51
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Liu YL, Kehr G, Daniliuc CG, Erker G. Metal-Free Arene and Heteroarene Borylation Catalyzed by Strongly Electrophilic Bis-boranes. Chemistry 2017; 23:12141-12144. [DOI: 10.1002/chem.201701771] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2017] [Indexed: 02/04/2023]
Affiliation(s)
- Yun-Lin Liu
- Organisch-Chemisches Institut; Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Gerald Kehr
- Organisch-Chemisches Institut; Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Constantin G. Daniliuc
- Organisch-Chemisches Institut; Universität Münster; Corrensstr. 40 48149 Münster Germany
| | - Gerhard Erker
- Organisch-Chemisches Institut; Universität Münster; Corrensstr. 40 48149 Münster Germany
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52
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Yin Q, Klare HFT, Oestreich M. Catalytic Friedel-Crafts C-H Borylation of Electron-Rich Arenes: Dramatic Rate Acceleration by Added Alkenes. Angew Chem Int Ed Engl 2017; 56:3712-3717. [PMID: 28244623 DOI: 10.1002/anie.201611536] [Citation(s) in RCA: 89] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/25/2016] [Indexed: 01/05/2023]
Abstract
In the electrophilic C-H borylation of electron-rich aromatic compounds with catecholborane, the catalytic generation of the boron electrophile is initiated by heterolysis of the B-H bond by various Lewis and Brønsted acids, with a boronium ion formed exclusively. After ligand dissociation, the corresponding borenium ion undergoes regioselective electrophilic aromatic substitution on aniline derivatives as well as nitrogen-containing heterocycles. The catalysis is optimized using B(C6 F5 )3 as the initiator and proceeds without the addition of an external base or dihydrogen acceptor. Temperatures above 80 °C are generally required to secure efficient turnover in these Friedel-Crafts-type reactions. Mechanistic experiments reveal that regeneration of the boronium/borenium ion with dihydrogen release is rate-determining. This finding finally led to the discovery that, with added alkenes, catalytic C-H borylations can, for the first time, be carried out at room temperature.
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Affiliation(s)
- Qin Yin
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Hendrik F T Klare
- 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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53
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Yin Q, Klare HFT, Oestreich M. Katalytische Friedel‐Crafts‐C‐H‐Borylierung elektronenreicher Arene: starke Reaktionsbeschleunigung durch Versetzen mit Alkenen. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611536] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Qin Yin
- Institut für Chemie Technische Universität Berlin Straße des 17. Juni 115 10623 Berlin Deutschland
| | - Hendrik F. T. Klare
- 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
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54
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Bisai MK, Pahar S, Das T, Vanka K, Sen SS. Transition metal free catalytic hydroboration of aldehydes and aldimines by amidinato silane. Dalton Trans 2017; 46:2420-2424. [DOI: 10.1039/c6dt04893e] [Citation(s) in RCA: 62] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Benz-amidinato dichlorosilane [PhC(NtBu)2SiHCl2] has been reported to catalyze hydroboration of aldehydes at room temperature and aldimines under slightly harsh conditions.
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Affiliation(s)
- Milan Kumar Bisai
- Inorganic Chemistry and Catalysis Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Sanjukta Pahar
- Inorganic Chemistry and Catalysis Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Tamal Das
- Physical and Material Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Kumar Vanka
- Physical and Material Chemistry Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
| | - Sakya S. Sen
- Inorganic Chemistry and Catalysis Division
- CSIR-National Chemical Laboratory
- Pune 411008
- India
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55
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Ogawa T, Ruddy AJ, Sydora OL, Stradiotto M, Turculet L. Cobalt- and Iron-Catalyzed Isomerization–Hydroboration of Branched Alkenes: Terminal Hydroboration with Pinacolborane and 1,3,2-Diazaborolanes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00823] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Takahiko Ogawa
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Adam J. Ruddy
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Orson L. Sydora
- Research
and Technology, Chevron Phillips Chemical LP, 1862 Kingwood Drive, Kingwood, Texas 77339, United States
| | - Mark Stradiotto
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. 15000, Halifax, Nova Scotia B3H 4R2, Canada
| | - Laura Turculet
- Department
of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. 15000, Halifax, Nova Scotia B3H 4R2, Canada
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56
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Kerchner HA, Montgomery J. Synthesis of Secondary and Tertiary Alkylboranes via Formal Hydroboration of Terminal and 1,1-Disubstituted Alkenes. Org Lett 2016; 18:5760-5763. [PMID: 27786484 PMCID: PMC5189986 DOI: 10.1021/acs.orglett.6b03090] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Copper-catalyzed functionalization of terminal or 1,1-disubstituted alkenes with bis(pinacolato)diboron and methanol provides formal hydroboration products with exceptional regiocontrol favoring the branched isomer. Pairing this procedure with photocatalytic cross-couplings using iridium and nickel cocatalysis provides an effective, highly regioselective procedure for the hydroarylation of terminal alkenes.
