1
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Golwankar RR, Curry TD, Paranjothi CJ, Blakemore JD. Molecular Influences on the Quantification of Lewis Acidity with Phosphine Oxide Probes. Inorg Chem 2023. [PMID: 36943934 DOI: 10.1021/acs.inorgchem.3c00084] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2023]
Abstract
Gutmann-Beckett-type measurements with phosphine oxide probes can be used to estimate effective Lewis acidity with 31P nuclear magnetic resonance spectroscopy, but the influence of the molecular structure of a given probe on the quantification of Lewis acidity remains poorly documented in experimental work. Here, a quantitative comparison of triethyl (E), trioctyl (O), and triphenyl (P) phosphine oxides as molecular probes of Lewis acidity has been carried out via titration studies in MeCN with a test set of six mono- and divalent metal triflate salts. In comparison to E, the bulkier O displays a similar range of chemical shift values and binding affinities for the various test metal ions. Spectral linewidths and speciation properties vary for individual cation-to-probe ratios, however, confirming probe-specific properties that can impact the data quality. Importantly, P displays a consistently narrower dynamic range than both E and O, illustrating how electronic changes at phosphorus can influence the NMR response. Comparative parametrizations of the effective Lewis acidities of a broader range of metal ions, including the trivalent rare earth ions Y3+, Lu3+, and Sc3+ as well as the uranyl ion (UO22+), can be understood in light of these results, providing insight into the fundamental chemical processes underlying the useful approach of single-point measurements for quantification of effective Lewis acidity. Together with a study of counteranion effects reported here, these data clarify the diverse ensemble of factors that can influence the measurement of Lewis acid/base interactions.
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Affiliation(s)
- Riddhi R Golwankar
- Department of Chemistry, University of Kansas, 1845 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - T Davis Curry
- Department of Chemistry, University of Kansas, 1845 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - Cecilia J Paranjothi
- Department of Chemistry, University of Kansas, 1845 Irving Hill Road, Lawrence, Kansas 66045, United States
| | - James D Blakemore
- Department of Chemistry, University of Kansas, 1845 Irving Hill Road, Lawrence, Kansas 66045, United States
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2
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Zhang Y, Chen S, Al-Enizi AM, Nafady A, Tang Z, Ma S. Chiral Frustrated Lewis Pair@Metal-Organic Framework as a New Platform for Heterogeneous Asymmetric Hydrogenation. Angew Chem Int Ed Engl 2023; 62:e202213399. [PMID: 36347776 DOI: 10.1002/anie.202213399] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/11/2022] [Indexed: 11/11/2022]
Abstract
Asymmetric hydrogenation, a seminal strategy for the synthesis of chiral molecules, remains largely unmet in terms of activation by non-metal sites of heterogeneous catalysts. Herein, as demonstrated by combined computational and experimental studies, we present a general strategy for integrating rationally designed molecular chiral frustrated Lewis pair (CFLP) with porous metal-organic framework (MOF) to construct the catalyst CFLP@MOF that can efficiently promote the asymmetric hydrogenation in a heterogeneous manner, which for the first time extends the concept of chiral frustrated Lewis pair from homogeneous system to heterogeneous catalysis. Significantly, the developed CFLP@MOF, inherits the merits of both homogeneous and heterogeneous catalysts, with high activity/enantio-selectivity and excellent recyclability/regenerability. Our work not only advances CFLP@MOF as a new platform for heterogeneous asymmetric hydrogenation, but also opens a new avenue for the design and preparation of advanced catalysts for asymmetric catalysis.
