1
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Oishi T, Lugo-Fuentes LI, Jing Y, Jimenez-Halla JOC, Barroso-Flores J, Nakamoto M, Yamamoto Y, Tsunoji N, Shang R. Proton to hydride umpolung at a phosphonium center via electron relay: a new strategy for main-group based water reduction. Chem Sci 2021; 12:15603-15608. [PMID: 35003590 PMCID: PMC8654027 DOI: 10.1039/d1sc05135k] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 11/13/2021] [Indexed: 11/21/2022] Open
Abstract
Generation of dihydrogen from water splitting, also known as water reduction, is a key process to access a sustainable hydrogen economy for energy production and usage. The key step is the selective reduction of a protic hydrogen to an accessible and reactive hydride, which has proven difficult at a p-block element. Although frustrated Lewis pair (FLP) chemistry is well known for water activation by heterolytic H-OH bond cleavage, to the best of our knowledge, there has been only one case showing water reduction by metal-free FLP systems to date, in which silylene (SiII) was used as the Lewis base. This work reports the molecular design and synthesis of an ortho-phenylene linked bisborane-functionalized phosphine, which reacts with water stoichiometrically to generate H2 and phosphine oxide quantitatively under ambient conditions. Computational investigations revealed an unprecedented multi-centered electron relay mechanism offered by the molecular framework, shuttling a pair of electrons from hydroxide (OH-) in water to the separated proton through a borane-phosphonium-borane path. This simple molecular design and its water reduction mechanism opens new avenues for this main-group chemistry in their growing roles in chemical transformations.
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Affiliation(s)
- Takumi Oishi
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Leonardo I Lugo-Fuentes
- Department of Chemistry, Division of Natural and Exact Sciences, University of Guanajuato, Campus Gto Noria Alta s/n 36050 Guanajuato Mexico
| | - Yichuan Jing
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - J Oscar C Jimenez-Halla
- Department of Chemistry, Division of Natural and Exact Sciences, University of Guanajuato, Campus Gto Noria Alta s/n 36050 Guanajuato Mexico
| | - Joaquín Barroso-Flores
- Centro Conjunto de Investigación en Química Sustentable UAEM-UNAM, Unidad San Cayetano 50200 Toluca de lerdo México
- Instituto de Química, Universidad Nacional Autónoma de México Circuito Exterior S/N, Ciudad Universitaria, alcaldía de Coyoacán CP 04510 Ciudad de México México
| | - Masaaki Nakamoto
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Yohsuke Yamamoto
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
| | - Nao Tsunoji
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University 1-4-1 Kagamiyama Higashi-Hiroshima 739-8527 Japan
| | - Rong Shang
- Department of Chemistry, Graduate School of Advanced Science and Engineering, Hiroshima University 1-3-1 Kagamiyama Higashi-Hiroshima 739-8526 Japan
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2
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Bateman CM, Beal H, Barker JE, Thompson BL, Donovan D, Grant BJ, Shooter J, Arakawa JH, Johnson S, Allen CJ, Yates JL, Kato R, Tinsley CWK, Zakharov LN, Abbey ER. One-Step Conversion of Potassium Organotrifluoroborates to Metal Organoborohydrides. Org Lett 2018; 20:3784-3787. [PMID: 29944380 DOI: 10.1021/acs.orglett.8b01373] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This letter describes the one-step conversion of heteroatom-substituted potassium organotrifluoroborates (KRBF3) to metal monoorganoborohydrides (MRBH3) using alkali metal aluminum hydrides. The method tolerates a variety of functional groups, expanding MRBH3 diversity. Hydride removal with Me3SiCl in the presence of dimethylaminopyridine (DMAP) affords the organoborane·DMAP (RBH2·DMAP) adducts.