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Affiliation(s)
- Hilary A. Kerchner
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
| | - John Montgomery
- Department of Chemistry, University of Michigan, 930 N. University Ave., Ann Arbor, MI, 48109-1055, USA
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57
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Touney EE, Van Hoveln R, Buttke CT, Freidberg MD, Guzei IA, Schomaker JM. Heteroleptic Nickel Complexes for the Markovnikov-Selective Hydroboration of Styrenes. Organometallics 2016. [DOI: 10.1021/acs.organomet.6b00652] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Eric E. Touney
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Ryan Van Hoveln
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Carl T. Buttke
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Michael D. Freidberg
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Ilia A. Guzei
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
| | - Jennifer M. Schomaker
- Department of Chemistry, University of Wisconsin, Madison, Wisconsin 53706, United States
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58
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Yin Q, Kemper S, Klare HFT, Oestreich M. Boron Lewis Acid-Catalyzed Hydroboration of Alkenes with Pinacolborane: BAr F3 Does What B(C 6 F 5 ) 3 Cannot Do! Chemistry 2016; 22:13840-13844. [PMID: 27447683 DOI: 10.1002/chem.201603466] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Indexed: 11/06/2022]
Abstract
The transition-metal-free hydroboration of various alkenes with pinacolborane (HBpin) initiated by tris[3,5-bis(trifluoromethyl)phenyl]borane (BArF3 ) is reported. The choice of the boron Lewis acid is crucial as the more prominent boron Lewis acid tris(pentafluorophenyl)borane (B(C6 F5 )3 ) is reluctant to react. Unlike B(C6 F5 )3 , BArF3 is found to engage in substituent redistribution with HBpin, resulting in the formation of ArF Bpin and the electron-deficient diboranes [H2 BArF ]2 and [(ArF )(H)B(μ-H)2 BArF2 ]. These in situ-generated hydroboranes undergo regioselective hydroboration of styrene derivatives as well as aliphatic alkenes with cis diastereoselectivity. Another ligand metathesis of these adducts with HBpin subsequently affords the corresponding HBpin-derived anti-Markovnikov adducts. The reactive hydroboranes are regenerated in this step, thereby closing the catalytic cycle.
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Affiliation(s)
- Qin Yin
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Sebastian Kemper
- Institut für Chemie, Technische Universität Berlin, Strasse des 17. Juni 115, 10623, Berlin, Germany
| | - Hendrik F T Klare
- 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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59
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Vasseur A, Bruffaerts J, Marek I. Remote functionalization through alkene isomerization. Nat Chem 2016; 8:209-19. [DOI: 10.1038/nchem.2445] [Citation(s) in RCA: 372] [Impact Index Per Article: 46.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2015] [Accepted: 12/17/2015] [Indexed: 12/23/2022]
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60
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Zheng J, Fan X, Zhou B, Li ZH, Wang H. Tautomerization of 2,6-lutidines in the presence of B(C6F5)3 using catecholborane as a precatalyst. Chem Commun (Camb) 2016; 52:4655-8. [DOI: 10.1039/c6cc00347h] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The Lewis pair of 2,6-lutidine and B(C6F5)3 can undergo tautomerization to produce enamine B(C6F5)3 adducts when catecholborane is applied as a precatalyst.