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Affiliation(s)
- Yin Zhang
- Department of Chemistry, University of North Texas, 1508 W Mulberry St, Denton, TX 76201, USA
| | - Songbo Chen
- School of Physical Science and Technology, Lanzhou University, No. 222 South Tianshui Road, Lanzhou, 730000, Gansu Province, P.R. China
| | - Abdullah M Al-Enizi
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Ayman Nafady
- Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia
| | - Zhiyong Tang
- National Center for Nanoscience and Nanotechnology, No.11 ZhongGuanCun BeiYiTiao, 100190, Beijing, P.R. China
| | - Shengqian Ma
- Department of Chemistry, University of North Texas, 1508 W Mulberry St, Denton, TX 76201, USA
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3
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Asymmetric hydrosilylations of N-sulfonyl ketimines and vicinal diimines with chiral boranes. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154202] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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4
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Li X, Song Q. Chiral Borane-Catalyzed Enantioselective Reactions. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202208018] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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5
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Ríos P, Rodríguez A, Conejero S. Activation of Si–H and B–H bonds by Lewis acidic transition metals and p-block elements: same, but different. Chem Sci 2022; 13:7392-7418. [PMID: 35872827 PMCID: PMC9241980 DOI: 10.1039/d2sc02324e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2022] [Accepted: 05/18/2022] [Indexed: 01/01/2023] Open
Abstract
In this Perspective we discuss the ability of transition metal complexes to activate and cleave the Si–H and B–H bonds of hydrosilanes and hydroboranes (tri- and tetra-coordinated) in an electrophilic manner, avoiding the need for the metal centre to undergo two-electron processes (oxidative addition/reductive elimination). A formal polarization of E–H bonds (E = Si, B) upon their coordination to the metal centre to form σ-EH complexes (with coordination modes η1 or η2) favors this type of bond activation that can lead to reactivities involving the formation of transient silylium and borenium/boronium cations similar to those proposed in silylation and borylation processes catalysed by boron and aluminium Lewis acids. We compare the reactivity of transition metal complexes and boron/aluminium Lewis acids through a series of catalytic reactions in which pieces of evidence suggest mechanisms involving electrophilic reaction pathways. In this Perspective we compare the ability of transition metals and p-block Lewis acids to activate electrophilically hydrosilanes and hydroboranes. The mechanistic similarities and dissimilarities in different catalytic transformations are analyzed.![]()
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Affiliation(s)
- Pablo Ríos
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica CSIC and Universidad de Sevilla, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
| | - Amor Rodríguez
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica CSIC and Universidad de Sevilla, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
| | - Salvador Conejero
- Instituto de Investigaciones Químicas (IIQ), Departamento de Química Inorgánica CSIC and Universidad de Sevilla, Centro de Innovación en Química Avanzada (ORFEO-CINQA), C/Américo Vespucio 49, 41092, Sevilla, Spain
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6
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Chen W, Tan C, Wang H, Ye X. The Development of Organocatalytic Asymmetric Reduction of Carbonyls and Imines Using Silicon Hydrides. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100394] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Wenchao Chen
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Choon‐Hong Tan
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link 637371 Singapore
| | - Hong Wang
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
| | - Xinyi Ye
- College of Pharmaceutical Science & Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals Zhejiang University of Technology 18 Chaowang Road Hangzhou 310014 P. R. China
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7
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Garg S, Unruh DK, Krempner C. Synthesis, structures and catalytic activity of some BINOL based boronates and boronium salts. Dalton Trans 2021; 50:5044-5049. [PMID: 33877202 DOI: 10.1039/d1dt00842k] [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 BINOL supported chiral boronate ester [C10H12O2BC6F5(THF)] [(R)-1], [C10H12O2BC6F5(O[double bond, length as m-dash]PEt3)] [(R)-3] and [C10H12O2BC6F5]2 [(R,R)-2] as well as the chiral boronium salts [C10H12O2B(O[double bond, length as m-dash]PEt3)2]+[B(O2C10H12)2]-, [(R)-6] and [C10H12O2B(O[double bond, length as m-dash]SMe2)2]+[B(O2C10H12)2]- [(R)-7] have been synthesized, characterized by NMR spectroscopy, and the solid state structures of [(R)-1], [(R,R)-2] and [(R)-3] determined. Chiral ester [(R)-1] was found to be a potent Lewis acid, similar to B(C6F5)3, and capable of rapidly catalyzing the annulation of (R)-, (S)- and rac-styrene oxide with nitrone PhCH[double bond, length as m-dash]N(O)Me to trans-2-methyl-3,6-diphenyl-1,4,2-dioxazine (trans-11) with high regio- and diastereoslectivities.
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Affiliation(s)
- Shipra Garg
- Department of Chemistry and Biochemistry, Texas Tech University, Memorial Dr. & Boston, Lubbock, TX 79409, USA.
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8
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Uvarov VM, de Vekki DA. Recent progress in the development of catalytic systems for homogenous asymmetric hydrosilylation of ketones. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121415] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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9
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Affiliation(s)
- Nan Li
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University Beijing 100871 China
- Henan Key Laboratory of Function‐Oriented Porous Materials, College of Chemistry and Chemical Engineering, Luoyang Normal University, Luoyang Henan 471934 China
| | - Wen‐Xiong Zhang
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University Beijing 100871 China
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10
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Adonin NY, Bardin VV. Polyfluorinated arylboranes as catalysts in organic synthesis. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.05.002] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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11
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Affiliation(s)
- Wei Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100049 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Xiangqing Feng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100049 China
- University of Chinese Academy of Sciences Beijing 100049 China
| | - Haifeng Du
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences Beijing 100049 China
- University of Chinese Academy of Sciences Beijing 100049 China
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12
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Rysak V, Dixit R, Trivelli X, Merle N, Agbossou-Niedercorn F, Vanka K, Michon C. Catalytic reductive deoxygenation of esters to ethers driven by hydrosilane activation through non-covalent interactions with a fluorinated borate salt. Catal Sci Technol 2020. [DOI: 10.1039/d0cy00775g] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A fluorinated borate BArF salt catalyses the reductive deoxygenation of esters to ethers by using hydrosilanes. Experimental and theoretical studies highlight the role of noncovalent interactions in the reaction mechanism.
