuramoto Y, Ikeda H, Yamaguchi S. Photochemical Intramolecular C-H Addition of Dimesityl(hetero)arylboranes through a [1,6]-Sigmatropic Rearrangement. Angew Chem Int Ed Engl 2017; 56:12210-12214. [PMID: 28792660 DOI: 10.1002/anie.201706929] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2017] [Indexed: 11/12/2022]
Abstract
A new reaction mode for triarylboranes under photochemical conditions was discovered. Photoirradiation of dimesitylboryl-substituted (hetero)arenes produced spirocyclic boraindanes, where one of the C-H bonds in the ortho-methyl groups of the mesityl substituents was formally added in a syn fashion to a C-C double bond of the (hetero)aryl group. Quantum chemical calculations and laser flash photolysis measurements indicated that the reaction proceeds through a [1,6]-sigmatropic rearrangement. This behavior is reminiscent of the photochemical reaction mode of arylalkenylketones, thus demonstrating the isosteric relation between tricoordinate organoboron compounds and the corresponding pseudo-carbocationic species in terms of pericyclic reactions. Despite the disrupted π-conjugation, the resulting spirocyclic boraindanes exhibited a characteristic absorption band at relatively long wavelengths (λ=370-400 nm).
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Affiliation(s)
- Naoki Ando
- Department of Chemistry, Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo Chikusa, Nagoya, 464-8602, Japan
| | - Aiko Fukazawa
- Department of Chemistry, Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo Chikusa, Nagoya, 464-8602, Japan
| | - Tomokatsu Kushida
- Department of Chemistry, Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo Chikusa, Nagoya, 464-8602, Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Shuhei Itoyama
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering, Kyushu University, 744 Motooka, Nishi-ku, Fukuoka, 819-0395, Japan
| | - Yasunori Matsui
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Yutaro Kuramoto
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Hiroshi Ikeda
- Department of Applied Chemistry, Graduate School of Engineering, Osaka Prefecture University, 1-1 Gakuen-cho, Naka-ku, Sakai, Osaka, 599-8531, Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS), Nagoya University, Furo Chikusa, Nagoya, 464-8602, Japan.,Institute of Transformative Bio-Molecules (WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya, 464-8602, Japan
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17
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Ando N, Fukazawa A, Kushida T, Shiota Y, Itoyama S, Yoshizawa K, Matsui Y, Kuramoto Y, Ikeda H, Yamaguchi S. Photochemical Intramolecular C−H Addition of Dimesityl(hetero)arylboranes through a [1,6]-Sigmatropic Rearrangement. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706929] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Naoki Ando
- Department of Chemistry; Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS); Nagoya University; Furo Chikusa Nagoya 464-8602 Japan
| | - Aiko Fukazawa
- Department of Chemistry; Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS); Nagoya University; Furo Chikusa Nagoya 464-8602 Japan
| | - Tomokatsu Kushida
- Department of Chemistry; Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS); Nagoya University; Furo Chikusa Nagoya 464-8602 Japan
| | - Yoshihito Shiota
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Shuhei Itoyama
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Kazunari Yoshizawa
- Institute for Materials Chemistry and Engineering; Kyushu University; 744 Motooka, Nishi-ku Fukuoka 819-0395 Japan
| | - Yasunori Matsui
- Department of Applied Chemistry; Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai Osaka 599-8531 Japan
| | - Yutaro Kuramoto
- Department of Applied Chemistry; Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai Osaka 599-8531 Japan
| | - Hiroshi Ikeda
- Department of Applied Chemistry; Graduate School of Engineering; Osaka Prefecture University; 1-1 Gakuen-cho, Naka-ku Sakai Osaka 599-8531 Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry; Graduate School of Science, and Integrated Research Consortium on Chemical Sciences (IRCCS); Nagoya University; Furo Chikusa Nagoya 464-8602 Japan
- Institute of Transformative Bio-Molecules (WPI-ITbM); Nagoya University; Furo, Chikusa Nagoya 464-8602 Japan
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18
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Wang H, Zhang J, Xie Z. Reversible Photothermal Isomerization of Carborane-Fused Azaborole to Borirane: Synthesis and Reactivity of Carbene-Stabilized Carborane-Fused Borirane. Angew Chem Int Ed Engl 2017; 56:9198-9201. [PMID: 28574198 DOI: 10.1002/anie.201704642] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Indexed: 11/10/2022]
Abstract
A fully reversible photothermal isomerization between carborane-fused trigonal-planar azaborole (dark-purple) and tetrahedral borirane (pale-yellow) has been observed, leading to the isolation and structural characterization of the first example of carborane-fused borirane. DFT calculations indicate that the azaborole is thermodynamically more stable than the borirane by 11.2 kcal mol-1 , and the energy barrier for the thermal conversion from azaborole to borirane is 35.5 kcal mol-1 . The reactivity studies show that the B-C(cage) bond in borirane can be broken in the reaction with CuCl, HCl, or elemental sulfur.