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Affiliation(s)
- Junhao Zheng
- Collaborative Innovation Center of Chemistry for Energy Material
- Shanghai Key Laboratory of Molecular Catalysis
- Innovative Material
- Department of Chemistry
- Fudan University
| | - Xiaoting Fan
- Collaborative Innovation Center of Chemistry for Energy Material
- Shanghai Key Laboratory of Molecular Catalysis
- Innovative Material
- Department of Chemistry
- Fudan University
| | - Benyu Zhou
- Collaborative Innovation Center of Chemistry for Energy Material
- Shanghai Key Laboratory of Molecular Catalysis
- Innovative Material
- Department of Chemistry
- Fudan University
| | - Zhen Hua Li
- Collaborative Innovation Center of Chemistry for Energy Material
- Shanghai Key Laboratory of Molecular Catalysis
- Innovative Material
- Department of Chemistry
- Fudan University
| | - Huadong Wang
- Collaborative Innovation Center of Chemistry for Energy Material
- Shanghai Key Laboratory of Molecular Catalysis
- Innovative Material
- Department of Chemistry
- Fudan University
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61
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Arnold N, Mozo S, Paul U, Radius U, Braunschweig H. Aryldihydroborane Coordination to Iridium and Osmium Hydrido Complexes. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00788] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Nicole Arnold
- Institut für
Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Silvia Mozo
- Institut für
Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Ursula Paul
- Institut für
Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Udo Radius
- Institut für
Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
| | - Holger Braunschweig
- Institut für
Anorganische
Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg, Germany
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62
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Zheng J, Lin YJ, Wang H. Synthesis of 2-(lutidinyl)organoboranes and their reactivities against dihydrogen and pinacol borane. Dalton Trans 2015; 45:6088-93. [PMID: 26531673 DOI: 10.1039/c5dt03815d] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Two 2,4,6-tris(trifluoromethyl)phenyl-substituted 2-(lutidinyl)organoboranes (5a and 5b) were prepared. These complexes can function as intramolecular vicinal B/N frustrated Lewis pairs to heterolytically activate dihydrogen. When these complexes were treated with HBpin, two different reaction pathways took place. Whereas the reaction between 5a and HBpin affords a formal ligand-redistribution product, the reaction of 5b with HBpin leads to a dearomative dehydroborylation product.
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Affiliation(s)
- Junhao Zheng
- Department of Chemistry, Fudan University, Handan Rd, 220, Shanghai, 200433, China.
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63
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Affiliation(s)
- Verena Goldbach
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78464 Konstanz, Germany
| | - Philipp Roesle
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78464 Konstanz, Germany
| | - Stefan Mecking
- Chair of Chemical Materials Science, Department of Chemistry, University of Konstanz, 78464 Konstanz, Germany
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64
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Zheng J, Wang Y, Li ZH, Wang H. Application of a nucleophilic boryl complex in the frustrated Lewis pair: activation of H-H, B-H and C=C bonds with B(C6F5)3 and boryl-borate lithium. Chem Commun (Camb) 2015; 51:5505-8. [PMID: 25418573 DOI: 10.1039/c4cc07658c] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The frustrated Lewis pair comprised of B(C6F5)3 and a boryl-borate lithium salt Li[pinBB(Ph)pin] can efficiently activate dihydrogen, pinacolborane and ethylene at ambient temperature. Theoretical studies suggest that the nucleophilic sp(2) boryl moiety of Li[pinBB(Ph)pin] plays different roles in these reactions.
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Affiliation(s)
- Junhao Zheng
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Material, Department of Chemistry, Fudan University, Handan Rd. 220, Shanghai, 200433, China.
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65
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Ely RJ, Yu Z, Morken JP. Diastereoselective Ni-catalyzed 1,4-hydroboration of chiral dienols. Tetrahedron Lett 2015; 56:3402-3405. [PMID: 26028782 DOI: 10.1016/j.tetlet.2015.01.123] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
The Ni-catalyzed hydroboration of dienols occurs in a 1,4 fashion and delivers a syn-propionate motif in high diastereoselectivity and with a stereodefined trisubstituted crotylboronic ester. The boronic ester can be further manipulated to provide carbon-carbon or carbon-oxygen bonds.
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Affiliation(s)
- Robert J Ely
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467
| | - Zhiyong Yu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467
| | - James P Morken
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467
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66
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Liu Y, Zhou Y, Wang H, Qu J. FeCl2-catalyzed hydroboration of aryl alkenes with bis(pinacolato)diboron. RSC Adv 2015. [DOI: 10.1039/c5ra14869c] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022] Open
Abstract
Alkylboronates were synthesized by a ligand-free ferrous chloride catalyzed anti-Markovnikov hydroboration of un-activated aryl alkenes with bis(pinacolato)diboron.