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Affiliation(s)
- Vincent Rysak
- Univ. Lille
- CNRS
- Centrale Lille
- Univ. Artois
- UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide
| | - Ruchi Dixit
- Physical and Material Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | | | - Nicolas Merle
- Univ. Lille
- CNRS
- Centrale Lille
- Univ. Artois
- UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide
| | | | - Kumar Vanka
- Physical and Material Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Christophe Michon
- Univ. Lille
- CNRS
- Centrale Lille
- Univ. Artois
- UMR 8181 – UCCS – Unité de Catalyse et Chimie du Solide
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13
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Süsse L, LaFortune JHW, Stephan DW, Oestreich M. Axially Chiral, Electrophilic Fluorophosphonium Cations: Synthesis, Lewis Acidity, and Reactivity in the Hydrosilylation of Ketones. Organometallics 2019. [DOI: 10.1021/acs.organomet.8b00912] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Lars Süsse
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - James H. W. LaFortune
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Douglas W. Stephan
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
- Department of Chemistry, University of Toronto, 80 St. George Street, Toronto, Ontario, Canada M5S 3H6
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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14
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Facundo AA, Arévalo A, Fundora-Galano G, Flores-Álamo M, Orgaz E, García JJ. Hydrodefluorination of functionalized fluoroaromatics with triethylphosphine: a theoretical and experimental study. NEW J CHEM 2019. [DOI: 10.1039/c9nj00721k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new mechanistic proposal based in theoretical and experimental evidence invoking the participation of water is presented.
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Affiliation(s)
- Aldo A. Facundo
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Alma Arévalo
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Gabriela Fundora-Galano
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Marcos Flores-Álamo
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Emilio Orgaz
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
| | - Juventino J. García
- Facultad de Química
- Universidad Nacional Autónoma de México
- Circuito Interior
- Ciudad Universitaria
- México City 04510
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15
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Mercea DM, Howlett MG, Piascik AD, Scott DJ, Steven A, Ashley AE, Fuchter MJ. Enantioselective reduction of N-alkyl ketimines with frustrated Lewis pair catalysis using chiral borenium ions. Chem Commun (Camb) 2019; 55:7077-7080. [DOI: 10.1039/c9cc02900a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Effective enantioselective reduction of ketimines has been demonstrated by ‘frustrated’ Lewis pair catalysis using an IBiox-stabilised borenium cation.
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Affiliation(s)
- Dan M. Mercea
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London
- UK
| | - Michael G. Howlett
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London
- UK
| | - Adam D. Piascik
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London
- UK
| | - Daniel J. Scott
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London
- UK
| | | | - Andrew E. Ashley
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London
- UK
| | - Matthew J. Fuchter
- Department of Chemistry
- Imperial College London
- Molecular Sciences Research Hub
- London
- UK
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16
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Baumgarth H, Meier G, von Hahmann CN, Braun T. Reactivity of rhodium and iridium peroxido complexes towards hydrogen in the presence of B(C 6F 5) 3 or [H(OEt 2) 2][B{3,5-(CF 3) 2C 6H 3} 4]. Dalton Trans 2018; 47:16299-16304. [PMID: 30403233 DOI: 10.1039/c8dt03853h] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
The peroxido complexes trans-[M(4-C5F4N)(O2)(CNtBu)(PR3)2] (1: M = Rh, R = Et; 2a: M = Ir, R = iPr) can be used in the metal-mediated hydrogenation of O2. The reaction of trans-[Rh(4-C5F4N)(O2)(CNtBu)(PEt3)2] (1) with B(C6F5)3 and H2 gave trans-[Rh(4-C5F4N)(CNtBu)(PEt3)2] (3), OPEt3 and (H2O)·B(C6F5)3, whereas treatment of [H(OEt2)2][B{3,5-(CF3)2C6H3}4] with 1 in the presence of H2 yielded trans-[Rh(4-C5F4N)(CNtBu)(PEt3)2] (3) and H2O2. The reactivity of 2a towards B(C6F5)3 and BClCy2 was also studied and an intermediate was detected which is assigned to be trans-[Ir(4-C5F4N)(Cl)(OOBCy2)(CNtBu)(PiPr3)2] (4a).