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Affiliation(s)
- Christopher M Bateman
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Hailey Beal
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Joshua E Barker
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Brena L Thompson
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Drake Donovan
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Bradley J Grant
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Jesse Shooter
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Jordan H Arakawa
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Spencer Johnson
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Caleb J Allen
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - James L Yates
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Ryota Kato
- Department of Chemistry for Materials , Mie University , Tsu , Mie 514-8507 , Japan
| | - Colby W K Tinsley
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
| | - Lev N Zakharov
- Department of Chemistry and Biochemistry, CAMCOR , University of Oregon , Eugene , Oregon 97403 , United States
| | - Eric R Abbey
- Department of Chemistry, Biochemistry, & Physics , Eastern Washington University , Cheney , Washington 99004 , United States
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3
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Shooter J, Allen CJ, Tinsley CWK, Zakharov LN, Abbey ER. Crystal structure and Hirshfield analysis of the 4-(di-methyl-amino)-pyridine adduct of 4-meth-oxy-phenyl-borane. Acta Crystallogr E Crystallogr Commun 2017; 73:1747-1750. [PMID: 29152365 PMCID: PMC5683505 DOI: 10.1107/s2056989017015171] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2017] [Accepted: 10/17/2017] [Indexed: 11/24/2022]
Abstract
The title compound [systematic name: 4-(di-methyl-amino)-pyridine-4-meth-oxy-phenyl-borane (1/1)], C14H19BN2O, contains two independent mol-ecules in the asymmetric unit. Both molecules exhibit coplanar, mostly sp2-hybridized meth-oxy and di-methyl-amino substituents on their respective aromatic rings, consistent with π-donation into the aromatic systems. The B-H groups exhibit an intra-molecular close contact with a C-H group of the pyridine ring, which may be evidence of electrostatic attraction between the hydridic B-H and the electropositive aromatic C-H. There appears to be weak C-H⋯π(arene) inter-actions between two of the H atoms of an amino-methyl group and the meth-oxy-substituted benzene ring of the other independent mol-ecule, and another C-H⋯π (arene) inter-action between one of the pyridine ring H atoms and the same benzene ring.
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Affiliation(s)
- Jesse Shooter
- Department of Chemistry, Biochemistry, and Physics, Eastern Washington, University, Cheney, WA 99004, USA
| | - Caleb J. Allen
- Department of Chemistry, Biochemistry, and Physics, Eastern Washington, University, Cheney, WA 99004, USA
| | - Colby W. K. Tinsley
- Department of Chemistry, Biochemistry, and Physics, Eastern Washington, University, Cheney, WA 99004, USA
| | - Lev N. Zakharov
- Department of Chemistry and Biochemistry, CAMCOR, University of Oregon, Eugene, OR 97403, USA
| | - Eric R. Abbey
- Department of Chemistry, Biochemistry, and Physics, Eastern Washington, University, Cheney, WA 99004, USA
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4
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Légaré Lavergne J, Jayaraman A, Misal Castro LC, Rochette É, Fontaine FG. Metal-Free Borylation of Heteroarenes Using Ambiphilic Aminoboranes: On the Importance of Sterics in Frustrated Lewis Pair C-H Bond Activation. J Am Chem Soc 2017; 139:14714-14723. [PMID: 28901757 DOI: 10.1021/jacs.7b08143] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Two novel frustrated Lewis pair (FLP) aminoboranes, (1-Pip-2-BH2-C6H4)2 (2; Pip = piperidyl) and (1-NEt2-2-BH2-C6H4)2 (3; NEt2 = diethylamino), were synthesized, and their structural features were elucidated both in solution and in the solid state. The reactivity of these species for the borylation of heteroarenes was investigated and compared to previously reported (1-TMP-2-BH2-C6H4)2 (1; TMP = tetramethylpiperidyl) and (1-NMe2-2-BH2-C6H4)2 (4; NMe2 = dimethylamino). It was shown that 2 and 3 are more active catalysts for the borylation of heteroarenes than the bulkier analogue 1. Kinetic studies and density functional theory calculations were performed with 1 and 2 to ascertain the influence of the amino group of this FLP-catalyzed transformation. The C-H activation step was found to be more facile with smaller amines at the expense of a more difficult dissociation of the dimeric species. The bench-stable fluoroborate salts of all catalysts (1F-4F) have been synthesized and tested for the borylation reaction. The new precatalysts 2F and 3F are showing higher reaction rates and yields for multigram-scale syntheses.