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Affiliation(s)
- Yang Liu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Huan Wang
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals
- School of Pharmaceutical Science and Technology
- Dalian University of Technology
- Dalian 116024
- P. R. China
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67
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68
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Palmer WN, Diao T, Pappas I, Chirik PJ. High-Activity Cobalt Catalysts for Alkene Hydroboration with Electronically Responsive Terpyridine and α-Diimine Ligands. ACS Catal 2014. [DOI: 10.1021/cs501639r] [Citation(s) in RCA: 141] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- W. Neil Palmer
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Tianning Diao
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Iraklis Pappas
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Paul J. Chirik
- Department
of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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69
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Ruddy AJ, Sydora OL, Small BL, Stradiotto M, Turculet L. (N-phosphinoamidinate)cobalt-catalyzed hydroboration: alkene isomerization affords terminal selectivity. Chemistry 2014; 20:13918-22. [PMID: 25187346 DOI: 10.1002/chem.201403945] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2014] [Indexed: 11/07/2022]
Abstract
Herein we establish the utility of a three-coordinate (N-phosphinoamidinate)cobalt(amido) pre-catalyst that is capable of effecting challenging alkene isomerization/hydroboration processes at room temperature, leading to the selective terminal addition of the boron group.
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Affiliation(s)
- Adam J Ruddy
- Department of Chemistry, Dalhousie University, 6274 Coburg Road, P.O. Box 15000, Halifax, Nova Scotia B3H 4R2 (Canada)
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70
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Yang ZD, Pal R, Hoang GL, Zeng XC, Takacs JM. Mechanistic Insights into Carbonyl-Directed Rhodium-Catalyzed Hydroboration: ab Initio Study of a Cyclic γ,δ-Unsaturated Amide. ACS Catal 2014; 4:763-773. [PMID: 24804151 PMCID: PMC3985861 DOI: 10.1021/cs401023j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2013] [Revised: 01/19/2014] [Indexed: 12/15/2022]
Abstract
![]()
A two-point binding mechanism for
the cationic rhodium(I)-catalyzed
carbonyl-directed catalytic asymmetric hydroboration of a cyclic γ,δ-unsaturated
amide is investigated using density functional theory. Geometry optimizations
and harmonic frequency calculations for the model reaction are carried
out using the basis set 6-31+G** for C, O, P, B, N, and H and LANL2DZ
for Rh atoms. The Gibbs free energy of each species in THF solvent
is obtained based on the single-point energy computed using the PCM
model at the ECP28MWB/6-311+G(d,p) level plus the thermal correction
to Gibbs free energy by deducting translational entropy contribution.
The Rh-catalyzed reaction cycle involves the following sequence of
events: (1) chelation of the cyclic γ,δ-unsaturated amide
via alkene and carbonyl complexation in a model active catalytic species,
[Rh(L2)2S2]+, (2) oxidative
addition of pinacol borane (pinBH), (3) migratory insertion of the
alkene double bond into Rh–H (preferred pathway) or Rh–B
bond, (4) isomerization of the resulting intermediate, and finally,
(5) reductive elimination to form the B–C or H–C bond
with regeneration of the catalyst. Free energy profiles for potential
pathways leading to the major γ-borylated product are computed
and discussed in detail. The potential pathways considered include
(1) pathways proceeding via migratory insertion into the Rh–H
bond (pathways I, I-1, and I-2), (2) a potential pathway proceeding via migratory insertion into
the Rh–B bond (pathway II), and two potential
competing routes to a β-borylated byproduct (pathway III). The results find that the Rh–H migratory insertion pathway I-2, followed in sequence by an unanticipated isomerization
via amide rotation and reductive elimination, is the most favorable
reaction pathway. A secondary consequence of amide rotation is access
to a competing β-hydride elimination pathway. The pathways computed
in this study are supported by and help explain related experimental
results.
