1
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Baird SR, Vogels CM, Geier SJ, Watanabe LK, Binder JF, Macdonald CLB, Westcott SA. The phosphinoboration of thiosemicarbazones. CAN J CHEM 2022. [DOI: 10.1139/cjc-2022-0088] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This study reports on the exploration of the phosphinoboration reaction with several thiosemicarbazones (R5R4NC(S)NR3N=CR1R2). Reactions between either Ph2PBpin (pin = 1,2-O2C2Me4) or Ph2PBcat (cat = 1,2-O2C6H4) with thiosemicarbazones containing a terminal primary or secondary amine afforded boron-containing heterocyclic 1,3,4-thiadiazoline products in excellent yield. The addition of Ph2PBpin to thiosemicarbazones containing an NMe2 group in the terminal position generated novel five-membered heterocycles in moderate yield, which included boron, sulfur, and nitrogen atoms. Heterocyclization of the thiosemicarbazones occurs preferentially in the presence of functional groups such as acetyl and pyridyl groups.
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Affiliation(s)
- Samuel R. Baird
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Stephen J. Geier
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Lara K. Watanabe
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada
| | - Justin F. Binder
- Department of Chemistry and Biochemistry, University of Windsor, Windsor, ON N9B 3P4, Canada
| | | | - Stephen A. Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
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2
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Hamdaoui M, Liu F, Cornaton Y, Lu X, Shi X, Zhang H, Liu J, Spingler B, Djukic JP, Duttwyler S. An Iridium-Stabilized Borenium Intermediate. J Am Chem Soc 2022; 144:18359-18374. [PMID: 36173688 DOI: 10.1021/jacs.2c06298] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Exploration of new organometallic systems based on polyhedral boron clusters has the potential to solve challenging chemical problems such as the stabilization of reactive intermediates and transition-state-like species postulated for E-H (E = H, B, C, Si) bond activation reactions. We report on facile and clean B-H activation of a hydroborane by a new iridium boron cluster complex. The product of this reaction is an unprecedented and fully characterized transition metal-stabilized boron cation or borenium. Moreover, this intermediate bears an unusual intramolecular B···H interaction between the hydrogen originating from the activated hydroborane and the cyclometallated metal-bonded boron atom of the boron cluster. This B···H interaction is proposed to be an arrested insertion of hydrogen into the Bcage-metal bond and the initiation step for iridium "cage-walking" around the upper surface of the boron cluster. The "cage-walking" process is supported by the hydrogen-deuterium exchange observed at the boron cluster, and a mechanism is proposed on the basis of theoretical methods with a special focus on the role of noncovalent interactions. All new compounds were isolated and fully characterized by NMR spectroscopy and elemental analysis. Key compounds were studied by single crystal X-ray diffraction and X-ray photoelectron spectroscopy.
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Affiliation(s)
- Mustapha Hamdaoui
- Department of Chemistry, Zheijang University, Hangzhou 310027, China
| | - Fan Liu
- Department of Chemistry, Zheijang University, Hangzhou 310027, China
| | - Yann Cornaton
- Laboratoire de Chimie et Systémique Organométalliques, Institut de Chimie de Strasbourg UMR 7177 CNRS, Université de Strasbourg, Strasbourg 67000, France
| | - Xingyu Lu
- Instrumentation Service Center for Molecular Sciences, Westlake University, Hangzhou 310024, China
| | - Xiaohuo Shi
- Instrumentation Service Center for Molecular Sciences, Westlake University, Hangzhou 310024, China
| | - Huan Zhang
- Instrumentation Service Center for Molecular Sciences, Westlake University, Hangzhou 310024, China
| | - Jiyong Liu
- Department of Chemistry, Zheijang University, Hangzhou 310027, China
| | - Bernhard Spingler
- Department of Chemistry, University of Zurich, Zurich 8057, Switzerland
| | - Jean-Pierre Djukic
- Laboratoire de Chimie et Systémique Organométalliques, Institut de Chimie de Strasbourg UMR 7177 CNRS, Université de Strasbourg, Strasbourg 67000, France
| | - Simon Duttwyler
- Department of Chemistry, Zheijang University, Hangzhou 310027, China
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3
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Jeong E, Heo J, Jin S, Kim D, Chang S. KO tBu-Catalyzed 1,2-Silaboration of N-Heteroarenes to Access 2-Silylheterocycles: A Cooperative Model for the Regioselectivity. ACS Catal 2022. [DOI: 10.1021/acscatal.2c01126] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Eunchan Jeong
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Joon Heo
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Seongho Jin
