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Pomogaeva AV, Timoshkin AY. Hydrogen Activation by Frustrated and Not So Frustrated Lewis Pairs Based on Pyramidal Lewis Acid 9-Boratriptycene: A Computational Study. ACS OMEGA 2022; 7:48493-48505. [PMID: 36591180 PMCID: PMC9798527 DOI: 10.1021/acsomega.2c06836] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Accepted: 12/06/2022] [Indexed: 06/17/2023]
Abstract
Structural features and reactivity of frustrated Lewis pairs (FLPs) formed by pyramidal group 13 Lewis acids based on 9-bora and 9-alatriptycene and bulky phosphines P t Bu3, PPh3, and PCy3 are considered at the M06-2X/def2-TZVP level of theory. Classic FLP is formed only in the B(C6Me4)3CH/P t Bu3 system, while both FLP and donor-acceptor (DA) complex are observed in the B(C6F4)3CF/P t Bu3 system. Formation of DA complexes was observed in other systems; the B(C6H4)3CH·P t Bu3 complex features an elongated DA bond and can be considered a "latent" FLP. Transition states and reaction pathways for molecular hydrogen activation have been obtained. Processes of heterolytic hydrogen splitting are energetically more favored in solution compared to the gas phase, while activation energies in the gas phase and in solution are close. The alternative processes of hydrogenation of B-C or Al-C bonds in the source pyramidal Lewis acids in the absence of a Lewis base are exergonic but have larger activation energies than those for heterolytic hydrogen splitting. The tuning of Lewis acidity of 9-boratriptycene by changing the substituents allows one to control its reactivity with respect to hydrogen activation. Interestingly, the most promising system from the practical point of view is the DA complex B(C6H4)3CH·P t Bu3, which is predicted to provide both low activation energy and thermodynamic reversibility of the heterolytic hydrogen splitting process. It appears that such "not so frustrated" or "latent" FLPs are the best candidates for reversible heterolytic hydrogen splitting.
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2
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Brož B, Marek A. Tritiodefluorination of alkyl C-F groups. J Labelled Comp Radiopharm 2019; 62:743-750. [PMID: 31267564 DOI: 10.1002/jlcr.3782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2019] [Revised: 06/10/2019] [Accepted: 06/28/2019] [Indexed: 11/09/2022]
Abstract
A straightforward methodology of fluorine substitution by tritium/deuterium is reported. The described method is selective towards the F─C (sp3 ) group and leaves both the aromatic F─C (sp2 ) and F2 ─C (sp3 ) moieties unaffected. Alkylfluorides, readily synthesized from appropriate alcohols by treatment with diethylaminosulfur trifluoride (DAST) reagent in an overall yield up to 76%, undergoes activation with the boron-based Lewis acid B(C6 F5 )3 , and stoichiometric in situ reduction with a tritide/deuteride reagent-the [TMP2(3) H][2(3) HB(C6 F5 )3 ] system of frustrated Lewis pair. This methodology provides an isolated yield of up to 93% of regio-specifically labeled small organic compounds with superior 2 H-enrichment of over 95%. The specific activity of prepared 1-(2-[3 H]-ethyl)naphthalene was determined at 29.0 Ci/mmol. The site selectivity of the Lewis acid/ [TMP2(3) H][2(3) HB(C6 F5 )3 ] approach is orthogonal to currently used methods and allows for isotopic labeling of complementary positions in molecules. Reported labeling methodology proceeds well at ultra-mild reaction conditions (220 mbar of T2 ), allowing very low consumption of the radioactive source (4.2 Ci/156 GBq), and producing limited amount of radioactive waste.