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Affiliation(s)
- Zhao-Di Yang
- Key Laboratory
of Green Chemical Engineering and Technology of College of Heilongjiang
Province, College of Chemical and Environmental Engineering, Harbin University of Science and Technology, Harbin 150040, People’s Republic of China
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Rhitankar Pal
- Department
of Chemistry, Yale University, New Haven, Connecticut 06518, United States
| | - Gia L. Hoang
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - Xiao Cheng Zeng
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
| | - James M. Takacs
- Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
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71
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Obligacion JV, Chirik PJ. Bis(imino)pyridine cobalt-catalyzed alkene isomerization-hydroboration: a strategy for remote hydrofunctionalization with terminal selectivity. J Am Chem Soc 2013; 135:19107-10. [PMID: 24328236 DOI: 10.1021/ja4108148] [Citation(s) in RCA: 285] [Impact Index Per Article: 25.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Bis(imino)pyridine cobalt methyl complexes are active for the catalytic hydroboration of terminal, geminal, disubstituted internal, tri- and tetrasubstituted alkenes using pinacolborane (HBPin). The most active cobalt catalyst was obtained by introducing a pyrrolidinyl substituent into the 4-position of the bis(imino)pyridine chelate, enabling the facile hydroboration of sterically hindered substrates such as 1-methylcyclohexene, α-pinene, and 2,3-dimethyl-2-butene. Notably, these hydroboration reactions proceed with high activity and anti-Markovnikov selectivity in neat substrates at 23 °C. With internal olefins, the cobalt catalyst places the boron substituent exclusively at the terminal positions of an alkyl chain, providing a convenient method for hydrofunctionalization of remote C-H bonds.
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Affiliation(s)
- Jennifer V Obligacion
- Department of Chemistry, Princeton University , Princeton, New Jersey 08544, United States
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72
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Obligacion JV, Chirik PJ. Highly Selective Bis(imino)pyridine Iron-Catalyzed Alkene Hydroboration. Org Lett 2013; 15:2680-3. [DOI: 10.1021/ol400990u] [Citation(s) in RCA: 165] [Impact Index Per Article: 15.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jennifer V. Obligacion
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, New Jersey 08544, United States
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73
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74
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Eisenberger P, Bailey AM, Crudden CM. Taking the F out of FLP: Simple Lewis Acid–Base Pairs for Mild Reductions with Neutral Boranes via Borenium Ion Catalysis. J Am Chem Soc 2012; 134:17384-7. [DOI: 10.1021/ja307374j] [Citation(s) in RCA: 169] [Impact Index Per Article: 14.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Patrick Eisenberger
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada
K7L 3N6
| | - Adrian M. Bailey
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada
K7L 3N6
| | - Cathleen M. Crudden
- Department of Chemistry, Queen’s University, 90 Bader Lane, Kingston, Ontario, Canada
K7L 3N6
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75
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76
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Mahatthananchai J, Dumas AM, Bode JW. Catalytic Selective Synthesis. Angew Chem Int Ed Engl 2012; 51:10954-90. [DOI: 10.1002/anie.201201787] [Citation(s) in RCA: 355] [Impact Index Per Article: 29.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2012] [Indexed: 11/08/2022]
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77
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Oderinde MS, Organ MG. Studies on the Mechanism of B(C6F5)3-Catalyzed Hydrostannylation of Propargylic Alcohol Derivatives. Angew Chem Int Ed Engl 2012; 51:9834-7. [DOI: 10.1002/anie.201204060] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2012] [Revised: 08/02/2012] [Indexed: 11/07/2022]
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78
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Oderinde MS, Organ MG. Studies on the Mechanism of B(C6F5)3-Catalyzed Hydrostannylation of Propargylic Alcohol Derivatives. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204060] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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79
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Joshi-Pangu A, Ma X, Diane M, Iqbal S, Kribs RJ, Huang R, Wang CY, Biscoe MR. Palladium-catalyzed borylation of primary alkyl bromides. J Org Chem 2012; 77:6629-33. [PMID: 22774861 PMCID: PMC3432578 DOI: 10.1021/jo301156e] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A mild Pd-catalyzed process for the borylation of alkyl bromides has been developed using bis(pinacolato)diboron as a boron source. This process accommodates the use of a wide range of functional groups on the alkyl bromide substrate. Primary bromides react with complete selectivity in the presence of a secondary bromide. The generality of this approach is demonstrated by its extension to the use of alkyl iodides and alkyl tosylates, as well as borylation reactions employing bis(neopentyl glycolato)diboron as the boron source.