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Affiliation(s)
- Hao Wang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Jiji Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry, The Chinese University of Hong Kong, Shatin, New Territories, Hong Kong, China
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19
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Wang H, Zhang J, Xie Z. Reversible Photothermal Isomerization of Carborane-Fused Azaborole to Borirane: Synthesis and Reactivity of Carbene-Stabilized Carborane-Fused Borirane. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704642] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Hao Wang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin New Territories Hong Kong China
| | - Jiji Zhang
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin New Territories Hong Kong China
| | - Zuowei Xie
- Department of Chemistry and State Key Laboratory of Synthetic Chemistry; The Chinese University of Hong Kong; Shatin New Territories Hong Kong China
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20
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Wang J, Jin B, Wang N, Peng T, Li X, Luo Y, Wang S. Organoboron-Based Photochromic Copolymers for Erasable Writing and Patterning. Macromolecules 2017. [DOI: 10.1021/acs.macromol.7b00632] [Citation(s) in RCA: 53] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
| | | | | | | | | | | | - Suning Wang
- Department
of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario K7L
3N6, Canada
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21
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Shen C, Srebro-Hooper M, Jean M, Vanthuyne N, Toupet L, Williams JAG, Torres AR, Riives AJ, Muller G, Autschbach J, Crassous J. Synthesis and Chiroptical Properties of Hexa-, Octa-, and Deca-azaborahelicenes: Influence of Helicene Size and of the Number of Boron Atoms. Chemistry 2016; 23:407-418. [PMID: 27754565 DOI: 10.1002/chem.201604398] [Citation(s) in RCA: 85] [Impact Index Per Article: 10.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Indexed: 11/09/2022]
Abstract
Four members of a new class of cycloborylated hexa-, octa-, and deca-helicenes (1 a-d) have been prepared in enantiopure form, along with two cycloplatinated deca-helicenes (1 d', 1 d1 ), further extending the family of cycloplatinated hexa- and octa-helicenes reported previously. The azabora[n]helicenes display intense electronic circular dichroism and large optical rotations; the dependence of the optical activity on the size of the helix (n=6, 8, 10) and the number of boron atoms (1 or 2) has been examined in detail both experimentally and theoretically. The photophysical properties (nonpolarized and circularly polarized luminescence) of these new fluorescent organic helicenes have been measured and compared with the corresponding organometallic phosphorescent cycloplatinated derivatives (1 a1 -d1 ).