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Affiliation(s)
- Hanna Baumgarth
- Humboldt-Universität zu Berlin, Department of Chemistry, Brook-Taylor-Straße 2, D-12489 Berlin, Germany.
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17
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Tu X, Zeng N, Li R, Zhao Y, Xie D, Peng Q, Wang X. C
2
‐Symmetric Bicyclic Bisborane Catalysts: Kinetic or Thermodynamic Products of a Reversible Hydroboration of Dienes. Angew Chem Int Ed Engl 2018; 57:15096-15100. [DOI: 10.1002/anie.201808289] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Xian‐Shuang Tu
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ning‐Ning Zeng
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ru‐Ye Li
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Yu‐Quan Zhao
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - De‐Zhen Xie
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Qian Peng
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Xiao‐Chen Wang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
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18
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Tu X, Zeng N, Li R, Zhao Y, Xie D, Peng Q, Wang X. C
2
‐Symmetric Bicyclic Bisborane Catalysts: Kinetic or Thermodynamic Products of a Reversible Hydroboration of Dienes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201808289] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xian‐Shuang Tu
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ning‐Ning Zeng
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Ru‐Ye Li
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Yu‐Quan Zhao
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - De‐Zhen Xie
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Qian Peng
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
| | - Xiao‐Chen Wang
- State Key Laboratory and Institute of Elemento-Organic ChemistryCollege of Chemistry and Collaborative Innovation Center of Chemical Science and Engineering (Tianjin)Nankai University 94 Weijin Road Tianjin 300071 China
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19
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Süsse L, Vogler M, Mewald M, Kemper B, Irran E, Oestreich M. Enantioselektive Nazarov-Cyclisierungen, die von einer axial-chiralen, C 6
F 5
-substituierten Bor-Lewis-Säure katalysiert werden. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806011] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Lars Süsse
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Maria Vogler
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Marius Mewald
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | - Benedict Kemper
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
| | - Elisabeth Irran
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Martin Oestreich
- Institut für Chemie; Technische Universität Berlin; Straße des 17. Juni 115 10623 Berlin Deutschland
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstraße 40 48149 Münster Deutschland
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20
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Süsse L, Vogler M, Mewald M, Kemper B, Irran E, Oestreich M. Enantioselective Nazarov Cyclizations Catalyzed by an Axial Chiral C6
F5
-Substituted Boron Lewis Acid. Angew Chem Int Ed Engl 2018; 57:11441-11444. [PMID: 29978948 DOI: 10.1002/anie.201806011] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Indexed: 11/07/2022]
Affiliation(s)
- Lars Süsse
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
| | - Maria Vogler
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
| | - Marius Mewald
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Benedict Kemper
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
| | - Elisabeth Irran
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
| | - Martin Oestreich
- Institut für Chemie; Technische Universität Berlin; Strasse des 17. Juni 115 10623 Berlin Germany
- Organisch-Chemisches Institut; Westfälische Wilhelms-Universität Münster; Corrensstrasse 40 48149 Münster Germany
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21
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Meng W, Feng X, Du H. Frustrated Lewis Pairs Catalyzed Asymmetric Metal-Free Hydrogenations and Hydrosilylations. Acc Chem Res 2018; 51:191-201. [PMID: 29243918 DOI: 10.1021/acs.accounts.7b00530] [Citation(s) in RCA: 167] [Impact Index Per Article: 27.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
The use of frustrated Lewis pairs is an extremely important approach to metal-free hydrogenations. In contrast to the rapid growth of catalytic reactions, asymmetric hydrogenations are far less developed due to a severe shortage of readily available chiral frustrated Lewis pair catalysts with high catalytic activities and selectivities. Unlike the stable Lewis base component of frustrated Lewis pairs, the moisture-sensitive boron Lewis acid component is difficult to prepare. The development of convenient methods for the quick construction of chiral boron Lewis acids is therefore of great interest. In this Account, we summarize our recent studies on frustrated Lewis pair-catalyzed, asymmetric metal-free hydrogenations and hydrosilylations. To address the shortage of highly active and selective catalysts, we developed a novel strategy for the in situ preparation of chiral boron Lewis acids by the hydroboration of chiral dienes or diynes with Piers' borane without further purification, which allows chiral dienes or diynes to act like ligands. This strategy ensures the construction of a useful toolbox of catalysts for asymmetric metal-free hydrogenations and hydrosilylations is rapid and operationally simple. Another strategy is using combinations of readily available Lewis acids and bases containing hydridic and acidic hydrogen atoms, respectively, as a novel type of frustrated Lewis pairs. Such systems provide a great opportunity for using simple chiral Lewis bases as the origins of asymmetric induction. With chiral diene-derived boron Lewis acids as catalysts, a broad range of unsaturated compounds, such