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Kanale VV, Uyeda C. Catalytic Asymmetric Ring-Opening Reactions of Unstrained Heterocycles Using Cobalt Vinylidenes. Angew Chem Int Ed Engl 2023; 62:e202309681. [PMID: 37656431 PMCID: PMC10591978 DOI: 10.1002/anie.202309681] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2023] [Revised: 08/09/2023] [Accepted: 08/30/2023] [Indexed: 09/02/2023]
Abstract
Cobalt catalysts promote highly enantioselective ring-opening reactions of 2,5-dihydrofurans using vinylidenes. The products are acyclic organozinc compounds that can be functionalized with an electrophile. The proposed mechanism involves the generation of a cobalt vinylidene species that adds to the alkene by a [2+2]-cycloaddition pathway. Ring-opening then occurs via outer-sphere β-O elimination assisted by coordination of a ZnX2 Lewis acid to the alkoxide leaving group. DFT models reveal that competing inner-sphere syn β-H and β-O elimination pathways are suppressed by the geometric constraints of the metallacycle intermediate. These models rationalize the observed stereochemical outcome of the reaction.
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Affiliation(s)
- Vibha V Kanale
- Chemistry Department, Purdue University, 560 Oval Dr., West Lafayette, IN 47907, USA
| | - Christopher Uyeda
- Chemistry Department, Purdue University, 560 Oval Dr., West Lafayette, IN 47907, USA
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2
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Matt C, Orthaber A, Streuff J. Catalytic Asymmetric β‐Oxygen Elimination**. Angew Chem Int Ed Engl 2022; 61:e202114044. [PMID: 35263503 PMCID: PMC9314826 DOI: 10.1002/anie.202114044] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2021] [Indexed: 12/14/2022]
Abstract
A catalytic enantioselective β‐O‐elimination reaction is reported in the form of a zirconium‐catalyzed asymmetric opening of meso‐ketene acetals. Furthermore, a regiodivergent β‐O‐elimination is demonstrated. The reaction proceeds under mild conditions, at low catalyst loadings, and produces chiral monoprotected cis‐1,2‐diols in good yield and enantiomeric excess. The combination with a Mitsunobu reaction or a one‐pot hydroboration/Suzuki reaction sequence then gives access to additional diol and aminoalcohol building blocks. A stereochemical analysis supported by DFT calculations reveals that a high selectivity in the hydrozirconation step is also important for achieving high enantioselectivity, although it does not constitute the asymmetric step. This insight is crucial for the future development of related asymmetric β‐elimination reactions.
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Affiliation(s)
- Christof Matt
- Department of Chemistry—BMC Uppsala University Husargatan 3 75237 Uppsala Sweden
- Institut für Organische Chemie Albert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg im Breisgau Germany
| | - Andreas Orthaber
- Department of Chemistry—Ångström Laboratory Uppsala University Lägerhyddsvägen 1 75237 Uppsala Sweden
| | - Jan Streuff
- Department of Chemistry—BMC Uppsala University Husargatan 3 75237 Uppsala Sweden
- Institut für Organische Chemie Albert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg im Breisgau Germany
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3
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Matt C, Orthaber A, Streuff J. Catalytic Asymmetric β‐Oxygen Elimination**. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202114044] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Christof Matt
- Department of Chemistry—BMC Uppsala University Husargatan 3 75237 Uppsala Sweden
- Institut für Organische Chemie Albert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg im Breisgau Germany
| | - Andreas Orthaber
- Department of Chemistry—Ångström Laboratory Uppsala University Lägerhyddsvägen 1 75237 Uppsala Sweden
| | - Jan Streuff
- Department of Chemistry—BMC Uppsala University Husargatan 3 75237 Uppsala Sweden
- Institut für Organische Chemie Albert-Ludwigs-Universität Freiburg Albertstr. 21 79104 Freiburg im Breisgau Germany
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4
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Zhang C, Hu W, Lovinger GJ, Jin J, Chen J, Morken JP. Enantiomerically Enriched α-Borylzinc Reagents by Nickel-Catalyzed Carbozincation of Vinylboronic Esters. J Am Chem Soc 2021; 143:14189-14195. [PMID: 34425672 DOI: 10.1021/jacs.1c05274] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this paper is described a synthesis of enantiomerically enriched, configurationally stable organozinc reagents by catalytic enantioselective carbozincation of a vinylboronic ester. This process furnishes enantiomerically enriched α-borylzinc intermediates that are shown to undergo stereospecific reactions, producing enantioenriched secondary boronic ester products. The properties of the intermediate α-borylzinc reagent are probed and the synthetic utility of the products is demonstrated by application to the synthesis of (-)-aphanorphine and (-)-enterolactone.