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Affiliation(s)
- Chengshuo Shen
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, 35042, Rennes Cedex, France
| | - Monika Srebro-Hooper
- Faculty of Chemistry, Jagiellonian University, R. Ingardena 3, 30-060, Krakow, Poland
| | - Marion Jean
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Nicolas Vanthuyne
- Aix Marseille University, CNRS, Centrale Marseille, iSm2, Marseille, France
| | - Loïc Toupet
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, 35042, Rennes Cedex, France
| | | | - Alexis R Torres
- Department of Chemistry, San José State University, San José, CA, 95192-0101, USA
| | - Adrian J Riives
- Department of Chemistry, San José State University, San José, CA, 95192-0101, USA
| | - Gilles Muller
- Department of Chemistry, San José State University, San José, CA, 95192-0101, USA
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo - State University of New York, Buffalo, NY, 14260, USA
| | - Jeanne Crassous
- Institut des Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, 35042, Rennes Cedex, France
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22
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Li X, Tong X, Yan H, Lu C, Zhao Q, Huang W. A Convenient Approach To Synthesizeo-Carborane-Functionalized Phosphorescent Iridium(III) Complexes for Endocellular Hypoxia Imaging. Chemistry 2016; 22:17282-17290. [DOI: 10.1002/chem.201603340] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Xiang Li
- State Key Laboratory of Coordination Chemistry; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
| | - Xiao Tong
- Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials; Nanjing University of Posts and Telecommunications; Nanjing 210023 P.R. China
| | - Hong Yan
- State Key Laboratory of Coordination Chemistry; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
| | - Changsheng Lu
- State Key Laboratory of Coordination Chemistry; School of Chemistry and Chemical Engineering; Nanjing University; Nanjing 210023 P.R. China
| | - Qiang Zhao
- Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials; Nanjing University of Posts and Telecommunications; Nanjing 210023 P.R. China
| | - Wei Huang
- Key Laboratory for Organic Electronics and Information Displays and Institute of Advanced Materials; Nanjing University of Posts and Telecommunications; Nanjing 210023 P.R. China
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23
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Pais VF, Ramírez-López P, Romero-Arenas A, Collado D, Nájera F, Pérez-Inestrosa E, Fernández R, Lassaletta JM, Ros A, Pischel U. Red-Emitting Tetracoordinate Organoboron Chelates: Synthesis, Photophysical Properties, and Fluorescence Microscopy. J Org Chem 2016; 81:9605-9611. [PMID: 27689446 DOI: 10.1021/acs.joc.6b01569] [Citation(s) in RCA: 28] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Seven tetracoordinate organoboron fluorophores with heterobiaryl N,O- or N,N-chelate ligands were prepared and photophysically characterized (in toluene). The electronic variation of the heteroaromatic moiety provided a means for the fine-tuning of the UV/vis absorption and emission spectra. In the most interesting cases, the spectra were red-shifted to maximum absorbance at wavelengths longer than 500 nm and emission maxima between 620 and 660 nm. The pronounced intramolecular charge-transfer character of the dyes yielded large Stokes shifts (3500-5100 cm-1), while maintaining appreciable fluorescence quantum yields of up to 0.2 for emission maxima longer than 600 nm. The lipophilic character of the dyes enabled their application as stains of vesicle substructures in confocal fluorescence microscopy imaging.
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Affiliation(s)
- Vânia F Pais
- CIQSO, Center for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva , Campus de El Carmen s/n, 21071 Huelva, Spain
| | - Pedro Ramírez-López
- Institute for Chemical Research (CSIC-US) and Innovation-Center in Advanced Chemistry (ORFEO-CINQA) , C/Américo Vespucio 49, 41092 Seville, Spain
| | - Antonio Romero-Arenas
- Institute for Chemical Research (CSIC-US) and Innovation-Center in Advanced Chemistry (ORFEO-CINQA) , C/Américo Vespucio 49, 41092 Seville, Spain
| | - Daniel Collado
- Department of Organic Chemistry, University of Málaga, IBIMA , Campus Teatinos s/n, 29071 Málaga, Spain.,Andalusian Center for Nanomedicine and Biotechnology, BIONAND , Parque Tecnológico de Andalucía, 29590 Málaga, Spain
| | - Francisco Nájera