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Affiliation(s)
- Julien Légaré Lavergne
- Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec City, Québec G1V 0A6, Canada
| | - Arumugam Jayaraman
- Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec City, Québec G1V 0A6, Canada
| | - Luis C Misal Castro
- Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec City, Québec G1V 0A6, Canada
| | - Étienne Rochette
- Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec City, Québec G1V 0A6, Canada
| | - Frédéric-Georges Fontaine
- Département de Chimie, Université Laval , 1045 Avenue de la Médecine, Québec City, Québec G1V 0A6, Canada
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5
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Rochette É, Courtemanche MA, Fontaine FG. Frustrated Lewis Pair Mediated Csp3−H Activation. Chemistry 2017; 23:3567-3571. [DOI: 10.1002/chem.201700390] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/26/2017] [Indexed: 01/12/2023]
Affiliation(s)
- Étienne Rochette
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec G1V 0A6 Québec Canada
| | - Marc-André Courtemanche
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec G1V 0A6 Québec Canada
| | - Frédéric-Georges Fontaine
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec G1V 0A6 Québec Canada
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6
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Shoji Y, Ikabata Y, Wang Q, Nemoto D, Sakamoto A, Tanaka N, Seino J, Nakai H, Fukushima T. Unveiling a New Aspect of Simple Arylboronic Esters: Long-Lived Room-Temperature Phosphorescence from Heavy-Atom-Free Molecules. J Am Chem Soc 2017; 139:2728-2733. [PMID: 28135418 DOI: 10.1021/jacs.6b11984] [Citation(s) in RCA: 164] [Impact Index Per Article: 23.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Arylboronic esters can be used as versatile reagents in organic synthesis, as represented by Suzuki-Miyaura cross-coupling. Here we report a serendipitous finding that simple arylboronic esters are phosphorescent in the solid state at room temperature with a lifetime on the order of several seconds. The phosphorescence properties of arylboronic esters are remarkable in light of the general notion that phosphorescent organic molecules require heavy atoms and/or carbonyl groups for the efficient generation of a triplet excited state. Theoretical calculations on phenylboronic acid pinacol ester indicated that this molecule undergoes an out-of-plane distortion at the (pinacol)B-Cipso moiety in the T1 excited state, which is responsible for its phosphorescence. A compound survey with 19 arylboron compounds suggested that the phosphorescence properties might be determined by solid-state molecular packing rather than by the patterns and numbers of boron substituents on the aryl units. The present finding may update the general notion of phosphorescent organic molecules.