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Affiliation(s)
- Chenlong Zhang
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Weipeng Hu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Gabriel J Lovinger
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Jing Jin
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - Jingjia Chen
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
| | - James P Morken
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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5
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Xing J, Zhu W, Ye B, Lu T, Hayashi T, Dou X. Rhodium-Catalyzed Diverse Arylation of 2,5-Dihydrofuran: Controllable Divergent Synthesis via Four Pathways. ACS Catal 2020. [DOI: 10.1021/acscatal.0c00265] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Junhao Xing
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Wanjiang Zhu
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Bihai Ye
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Tao Lu
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
| | - Tamio Hayashi
- Department of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore 637371, Singapore
| | - Xiaowei Dou
- Department of Chemistry and State Key Laboratory of Natural Medicines, China Pharmaceutical University, Nanjing 211198, China
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6
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Affiliation(s)
- Long Min
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xiaohong Lin
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chuang-Chuang Li
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
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7
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Matt C, Kölblin F, Streuff J. Reductive C–O, C–N, and C–S Cleavage by a Zirconium Catalyzed Hydrometalation/β-Elimination Approach. Org Lett 2019; 21:6983-6988. [DOI: 10.1021/acs.orglett.9b02572] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Christof Matt
- Albert-Ludwigs-Universität Freiburg, Institut für Organische Chemie, Albertstr. 21, 79104 Freiburg, Germany
| | - Frederic Kölblin
- Albert-Ludwigs-Universität Freiburg, Institut für Organische Chemie, Albertstr. 21, 79104 Freiburg, Germany
| | - Jan Streuff
- Albert-Ludwigs-Universität Freiburg, Institut für Organische Chemie, Albertstr. 21, 79104 Freiburg, Germany
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8
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Peng JB, Wu FP, Xu C, Qi X, Ying J, Wu XF. Nickel-Catalyzed Carbonylative Synthesis of Functionalized Alkyl Iodides. iScience 2018; 8:175-182. [PMID: 30321812 PMCID: PMC6197950 DOI: 10.1016/j.isci.2018.09.024] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2018] [Revised: 09/22/2018] [Accepted: 09/27/2018] [Indexed: 11/12/2022] Open
Abstract
Functionalized alkyl iodides are important compounds in organic chemistry and biology. In this communication, we developed an interesting nickel-catalyzed carbonylative synthesis of functionalized alkyl iodides from aryl iodides and ethers. With Mo(CO)6 as the solid CO source, both cyclic and acyclic ethers were activated, which is also a challenging topic in organic synthesis. Functionalized alkyl iodides were prepared in moderate to excellent yields with outstanding functional group tolerance. Besides the high value of the obtained products, all the atoms from the starting materials were incorporated in the final products and the reaction had high atom efficiency as well. Nickel-catalyzed carbonylative synthesis of functionalized alkyl iodides With Mo(CO)6 as the solid CO source, carbonylative ether activation Good yields of functionalized alkyl iodides
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Affiliation(s)
- Jin-Bao Peng
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Fu-Peng Wu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Cong Xu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Xinxin Qi
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Jun Ying
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People's Republic of China
| | - Xiao-Feng Wu
- Department of Chemistry, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, People's Republic of China; Leibniz-Institut für Katalyse e.V. an der Universität Rostock, Albert-Einstein-Straße 29a, Rostock 18059, Germany.
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9
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Shi Y, Hoveyda AH. Catalytic SN2'- and Enantioselective Allylic Substitution with a Diborylmethane Reagent and Application in Synthesis. Angew Chem Int Ed Engl 2016; 55:3455-8. [PMID: 26845488 PMCID: PMC4813298 DOI: 10.1002/anie.201600309] [Citation(s) in RCA: 99] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Indexed: 12/26/2022]
Abstract
A catalytic method for the site- and enantioselective addition of commercially available di-B(pin)-methane to allylic phosphates is introduced (pin=pinacolato). Transformations may be facilitated by an NHC-Cu complex (NHC=N-heterocyclic carbene) and products obtained in 63-95 % yield, 88:12 to >98:2 S(N)2'/S(N)2 selectivity, and 85:15-99:1 enantiomeric ratio. The utility of the approach, entailing the involvement of different catalytic cross-coupling processes, is highlighted by its application to the formal synthesis of the cytotoxic natural product rhopaloic acid A.
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Affiliation(s)
- Ying Shi
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA
| | - Amir H Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA, 02467, USA.