- Department of Organic Chemistry, University of Málaga, IBIMA , Campus Teatinos s/n, 29071 Málaga, Spain.,Andalusian Center for Nanomedicine and Biotechnology, BIONAND , Parque Tecnológico de Andalucía, 29590 Málaga, Spain
| | - Ezequiel Pérez-Inestrosa
- Department of Organic Chemistry, University of Málaga, IBIMA , Campus Teatinos s/n, 29071 Málaga, Spain.,Andalusian Center for Nanomedicine and Biotechnology, BIONAND , Parque Tecnológico de Andalucía, 29590 Málaga, Spain
| | - Rosario Fernández
- Department of Organic Chemistry, University of Seville , and Innovation Center in Advanced Chemistry (ORFEO-CINQA), C/Prof. García González 1, 41012 Seville, Spain
| | - José M Lassaletta
- Institute for Chemical Research (CSIC-US) and Innovation-Center in Advanced Chemistry (ORFEO-CINQA) , C/Américo Vespucio 49, 41092 Seville, Spain
| | - Abel Ros
- Institute for Chemical Research (CSIC-US) and Innovation-Center in Advanced Chemistry (ORFEO-CINQA) , C/Américo Vespucio 49, 41092 Seville, Spain.,Department of Organic Chemistry, University of Seville , and Innovation Center in Advanced Chemistry (ORFEO-CINQA), C/Prof. García González 1, 41012 Seville, Spain
| | - Uwe Pischel
- CIQSO, Center for Research in Sustainable Chemistry and Department of Chemistry, University of Huelva , Campus de El Carmen s/n, 21071 Huelva, Spain
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24
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Mellerup SK, Yuan K, Nguyen C, Lu ZH, Wang S. Donor-Appended N,C-Chelate Organoboron Compounds: Influence of Donor Strength on Photochromic Behaviour. Chemistry 2016; 22:12464-72. [DOI: 10.1002/chem.201602410] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Soren K. Mellerup
- Department of Chemistry; Queen's University; 90 Bader Lane Kingston Ontario K7L 3N6 Canada
| | - Kang Yuan
- Department of Chemistry; Queen's University; 90 Bader Lane Kingston Ontario K7L 3N6 Canada
| | - Carmen Nguyen
- Department of Materials Science and Engineering; University of Toronto; 27 King's College Circle Toronto Ontario M5S 1A1 Canada
| | - Zheng-Hong Lu
- Department of Materials Science and Engineering; University of Toronto; 27 King's College Circle Toronto Ontario M5S 1A1 Canada
| | - Suning Wang
- Department of Chemistry; Queen's University; 90 Bader Lane Kingston Ontario K7L 3N6 Canada
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25
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Krasowska M, Bettinger HF. Ring Enlargement of Three-Membered Boron Heterocycles upon Reaction with Organic π Systems: Implications for the Trapping of Borylenes. Chemistry 2016; 22:10661-70. [DOI: 10.1002/chem.201600933] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2016] [Indexed: 11/06/2022]
Affiliation(s)
- Małgorzata Krasowska
- Institut für Organische Chemie; Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Holger F. Bettinger
- Institut für Organische Chemie; Universität Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
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26
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Kojima C, Lee KH, Lin Z, Yamashita M. Direct and Base-Catalyzed Diboration of Alkynes Using the Unsymmetrical Diborane(4), pinB-BMes2. J Am Chem Soc 2016; 138:6662-9. [PMID: 27139814 DOI: 10.1021/jacs.6b03686] [Citation(s) in RCA: 66] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
In the absence of transition metal catalysts, the unsymmetrical diborane(4), pinB-BMes2, reacted with alkynes to afford diborylalkenes. The isomer ratio of the products could be controlled via temperature, solvent, and additive(s). A reaction mechanism was proposed on the basis of two isolated intermediates, and this reaction could furthermore be applied to synthesize a luminescent molecule.
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Affiliation(s)
- Chiemi Kojima
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University , 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Ka-Ho Lee
- Department of Chemistry, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology , Clear Water Bay, Kowloon, Hong Kong
| | - Makoto Yamashita
- Department of Applied Chemistry, Faculty of Science and Engineering, Chuo University , 1-13-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
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27
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Gai L, Xu J, Wu Y, Lu H, Shen Z. Synthesis and spectroscopic properties of novel N–N linked bis-(diphenylboron) complexes. NEW J CHEM 2016. [DOI: 10.1039/c5nj03217b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel five-membered-ring and six-membered-ring bis-(diphenylboron) complexes are reported.
