201
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Núñez-Zarur F, Solans-Monfort X, Pleixats R, Rodríguez-Santiago L, Sodupe M. DFT Study on the Recovery of Hoveyda-Grubbs-Type Catalyst Precursors in Enyne and Diene Ring-Closing Metathesis. Chemistry 2013; 19:14553-65. [DOI: 10.1002/chem.201301898] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/16/2013] [Indexed: 11/11/2022]
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202
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Matsuo T, Yoshida T, Fujii A, Kawahara K, Hirota S. Effect of Added Salt on Ring-Closing Metathesis Catalyzed by a Water-Soluble Hoveyda–Grubbs Type Complex To Form N-Containing Heterocycles in Aqueous Media. Organometallics 2013. [DOI: 10.1021/om4005302] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Takashi Matsuo
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Takefumi Yoshida
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Akira Fujii
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Keiya Kawahara
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
| | - Shun Hirota
- Graduate
School of Materials Science, Nara Institute of Science and Technology (NAIST), 8916-5 Takayama, Ikoma, Nara 630-0192, Japan
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203
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Chung WJ, Carlson JS, Bedke DK, Vanderwal CD. A synthesis of the chlorosulfolipid mytilipin A via a longest linear sequence of seven steps. Angew Chem Int Ed Engl 2013; 52:10052-5. [PMID: 23929596 PMCID: PMC3835569 DOI: 10.1002/anie.201304565] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2013] [Indexed: 11/07/2022]
Abstract
Magnificent seven: The chlorosulfolipid mytilipin A was synthesized in racemic form in seven steps and in enantioenriched form in eight steps. Key transformations include a highly diastereoselective bromoallylation of a sensitive α,β-dichloroaldehyde, a kinetic resolution of a vinyl epoxide, a convergent and highly Z-selective alkene cross-metathesis, and a chemoselective and diastereoselective dichlorination of a complex diene.
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Affiliation(s)
| | | | | | - Christopher D. Vanderwal
- Department of Chemistry, University of California, Irvine, 1102 Natural Sciences II, Irvine, CA 92697-2025, U.S.A. Homepage: http://www.chem.uci.edu/~cdv
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204
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Deraedt C, d'Halluin M, Astruc D. Metathesis Reactions: Recent Trends and Challenges. Eur J Inorg Chem 2013. [DOI: 10.1002/ejic.201300682] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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205
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Cannon JS, Grubbs RH. Alkene chemoselectivity in ruthenium-catalyzed Z-selective olefin metathesis. Angew Chem Int Ed Engl 2013; 52:9001-4. [PMID: 23832646 PMCID: PMC3826562 DOI: 10.1002/anie.201302724] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2013] [Revised: 05/10/2013] [Indexed: 11/06/2022]
Abstract
Chelated ruthenium catalysts have achieved highly chemoselective olefin metathesis reactions. Terminal and internal Z olefins were selectively reacted in the presence of internal E olefins. Products were produced in good yield and high stereoselectivity for formation of a new Z olefin. No products of metathesis with the internal E olefin were observed. Chemoselectivity for terminal olefins was also observed over both sterically hindered and electronically deactivated alkenes.
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Affiliation(s)
- Jeffrey S. Cannon
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125 (USA)
| | - Robert H. Grubbs
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125 (USA)
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206
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Chung WJ, Carlson JS, Bedke DK, Vanderwal CD. A Synthesis of the Chlorosulfolipid Mytilipin A via a Longest Linear Sequence of Seven Steps. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201304565] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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207
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Morandi B, Wickens ZK, Grubbs RH. Regioselective Wacker Oxidation of Internal Alkenes: Rapid Access to Functionalized Ketones Facilitated by Cross-Metathesis. Angew Chem Int Ed Engl 2013; 52:9751-4. [DOI: 10.1002/anie.201303587] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2013] [Revised: 06/09/2013] [Indexed: 11/06/2022]
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208
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Morandi B, Wickens ZK, Grubbs RH. Regioselective Wacker Oxidation of Internal Alkenes: Rapid Access to Functionalized Ketones Facilitated by Cross-Metathesis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201303587] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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209
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Bru M, Dehn R, Teles JH, Deuerlein S, Danz M, Müller IB, Limbach M. Ruthenium Carbenes Supported on Mesoporous Silicas as Highly Active and Selective Hybrid Catalysts for Olefin Metathesis Reactions under Continuous Flow. Chemistry 2013; 19:11661-71. [DOI: 10.1002/chem.201203893] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 05/28/2013] [Indexed: 11/08/2022]
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210
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Cao Y, Zhang SC, Zhang M, Shen GB, Zhu XQ. Determination of Thermodynamic Affinities of Various Polar Olefins as Hydride, Hydrogen Atom, and Electron Acceptors in Acetonitrile. J Org Chem 2013; 78:7154-68. [DOI: 10.1021/jo4010926] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Ying Cao
- The State Key Laboratory of Elemento-Organic Chemistry,
Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Song-Chen Zhang
- The State Key Laboratory of Elemento-Organic Chemistry,
Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Min Zhang
- The State Key Laboratory of Elemento-Organic Chemistry,
Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Guang-Bin Shen
- The State Key Laboratory of Elemento-Organic Chemistry,
Department of Chemistry, Nankai University, Tianjin 300071, China