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Dongwook Kim
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
| | - Sukbok Chang
- Department of Chemistry, Korea Advanced Institute of Science and Technology (KAIST), Daejeon 34141, Korea
- Center for Catalytic Hydrocarbon Functionalization, Institute for Basic Science (IBS), Daejeon 34141, Korea
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4
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Ordyszewska A, Szynkiewicz N, Chojnacki J, Grubba R. Monomeric Triphosphinoboranes: Intramolecular Lewis Acid–Base Interactions between Boron and Phosphorus Atoms. Inorg Chem 2022; 61:4361-4370. [PMID: 35220712 PMCID: PMC8924927 DOI: 10.1021/acs.inorgchem.1c03618] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
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Herein, we present
the synthesis of the first fully characterized
monomeric triphosphinoboranes. The simple reaction of boron tribromide
with 3 equiv of bulky lithium phosphide tBu2PLi yielded triphosphinoborane (tBu2P)3B. Triphosphinoboranes with diversified phosphanyl substituents
were obtained via a two-step reaction, in which isolable bromodiphosphinoborane
(tBu2P)2BBr is first formed
and then reacts with 1 equiv of less bulky phosphide R2PLi (R2P = Cy2P, iPr2P, tBuPhP, or Ph2P). By utilizing this
method, we obtained a series of triphosphinoboranes with the general
formula (tBu2P)2BPR2. On the basis of structural and theoretical studies, two main types
of triphosphinoborane structures can be distinguished. In the first
type, all three electron lone pairs interact with the formally empty
p orbital of the central boron atom, resulting in delocalized π
bonding, whereas in the second type, one localized P=B bond
and two P–B bonds are observed. The Lewis acidic–basic
properties of triphosphinoboranes during the reaction of (tBu2P)2BPiPr2 with H3B·SMe2 were analyzed. The
P–B bond-containing compound mentioned above not only formed
an adduct with BH3 but also activated the B–H bond
of the borane molecule, resulting in the incorporation of the BH2 unit into two phosphorus atoms and migration of a hydride
to the boron atom of the parent triphosphinoborane. The structures
of the triphosphinoboranes were confirmed by single-crystal X-ray
analysis, multinuclear nuclear magnetic resonance spectroscopy, and
elemental analysis. The synthesis
and structural analysis of the first fully
characterized monomeric triphosphinoboranes are presented.
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Affiliation(s)
- Anna Ordyszewska
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Gabriela Narutowicza Strasse, 80-233 Gdańsk, Poland
| | - Natalia Szynkiewicz
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Gabriela Narutowicza Strasse, 80-233 Gdańsk, Poland
| | - Jarosław Chojnacki
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Gabriela Narutowicza Strasse, 80-233 Gdańsk, Poland
| | - Rafał Grubba
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of Technology, 11/12 Gabriela Narutowicza Strasse, 80-233 Gdańsk, Poland
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5
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Kano N, O'Brien NJ, Aoki K, Matsuda Y, Morofuji T. Synthesis and structure of a phosphinoboronic ester in a fused bicyclic framework. Dalton Trans 2021; 50:16003-16012. [PMID: 34734937 DOI: 10.1039/d1dt02646a] [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
The first phosphinoboronic ester bearing a fused bicyclic framework was synthesised by either deprotonation and hydride abstraction or Rh-catalysed dehydrogenation of a hydrophosphineboronic ester. The phosphinoboronic ester reacted as a Lewis acid with KF/18-crown-6, pyridine and DMAP to give the corresponding adducts. Furthermore, its crystal structure shows a remarkably short P-B bond in comparison with other P-B bonded derivatives in spite of the trigonal pyramidal geometry of the phosphorus. Consistent with the phosphorus pyramidality, the π-type donor-acceptor interaction of the P-B bond is small as revealed by the DFT calculations. The P-B bond shared within the fused six-membered rings has to shorten because of the geometrical requirement and high s-character of the boron.
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Affiliation(s)
- Naokazu Kano
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro 1-5-1, Toshima-ku, Tokyo, 171-8588, Japan.
| | - Nathan J O'Brien
- Department of Chemistry, Graduate School of Science, The University of Tokyo, Hongo 7-3-1, Bunkyo-ku, Tokyo, 113-0033, Japan
| | - Kosuke Aoki
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro 1-5-1, Toshima-ku, Tokyo, 171-8588, Japan.
| | - Yui Matsuda
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro 1-5-1, Toshima-ku, Tokyo, 171-8588, Japan.
| | - Tatsuya Morofuji
- Department of Chemistry, Faculty of Science, Gakushuin University, Mejiro 1-5-1, Toshima-ku, Tokyo, 171-8588, Japan.