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Affiliation(s)
- Břetislav Brož
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
| | - Aleš Marek
- Institute of Organic Chemistry and Biochemistry, The Czech Academy of Sciences, Prague, Czech Republic
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3
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Affiliation(s)
- Lei Liu
- Department of Physics & Earth Sciences, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany
- Mulliken Center for Theoretical Chemistry, Institute for Physical and Theoretical Chemistry, University of Bonn, Beringstraße 4, 53115 Bonn, Germany
| | - Binit Lukose
- School of Electrical and Computer Engineering, Boston University, Boston, Massachusetts 02215, United States
| | - Bernd Ensing
- Van’t Hoff Institute for Molecular Sciences, University of Amsterdam, 1098 XH Amsterdam, The Netherlands
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4
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Wang T, Daniliuc CG, Mück-Lichtenfeld C, Kehr G, Erker G. Formation of Reactive π-Conjugated Frustrated N/B Pairs by Borane-Induced Propargyl Amine Rearrangement. J Am Chem Soc 2018; 140:3635-3643. [PMID: 29444567 DOI: 10.1021/jacs.7b11958] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
N-Propargyltetramethylpiperidine reacts with a series of trans-alkenyl-B(C6F5)2 compounds to give the substituted alkenyl-bridged frustrated N/B Lewis pairs 5. Their structures and spectroscopic features indicate a pronounced participation of the mesomeric s-trans-iminium/borata-alkene resonance form. The compounds are thought to be formed in a stepwise addition/rearrangement process which is initiated by a trans-1,2-amine/borane FLP addition to the carbon-carbon triple bond to generate a reactive zwitterionic aziridinium/alkenylborate intermediate. Subsequent alkenylborate attack leads to opening of the activated three-membered heterocycle with clean formation of the products 5a-c. Treatment of the propargyl-TMP substrate with B(C6F5)3 gave a stable example of such an aziridinium/borate betaine, which was isolated and amply characterized. The products 5a-c are active N/B FLPs. They split dihydrogen heterolytically under mild conditions to give the respective NH+/BH- products 9a-c. These contain Z-configurated core C═C double bonds, which indicates rotational equilibration around the central C-C bond of 5a-c during this reaction. Structural and chemical features of the 5c system were analyzed by DFT calculations.
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Affiliation(s)
- Tongdao Wang
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , 48149 Münster , Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , 48149 Münster , Germany
| | - Christian Mück-Lichtenfeld
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , 48149 Münster , Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , 48149 Münster , Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut , Westfälische Wilhelms-Universität Münster , Corrensstraße 40 , 48149 Münster , Germany
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5
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Ye KY, Daniliuc CG, Dong S, Kehr G, Erker G. Frustrated Lewis Pair Behavior of an Open, Noninteracting Phosphane/Borane Pair at a Rigid Organic Framework: Exploring Decisive Factors for FLP Activity. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00819] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ke-Yin Ye
- Organisch-Chemisches Institut der Universität
Münster, Corrensstr. 40, 48149 Münster (Germany)
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut der Universität
Münster, Corrensstr. 40, 48149 Münster (Germany)
| | - Shunxi Dong
- Organisch-Chemisches Institut der Universität
Münster, Corrensstr. 40, 48149 Münster (Germany)
| | - Gerald Kehr
- Organisch-Chemisches Institut der Universität
Münster, Corrensstr. 40, 48149 Münster (Germany)
| | - Gerhard Erker
- Organisch-Chemisches Institut der Universität
Münster, Corrensstr. 40, 48149 Münster (Germany)
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6
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Xue YY, Sui JJ, Xu J, Ding YH. Theoretical Designs for Organoaluminum C 2Al 4R 4 with Well-Separated Al(I) and Al(III). ACS OMEGA 2017; 2:5407-5414. [PMID: 31457809 PMCID: PMC6644568 DOI: 10.1021/acsomega.7b00487] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Accepted: 08/16/2017] [Indexed: 05/04/2023]
Abstract
It is well-known that the chemistry of aluminum is dominated by Al(III) in the +3 oxidation state. Only during the past 2 decades has the chemistry of Al(I) and Al(II) been rapidly developed. However, if Al(I) and Al(III) are combined, the inherently high reactivities of Al(I) and Al(III) mostly result in their coupling with each other or interacting with surrounding elements, which easily results in significant deactivation or quenching of the desired oxidation states, as in the case of reported mixed valent Al-compounds. In this article, we report an unprecedented type of organoaluminum system, C2Al4R4 (R = H, SiH3, Si(C6H5)3, SiiPrDis2, SiMe(SitBu3)2), whose lowest-energy structure, C2Al4R4-01, contains two Al(I) and two Al(III) atoms. The global nature and bonding motif of the parent C2Al4R4-01 (R = H) were supported by an extensive global isomeric search, CBS-QB3 energy calculations, adaptive natural density partitioning, and bond order analysis. Interestingly and in sharp contrast to most organoaluminum species, C2Al4R4-01 is associated with little multicenter bonding. C2Al4R4-01 has a high feasibility of being observed either in the gas or condensed phases (with suitable substitutents). With well-separated Al(I) and Al(III), C2Al4R4-01 (with suitable substitutents) could serve as the first Al/Al frustrated Lewis pair.