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Affiliation(s)
- Yoshiaki Shoji
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | | | - Qi Wang
- CREST, Japan Science and Technology Agency , Kawaguchi, Saitama 332-0012, Japan
| | - Daisuke Nemoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Atsushi Sakamoto
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Naoki Tanaka
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
| | - Junji Seino
- CREST, Japan Science and Technology Agency , Kawaguchi, Saitama 332-0012, Japan
| | - Hiromi Nakai
- CREST, Japan Science and Technology Agency , Kawaguchi, Saitama 332-0012, Japan.,Elements Strategy Initiative for Catalysts and Batteries (ESICB), Kyoto University , Saikyo-ku, Kyoto 615-8245, Japan
| | - Takanori Fukushima
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology , 4259 Nagatsuta, Midori-ku, Yokohama 226-8503, Japan
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7
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Kuno S, Kanamori T, Yijing Z, Ohtani H, Yuasa H. Long Persistent Phosphorescence of Crystalline Phenylboronic Acid Derivatives: Photophysics and a Mechanistic Study. CHEMPHOTOCHEM 2017. [DOI: 10.1002/cptc.201600031] [Citation(s) in RCA: 51] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Shinichi Kuno
- School of Life Science and Technology; Tokyo Institute of Technology; J2-10 4259 Nagatsutacho, Midoriku Yokohama 226-8501 Japan
| | - Takashi Kanamori
- School of Life Science and Technology; Tokyo Institute of Technology; J2-10 4259 Nagatsutacho, Midoriku Yokohama 226-8501 Japan
| | - Zhao Yijing
- School of Life Science and Technology; Tokyo Institute of Technology; J2-10 4259 Nagatsutacho, Midoriku Yokohama 226-8501 Japan
| | - Hiroyuki Ohtani
- School of Life Science and Technology; Tokyo Institute of Technology; J2-10 4259 Nagatsutacho, Midoriku Yokohama 226-8501 Japan
| | - Hideya Yuasa
- School of Life Science and Technology; Tokyo Institute of Technology; J2-10 4259 Nagatsutacho, Midoriku Yokohama 226-8501 Japan
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8
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Murosaki T, Kaneda S, Maruhashi R, Sadamori K, Shoji Y, Tamao K, Hashizume D, Hayakawa N, Matsuo T. Synthesis and Structural Characteristics of Discrete Organoboron and Organoaluminum Hydrides Incorporating Bulky Eind Groups. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00633] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takahiro Murosaki
- Department
of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Shohei Kaneda
- Department
of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Ryota Maruhashi
- Department
of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Kazuya Sadamori
- Department
of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Yoshiaki Shoji
- Functional
Elemento-Organic Chemistry Unit, RIKEN Advanced Science Institute (ASI), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kohei Tamao
- Functional
Elemento-Organic Chemistry Unit, RIKEN Advanced Science Institute (ASI), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Daisuke Hashizume
- Materials
Characterization Support Unit, RIKEN Center for Emergent Matter Science (CEMS), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Naoki Hayakawa
- Department
of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
| | - Tsukasa Matsuo
- Department
of Applied Chemistry, Faculty of Science and Engineering, Kindai University, 3-4-1 Kowakae, Higashi-Osaka, Osaka 577-8502, Japan
- Functional
Elemento-Organic Chemistry Unit, RIKEN Advanced Science Institute (ASI), 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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9
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Rochette É, Bouchard N, Légaré Lavergne J, Matta CF, Fontaine FG. Spontaneous Reduction of a Hydroborane To Generate a B−B Single Bond by the Use of a Lewis Pair. Angew Chem Int Ed Engl 2016; 55:12722-6. [DOI: 10.1002/anie.201605645] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2016] [Indexed: 12/31/2022]
Affiliation(s)
- Étienne Rochette
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec Québec G1V 0A6 Canada
| | - Nicolas Bouchard
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec Québec G1V 0A6 Canada
| | - Julien Légaré Lavergne
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec Québec G1V 0A6 Canada
| | - Chérif F. Matta
- Department of Chemistry and Physics; Mount Saint Vincent University; 166 Bedford Highway Halifax Nova Scotia B3M 2J6 Canada
| | - Frédéric-Georges Fontaine
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec Québec G1V 0A6 Canada
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10
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Rochette É, Bouchard N, Légaré Lavergne J, Matta CF, Fontaine FG. Spontaneous Reduction of a Hydroborane To Generate a B−B Single Bond by the Use of a Lewis Pair. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201605645] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Étienne Rochette
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec Québec G1V 0A6 Canada
| | - Nicolas Bouchard
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec Québec G1V 0A6 Canada
| | - Julien Légaré Lavergne
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec Québec G1V 0A6 Canada
| | - Chérif F. Matta
- Department of Chemistry and Physics; Mount Saint Vincent University; 166 Bedford Highway Halifax Nova Scotia B3M 2J6 Canada
| | - Frédéric-Georges Fontaine
- Département de Chimie, Centre de Catalyse et Chimie Verte (C3V); Université Laval; 1045 Avenue de la Médecine Québec Québec G1V 0A6 Canada
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11
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Franz D, Inoue S. Advances in the development of complexes that contain a group 13 element chalcogen multiple bond. Dalton Trans 2016; 45:9385-97. [DOI: 10.1039/c6dt01413e] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The advances in the synthesis and isolation of complexes that contain a group 13 element chalcogen multiple bond are accounted for.