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6
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Bose SK, Mao L, Kuehn L, Radius U, Nekvinda J, Santos WL, Westcott SA, Steel PG, Marder TB. First-Row d-Block Element-Catalyzed Carbon-Boron Bond Formation and Related Processes. Chem Rev 2021; 121:13238-13341. [PMID: 34618418 DOI: 10.1021/acs.chemrev.1c00255] [Citation(s) in RCA: 96] [Impact Index Per Article: 32.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Organoboron reagents represent a unique class of compounds because of their utility in modern synthetic organic chemistry, often affording unprecedented reactivity. The transformation of the carbon-boron bond into a carbon-X (X = C, N, and O) bond in a stereocontrolled fashion has become invaluable in medicinal chemistry, agrochemistry, and natural products chemistry as well as materials science. Over the past decade, first-row d-block transition metals have become increasingly widely used as catalysts for the formation of a carbon-boron bond, a transformation traditionally catalyzed by expensive precious metals. This recent focus on alternative transition metals has enabled growth in fundamental methods in organoboron chemistry. This review surveys the current state-of-the-art in the use of first-row d-block element-based catalysts for the formation of carbon-boron bonds.
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Affiliation(s)
- Shubhankar Kumar Bose
- Centre for Nano and Material Sciences (CNMS), Jain University, Jain Global Campus, Bangalore-562112, India
| | - Lujia Mao
- Key Laboratory of Tropical Translational Medicine of Ministry of Education, Hainan Key Laboratory for Research and Development of Tropical Herbs, School of Pharmacy, Hainan Medical University, 571199 Haikou, Hainan, P. R. China
| | - Laura Kuehn
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Udo Radius
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Jan Nekvinda
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Webster L Santos
- Department of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Stephen A Westcott
- Department of Chemistry and Biochemistry, Mount Allison University, Sackville, NB E4L 1G8, Canada
| | - Patrick G Steel
- Department of Chemistry, University of Durham, Science Laboratories South Road, Durham DH1 3LE, U.K
| | - Todd B Marder
- Institute of Inorganic Chemistry and Institute for Sustainable Chemistry & Catalysis with Boron, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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7
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Mi J, Huo S, Meng L, Li X. Mechanism and regioselectivity of [Cu-Fe] heterobimetallic-catalyzed hydroboration of pyridines: DFT investigation. MOLECULAR CATALYSIS 2021. [DOI: 10.1016/j.mcat.2021.111722] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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8
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Szynkiewicz N, Ordyszewska A, Chojnacki J, Grubba R. Diphosphinoboranes as Intramolecular Frustrated Lewis Pairs: P-B-P Bond Systems for the Activation of Dihydrogen, Carbon Dioxide, and Phenyl Isocyanate. Inorg Chem 2021; 60:3794-3806. [PMID: 33657801 PMCID: PMC8041279 DOI: 10.1021/acs.inorgchem.0c03563] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2020] [Indexed: 12/20/2022]
Abstract
Herein, we present the first example of the activation of small molecules by P-B-P bond systems. The reactivity study involves reactions of two selected diphosphinoboranes, (t-Bu2P)2BPh (1') and (Cy2P)2BNiPr2 (2), that differ in terms of their structural and electronic properties for the activation of dihydrogen, carbon dioxide, and phenyl isocyanate. Diphosphinoborane 1' activates H2 under very mild conditions in the absence of a catalyst with the formation of the dimer (t-Bu2PB(Ph)H)2 and t-Bu2PH. Conversely, diphosphinoborane 2 did not react with H2 under the same conditions. The reaction of 1' with CO2 led to the formation of a compound with an unusual structure, where two phosphinoformate units were coordinated to the PhBOBPh moiety. In addition, 2 reacted with CO2 to insert two CO2 molecules into the P-B bonds of the parent diphosphinoborane. Both diphosphinoboranes activated PhNCO, yielding products resulting from the addition of two and/or three PhNCO molecules and the formation of new P-C, B-O, B-N, and C-N bonds. The products of the activation of small molecules by diphosphinoboranes were characterized with nuclear magnetic resonance (NMR) and infrared (IR) spectroscopy, single-crystal X-ray diffraction, and elemental analysis. Additionally, the reaction mechanisms of the activation of small molecules by diphosphinoboranes were elucidated by theoretical methods.