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Affiliation(s)
- Lizhi Gai
- State Key Laboratory of Coordination Chemistry
- Nanjing National Laboratory of Microstructures
- Nanjing University
- Nanjing
- P. R. China
| | - Jialiang Xu
- State Key Laboratory of Coordination Chemistry
- Nanjing National Laboratory of Microstructures
- Nanjing University
- Nanjing
- P. R. China
| | - Yanping Wu
- Key Laboratory of Organosilicon Chemistry and Material Technology
- Ministry of Education
- Hangzhou Normal University
- Hangzhou
- P. R. China
| | - Hua Lu
- Key Laboratory of Organosilicon Chemistry and Material Technology
- Ministry of Education
- Hangzhou Normal University
- Hangzhou
- P. R. China
| | - Zhen Shen
- State Key Laboratory of Coordination Chemistry
- Nanjing National Laboratory of Microstructures
- Nanjing University
- Nanjing
- P. R. China
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28
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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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29
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Pais VF, Alcaide MM, López-Rodríguez R, Collado D, Nájera F, Pérez-Inestrosa E, Álvarez E, Lassaletta JM, Fernández R, Ros A, Pischel U. Strongly Emissive and Photostable Four-Coordinate Organoboron N,C Chelates and Their Use in Fluorescence Microscopy. Chemistry 2015; 21:15369-76. [DOI: 10.1002/chem.201501626] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/26/2015] [Indexed: 11/09/2022]
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30
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Braunschweig H, Claes C, Damme A, Deissenberger A, Dewhurst RD, Hörl C, Kramer T. A facile and selective route to remarkably inert monocyclic NHC-stabilized boriranes. Chem Commun (Camb) 2015; 51:1627-30. [PMID: 25503081 DOI: 10.1039/c4cc09036e] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report a facile and selective synthetic route to monocyclic NHC-stabilized boriranes. We have succeeded in obtaining two highly stable new boriranes through salt elimination of NHC-stabilized dichloroboranes with the dianion of trans-stilbene, Na2[C14H12]. One borirane was observed to undergo reaction with [Pt(PEt3)3], in which the Pt(0) center oxidatively adds a backbone C-H bond of the NHC, leading to the isolation of the Pt(II) complex trans-[(Et3P)2PtH{C=CH(NMe)2C·BPh(C14H12)}]. The remarkable inertness of the NHC-boriranes suggests a strong stabilising effect of quaternization of the boron atom.
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Affiliation(s)
- Holger Braunschweig
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany.
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31
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Yu H, Hong B, Luo Y, Zhao H. Photoisomerization-switchable second-order nonlinear optical responses of dithienylethene-containing boron derivatives: a theoretical study. CAN J CHEM 2015. [DOI: 10.1139/cjc-2014-0391] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The switchable second-order nonlinear optical properties of a series of dithienylethene-containing boron compounds possessing reversible photochromic behavior have been systemically investigated based on density functional theory. The significant differences on the static first hyperpolarizabilities caused by the photoisomerization reaction confirm the switchable nonlinear optical behavior. Results show that the closed-ring 1c–4c possess large static first hyperpolarizabilitieswith respect to their corresponding open-ring 1o–4o, which is due to the better π-conjugation and a more obvious degree of charge transfer. Specifically, the static first hyperpolarizability values increase in the range of 2.4–5.2 times with the strengthening electron-withdrawing ability of the substituent R (R = H, CF3, NO2) on the pyridine and elongating the conjugated chains. It indicates that introducing boron-based functional groups to the dithienylethene monomer and modifying the pyridine ring can effectively improve the switching nonlinear optical responses.
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Affiliation(s)
- Hailing Yu
- College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, People’s Republic of China
| | - Bo Hong
- College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, People’s Republic of China
| | - Yunqing Luo
- College of Resources and Environmental Science, Jilin Agricultural University, Changchun 130118, People’s Republic of China
| | - Hongyan Zhao
- State Environmental Protection Key Laboratory of Wetland Ecology and Vegetation Restoration, Northeast Normal University, Changchun 130024, People’s Republic of China
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32
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Tasso TT, Furuyama T, Kobayashi N. Dinitriles Bearing AIE-Active Moieties: Synthesis,E/ZIsomerization, and Fluorescence Properties. Chemistry 2015; 21:4817-24. [DOI: 10.1002/chem.201406128] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/18/2014] [Indexed: 11/09/2022]
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33
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Sinha S, Mandal S, Gupta P. Cyclometalated iridium(iii) complexes of (aryl)ethenyl functionalized 2,2′-bipyridine: synthesis, photophysical properties and trans–cis isomerization behavior. RSC Adv 2015. [DOI: 10.1039/c5ra16214a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
The syntheses and photoinduced trans–cis isomerization behavior of 4,4′-(aryl)ethenyl functionalized 2,2′-bipyridyls and their cyclometalated iridium(iii) complexes have been investigated by NMR and electronic spectroscopy, X-ray crystallography and combined DFT-TDDFT studies.