as imines, silyl enol ethers, 2,3-disubstituted quinoxalines, and polysubstituted quinolines, are all viable substrates for asymmetric metal-free hydrogenations and give the corresponding products in good yields with high enantioselectivities and/or stereoselectivities. These chiral catalysts are very effective for bulky substrates, and the substrate scope for these metal-free asymmetric hydrogenations has been dramatically expanded. Chiral alkenylboranes were designed to enhance the rigidity of the framework and modify the Lewis acidity through the resulting double bonds. Frustrated Lewis pairs of chiral alkenylboranes and phosphines are a class of highly effective catalysts for asymmetric Piers-type hydrosilylations of 1,2-dicarbonyl compounds, and they give the desired products in high yields and enantioselectivities. Moreover, asymmetric transfer hydrogenations of imines and quinoxalines with ammonia borane as the hydrogen source have been achieved with frustrated Lewis pair of Piers' borane and (R)-tert-butylsulfinamide as the catalyst. Mechanistic studies have suggested that the hydrogen transfer occurs via an 8-membered ring transition state, and regeneration of the reactive frustrated Lewis pair with ammonia borane occurs through a concerted 6-membered ring transition state.
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Affiliation(s)
- Wei Meng
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Xiangqing Feng
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Haifeng Du
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, CAS Research/Education Center for Excellence in Molecular
Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
- School of Chemical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China
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22
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Rarig RAF, Nelson JM, Vedejs E. Synthesis of a Nonracemic C 2-Symmetric Tetrahydro-1,4-azaborine and Evaluation of Hydroboration Enantioselectivity. J Org Chem 2017; 82:12757-12762. [PMID: 29110479 DOI: 10.1021/acs.joc.7b01904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Tetrahydro-1,4-azaborines were accessed by hydroboration of N,N-diprenyltoluenesulfonamide 4. Conversion to the methylborinates 11 and 12 followed by heating with l-alanine and crystallization afforded (R,R,S)-13 (27%). Reduction of borinic acid (R,R)-18 with Soderquist's KH* gave (R,R)-19, and hydride abstraction by TMSCl in the presence of alkenes resulted in hydroboration, 84-86% ee for (Z)-alkenes, but (E)-alkenes or 1,1-disubstituted alkenes gave <5% ee.
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Affiliation(s)
- Robert-André F Rarig
- Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - John M Nelson
- Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States
| | - Edwin Vedejs
- Department of Chemistry, University of Michigan , Ann Arbor, Michigan 48109, United States
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23
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Kannan R, Kumar S, Andrews AP, Jemmis ED, Venugopal A. Consequence of Ligand Bite Angle on Bismuth Lewis Acidity. Inorg Chem 2017; 56:9391-9395. [DOI: 10.1021/acs.inorgchem.7b01243] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ramkumar Kannan
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram 695551, India
| | - Sandeep Kumar
- Department
of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Alex P. Andrews
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram 695551, India
| | - Eluvathingal D. Jemmis
- Department
of Inorganic and Physical Chemistry, Indian Institute of Science, Bangalore 560012, India
| | - Ajay Venugopal
- School of Chemistry, Indian Institute of Science Education and Research Thiruvananthapuram, Vithura, Thiruvananthapuram 695551, India
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24
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Abstract
The synthesis, stability and catalytic reactivity of borocations are described in the context of their reaction in frustrated Lewis pair-type processes.
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Affiliation(s)
| | - C. M. Crudden
- Department of Chemistry
- Queen's University
- Kingston
- Canada
- Institute of Transformative Bio-Molecules (WPI-ITbM)
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25
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Bender TA, Dabrowski JA, Zhong H, Gagné MR. Diastereoselective B(C6F5)3-Catalyzed Reductive Carbocyclization of Unsaturated Carbohydrates. Org Lett 2016; 18:4120-3. [DOI: 10.1021/acs.orglett.6b02050] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Trandon A. Bender
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | | | - Hongyu Zhong
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
| | - Michel R. Gagné
- Department
of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, North Carolina 27599, United States
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26
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Tlahuext-Aca A, Hopkinson MN, Daniliuc CG, Glorius F. Oxidative Addition to Gold(I) by Photoredox Catalysis: Straightforward Access to Diverse (C,N)-Cyclometalated Gold(III) Complexes. Chemistry 2016; 22:11587-92. [PMID: 27338119 DOI: 10.1002/chem.201602649] [Citation(s) in RCA: 69] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2016] [Indexed: 11/10/2022]
Abstract
Herein, we report the oxidative addition of aryldiazonium salts to ligand-supported gold(I) complexes under visible light photoredox conditions. This method provides experimental evidence for the involvement of such a process in dual gold/photoredox-catalyzed reactions and delivers well-defined (C,N)-cyclometalated gold(III) species. The remarkably mild reaction conditions and the ability to widely vary the ancillary ligand make this method a potentially powerful synthetic tool to access diverse gold(III) complexes for systematic studies into their properties and reactivity. Initial studies show that these species can undergo chloride abstraction to afford Lewis acidic dicationic gold(III) species.