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10
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Shi Y, Hoveyda AH. Catalytic SN
2′- and Enantioselective Allylic Substitution with a Diborylmethane Reagent and Application in Synthesis. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201600309] [Citation(s) in RCA: 35] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Ying Shi
- Department of Chemistry; Merkert Chemistry Center; Boston College; Chestnut Hill MA 02467 USA
| | - Amir H. Hoveyda
- Department of Chemistry; Merkert Chemistry Center; Boston College; Chestnut Hill MA 02467 USA
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11
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Kutsumura N, Matsubara Y, Honjo T, Ohgiya T, Nishiyama S, Saito T. Total synthesis of (−)-5,6-seco-germacrane lactone. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.02.093] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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12
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Tollefson EJ, Dawson DD, Osborne CA, Jarvo ER. Stereospecific cross-coupling reactions of aryl-substituted tetrahydrofurans, tetrahydropyrans, and lactones. J Am Chem Soc 2014; 136:14951-8. [PMID: 25308512 PMCID: PMC4210078 DOI: 10.1021/ja5076426] [Citation(s) in RCA: 66] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The stereospecific ring-opening of O-heterocycles to provide acyclic alcohols and carboxylic acids with controlled formation of a new C-C bond is reported. These reactions provide new methods for synthesis of acyclic polyketide analogs with complex stereochemical arrays. Stereoselective synthesis of the cyclic template is utilized to control relative configuration; subsequent stereospecific nickel-catalyzed ring-opening affords the acyclic product. Aryl-substituted tetrahydrofurans and tetrahydropyrans undergo nickel-catalyzed Kumada-type coupling with a range of Grignard reagents to furnish acyclic alcohols with high diastereoselectivity. Enantioenriched lactones undergo Negishi-type cross-coupling with dimethylzinc to afford enantioenriched carboxylic acids. Application in a two-step enantioselective synthesis of an anti-dyslipidemia agent is demonstrated.
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Affiliation(s)
- Emily J Tollefson
- Department of Chemistry, University of California , Irvine, California 92697-2025, United States
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13
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Negishi EI. Magical power of transition metals: past, present, and future (Nobel Lecture). Angew Chem Int Ed Engl 2011; 50:6738-64. [PMID: 21717531 DOI: 10.1002/anie.201101380] [Citation(s) in RCA: 544] [Impact Index Per Article: 41.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2011] [Indexed: 11/08/2022]
Affiliation(s)
- Ei-ichi Negishi
- Herbert C. Brown Laboratories of Chemistry, Purdue University, 560 Oval Drive,West Lafayette, IN 47907-2084, USA
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14
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Negishi EI. Die magische Kraft der Übergangsmetalle: Vergangenheit, Gegenwart und Zukunft (Nobel-Aufsatz). Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101380] [Citation(s) in RCA: 173] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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15
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Highly Enantioselective Copper-Catalyzed Ring Opening of Oxabicyclic Alkenes with Grignard Reagents. Chem Asian J 2008; 3:2105-11. [DOI: 10.1002/asia.200800159] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Joosten A, Soueidan M, Denhez C, Harakat D, Hélion F, Namy JL, Vasse JL, Szymoniak J. Multimetallic Zirconocene-Based Catalysis: Alkyne Dimerization and Cyclotrimerization Reactions. Organometallics 2008. [DOI: 10.1021/om8002703] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Antoine Joosten
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 6229), Université de Reims, 51687 Reims Cedex 2, France, and Laboratoire de Catalyse Moléculaire, CNRS (UMR 8182), ICMMO, Bat 420, Université Paris-Sud, 91405 Orsay, France
| | - Mohamad Soueidan
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 6229), Université de Reims, 51687 Reims Cedex 2, France, and Laboratoire de Catalyse Moléculaire, CNRS (UMR 8182), ICMMO, Bat 420, Université Paris-Sud, 91405 Orsay, France
| | - Clément Denhez
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 6229), Université de Reims, 51687 Reims Cedex 2, France, and Laboratoire de Catalyse Moléculaire, CNRS (UMR 8182), ICMMO, Bat 420, Université Paris-Sud, 91405 Orsay, France
| | - Dominique Harakat
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 6229), Université de Reims, 51687 Reims Cedex 2, France, and Laboratoire de Catalyse Moléculaire, CNRS (UMR 8182), ICMMO, Bat 420, Université Paris-Sud, 91405 Orsay, France
| | - Florence Hélion
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 6229), Université de Reims, 51687 Reims Cedex 2, France, and Laboratoire de Catalyse Moléculaire, CNRS (UMR 8182), ICMMO, Bat 420, Université Paris-Sud, 91405 Orsay, France
| | - Jean-Louis Namy