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Affiliation(s)
- Ying-ying Xue
- Laboratory
of Theoretical and Computational Chemistry, Institute of Theoretical
Chemistry, Jilin University, Changchun 130023, China
| | - Jing-jing Sui
- Laboratory
of Theoretical and Computational Chemistry, Institute of Theoretical
Chemistry, Jilin University, Changchun 130023, China
| | - Jing Xu
- Department
of Chemistry, University of California, Irvine, California 92697-2025, United States
- E-mail: (J.X)
| | - Yi-hong Ding
- Laboratory
of Theoretical and Computational Chemistry, Institute of Theoretical
Chemistry, Jilin University, Changchun 130023, China
- E-mail: (Y.-h.D)
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7
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Liu L, Brandenburg JG, Grimme S. On the hydrogen activation by frustrated Lewis pairs in the solid state: benchmark studies and theoretical insights. PHILOSOPHICAL TRANSACTIONS. SERIES A, MATHEMATICAL, PHYSICAL, AND ENGINEERING SCIENCES 2017; 375:20170006. [PMID: 28739964 PMCID: PMC5540839 DOI: 10.1098/rsta.2017.0006] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 02/15/2017] [Indexed: 05/26/2023]
Abstract
Recently, the concept of small molecule activation by frustrated Lewis pairs (FLPs) has been expanded to the solid state showing a variety of interesting reactivities. Therefore, there is a need to establish a computational protocol to investigate such systems theoretically. In the present study, we selected several FLPs and applied multiple levels of theory, ranging from a semi-empirical tight-binding Hamiltonian to dispersion corrected hybrid density functionals. Their performance is benchmarked for the computation of crystal geometries, thermostatistical contributions, and reaction energies. We show that the computationally efficient HF-3c method gives accurate crystal structures and is numerically stable and sufficiently fast for routine applications. This method also gives reliable values for the thermostatistical contributions to Gibbs free energies. The meta-generalized gradient approximated TPSS-D3 evaluated in a projector augmented plane wave basis set is able to produce sufficiently accurate reaction electronic energies. The established protocol is intended to support experimental studies and to predict new reactions in the emerging field of solid-state FLPs.This article is part of the themed issue 'Frustrated Lewis pair chemistry'.
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Affiliation(s)
- Lei Liu
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstrasse 4, 53115 Bonn, Germany
| | - Jan Gerit Brandenburg
- London Centre for Nanotechnology, University College London, 17-19 Gordon Street, WC1H 0AH London, UK
- Thomas Young Centre, University College London, Gower Street, WC1E 6BT London, UK
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstrasse 4, 53115 Bonn, Germany
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8
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Jian Z, Krupski S, Škoch K, Kehr G, Daniliuc CG, Císařová I, Štěpnička P, Erker G. Phosphine–Borane Frustrated Lewis Pairs Derived from a 1,1′-Disubstituted Ferrocene Scaffold: Synthesis and Hydrogenation Catalysis. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00363] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Zhongbao Jian
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
| | - Sergei Krupski
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
| | - Karel Škoch
- Department of Inorganic Chemistry,
Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Gerald Kehr
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
| | - Ivana Císařová
- Department of Inorganic Chemistry,
Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Petr Štěpnička
- Department of Inorganic Chemistry,
Faculty of Science, Charles University, Hlavova 2030, 128 40 Prague, Czech Republic
| | - Gerhard Erker
- Organisch-Chemisches
Institut, Westfälische Wilhelms-Universität Münster, Corrensstrasse
40, 48149 Münster, Germany
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9
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Follet E, Mayer P, Stephenson DS, Ofial AR, Berionni G. Reactivity-Tuning in Frustrated Lewis Pairs: Nucleophilicity and Lewis Basicity of Sterically Hindered Phosphines. Chemistry 2017; 23:7422-7427. [DOI: 10.1002/chem.201701080] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2017] [Indexed: 01/21/2023]
Affiliation(s)
- Elsa Follet
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstr. 5-13 81377 München Germany
| | - Peter Mayer
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstr. 5-13 81377 München Germany