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Affiliation(s)
- Adrian Tlahuext-Aca
- NRW Graduate School of Chemistry, Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Matthew N Hopkinson
- NRW Graduate School of Chemistry, Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Constantin G Daniliuc
- NRW Graduate School of Chemistry, Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany
| | - Frank Glorius
- NRW Graduate School of Chemistry, Organisch-Chemisches Institut, Westfälische Wilhelms-Universität Münster, Corrensstraße 40, 48149, Münster, Germany.
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27
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Abstract
An axially chiral, cyclic borane decorated with just one C6F5 group at the boron atom promotes the highly enantioselective hydrosilylation of acetophenone derivatives without assistance of an additional Lewis base (up to 99% ee). The reaction is an unprecedented asymmetric variant of Piers' B(C6F5)3-catalyzed carbonyl hydrosilylation. The steric congestion imparted by the 3,3'-disubstituted binaphthyl backbone of the borane catalyst as well as the use of reactive trihydrosilanes as reducing agents are keys to success.
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Affiliation(s)
- Lars Süsse
- Institut für Chemie, Technische Universität Berlin , Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Julia Hermeke
- Institut für Chemie, Technische Universität Berlin , Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin , Strasse des 17. Juni 115, 10623 Berlin, Germany
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28
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Affiliation(s)
- Douglas W. Stephan
- Department of Chemistry, University of Toronto, 80 St. George
Street, Toronto, Ontario, Canada M5S 3H6
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29
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Oestreich M, Hermeke J, Mohr J. A unified survey of Si-H and H-H bond activation catalysed by electron-deficient boranes. Chem Soc Rev 2015; 44:2202-20. [PMID: 25679769 DOI: 10.1039/c4cs00451e] [Citation(s) in RCA: 392] [Impact Index Per Article: 43.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The bond activation chemistry of B(C6F5)3 and related electron-deficient boranes is currently experiencing a renaissance due to the fascinating development of frustrated Lewis pairs (FLPs). B(C6F5)3's ability to catalytically activate Si-H bonds through η(1) coordination opened the door to several unique reduction processes. The ground-breaking finding that the same family of fully or partially fluorinated boron Lewis acids allows for the related H-H bond activation, either alone or as a component of an FLP, brought considerable momentum into the area of transition-metal-free hydrogenation and, likewise, hydrosilylation. This review comprehensively summarises synthetic methods involving borane-catalysed Si-H and H-H bond activation. Systems corresponding to an FLP-type situation are not covered. Aside from the broad manifold of C=X bond reductions and C=X/C-X defunctionalisations, dehydrogenative (oxidative) Si-H couplings are also included.
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Affiliation(s)
- Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 115, D-10623 Berlin, Germany.
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30
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Stephan DW, Erker G. Chemie frustrierter Lewis-Paare: Entwicklung und Perspektiven. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409800] [Citation(s) in RCA: 481] [Impact Index Per Article: 53.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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31
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Stephan DW, Erker G. Frustrated Lewis pair chemistry: development and perspectives. Angew Chem Int Ed Engl 2015; 54:6400-41. [PMID: 25974714 DOI: 10.1002/anie.201409800] [Citation(s) in RCA: 1298] [Impact Index Per Article: 144.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/20/2014] [Indexed: 12/17/2022]
Abstract
Frustrated Lewis pairs (FLPs) are combinations of Lewis acids and Lewis bases in solution that are deterred from strong adduct formation by steric and/or electronic factors. This opens pathways to novel cooperative reactions with added substrates. Small-molecule binding and activation by FLPs has led to the discovery of a variety of new reactions through unprecedented pathways. Hydrogen activation and subsequent manipulation in metal-free catalytic hydrogenations is a frequently observed feature of many FLPs. The current state of this young but rapidly expanding field is outlined in this Review and the future directions for its broadening sphere of impact are considered.