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 6229), Université de Reims, 51687 Reims Cedex 2, France, and Laboratoire de Catalyse Moléculaire, CNRS (UMR 8182), ICMMO, Bat 420, Université Paris-Sud, 91405 Orsay, France
| | - Jean-Luc Vasse
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 6229), Université de Reims, 51687 Reims Cedex 2, France, and Laboratoire de Catalyse Moléculaire, CNRS (UMR 8182), ICMMO, Bat 420, Université Paris-Sud, 91405 Orsay, France
| | - Jan Szymoniak
- Institut de Chimie Moléculaire de Reims, CNRS (UMR 6229), Université de Reims, 51687 Reims Cedex 2, France, and Laboratoire de Catalyse Moléculaire, CNRS (UMR 8182), ICMMO, Bat 420, Université Paris-Sud, 91405 Orsay, France
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17
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Gott AL, Clarke AJ, Clarkson GJ, Munslow IJ, Wade AR, Scott P. Single Diastereomer Half-Sandwich Salicyloxazoline Complexes of Titanium and Zirconium. Organometallics 2008. [DOI: 10.1021/om8002027] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Andrew L. Gott
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, U.K
| | - Adam J. Clarke
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, U.K
| | - Guy J. Clarkson
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, U.K
| | - Ian J. Munslow
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, U.K
| | - Andrew R. Wade
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, U.K
| | - Peter Scott
- Department of Chemistry, University of Warwick, Gibbet Hill Road, Coventry, CV4 7AL, U.K
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18
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Fañanás FJ, Rodríguez F. Cross‐Coupling–Elimination Reactions Mediated or Catalyzed by Zirconium Complexes: A Valuable Tool in Organic Synthesis. European J Org Chem 2008. [DOI: 10.1002/ejoc.200700939] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Francisco J. Fañanás
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al C.S.I.C., Universidad de Oviedo, c/ Julián Clavería 8, 33006 Oviedo, Spain, Fax: +34‐985103446
| | - Félix Rodríguez
- Instituto Universitario de Química Organometálica “Enrique Moles”, Unidad Asociada al C.S.I.C., Universidad de Oviedo, c/ Julián Clavería 8, 33006 Oviedo, Spain, Fax: +34‐985103446
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19
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Reichard HA, Micalizio GC. A Site- and Stereoselective Intermolecular Alkene–Alkyne Coupling Process. Angew Chem Int Ed Engl 2007; 46:1440-3. [PMID: 17221894 DOI: 10.1002/anie.200603515] [Citation(s) in RCA: 55] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Holly A Reichard
- Department of Chemistry, Yale University, 225 Prospect Street, New Haven, CT 06520-8107, USA
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20
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Reichard H, Micalizio G. A Site- and Stereoselective Intermolecular Alkene–Alkyne Coupling Process. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200603515] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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21
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Negishi EI. Transition Metal-Catalyzed Organometallic Reactions that Have Revolutionized Organic Synthesis. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2007. [DOI: 10.1246/bcsj.80.233] [Citation(s) in RCA: 220] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Westmoreland I, Munslow IJ, Clarke AJ, Clarkson G, Scott P. Chiral Complexes of a New Diazaallyl Ligand: Group 4 Aminooxazolinates. Organometallics 2004. [DOI: 10.1021/om049518s] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Ian Westmoreland
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
| | - Ian J. Munslow
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
| | - Adam J. Clarke
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
| | - Guy Clarkson
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
| | - Peter Scott
- Department of Chemistry, University of Warwick, Coventry, CV4 7AL, U.K
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23
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Westmoreland I, Munslow IJ, O'Shaughness PN, Scott P. Chiral Titanium Bis(aminopyridinates) Based on a Biaryl Backbone. Organometallics 2003. [DOI: 10.1021/om030055k] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ian Westmoreland
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | - Ian J. Munslow
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
| | | | - Peter Scott
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, U.K
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25
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Degrado SJ, Adams JA, Hoveyda AH. Zr-catalyzed diastereo- and enantioselective diene cyclizations. An unexpected synthesis of chiral aldehydes. Inorganica Chim Acta 2003. [DOI: 10.1016/s0020-1693(02)01301-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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O'Shaughnessy PN, Gillespie KM, Morton C, Westmoreland I, Scott P. Chiral Biarylamido Complexes of Zirconium. Organometallics 2002. [DOI: 10.1021/om020471p] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | - Kevin M. Gillespie