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Affiliation(s)
- Soumalya Sinha
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Kolkata
- Mohanpur
- India
| | - Soumik Mandal
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Kolkata
- Mohanpur
- India
| | - Parna Gupta
- Department of Chemical Sciences
- Indian Institute of Science Education and Research (IISER) Kolkata
- Mohanpur
- India
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34
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Mellerup SK, Wang S. Benzothiaoline Three-Coordinated Organoboron Compounds with a B═N Bond: Dual Emission and Temperature-Dependent Excimer Fluorescence. Organometallics 2014. [DOI: 10.1021/om500757r] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Soren K. Mellerup
- Department of Chemistry, Queen’s University, Kingston, Ontario K7M 3N6, Canada
| | - Suning Wang
- Department of Chemistry, Queen’s University, Kingston, Ontario K7M 3N6, Canada
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35
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Matsuo K, Saito S, Yamaguchi S. Photodissociation of B–N Lewis Adducts: A Partially Fused Trinaphthylborane with Dual Fluorescence. J Am Chem Soc 2014; 136:12580-3. [DOI: 10.1021/ja506980p] [Citation(s) in RCA: 137] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Kyohei Matsuo
- Department of Chemistry, Graduate
School of Science and ‡Institute of Transformative Bio-Molecules
(WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Shohei Saito
- Department of Chemistry, Graduate
School of Science and ‡Institute of Transformative Bio-Molecules
(WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Graduate
School of Science and ‡Institute of Transformative Bio-Molecules
(WPI-ITbM), Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
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36
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Xie L, Zhang J, Hu H, Cui C. Synthesis and Reactions of π-Conjugated Iminoboranes Stabilized by Intramolecular Imine Groups. Organometallics 2013. [DOI: 10.1021/om4008407] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Liang Xie
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Collaborative Innovation
Center of Chemical Science and Technology (Tianjin), Tianjin 300071, People’s Republic of China
| | - Jianying Zhang
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Collaborative Innovation
Center of Chemical Science and Technology (Tianjin), Tianjin 300071, People’s Republic of China
| | - Hongfan Hu
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Collaborative Innovation
Center of Chemical Science and Technology (Tianjin), Tianjin 300071, People’s Republic of China
| | - Chunming Cui
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Collaborative Innovation
Center of Chemical Science and Technology (Tianjin), Tianjin 300071, People’s Republic of China
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37
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38
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Kuninobu Y, Iwanaga T, Omura T, Takai K. Palladium-Catalyzedortho-Selective CH Borylation of 2-Phenylpyridine and Its Derivatives at Room Temperature. Angew Chem Int Ed Engl 2013; 52:4431-4. [DOI: 10.1002/anie.201210328] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2012] [Revised: 02/19/2013] [Indexed: 11/09/2022]
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39
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Kuninobu Y, Iwanaga T, Omura T, Takai K. Palladium-Catalyzedortho-Selective CH Borylation of 2-Phenylpyridine and Its Derivatives at Room Temperature. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201210328] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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40
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Wang N, Ko SB, Lu JS, Chen LD, Wang S. Tuning the Photoisomerization of a N^C-Chelate Organoboron Compound with a MetalAcetylide Unit. Chemistry 2013; 19:5314-23. [DOI: 10.1002/chem.201204048] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2012] [Indexed: 11/08/2022]
Affiliation(s)
- Nan Wang
- Department of Chemistry, Queen's University, Kingston, Ontario, K7L 3N6, Canada
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41
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Rao YL, Amarne H, Lu JS, Wang S. Impact of a dithienyl unit on photostability of N,C-chelating boron compounds. Dalton Trans 2013; 42:638-44. [DOI: 10.1039/c2dt31370g] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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42
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Lu JS, Ko SB, Walters NR, Wang S. Decorating BODIPY with Three- and Four-Coordinate Boron Groups. Org Lett 2012; 14:5660-3. [DOI: 10.1021/ol302633s] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jia-sheng Lu
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Soo-Byung Ko
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Nicholas R. Walters
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Suning Wang
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
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43
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Hudson ZM, Ko SB, Yamaguchi S, Wang S. Modulating the Photoisomerization of N,C-Chelate Organoboranes with Triplet Acceptors. Org Lett 2012; 14:5610-3. [DOI: 10.1021/ol302742g] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Zachary M. Hudson
- Department of Chemistry, Queen’s University, Kingston, Ontario, K7L 3N6, Canada, and Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Soo-Byung Ko
- Department of Chemistry, Queen’s University, Kingston, Ontario, K7L 3N6, Canada, and Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Shigehiro Yamaguchi
- Department of Chemistry, Queen’s University, Kingston, Ontario, K7L 3N6, Canada, and Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
| | - Suning Wang
- Department of Chemistry, Queen’s University, Kingston, Ontario, K7L 3N6, Canada, and Department of Chemistry, Graduate School of Science, Nagoya University, Furo, Chikusa, Nagoya 464-8602, Japan
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44
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Braunschweig H, Chiu CW, Gamon D, Kaupp M, Krummenacher I, Kupfer T, Müller R, Radacki K. Synthesis, Structure, and Reactivity of Borole-Functionalized Ferrocenes. Chemistry 2012; 18:11732-46. [DOI: 10.1002/chem.201201317] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2012] [Indexed: 11/06/2022]
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45
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Araneda JF, Neue B, Piers WE, Parvez M. Photochemical synthesis of a ladder diborole: a new boron-containing conjugate material. Angew Chem Int Ed Engl 2012; 51:8546-50. [PMID: 22777828 DOI: 10.1002/anie.201204367] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2012] [Indexed: 11/07/2022]
Abstract
Climbing the ladder: Reductive cyclization of alkynyl haloboranes lead to the bis-benzocycloborabutylidene rather than the expected ladder diborole, despite the former being much less thermodynamically favored. Photochemical conversion to the ladder diborole was, however, quite facile upon irradiation at 254 nm.