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Affiliation(s)
- Douglas W Stephan
- Department of Chemistry, University of Toronto, 80 St. George St, Toronto, Ontario M5S3H6 (Canada).
| | - Gerhard Erker
- Organisch Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstr. 40, 48149 Münster (Germany).
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32
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Heiden ZM, Lathem AP. Establishing the Hydride Donor Abilities of Main Group Hydrides. Organometallics 2015. [DOI: 10.1021/om5011512] [Citation(s) in RCA: 136] [Impact Index Per Article: 15.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Zachariah M. Heiden
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
| | - A. Paige Lathem
- Department of Chemistry, Washington State University, Pullman, Washington 99164, United States
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33
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Lathem AP, Treich NR, Heiden ZM. Establishing the Steric Bulk of Main Group Hydrides in Reduction Reactions. Isr J Chem 2015. [DOI: 10.1002/ijch.201400137] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Ren X, Li G, Wei S, Du H. Facile Development of Chiral Alkenylboranes from Chiral Diynes for Asymmetric Hydrogenation of Silyl Enol Ethers. Org Lett 2015; 17:990-3. [DOI: 10.1021/acs.orglett.5b00085] [Citation(s) in RCA: 60] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Xiaoyu Ren
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Gen Li
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Simin Wei
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Haifeng Du
- Beijing National Laboratory
for Molecular Sciences, CAS Key Laboratory of Molecular Recognition
and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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35
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Keess S, Simonneau A, Oestreich M. Direct and Transfer Hydrosilylation Reactions Catalyzed by Fully or Partially Fluorinated Triarylboranes: A Systematic Study. Organometallics 2015. [DOI: 10.1021/om501284a] [Citation(s) in RCA: 73] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Sebastian Keess
- Institut
für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 115, 10623 Berlin, Germany
| | - Antoine Simonneau
- Institut
für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut
für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 115, 10623 Berlin, Germany
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36
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Eisenberger P, Bestvater BP, Keske EC, Crudden CM. Hydrogenations at Room Temperature and Atmospheric Pressure with Mesoionic Carbene-Stabilized Borenium Catalysts. Angew Chem Int Ed Engl 2015; 54:2467-71. [DOI: 10.1002/anie.201409250] [Citation(s) in RCA: 128] [Impact Index Per Article: 14.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2014] [Indexed: 11/08/2022]
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37
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Eisenberger P, Bestvater BP, Keske EC, Crudden CM. Hydrogenations at Room Temperature and Atmospheric Pressure with Mesoionic Carbene-Stabilized Borenium Catalysts. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201409250] [Citation(s) in RCA: 37] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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38
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Abstract
This Perspective article reviews the recent developments in reduction reactions catalysed by main-group element compounds.
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Affiliation(s)
- K. Revunova
- Chemistry Department
- Brock University
- Ontario
- Canada
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39
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Nödling AR, Jakab G, Schreiner PR, Hilt G. 31P NMR Spectroscopically Quantified Hydrogen-Bonding Strength of Thioureas and Their Catalytic Activity in Diels-Alder Reactions. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402871] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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40
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Hermeke J, Mewald M, Irran E, Oestreich M. Chemoselective Tin–Boron Exchange Aided by the Use of Dummy Ligands at the Tin Atom. Organometallics 2014. [DOI: 10.1021/om500851r] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julia Hermeke
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Marius Mewald
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Elisabeth Irran
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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41
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Chakraborty S, Blacque O, Fox T, Berke H. Trisphosphine-Chelate-Substituted Molybdenum and Tungsten Nitrosyl Hydrides as Highly Active Catalysts for Olefin Hydrogenations. Chemistry 2014; 20:12641-54. [PMID: 25125283 DOI: 10.1002/chem.201402736] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2014] [Revised: 05/20/2014] [Indexed: 11/12/2022]
Affiliation(s)
- Subrata Chakraborty
- Department of Chemistry, University of Zürich, Winterthurerstrasse 190, 8057 Zürich (Switzerland)
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42
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43
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Chen J, Lalancette RA, Jäkle F. Chiral Organoborane Lewis Pairs Derived from Pyridylferrocene. Chemistry 2014; 20:9120-9. [DOI: 10.1002/chem.201400057] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/07/2014] [Revised: 04/08/2014] [Indexed: 11/12/2022]