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Colin Morton
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Ian Westmoreland
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
| | - Peter Scott
- Department of Chemistry, University of Warwick, Coventry CV4 7AL, United Kingdom
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27
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Catalytic Ring-Closing Metathesis and the Development of Enantioselective Processes. TOP ORGANOMETAL CHEM 2001. [DOI: 10.1007/3-540-69708-x_4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
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28
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29
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30
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Asano Y, Iida A, Tomioka K. Enantioselective conjugate additions of organolithiums to BHA enoates mediated by A chiral ligand. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)10366-5] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Harada S, Kiyono H, Nishio R, Taguchi T, Hanzawa Y, Shiro M. Complexation of Vinylcyclopropanes with Zirconocene−1-butene Complex: Application to the Stereocontrolled Synthesis of Steroidal Side Chains. J Org Chem 1997. [DOI: 10.1021/jo962064r] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Susumu Harada
- School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1, Horinouchi, Hachioji, Tokyo 192-03, Japan
| | - Hiromichi Kiyono
- School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1, Horinouchi, Hachioji, Tokyo 192-03, Japan
| | - Ryoko Nishio
- School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1, Horinouchi, Hachioji, Tokyo 192-03, Japan
| | - Takeo Taguchi
- School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1, Horinouchi, Hachioji, Tokyo 192-03, Japan
| | - Yuji Hanzawa
- School of Pharmacy, Tokyo University of Pharmacy and Life Science, 1432-1, Horinouchi, Hachioji, Tokyo 192-03, Japan
| | - Motoo Shiro
- Rigaku Corporation, Matsubara-cho 3-9-12, Akishima, Tokyo 196, Japan
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Montgomery J, Oblinger E, Savchenko AV. Nickel-Catalyzed Organozinc-Promoted Carbocyclizations of Electron-Deficient Alkenes with Tethered Unsaturation. J Am Chem Soc 1997. [DOI: 10.1021/ja9702125] [Citation(s) in RCA: 118] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- John Montgomery
- Contribution from the Department of Chemistry, Wayne State University, Detroit, Michigan 48202-3489
| | - Eric Oblinger
- Contribution from the Department of Chemistry, Wayne State University, Detroit, Michigan 48202-3489
| | - Alexey V. Savchenko
- Contribution from the Department of Chemistry, Wayne State University, Detroit, Michigan 48202-3489
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Habaue S, Sakamoto H, Okamoto Y. Chiral Ethylenebis(4,5,6,7-tetrahydro-1-indenyl)zirconium 2,2′-Biphenolate. Separation and Application to Asymmetric Polymerization. Polym J 1997. [DOI: 10.1295/polymj.29.384] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Gladysz JA, Boone BJ. Chirale Erkennung in π-Komplexen von Alkenen, Aldehyden und Ketonen mit Übergangsmetall-Lewis-Säuren; Entwicklung eines allgemeinen Modells für enantiofaciale Komplexierungsselektivitäten. Angew Chem Int Ed Engl 1997. [DOI: 10.1002/ange.19971090604] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Thiele S, Erker G. Adjusting the Features of Active Metallocene Ziegler Systems fot Their Potential Use as Carbon–Carbon Coupling Catalysts in Organic Synthesis. ACTA ACUST UNITED AC 1997. [DOI: 10.1002/cber.19971300210] [Citation(s) in RCA: 30] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Paquette LA, Bzowej EI, Kreuzholz R. Optically Pure C2-Symmetric Transition Metal Complexes. Steric Consequences of Flanking the Cyclopentadienyl Anion with a Pair of Bridged Bicyclic Terpene-Derived Hydrocarbon Subunits. Organometallics 1996. [DOI: 10.1021/om960391j] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Leo A. Paquette
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
| | - Eugene I. Bzowej
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
| | - Rüdiger Kreuzholz
- Evans Chemical Laboratories, The Ohio State University, Columbus, Ohio 43210
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Hoveyda AH, Morken JP. Chirale ebthi-Titan- und -Zirconiumkomplexe als Reagentien und Katalysatoren für die enantioselektive C-C- und C-H-Verknüpfung. Angew Chem Int Ed Engl 1996. [DOI: 10.1002/ange.19961081205] [Citation(s) in RCA: 60] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Habaue S, Sakamoto H, Okamoto Y. Optical Resolution of Chiral Ethylenebis(4,5,6,7-tetrahydro-1-indenyl)zirconium Derivatives by High-Performance Liquid Chromatography. CHEM LETT 1996. [DOI: 10.1246/cl.1996.383] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Kanai M, Muraoka A, Tanaka T, Sawada M, Ikota N, Tomioka K. Conformational preference and diastereoselectivity of (S)-N-(α,β-unsaturated carbonyl)-γ-trityloxymethyl-γ-butyrolactam. Tetrahedron Lett 1995. [DOI: 10.1016/0040-4039(95)02025-k] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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