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Affiliation(s)
- Daniel Franz
- Institut für Siliciumchemie and Catalysis Research Center
- Technische Universität München
- 85748 Garching
- Germany
| | - Shigeyoshi Inoue
- Institut für Siliciumchemie and Catalysis Research Center
- Technische Universität München
- 85748 Garching
- Germany
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12
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Lu Z, Schweighauser L, Hausmann H, Wegner HA. Metal‐Free Ammonia–Borane Dehydrogenation Catalyzed by a Bis(borane) Lewis Acid. Angew Chem Int Ed Engl 2015; 54:15556-9. [DOI: 10.1002/anie.201508360] [Citation(s) in RCA: 69] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2015] [Indexed: 11/06/2022]
Affiliation(s)
- Zhenpin Lu
- Institut für Organische Chemie, Justus‐Liebig‐Universität Giessen, Heinrich‐Buff‐Ring 17, 35392 Gießen (Germany)
| | - Luca Schweighauser
- Institut für Organische Chemie, Justus‐Liebig‐Universität Giessen, Heinrich‐Buff‐Ring 17, 35392 Gießen (Germany)
| | - Heike Hausmann
- Institut für Organische Chemie, Justus‐Liebig‐Universität Giessen, Heinrich‐Buff‐Ring 17, 35392 Gießen (Germany)
| | - Hermann A. Wegner
- Institut für Organische Chemie, Justus‐Liebig‐Universität Giessen, Heinrich‐Buff‐Ring 17, 35392 Gießen (Germany)
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13
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Lu Z, Schweighauser L, Hausmann H, Wegner HA. Metallfreie Amminboran-Dehydrierung katalysiert durch eine Dibor-Lewis-Säure. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201508360] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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14
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Pospiech S, Bolte M, Lerner HW, Wagner M. Diborylated magnesium anthracene as precursor for B2H5(-)-bridged 9,10-dihydroanthracene. Chemistry 2015; 21:8229-36. [PMID: 25892077 DOI: 10.1002/chem.201500541] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2015] [Indexed: 11/10/2022]
Abstract
9,10-(Bpin)2-anthracene (3, HBpin = pinacolborane) was synthesized from 9,10-dibromoanthracene in a stepwise lithiation/borylation sequence. The reaction of 3 with highly activated magnesium furnished the diborylated magnesium anthracene 4, which was quenched in situ with ethereal HCl to yield cis-9,10-(Bpin)2-DHA (cis-5, DHA = 9,10-dihydroanthracene). Compound cis-5, in turn, can be reduced with Li[AlH4] in THF to give its diborate Li2[cis-9,10-(BH3)2-DHA] (Li2 [cis-6]). In the crystal lattice, the THF solvate Li2[cis-6]⋅3 THF establishes a dimeric structure with Li-(μ-H)-B coordination modes. Hydride abstraction from Li2[cis-6] with Me3SiCl yields the B-H-B-bridged DHA Li[7]. This product can also be viewed as a unique cyclic B2H7(-) derivative with a hydrocarbon backbone. Treatment of Li2[cis-6] with the stronger hydride abstracting agent Me3SiOTf (HOTf = trifluoromethanesulfonic acid) in THF affords the THF diadduct of cis-9,10-(BH(OTf))2-DHA.