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Affiliation(s)
- Natalia Szynkiewicz
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of
Technology, 11/12 Gabriela Narutowicza Str. 80-233 Gdańsk, Poland
| | - Anna Ordyszewska
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of
Technology, 11/12 Gabriela Narutowicza Str. 80-233 Gdańsk, Poland
| | - Jarosław Chojnacki
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of
Technology, 11/12 Gabriela Narutowicza Str. 80-233 Gdańsk, Poland
| | - Rafał Grubba
- Department of Inorganic Chemistry, Faculty of Chemistry, Gdańsk University of
Technology, 11/12 Gabriela Narutowicza Str. 80-233 Gdańsk, Poland
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9
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Maar RR, Katzman BD, Boyle PD, Staroverov VN, Gilroy JB. Cationic Boron Formazanate Dyes**. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202015036] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ryan R. Maar
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario 1151 Richmond Street North London Ontario N6A 5B7 Canada
| | - Benjamin D. Katzman
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario 1151 Richmond Street North London Ontario N6A 5B7 Canada
| | - Paul D. Boyle
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario 1151 Richmond Street North London Ontario N6A 5B7 Canada
| | - Viktor N. Staroverov
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario 1151 Richmond Street North London Ontario N6A 5B7 Canada
| | - Joe B. Gilroy
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR) The University of Western Ontario 1151 Richmond Street North London Ontario N6A 5B7 Canada
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10
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Maar RR, Katzman BD, Boyle PD, Staroverov VN, Gilroy JB. Cationic Boron Formazanate Dyes*. Angew Chem Int Ed Engl 2021; 60:5152-5156. [PMID: 33217138 DOI: 10.1002/anie.202015036] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2020] [Indexed: 12/12/2022]
Abstract
Incorporation of cationic boron atoms into molecular frameworks is an established strategy for creating chemical species with unusual bonding and reactivity but is rarely thought of as a way of enhancing molecular optoelectronic properties. Using boron formazanate dyes as examples, we demonstrate that the wavelengths, intensities, and type of the first electronic transitions in BN heterocycles can be modulated by varying the charge, coordination number, and supporting ligands at the cationic boron atom. UV-vis absorption spectroscopy measurements and density-functional (DFT) calculations show that these modulations are caused by changes in the geometry and extent of π-conjugation of the boron formazanate ring. These findings suggest a new strategy for designing optoelectronic materials based on π-conjugated heterocycles containing boron and other main-group elements.
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Affiliation(s)
- Ryan R Maar
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond Street North, London, Ontario, N6A 5B7, Canada
| | - Benjamin D Katzman
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond Street North, London, Ontario, N6A 5B7, Canada
| | - Paul D Boyle
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond Street North, London, Ontario, N6A 5B7, Canada
| | - Viktor N Staroverov
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond Street North, London, Ontario, N6A 5B7, Canada
| | - Joe B Gilroy
- Department of Chemistry and The Centre for Advanced Materials and Biomaterials Research (CAMBR), The University of Western Ontario, 1151 Richmond Street North, London, Ontario, N6A 5B7, Canada
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11
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Dilchert K, Scherpf T, Gessner VH. Carbenoid‐Mediated Formation and Activation of Element‐Element and Element–Hydrogen Bonds. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000860] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Katharina Dilchert
- Chair of Inorganic Chemistry II Faculty of Chemistry and Biochemistry Ruhr‐University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Thorsten Scherpf
- Chair of Inorganic Chemistry II Faculty of Chemistry and Biochemistry Ruhr‐University Bochum Universitätsstraße 150 44801 Bochum Germany
| | - Viktoria H. Gessner
- Chair of Inorganic Chemistry II Faculty of Chemistry and Biochemistry Ruhr‐University Bochum Universitätsstraße 150 44801 Bochum Germany
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12
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Lipshultz JM, Fu Y, Liu P, Radosevich AT. Organophosphorus-catalyzed relay oxidation of H-Bpin: electrophilic C-H borylation of heteroarenes. Chem Sci 2020; 12:1031-1037. [PMID: 34163869 PMCID: PMC8179051 DOI: 10.1039/d0sc05620k] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A nontrigonal phosphorus triamide (1, P{N[o-NMe-C6H4]2}) is shown to catalyze C–H borylation of electron-rich heteroarenes with pinacolborane (HBpin) in the presence of a mild chloroalkane reagent. C–H borylation proceeds for a range of electron-rich heterocycles including pyrroles, indoles, and thiophenes of varied substitution. Mechanistic studies implicate an initial P–N cooperative activation of HBpin by 1 to give P-hydrido diazaphospholene 2, which is diverted by Atherton–Todd oxidation with chloroalkane to generate P-chloro diazaphospholene 3. DFT calculations suggest subsequent oxidation of pinacolborane by 3 generates chloropinacolborane (ClBpin) as a transient electrophilic borylating species, consistent with observed substituent effects and regiochemical outcomes. These results illustrate the targeted diversion of established reaction pathways in organophosphorus catalysis to enable a new mode of main group-catalyzed C–H borylation. A nontrigonal phosphorus triamide (1, P{N[o-NMe-C6H4]2}) is shown to catalyze C–H borylation of electron-rich heteroarenes with pinacolborane (HBpin) in the presence of a mild chloroalkane reagent.![]()
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Affiliation(s)
- Jeffrey M Lipshultz
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
| | - Yue Fu
- Department of Chemistry, University of Pittsburgh 219 Parkman Avenue Pittsburgh PA 15260 USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh 219 Parkman Avenue Pittsburgh PA 15260 USA
| | - Alexander T Radosevich
- Department of Chemistry, Massachusetts Institute of Technology 77 Massachusetts Avenue Cambridge MA 02139 USA
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13
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Yoshino J, Hirono Y, Akahane R, Higuchi H, Hayashi N. Effects of π-conjugation on the solid-state photoresponsive coloring behavior of bipyridine-boronium complexes. Photochem Photobiol Sci 2020; 19:1517-1521. [PMID: 33047774 DOI: 10.1039/d0pp00296h] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Solid-state photoinduced coloring of boronium complexes consisting of 9-borabicyclononane and 2,2'-bipyridine with π-conjugated substituents at the 4,4'- or 5,5'-positions was investigated. The substitution position affected the highest occupied molecular orbital distribution and determined the coloring capability. The 4,4'-substituted complexes exhibited coloration upon irradiation, whereas most of the 5,5'-substituted complexes did not.