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Affiliation(s)
- Amruta Joshi-Pangu
- Department of Chemistry, The City College of New York, 160 Convent Ave., New York, NY 10031
| | - Xinghua Ma
- Department of Chemistry, The City College of New York, 160 Convent Ave., New York, NY 10031
| | - Mohamed Diane
- Department of Chemistry, The City College of New York, 160 Convent Ave., New York, NY 10031
| | - Sidra Iqbal
- Department of Chemistry, The City College of New York, 160 Convent Ave., New York, NY 10031
| | - Robert J. Kribs
- Department of Chemistry, The City College of New York, 160 Convent Ave., New York, NY 10031
| | - Richard Huang
- Department of Chemistry, The City College of New York, 160 Convent Ave., New York, NY 10031
| | - Chao-Yuan Wang
- Department of Chemistry, The City College of New York, 160 Convent Ave., New York, NY 10031
| | - Mark R. Biscoe
- Department of Chemistry, The City College of New York, 160 Convent Ave., New York, NY 10031
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80
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De Vries TS, Prokofjevs A, Vedejs E. Cationic tricoordinate boron intermediates: borenium chemistry from the organic perspective. Chem Rev 2012; 112:4246-82. [PMID: 22519545 DOI: 10.1021/cr200133c] [Citation(s) in RCA: 256] [Impact Index Per Article: 21.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Timothy S De Vries
- Department of Chemistry, University of Michigan, Ann Arbor, 48109, United States
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81
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Photolysis of arene chromium tricarbonyl complexes in presence of amine–boranes: Observation of σ-borane complexes in solution. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2011.03.022] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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82
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Lee GM, Vogels CM, Decken A, Westcott SA. Iridium Phosphane Complexes Containing Arylspiroboronate Esters for the Hydroboration of Alkenes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201100057] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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83
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Smith SM, Takacs JM. Remarkable levels of enantioswitching in catalytic asymmetric hydroboration. Org Lett 2011; 12:4612-5. [PMID: 20863120 DOI: 10.1021/ol101932q] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
TADDOL-derived phosphites and phosphoramidites are effective ligands for rhodium-catalyzed asymmetric hydroborations of β,γ-unsaturated amides, achieving up to 99% ee. However, the sense of stereoinduction, R or S, is surprisingly dependent on rather subtle features of the ligand. For example, catalysts employing a TADDOL phenylphosphite and those using the closely related N-methylaniline-derived phosphoramidite of the same configuration give opposite enantiomers of the product. Those derived from optical antipodes give the same product with virtually the same enantioselectivity as illustrated above. The different stereochemical outcomes may reflect fundamental differences in catalyst structure, reactivity, or reaction mechanism.
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Affiliation(s)
- Sean M Smith
- Department of Chemistry, University of Nebraska-Lincoln, Lincoln, Nebraska 68588, USA
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84
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Schwalbe M, Dogutan DK, Stoian SA, Teets TS, Nocera DG. Xanthene-Modified and Hangman Iron Corroles. Inorg Chem 2011; 50:1368-77. [DOI: 10.1021/ic101943h] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Matthias Schwalbe
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Dilek K. Dogutan
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Sebastian A. Stoian
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
- Department of Chemistry, Carnegie Mellon University, 4400 Fifth Avenue, Pittsburgh, Pennsylvania 15213, United States
| | - Thomas S. Teets
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Daniel G. Nocera
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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85
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Boudreau J, Fontaine FG. Coordination of Ethylene to a Zwitterionic Rh(III) Half-Sandwich Complex: Influence of Ambiphilic Ligands on Reactivity. Organometallics 2011. [DOI: 10.1021/om1008428] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Josée Boudreau
- Département de Chimie, Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada, G1 V 0A6
| | - Frédéric-Georges Fontaine
- Département de Chimie, Université Laval, 1045 Avenue de la Médecine, Québec (Québec), Canada, G1 V 0A6
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86
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Bonnier C, Piers WE, Parvez. M. Isomeric Dipyrrinato and Dipyrromethanato Boranes. Organometallics 2011. [DOI: 10.1021/om1011038] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Catherine Bonnier
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada, T2N 1N4
| | - Warren E. Piers
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada, T2N 1N4
| | - Masood Parvez.