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Affiliation(s)
- Steffen Pospiech
- J. W. Goethe-Universität, Institut für Anorganische und Analytische Chemie, Max-von-Laue-Straße 7, 60438 Frankfurt (Main) (Germany), Fax: (+49) 69-798-29260
| | - Michael Bolte
- J. W. Goethe-Universität, Institut für Anorganische und Analytische Chemie, Max-von-Laue-Straße 7, 60438 Frankfurt (Main) (Germany), Fax: (+49) 69-798-29260
| | - Hans-Wolfram Lerner
- J. W. Goethe-Universität, Institut für Anorganische und Analytische Chemie, Max-von-Laue-Straße 7, 60438 Frankfurt (Main) (Germany), Fax: (+49) 69-798-29260
| | - Matthias Wagner
- J. W. Goethe-Universität, Institut für Anorganische und Analytische Chemie, Max-von-Laue-Straße 7, 60438 Frankfurt (Main) (Germany), Fax: (+49) 69-798-29260.
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15
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Mane MV, Rizvi MA, Vanka K. Computational study of metal free alcohol dehydrogenation employing frustrated lewis pairs. J Org Chem 2015; 80:2081-91. [PMID: 25615238 DOI: 10.1021/jo5023052] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The catalysis of acceptorless alcohol dehydrogenation (AAD) is an important area of research. Transition metal-based systems are known to be effective catalysts for this reaction, but developing metal free catalytic systems would lead to highly desirable cheaper and greener alternatives. With this in mind, this computational study investigates design strategies than can lead to metal free frustrated Lewis pairs (FLPs) that can be employed for AAD catalysis. A careful study of 36 different proposed FLP candidates reveals that several new FLPs can be designed from existing, experimentally synthesized FLPs that can rival or be even better than state-of-the-art transition metal-based systems in catalyzing the alcohol dehydrogenation process.
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Affiliation(s)
- Manoj V Mane
- Physical Chemistry Division, National Chemical Laboratory , Dr. Homi Bhabha Road, Pashan, Pune, Maharashtra 411 008, India
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Samigullin K, Bolte M, Lerner HW, Wagner M. Facile Synthesis of (3,5-(CF3)2C6H3)2BX (X = H, OMe, F, Cl, Br): Reagents for the Introduction of a Strong Boryl Acceptor Unit. Organometallics 2014. [DOI: 10.1021/om500476d] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kamil Samigullin
- Institut für Anorganische
und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse
7, D-60438 Frankfurt
(Main), Germany
| | - Michael Bolte
- Institut für Anorganische
und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse
7, D-60438 Frankfurt
(Main), Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische
und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse
7, D-60438 Frankfurt
(Main), Germany
| | - Matthias Wagner
- Institut für Anorganische
und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse
7, D-60438 Frankfurt
(Main), Germany
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17
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Franz D, Inoue S. Systematic Investigation of the Ring-Expansion Reaction of N-Heterocyclic Carbenes with an Iminoborane Dihydride. Chem Asian J 2014; 9:2083-7. [DOI: 10.1002/asia.201402233] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2014] [Indexed: 11/08/2022]
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18
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Breunig JM, Lehmann F, Bolte M, Lerner HW, Wagner M. Synthesis and Reactivity of o-Phosphane Oxide Substituted Aryl(hydro)borates and Aryl(hydro)boranes. Organometallics 2014. [DOI: 10.1021/om500385h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Jens Michael Breunig
- Institut
für Anorganische und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Felix Lehmann
- Institut
für Anorganische und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Michael Bolte
- Institut
für Anorganische und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Hans-Wolfram Lerner
- Institut
für Anorganische und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
| | - Matthias Wagner
- Institut
für Anorganische und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
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19
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Seven Ö, Bolte M, Lerner HW, Wagner M. High-Yield Syntheses and Reactivity Studies of 1,2-Diborylated and 1,2,4,5-Tetraborylated Benzenes. Organometallics 2014. [DOI: 10.1021/om500104w] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Ömer Seven