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Affiliation(s)
- Junro Yoshino
- Faculty of Science, University of Toyama, 3190 Gofuku, Toyama, Toyama 930-8555, Japan. and Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama, Toyama 930-8555, Japan
| | - Yoshito Hirono
- Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama, Toyama 930-8555, Japan
| | - Ryota Akahane
- Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama, Toyama 930-8555, Japan
| | - Hiroyuki Higuchi
- Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama, Toyama 930-8555, Japan
| | - Naoto Hayashi
- Faculty of Science, University of Toyama, 3190 Gofuku, Toyama, Toyama 930-8555, Japan. and Department of Chemistry, Graduate School of Science and Engineering, University of Toyama, 3190 Gofuku, Toyama, Toyama 930-8555, Japan
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14
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Fritzemeier RG, Nekvinda J, Vogels CM, Rosenblum CA, Slebodnick C, Westcott SA, Santos WL. Organocatalytic
trans
Phosphinoboration of Internal Alkynes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006096] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
| | - Jan Nekvinda
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Carol Ann Rosenblum
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Carla Slebodnick
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Webster L. Santos
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
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15
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Fritzemeier RG, Nekvinda J, Vogels CM, Rosenblum CA, Slebodnick C, Westcott SA, Santos WL. Organocatalytic
trans
Phosphinoboration of Internal Alkynes. Angew Chem Int Ed Engl 2020; 59:14358-14362. [PMID: 32406101 DOI: 10.1002/anie.202006096] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2020] [Indexed: 01/10/2023]
Affiliation(s)
| | - Jan Nekvinda
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Christopher M. Vogels
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Carol Ann Rosenblum
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Carla Slebodnick
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry Mount Allison University 63C York Street Sackville New Brunswick E4L 1G8 Canada
| | - Webster L. Santos
- Department of Chemistry Virginia Tech 900 West Campus Drive Blacksburg VA 24061 USA
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16
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O'Brien NJ, Kano N, Havare N, Uematsu R, Ramozzi R, Morokuma K. Synthesis, Structure and Reactivities of Pentacoordinated Phosphorus–Boron Bonded Compounds. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000229] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Nathan J. O'Brien
- Department of Chemistry Graduate School of Science The University of Tokyo 7‐3‐1 Hongo, Bunkyo‐ku 113‐0033 Tokyo Japan
| | - Naokazu Kano
- Department of Chemistry Graduate School of Science The University of Tokyo 7‐3‐1 Hongo, Bunkyo‐ku 113‐0033 Tokyo Japan
| | - Nizam Havare
- Department of Chemistry Graduate School of Science The University of Tokyo 7‐3‐1 Hongo, Bunkyo‐ku 113‐0033 Tokyo Japan
| | - Ryohei Uematsu
- Fukui Institute for Fundamental Chemistry Kyoto University Takano‐Nishihiraki‐cho 34‐4, Sakyou‐ku 606‐8103 Kyoto Japan
| | - Romain Ramozzi
- Fukui Institute for Fundamental Chemistry Kyoto University Takano‐Nishihiraki‐cho 34‐4, Sakyou‐ku 606‐8103 Kyoto Japan
| | - Keiji Morokuma
- Fukui Institute for Fundamental Chemistry Kyoto University Takano‐Nishihiraki‐cho 34‐4, Sakyou‐ku 606‐8103 Kyoto Japan
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17
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Manankandayalage CP, Unruh DK, Krempner C. Boronic, diboronic and boric acid esters of 1,8-naphthalenediol - synthesis, structure and formation of boronium salts. Dalton Trans 2020; 49:4834-4842. [PMID: 32215427 DOI: 10.1039/d0dt00745e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The 1,8-naphthalenediolate [1,8-O2C10H8] supported boronic and boric acid esters of general formula X-B(1,8-O2C10H8), where X = C6H5 (1a), C6F5 (2a), 3,4,5-F3-C6H2 (3a), 2,4,6-F3-C6H2 (4a), 2,6-F2-C6H3 (5a), 2,6-Cl2-C6H3 (6a), 2,4,6-Me3-C6H2 (7a), 2,6-(MeO)3-C6H3 (8a), Bun (9a), MeO (10a), OH (11a) and Cl (13a), were synthesized, NMR spectroscopically characterized, and the solid-state structures of 1a-5a, 8a and 10a determined by X-ray crystallography. The acceptor numbers of 1a-7a and 13a were determined and found to be similar to their catecholate analogues, R-Bcat, indicating similar Lewis acidities of these two classes of boronic acid esters. The reaction of B2(NMe2)4 with 1,8-naphthalenediol, followed by addition of HCl furnished the diboronic acid ester B2(1,8-O2C10H8)4 (16a) in ca. 70% yield. Cl-B(1,8-O2C10H8) (13a) was shown to react with O[double bond, length as m-dash]PEt3, DMAP, 1,10-phenanthroline and 2,2'-bipyridine, resp., to give the boronium salts [(Et3P[double bond, length as m-dash]O)2B(1,8-O2C10H8)]Cl (18a), [(DMAP)2B(1,8-O2C10H8)]Cl (22a), [(2,2'-bipyridine)B(1,8-O2C10H8)]Cl (23a) and [(1,10-phenanthroline)B(1,8-O2C10H8)]Cl (24a), which were characterized by NMR spectroscopy and X-ray crystallography.