| | - Xiao-Qing Zhu
- The State Key Laboratory of Elemento-Organic Chemistry,
Department of Chemistry, Nankai University, Tianjin 300071, China
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211
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Cannon JS, Grubbs RH. Alkene Chemoselectivity in Ruthenium-CatalyzedZ-Selective Olefin Metathesis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302724] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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212
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Khan RKM, Torker S, Hoveyda AH. Readily Accessible and Easily Modifiable Ru-Based Catalysts for Efficient and Z-Selective Ring-Opening Metathesis Polymerization and Ring-Opening/Cross-Metathesis. J Am Chem Soc 2013; 135:10258-61. [DOI: 10.1021/ja404208a] [Citation(s) in RCA: 171] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- R. Kashif M. Khan
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467,
United States
| | - Sebastian Torker
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467,
United States
| | - Amir H. Hoveyda
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467,
United States
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213
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Hartung J, Grubbs RH. Highly Z-selective and enantioselective ring-opening/cross-metathesis catalyzed by a resolved stereogenic-at-Ru complex. J Am Chem Soc 2013; 135:10183-5. [PMID: 23822901 DOI: 10.1021/ja4046422] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The synthesis of a ruthenium complex that catalyzes Z-selective (up to 98% Z) asymmetric ring-opening/cross-metathesis with high enantioselectivity (up to 95% ee) is reported. The synthesis of the catalyst features the resolution of a chelating N-heterocyclic carbene complex by ligand substitution with a chiral carboxylate.
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Affiliation(s)
- John Hartung
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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214
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Rosebrugh LE, Marx VM, Keitz BK, Grubbs RH. Synthesis of highly cis, syndiotactic polymers via ring-opening metathesis polymerization using ruthenium metathesis catalysts. J Am Chem Soc 2013; 135:10032-5. [PMID: 23782172 DOI: 10.1021/ja405559y] [Citation(s) in RCA: 81] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first example of ruthenium-mediated ring-opening metathesis polymerization generating highly cis, highly tactic polymers is reported. While the cis content varied from 62 to >95% depending on the monomer structure, many of the polymers synthesized displayed high tacticity (>95%). Polymerization of an enantiomerically pure 2,3-dicarboalkoxynorbornadiene revealed a syndiotactic microstructure.
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Affiliation(s)
- Lauren E Rosebrugh
- Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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215
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Mann TJ, Speed AWH, Schrock RR, Hoveyda AH. CatalyticZ-Selective Cross-Metathesis with Secondary Silyl- and Benzyl-Protected Allylic Ethers: Mechanistic Aspects and Applications to Natural Product Synthesis. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201302538] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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216
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Mann TJ, Speed AWH, Schrock RR, Hoveyda AH. Catalytic Z-selective cross-metathesis with secondary silyl- and benzyl-protected allylic ethers: mechanistic aspects and applications to natural product synthesis. Angew Chem Int Ed Engl 2013; 52:8395-400. [PMID: 23794384 DOI: 10.1002/anie.201302538] [Citation(s) in RCA: 50] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2013] [Revised: 05/07/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Tyler J Mann
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, MA 02467, USA
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217
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Bauer J, Braunschweig H, Damme A, Carlos JO, Kramer JHT, Radacki K, Shang R, Siedler E, Ye Q. Metathesis Reactions of a Manganese Borylene Complex with Polar Heteroatom–Carbon Double Bonds: A Pathway to Previously Inaccessible Carbene Complexes. J Am Chem Soc 2013; 135:8726-34. [DOI: 10.1021/ja403389w] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jürgen Bauer
- 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
| | - Alexander Damme
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg,
Germany
| | - Jose Oscar Carlos
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg,
Germany
| | | | - Krzysztof Radacki
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg,
Germany
| | - Rong Shang
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg,
Germany
| | - Eva Siedler
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg,
Germany
| | - Qing Ye
- Institut für Anorganische Chemie, Julius-Maximilians-Universität Würzburg, Am Hubland, 97074 Würzburg,
Germany
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218
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Kiesewetter ET, O'Brien RV, Meek SJ, Yu EC, Schrock RR, Hoveyda AH. Synthesis of Z-(pinacolato)allylboron and Z-(pinacolato)alkenylboron compounds through stereoselective catalytic cross-metathesis. J Am Chem Soc 2013; 135:6026-9. [PMID: 23586708 PMCID: PMC3649762 DOI: 10.1021/ja403188t] [Citation(s) in RCA: 111] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
The first examples of catalytic cross-metathesis (CM) reactions that furnish Z-(pinacolato)allylboron and Z-(pinacolato)alkenylboron compounds are disclosed. Products are generated with high Z selectivity by the use of a W-based monoaryloxide pyrrolide (MAP) complex (up to 91% yield and >98:2 Z:E). The more sterically demanding Z-alkenylboron species are obtained in the presence of Mo-based MAP complexes in up to 93% yield and 97% Z selectivity. Z-selective CM with 1,3-dienes and aryl olefins are reported for the first time. The utility of the approach, in combination with catalytic cross coupling, is demonstrated by a concise and stereoselective synthesis of anticancer agent combretastatin A-4.