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44
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Bentivegna B, Mariani CI, Smith JR, Ma S, Rheingold AL, Brunker TJ. Formation, Stability, and Structures of Borenium and Boronium Cations Derived from Pentamethylazaferrocene–Boranes by Hydride or Chloride Abstraction Reactions. Organometallics 2014. [DOI: 10.1021/om500348u] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- BriAnne Bentivegna
- Department of Chemistry,
Jess and Mildred Fisher
College of Science and Mathematics, Towson University, 8000 York
Road, Towson, Maryland 21252, United States
| | - Christine I. Mariani
- Department of Chemistry,
Jess and Mildred Fisher
College of Science and Mathematics, Towson University, 8000 York
Road, Towson, Maryland 21252, United States
| | - Jason R. Smith
- Department of Chemistry,
Jess and Mildred Fisher
College of Science and Mathematics, Towson University, 8000 York
Road, Towson, Maryland 21252, United States
| | - Shuhua Ma
- Department of Chemistry,
Jess and Mildred Fisher
College of Science and Mathematics, Towson University, 8000 York
Road, Towson, Maryland 21252, United States
| | - Arnold L. Rheingold
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093-0358, United States
| | - Tim J. Brunker
- Department of Chemistry,
Jess and Mildred Fisher
College of Science and Mathematics, Towson University, 8000 York
Road, Towson, Maryland 21252, United States
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45
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Mohr J, Durmaz M, Irran E, Oestreich M. Tris(5,6,7,8-tetrafluoronaphthalen-2-yl)borane, a Partially Fluorinated Boron Lewis Acid with Fluorination Distal to the Boron Atom. Organometallics 2014. [DOI: 10.1021/om500128a] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jens Mohr
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Mustafa Durmaz
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Elisabeth Irran
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623 Berlin, Germany
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46
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Simonneau A, Friebel J, Oestreich M. Salt-Free Preparation of Trimethylsilyl Ethers by B(C6F5)3-Catalyzed Transfer Silylation by Using a Me3SiH Surrogate. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301840] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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47
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Hermeke J, Mewald M, Oestreich M. Experimental Analysis of the Catalytic Cycle of the Borane-Promoted Imine Reduction with Hydrosilanes: Spectroscopic Detection of Unexpected Intermediates and a Refined Mechanism. J Am Chem Soc 2013; 135:17537-46. [DOI: 10.1021/ja409344w] [Citation(s) in RCA: 153] [Impact Index Per Article: 13.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Julia Hermeke
- Institut
für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 115, 10623 Berlin, Germany
| | - Marius Mewald
- Institut
für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 115, 10623 Berlin, Germany
| | - Martin Oestreich
- Institut
für Chemie, Technische Universität Berlin, Strasse des 17.
Juni 115, 10623 Berlin, Germany
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48
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Liu Y, Du H. Chiral Dienes as “Ligands” for Borane-Catalyzed Metal-Free Asymmetric Hydrogenation of Imines. J Am Chem Soc 2013; 135:6810-3. [DOI: 10.1021/ja4025808] [Citation(s) in RCA: 184] [Impact Index Per Article: 16.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Yongbing Liu
- Beijing National Laboratory for
Molecular Sciences,
CAS Key Laboratory of Molecular Recognition and Function, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
| | - Haifeng Du
- Beijing National Laboratory for
Molecular Sciences,
CAS Key Laboratory of Molecular Recognition and Function, Institute
of Chemistry, Chinese Academy of Sciences, Beijing 100190, China
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49
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Jiang Y, Schirmer B, Blacque O, Fox T, Grimme S, Berke H. The “Catalytic Nitrosyl Effect”: NO Bending Boosting the Efficiency of Rhenium Based Alkene Hydrogenations. J Am Chem Soc 2013; 135:4088-102. [DOI: 10.1021/ja400135d] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yanfeng Jiang
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse
190, CH-8037, Zürich, Switzerland
| | - Birgitta Schirmer
- Organisch-Chemisches Institut, Universität Münster, Corrensstrasse 40,
48149 Münster, Germany
| | - Olivier Blacque
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse
190, CH-8037, Zürich, Switzerland
| | - Thomas Fox
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse
190, CH-8037, Zürich, Switzerland
| | - Stefan Grimme
- Mulliken Center for Theoretical
Chemistry, Institut für Physikalische und Theoretische Chemie, Universität Bonn, Beringstrasse 4, D-53115 Bonn,
Germany
| | - Heinz Berke
- Anorganisch-Chemisches Institut, Universität Zürich, Winterthurerstrasse
190, CH-8037, Zürich, Switzerland
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50
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Chen J, Lalancette RA, Jäkle F. Synthesis and Lewis acid properties of a ferrocene-based planar-chiral borenium cation. Chem Commun (Camb) 2013; 49:4893-5. [DOI: 10.1039/c3cc41556b] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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