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Affiliation(s)
- Chamila P Manankandayalage
- Department of Chemistry and Biochemistry, Texas Tech University, Memorial Dr. & Boston, Lubbock, TX 79409, USA.
| | - Daniel K Unruh
- Department of Chemistry and Biochemistry, Texas Tech University, Memorial Dr. & Boston, Lubbock, TX 79409, USA.
| | - Clemens Krempner
- Department of Chemistry and Biochemistry, Texas Tech University, Memorial Dr. & Boston, Lubbock, TX 79409, USA.
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18
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Affiliation(s)
- Sehoon Park
- Department of ChemistryGuangdong Technion Israel Institute of Technology Guangdong 515063 P. R. China
- Technion-Israel Institute of Technology Technion City 32000 Haifa Israel
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19
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Beagan DM, Carta V, Caulton KG. A reagent for heteroatom borylation, including iron mediated reductive deoxygenation of nitrate yielding a dinitrosyl complex. Dalton Trans 2020; 49:1681-1687. [PMID: 31956885 DOI: 10.1039/d0dt00077a] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
4,4'-Bipyridyl is shown to be a catalyst for transfer of pinacolboryl groups from (Bpin)2 to nitrogen heterocycles and to Me3SiN3. Using stoichiometric (Bpin)2(pyrazine) or (Bpin)2(bipyridine) in an analogous manner, an aromatic nitro group is deoxygenated and subsequently borylated, and four-fold deoxygenation of (DIM)Fe(NO3)2(MeCN) to yield the dinitrosyl complex (DIM)Fe(NO)2 is facile. The co-product O(Bpin)2 is the quantitative fate of the removed oxo groups. With borylation of both nitrogen heterocycles and doubly deoxygenating two nitrates coordinated to a single metal center, broad spectrum methodology is demonstrated.
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Affiliation(s)
- Daniel M Beagan
- Indiana University, Department of Chemistry, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA.
| | - Veronica Carta
- Indiana University, Department of Chemistry, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA.
| | - Kenneth G Caulton
- Indiana University, Department of Chemistry, 800 E. Kirkwood Ave., Bloomington, IN 47401, USA.
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20
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Murphy MC, Trofimova A, LaFortune JHW, Vogels CM, Geier SJ, Binder JF, Macdonald CLB, Stephan DW, Westcott SA. The phosphinoboration of acyl chlorides. Dalton Trans 2020; 49:5092-5099. [DOI: 10.1039/d0dt00579g] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
This investigation examines the reactivity of phosphinoboronate esters Ph2PBpin (pin = 1,2-O2C2Me4) and Ph2PBcat (cat = 1,2-O2C6H4), as well as other phosphinoboron species, with various aryl and aliphatic acyl chlorides.