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Affiliation(s)
- Juan F Araneda
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta T2N 1N4, Canada
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46
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Araneda JF, Neue B, Piers WE, Parvez M. Photochemical Synthesis of a Ladder Diborole: A New Boron‐Containing Conjugate Material. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204367] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Juan F. Araneda
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4 (Canada) http://www.chem.ucalgary.ca/research/groups/wpiers/
| | - Benedikt Neue
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4 (Canada) http://www.chem.ucalgary.ca/research/groups/wpiers/
| | - Warren E. Piers
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4 (Canada) http://www.chem.ucalgary.ca/research/groups/wpiers/
| | - Masood Parvez
- Department of Chemistry, University of Calgary, 2500 University Drive N.W., Calgary, Alberta, T2N 1N4 (Canada) http://www.chem.ucalgary.ca/research/groups/wpiers/
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47
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Nagura K, Saito S, Fröhlich R, Glorius F, Yamaguchi S. N-Heterocyclic Carbene Boranes as Electron-Donating and Electron-Accepting Components of π-Conjugated Systems. Angew Chem Int Ed Engl 2012; 51:7762-6. [DOI: 10.1002/anie.201204050] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2012] [Indexed: 11/09/2022]
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48
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Nagura K, Saito S, Fröhlich R, Glorius F, Yamaguchi S. N-Heterocyclic Carbene Boranes as Electron-Donating and Electron-Accepting Components of π-Conjugated Systems. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204050] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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49
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Rao YL, Chen LD, Mosey NJ, Wang S. Stepwise Intramolecular Photoisomerization of NHC-Chelate Dimesitylboron Compounds with C–C Bond Formation and C–H Bond Insertion. J Am Chem Soc 2012; 134:11026-34. [DOI: 10.1021/ja304211v] [Citation(s) in RCA: 84] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ying-Li Rao
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Leanne D. Chen
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Nicholas J. Mosey
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
| | - Suning Wang
- Department of Chemistry, Queen’s University, Kingston, Ontario K7L 3N6, Canada
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50
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Niu L, Yang H, Wang R, Fu H. Metal-Free Ortho C–H Borylation of 2-Phenoxypyridines under Mild Conditions. Org Lett 2012; 14:2618-21. [DOI: 10.1021/ol300950r] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Liting Niu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China, and Key Laboratory of Chemical Biology (Guangdong Province), Graduate School of Shenzhen, Tsinghua University, Shenzhen 518057, P. R. China
| | - Haijun Yang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China, and Key Laboratory of Chemical Biology (Guangdong Province), Graduate School of Shenzhen, Tsinghua University, Shenzhen 518057, P. R. China
| | - Ruji Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China, and Key Laboratory of Chemical Biology (Guangdong Province), Graduate School of Shenzhen, Tsinghua University, Shenzhen 518057, P. R. China
| | - Hua Fu
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, P. R. China, and Key Laboratory of Chemical Biology (Guangdong Province), Graduate School of Shenzhen, Tsinghua University, Shenzhen 518057, P. R. China
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