- Institut für Anorganische
und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse
7, D-60438 Frankfurt (Main), Germany
| | - Michael Bolte
- Institut für Anorganische
und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse
7, D-60438 Frankfurt (Main), Germany
| | - Hans-Wolfram Lerner
- Institut für Anorganische
und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse
7, D-60438 Frankfurt (Main), Germany
| | - Matthias Wagner
- Institut für Anorganische
und Analytische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse
7, D-60438 Frankfurt (Main), Germany
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20
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Molitor S, Gessner VH. Reactivity of Stabilized Li/Cl Carbenoids towards Lewis Base Adducts of BH3: BH Bond Activation versus Carbene Dimerization. Chemistry 2013; 19:11858-62. [DOI: 10.1002/chem.201302612] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/16/2013] [Revised: 07/05/2013] [Indexed: 11/08/2022]
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21
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Burford RJ, Geier MJ, Vogels CM, Decken A, Westcott SA. Addition of boranes to iminophosphines: Synthesis and reactivity of a new bulky hydroboration reagent. J Organomet Chem 2013. [DOI: 10.1016/j.jorganchem.2013.02.003] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Reichert A, Bolte M, Lerner HW, Wagner M. Ferrocenyl(trihydro)borates: building blocks for the synthesis of heterooligonuclear metallocene complexes. Dalton Trans 2013; 42:688-94. [PMID: 22992660 DOI: 10.1039/c2dt31732j] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Adelina Reichert
- Institut für Anorganische Chemie, J. W. Goethe-Universität Frankfurt, Max-von-Laue-Strasse 7, D-60438 Frankfurt (Main), Germany
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23
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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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Seven Ö, Qu ZW, Zhu H, Bolte M, Lerner HW, Holthausen MC, Wagner M. Synthesis, Coupling, and Condensation Reactions of 1,2-Diborylated Benzenes: An Experimental and Quantum-Chemical Study. Chemistry 2012; 18:11284-95. [DOI: 10.1002/chem.201201547] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2012] [Indexed: 11/06/2022]
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25
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Lorbach A, Hübner A, Wagner M. Aryl(hydro)boranes: versatile building blocks for boron-doped π-electron materials. Dalton Trans 2012; 41:6048-63. [DOI: 10.1039/c2dt30118k] [Citation(s) in RCA: 190] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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26
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27
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Franz D, Haghiri Ilkhechi A, Bolte M, Lerner H, Wagner M. A Quest for Ligand‐Unsupported Li
+
–π Interactions in Mono‐, Di‐, and Tritopic Lithium Arylborates. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100824] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Daniel Franz
- Institut für Anorganische Chemie, J. W. Goethe‐Universität Frankfurt, Max‐von‐Laue‐Strasse 7, 60438 Frankfurt (Main), Germany, Fax: +49‐69‐798‐29260
| | - Alireza Haghiri Ilkhechi
- Institut für Anorganische Chemie, J. W. Goethe‐Universität Frankfurt, Max‐von‐Laue‐Strasse 7, 60438 Frankfurt (Main), Germany, Fax: +49‐69‐798‐29260
| | - Michael Bolte
- Institut für Anorganische Chemie, J. W. Goethe‐Universität Frankfurt, Max‐von‐Laue‐Strasse 7, 60438 Frankfurt (Main), Germany, Fax: +49‐69‐798‐29260
| | - Hans‐Wolfram Lerner
- Institut für Anorganische Chemie, J. W. Goethe‐Universität Frankfurt, Max‐von‐Laue‐Strasse 7, 60438 Frankfurt (Main), Germany, Fax: +49‐69‐798‐29260
| | - Matthias Wagner
- Institut für Anorganische Chemie, J. W. Goethe‐Universität Frankfurt, Max‐von‐Laue‐Strasse 7, 60438 Frankfurt (Main), Germany, Fax: +49‐69‐798‐29260
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28
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Das A, Hübner A, Weber M, Bolte M, Lerner HW, Wagner M. 9-H-9-Borafluorene dimethyl sulfide adduct: a product of a unique ring-contraction reaction and a useful hydroboration reagent. Chem Commun (Camb) 2011; 47:11339-41. [DOI: 10.1039/c1cc14888e] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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