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Affiliation(s)
- Maia C. Murphy
- Department of Chemistry and Biochemistry
- Mount Allison University
- Sackville
- Canada
| | | | | | | | - Stephen J. Geier
- Department of Chemistry and Biochemistry
- Mount Allison University
- Sackville
- Canada
| | - Justin F. Binder
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
- Department of Chemistry
| | - Charles L. B. Macdonald
- Department of Chemistry and Biochemistry
- University of Windsor
- Windsor
- Canada
- Department of Chemistry
| | | | - Stephen A. Westcott
- Department of Chemistry and Biochemistry
- Mount Allison University
- Sackville
- Canada
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21
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Kim E, Jeon HJ, Park S, Chang S. Double Hydroboration of Quinolines
via
Borane Catalysis: Diastereoselective One Pot Synthesis of 3‐Hydroxytetrahydroquinolines. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201901050] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Eunae Kim
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Korea
- Korea Research Institute of Chemical Technology (KRICT) Daejeon 34141 Korea
| | - Hyun Ji Jeon
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon FunctionalizationInstitute for Basic Science (IBS) Daejeon 34141 Korea
| | - Sehoon Park
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon FunctionalizationInstitute for Basic Science (IBS) Daejeon 34141 Korea
| | - Sukbok Chang
- Department of ChemistryKorea Advanced Institute of Science and Technology (KAIST) Daejeon 34141 Korea
- Center for Catalytic Hydrocarbon FunctionalizationInstitute for Basic Science (IBS) Daejeon 34141 Korea
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22
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LaFortune JHW, Qu Z, Bamford KL, Trofimova A, Westcott SA, Stephan DW. Double Phosphinoboration of CO 2 : A Facile Route to Diphospha-Ureas. Chemistry 2019; 25:12063-12067. [PMID: 31355971 PMCID: PMC6916295 DOI: 10.1002/chem.201903407] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/25/2019] [Indexed: 12/27/2022]
Abstract
The reactions of CO2 with a series of phosphinoboranes, including R2 PBpin (R=Ph, tBu; pin=pinacol), R2 PBMes2 (R=Ph, tBu; Mes=2,4,6-Me3 -C6 H2 ), and R2 PBcat (R=Ph, tBu, Mes; cat=catechol) are described. Although R2 PBpin and R2 PBMes2 afford products of the form R2 PCO2 Bpin (R=Ph 1, tBu 4) and R2 PCO2 BMes2 (R=Ph 2, tBu 3), respectively, R2 PBcat lead to further reaction affording the diphospha-ureas, (R2 P)2 CO (R=Ph 5, tBu 6, Mes 7), together with O(Bcat)2 . Computational studies provide insight into the mechanism, revealing an intermediate derived from double phosphinoboration of CO2 .
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Affiliation(s)
- James H. W. LaFortune
- Department of ChemistryUniversity of Toronto80 St. George St.TorontoOntarioM5S 3H6Canada
| | - Zheng‐Wang Qu
- Mulliken Center for Theoretical ChemistryUniversity of BonnBeringstrasse 453115BonnGermany
| | - Karlee L. Bamford
- Department of ChemistryUniversity of Toronto80 St. George St.TorontoOntarioM5S 3H6Canada
| | - Alina Trofimova
- Department of ChemistryUniversity of Toronto80 St. George St.TorontoOntarioM5S 3H6Canada
| | - Stephen A. Westcott
- Department of Chemistry and BiochemistryMount Allison UniversitySackvilleNew BrunswickE4L 1G8Canada
| | - Douglas W. Stephan
- Department of ChemistryUniversity of Toronto80 St. George St.TorontoOntarioM5S 3H6Canada
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23
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LaFortune JHW, Trofimova A, Cummings H, Westcott SA, Stephan DW. Phosphinoboration of Diazobenzene: Intramolecular FLP Synthon for PN
2
B‐Derived Heterocycles. Chemistry 2019; 25:12521-12525. [DOI: 10.1002/chem.201903670] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2019] [Indexed: 11/11/2022]
Affiliation(s)
- James H. W. LaFortune
- Department of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Alina Trofimova
- Department of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Haley Cummings
- Department of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
| | - Stephen A. Westcott
- Department of Chemistry and BiochemistryMount Alison University Sackville New Brunswick E4L 1G8 Canada
| | - Douglas W. Stephan
- Department of ChemistryUniversity of Toronto 80 St. George St. Toronto Ontario M5S 3H6 Canada
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24
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Chen JY, Liao RZ. Mechanism and Regioselectivity of the Iron-Catalyzed Hydroboration of N-Heteroarenes: A Computational Study. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00292] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jia-Yi Chen
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
| | - Rong-Zhen Liao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education, Hubei Key Laboratory of Bioinorganic Chemistry and Materia Medica, Hubei Key Laboratory of Materials Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China
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25
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26
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Szynkiewicz N, Ordyszewska A, Chojnacki J, Grubba R. Diaminophosphinoboranes: effective reagents for phosphinoboration of CO2. RSC Adv 2019; 9:27749-27753. [PMID: 35530491 PMCID: PMC9070769 DOI: 10.1039/c9ra06638a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Accepted: 08/27/2019] [Indexed: 01/20/2023] Open
Abstract
The monomeric diaminophosphinoboranes readily react with CO2 under mild conditions to cleanly form products of the general formula in the absence of a catalyst. The isolated products from the CO2-phosphinoboration were fully characterized by NMR spectroscopy, IR spectroscopy, and X-ray diffraction. The mechanism of CO2 phosphinoboration with diaminophosphinoboranes was elucidated by DFT calculations. We present the activation of CO2 by aminophosphinoboranes along with the mechanism of CO2 phosphinoboration.![]()
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Affiliation(s)
- Natalia Szynkiewicz
- Department of Inorganic Chemistry
- Faculty of Chemistry
- Gdańsk University of Technology
- Gdansk
- Poland
| | - Anna Ordyszewska
- Department of Inorganic Chemistry
- Faculty of Chemistry
- Gdańsk University of Technology
- Gdansk
- Poland
| | - Jarosław Chojnacki
- Department of Inorganic Chemistry
- Faculty of Chemistry
- Gdańsk University of Technology
- Gdansk
- Poland
| | - Rafał Grubba
- Department of Inorganic Chemistry
- Faculty of Chemistry
- Gdańsk University of Technology
- Gdansk
- Poland
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27
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Trofimova A, LaFortune JHW, Qu ZW, Westcott SA, Stephan DW. 1,1-Phosphinoboration of diazomethanes. Chem Commun (Camb) 2019; 55:12100-12103. [DOI: 10.1039/c9cc06914c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactions of the phosphinoboranes Ph2PBMes2, Ph2PBpin, and Ph2PBcat with the diazomethanes Ph2CN2, C12H8CN2, and EtO2CCHN2 are shown to give products of 1,1-phosphinoboration.