| | - David S. Stephenson
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstr. 5-13 81377 München Germany
| | - Armin R. Ofial
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstr. 5-13 81377 München Germany
| | - Guillaume Berionni
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstr. 5-13 81377 München Germany
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10
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Kehr G, Erker G. Frustrated Lewis Pair Chemistry: Searching for New Reactions. CHEM REC 2017; 17:803-815. [DOI: 10.1002/tcr.201700010] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2017] [Indexed: 01/26/2023]
Affiliation(s)
- Gerald Kehr
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; 48149 Münster Corrensstr. 40 Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität; 48149 Münster Corrensstr. 40 Germany
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11
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Bakos M, Gyömöre Á, Domján A, Soós T. Auto-Tandem Catalysis with Frustrated Lewis Pairs for Reductive Etherification of Aldehydes and Ketones. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700231] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Mária Bakos
- Research Centre for Natural Sciences; Hungarian Academy of Sciences; Institute of Organic Chemistry; Magyar tudósok körútja 2 1117 Budapest Hungary
| | - Ádám Gyömöre
- Research Centre for Natural Sciences; Hungarian Academy of Sciences; Institute of Organic Chemistry; Magyar tudósok körútja 2 1117 Budapest Hungary
| | - Attila Domján
- Research Centre for Natural Sciences; Hungarian Academy of Sciences; Institute of Organic Chemistry; Magyar tudósok körútja 2 1117 Budapest Hungary
| | - Tibor Soós
- Research Centre for Natural Sciences; Hungarian Academy of Sciences; Institute of Organic Chemistry; Magyar tudósok körútja 2 1117 Budapest Hungary
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12
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Bakos M, Gyömöre Á, Domján A, Soós T. Auto-Tandem Catalysis with Frustrated Lewis Pairs for Reductive Etherification of Aldehydes and Ketones. Angew Chem Int Ed Engl 2017; 56:5217-5221. [PMID: 28378401 DOI: 10.1002/anie.201700231] [Citation(s) in RCA: 64] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Revised: 02/10/2017] [Indexed: 01/19/2023]
Abstract
Herein we report that a single frustrated Lewis pair (FLP) catalyst can promote the reductive etherification of aldehydes and ketones. The reaction does not require an exogenous acid catalyst, but the combined action of FLP on H2 , R-OH or H2 O generates the required Brønsted acid in a reversible, "turn on" manner. The method is not only a complementary metal-free reductive etherification, but also a niche procedure for ethers that would be either synthetically inconvenient or even intractable to access by alternative synthetic protocols.
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Affiliation(s)
- Mária Bakos
- Research Centre for Natural Sciences, Hungarian Academy of Sciences, Institute of Organic Chemistry, Magyar tudósok körútja 2, 1117, Budapest, Hungary
| | - Ádám Gyömöre
- Research Centre for Natural Sciences, Hungarian Academy of Sciences, Institute of Organic Chemistry, Magyar tudósok körútja 2, 1117, Budapest, Hungary
| | - Attila Domján
- Research Centre for Natural Sciences, Hungarian Academy of Sciences, Institute of Organic Chemistry, Magyar tudósok körútja 2, 1117, Budapest, Hungary
| | - Tibor Soós
- Research Centre for Natural Sciences, Hungarian Academy of Sciences, Institute of Organic Chemistry, Magyar tudósok körútja 2, 1117, Budapest, Hungary
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13
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Dupré J, Gaumont AC, Lakhdar S. Mechanistic Investigations of Reactions of the Frustrated Lewis Pairs (Triarylphosphines/B(C 6F 5) 3) with Michael Acceptors. Org Lett 2017; 19:694-697. [PMID: 28103042 DOI: 10.1021/acs.orglett.6b03868] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Frustrated Lewis pair (FLP)-catalyzed reduction of Michael acceptors is a challenging reaction that proceeds with specific FLP structures. Kinetics and equilibrium of the reactions of two phosphines (Ar3P), namely tri(1-naphthyl)phosphine and tri(o-tolyl)phosphine, are reported with reference electrophiles. The reason for the failure of the FLPs (Ar3P/B(C6F5)3) to reduce activated alkenes under H2 pressure is shown to be a hydrophosphination process that inhibits the reduction reaction. Kinetic and thermodynamic factors controlling both pathways are discussed in light of Mayr's free linear energy relationships.