- Department of Chemistry, University of Calgary, 2500 University Drive NW, Calgary, Alberta, Canada, T2N 1N4
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87
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Del Grosso A, Singleton PJ, Muryn CA, Ingleson MJ. Pinacol Boronates by Direct Arene Borylation with Borenium Cations. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201006196] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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88
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Del Grosso A, Singleton PJ, Muryn CA, Ingleson MJ. Pinacol Boronates by Direct Arene Borylation with Borenium Cations. Angew Chem Int Ed Engl 2011; 50:2102-6. [DOI: 10.1002/anie.201006196] [Citation(s) in RCA: 172] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/03/2010] [Revised: 11/10/2010] [Indexed: 11/09/2022]
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89
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Smith SM, Uteuliyev M, Takacs JM. Catalytic asymmetric hydroboration of β,γ-unsaturated Weinreb amides: striking influence of the borane. Chem Commun (Camb) 2011; 47:7812-4. [DOI: 10.1039/c1cc11746g] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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90
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Hunter NM, Vogels CM, Decken A, Bell A, Westcott SA. [Cp*IrCl2]2 catalyzed hydroborations of alkenes using a bulky dioxaborocine. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2010.09.051] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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91
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César V, Lugan N, Lavigne G. Electronic tuning of a carbene center via remote chemical induction, and relevant effects in catalysis. Chemistry 2010; 16:11432-42. [PMID: 20821762 DOI: 10.1002/chem.201000870] [Citation(s) in RCA: 104] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
The present report develops the idea that an N-heterocyclic carbene incorporating a remote anionic functionality--here, a malonate group--as a backbone component of its heterocyclic framework, can be "post-functionalized" directly from its transition-metal complexes, upon simple addition of a variety of electrophiles interacting directly with the malonate group in the outer coordination sphere. From a palette of selected electrophilic reagents, it was thus possible to modulate the electronic donor properties of the carbene center over a rather broad range. Both the zwitterionic complex [Rh{malo-NHC}(cod)] and the cationic derivatives [Rh{malo-NHC(E)}(cod)](+) (where "malo-NHC(E)" represents the ligand modified by a selected electrophile "E") were used as pre-catalysts in two types of catalytic reactions, namely, the polymerization of phenylacetylene and the hydroboration of styrene. The results indicate that, in both cases, the zwitterionic species is by far the best catalyst, whereas a decrease in the ligand donicity induced by the added electrophile results in a concomitant reduction of catalytic activity. Apparent deviations to such a trend in the case of the hydroboration of styrene were rationalized in terms of an interaction between the reactive catecholborane substrate and the remote functionality of the N-heterocyclic carbene leading to an in situ modification of the nature of the active species. These observations serve as a useful basis to define the scope and limitations of the present conceptual approach in catalysis.
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Affiliation(s)
- Vincent César
- CNRS, LCC (Laboratoire de Chimie de Coordination), 205 route de Narbonne, 31077 Toulouse Cedex 4, France.
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92
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Melanson JA, Vogels CM, Decken A, Westcott SA. Catalytic hydroboration of vinylarenes using a zwitterionic arylspiroboronate ester iridium complex. INORG CHEM COMMUN 2010. [DOI: 10.1016/j.inoche.2010.07.044] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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93
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Mazet C, Gérard D. Highly regio- and enantioselective catalytic asymmetric hydroboration of α-substituted styrenyl derivatives. Chem Commun (Camb) 2010; 47:298-300. [PMID: 20697639 DOI: 10.1039/c0cc01547d] [Citation(s) in RCA: 78] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The catalytic asymmetric hydroboration of a variety of 1,1-disubstituted olefins has been achieved with excellent yields, perfect regioselectivity and in some cases, high levels of enantioselectivity using readily accessible iridium catalyst.
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Affiliation(s)
- Clément Mazet
- University of Geneva, Organic Chemistry Department, Quai Ernest Ansermet 30, 1211-Geneva, Switzerland.
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94
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Alcaraz G, Sabo-Etienne S. Coordination and Dehydrogenation of Amine-Boranes at Metal Centers. Angew Chem Int Ed Engl 2010; 49:7170-9. [DOI: 10.1002/anie.201000898] [Citation(s) in RCA: 226] [Impact Index Per Article: 16.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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95
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Alcaraz G, Sabo-Etienne S. Koordination und Dehydrierung von Amin-Boran-Addukten an Metallzentren. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201000898] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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