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Affiliation(s)
| | | | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry
- Institut für Physikalische und Theoretische Chemie
- Rheinische Friedrich-Wilhelms-Universität Bonn
- 53115 Bonn
- Germany
| | - Stephen A. Westcott
- Department of Chemistry and Biochemistry
- Mount Alison University
- Sackville
- Canada
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28
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Franz D, Inoue S. Cationic Complexes of Boron and Aluminum: An Early 21st Century Viewpoint. Chemistry 2018; 25:2898-2926. [PMID: 30113744 DOI: 10.1002/chem.201803370] [Citation(s) in RCA: 34] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2018] [Indexed: 01/03/2023]
Abstract
Boron and aluminum are lighter Group 13 elements, found in daily life commodities, and considered environmentally benign. Nevertheless, they markedly differ in their elemental properties (e.g., metal character, atomic radius). The use of Lewis acidic complexes of boron and aluminum for methods of bond activation and catalysis (e.g., hydrogenation of unsaturated substrates, polymerization of olefins and epoxides) is quickly expanding. The introduction of cationic charge may boost the metalloid-centered Lewis acidity and allow for its fine-tuning particularly with regard to preference for "hard" or "soft" Lewis bases (i.e., substrates). Especially the isolation of low-coordinate cations (number of ligand atoms smaller than four) demands elaborate techniques of thermodynamic and kinetic stabilization (i.e., electronic saturation and steric shielding) by a ligand system. Furthermore, the properties of the solvent and the counteranion must be considered with care. Here, selected examples of boron and aluminum cations are described.
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Affiliation(s)
- Daniel Franz
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85748, Garching bei München, Germany
| | - Shigeyoshi Inoue
- Department of Chemistry, WACKER-Institute of Silicon Chemistry and Catalysis Research Center, Technische Universität München, Lichtenbergstr. 4, 85748, Garching bei München, Germany
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29
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Noguchi M, Suzuki K, Kobayashi J, Yurino T, Tsurugi H, Mashima K, Yamashita M. Planar and Bent BN-Embedded p-Quinodimethanes Synthesized by Transmetalation of Bis(trimethylsilyl)-1,4-dihydropyrazines with Chloroborane. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00294] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Mao Noguchi
- Department of Applied Chemistry, Graduate School of Science and Engineering, Chuo University, 1-23-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Katsunori Suzuki
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
| | - Jun Kobayashi
- Department of Applied Chemistry, Graduate School of Science and Engineering, Chuo University, 1-23-27 Kasuga, Bunkyo-ku, Tokyo 112-8551, Japan
| | - Taiga Yurino
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Hayato Tsurugi
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Kazushi Mashima
- Department of Chemistry, Graduate School of Engineering Science, Osaka University, Toyonaka, Osaka 560-8531, Japan
| | - Makoto Yamashita
- Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Furo-cho,
Chikusa-ku, Nagoya 464-8603, Japan
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30
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Zhang F, Song H, Zhuang X, Tung CH, Wang W. Iron-Catalyzed 1,2-Selective Hydroboration of N-Heteroarenes. J Am Chem Soc 2017; 139:17775-17778. [DOI: 10.1021/jacs.7b11416] [Citation(s) in RCA: 67] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Fanjun Zhang
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Heng Song
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Xuewen Zhuang
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Chen-Ho Tung
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
| | - Wenguang Wang
- School of Chemistry and Chemical
Engineering, Shandong University, No. 27 South Shanda Road, Jinan 250100, China
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