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Affiliation(s)
- Jonathan Dupré
- Normandie Université, Laboratoire de Chimie Moléculaire et Thio-organique, CNRS-UMR 6507, ENSICAEN, Université de Caen Normandie, 6, Boulevard du Maréchal Juin, Caen 14000, France
| | - Annie-Claude Gaumont
- Normandie Université, Laboratoire de Chimie Moléculaire et Thio-organique, CNRS-UMR 6507, ENSICAEN, Université de Caen Normandie, 6, Boulevard du Maréchal Juin, Caen 14000, France
| | - Sami Lakhdar
- Normandie Université, Laboratoire de Chimie Moléculaire et Thio-organique, CNRS-UMR 6507, ENSICAEN, Université de Caen Normandie, 6, Boulevard du Maréchal Juin, Caen 14000, France
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14
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Elmer LM, Kehr G, Daniliuc CG, Siedow M, Eckert H, Tesch M, Studer A, Williams K, Warren TH, Erker G. The Chemistry of a Non-Interacting Vicinal Frustrated Phosphane/Borane Lewis Pair. Chemistry 2016; 23:6056-6068. [PMID: 27925311 DOI: 10.1002/chem.201603954] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/22/2016] [Revised: 09/23/2016] [Indexed: 12/14/2022]
Abstract
The dimesitylphosphinocyclopentene/HB(C6 F5 )2 -derived vicinal trans-1,2-P/B frustrated Lewis pair (FLP) 4 shows no direct phosphane-borane interaction. Toward some reagents it behaves similar to an intermolecular FLP; it cleaves dihydrogen, deprotonates terminal alkynes, and adds to organic carbonyl compounds including CO2 . It shows typical intramolecular FLP reaction modes (cooperative 1,1-additions) to mesityl azide, to carbon monoxide, and to NO. The latter reaction yields a persistent P/B FLPNO nitroxide radical, which undergoes H-atom abstraction reactions. The FLP 4 serves as a template for the CO reduction by [HB(C6 F5 )2 ] to generate a FLP-η2 -formylborane. The formylborane moiety is removed from the FLP template by reaction with pyridine to yield a genuine pyridine stabilized formylborane that undergoes characteristic borane carbaldehyde reactions (Wittig olefination, imine formation). Most new products were characterized by X-ray diffraction.
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Affiliation(s)
- Lisa-Maria Elmer
- Organisch-Chemisches Institut, Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut, Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Melanie Siedow
- Institut für Physikalische Chemie, Universutät Münster, Corrensstraße 28/30, 48149, Münster, Germany
| | - Hellmut Eckert
- Institut für Physikalische Chemie, Universutät Münster, Corrensstraße 28/30, 48149, Münster, Germany.,Instituto de Física Sao Carlos, Universidade de Sao Paulo, CP 369, 13560-970, Sao Carlos, SP, Brasil
| | - Matthias Tesch
- Organisch-Chemisches Institut, Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Kamille Williams
- Georgetown University, Department of Chemistry, Box 571227, Washington DC, 20057-1227, USA
| | - Timothy H Warren
- Georgetown University, Department of Chemistry, Box 571227, Washington DC, 20057-1227, USA
| | - Gerhard Erker
- Organisch-Chemisches Institut, Universität Münster, Corrensstraße 40, 48149, Münster, Germany
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15
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Frömel S, Daniliuc CG, Bannwarth C, Grimme S, Bussmann K, Kehr G, Erker G. Indirect synthesis of a pair of formal methane activation products at a phosphane/borane frustrated Lewis pair. Dalton Trans 2016; 45:19230-19233. [DOI: 10.1039/c6dt04206f] [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
The endergonic formal FLP methane activation products were obtained by an indirect stepwise synthesis and shown to be kinetically stable.
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Affiliation(s)
- Silke Frömel
- Organisch-Chemisches Institut
- Universität Münster
- 48149 Münster
- Germany
| | | | - Christoph Bannwarth
- Mulliken Center for Theoretical Chemistry
- Institut für Physikalische und Theoretische Chemie
- Universität Bonn
- D-53115 Bonn
- Germany
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry
- Institut für Physikalische und Theoretische Chemie
- Universität Bonn
- D-53115 Bonn
- Germany
| | - Kathrin Bussmann
- Organisch-Chemisches Institut
- Universität Münster
- 48149 Münster
- Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut
- Universität Münster
- 48149 Münster
- Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut
- Universität Münster
- 48149 Münster
- Germany
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