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Affiliation(s)
- Elizabeth T. Kiesewetter
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Robert V. O'Brien
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Simon J. Meek
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Elsie C. Yu
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
| | - Richard R. Schrock
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139
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219
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Gerber LCH, Schrock RR, Müller P. Molybdenum and Tungsten Monoalkoxide Pyrrolide (MAP) Alkylidene Complexes That Contain a 2,6-Dimesitylphenylimido Ligand. Organometallics 2013. [DOI: 10.1021/om4000693] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Laura C. H. Gerber
- Department of Chemistry
6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Richard R. Schrock
- Department of Chemistry
6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Peter Müller
- Department of Chemistry
6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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220
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Miyazaki H, Herbert MB, Liu P, Dong X, Xu X, Keitz BK, Ung T, Mkrtumyan G, Houk KN, Grubbs RH. Z-Selective ethenolysis with a ruthenium metathesis catalyst: experiment and theory. J Am Chem Soc 2013; 135:5848-58. [PMID: 23547887 DOI: 10.1021/ja4010267] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The Z-selective ethenolysis activity of chelated ruthenium metathesis catalysts was investigated with experiment and theory. A five-membered chelated catalyst that was successfully employed in Z-selective cross metathesis reactions has now been found to be highly active for Z-selective ethenolysis at low ethylene pressures, while tolerating a wide variety of functional groups. This phenomenon also affects its activity in cross metathesis reactions and prohibits crossover reactions of internal olefins via trisubstituted ruthenacyclobutane intermediates. In contrast, a related catalyst containing a six-membered chelated architecture is not active for ethenolysis and seems to react through different pathways more reminiscent of previous generations of ruthenium catalysts. Computational investigations of the effects of substitution on relevant transition states and ruthenacyclobutane intermediates revealed that the differences of activities are attributed to the steric repulsions of the anionic ligand with the chelating groups.
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Affiliation(s)
- Hiroshi Miyazaki
- Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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221
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Occhipinti G, Hansen FR, Törnroos KW, Jensen VR. Simple and Highly Z-Selective Ruthenium-Based Olefin Metathesis Catalyst. J Am Chem Soc 2013; 135:3331-4. [DOI: 10.1021/ja311505v] [Citation(s) in RCA: 125] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Giovanni Occhipinti
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Fredrik R. Hansen
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Karl W. Törnroos
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
| | - Vidar R. Jensen
- Department of Chemistry, University of Bergen, Allégaten 41, N-5007 Bergen, Norway
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222
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Reactivity of terminal phenylpentenes in a ruthenium-catalyzed cross-metathesis reaction: construction of linear bifunctional C-8 alkenes. MONATSHEFTE FUR CHEMIE 2013. [DOI: 10.1007/s00706-012-0905-3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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223
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224
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225
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Nelson DJ, Queval P, Rouen M, Magrez M, Toupet L, Caijo F, Borré E, Laurent I, Crévisy C, Baslé O, Mauduit M, Percy JM. Synergic Effects Between N-Heterocyclic Carbene and Chelating Benzylidene–Ether Ligands Toward the Initiation Step of Hoveyda–Grubbs Type Ru Complexes. ACS Catal 2013. [DOI: 10.1021/cs400013z] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- David J. Nelson
- School of
Chemistry, University of St. Andrews, North
Haugh, Fife, St. Andrews,
KY16 9ST, United Kingdom
- WestCHEM Department of Pure and Applied Chemistry, Thomas Graham Building,
295 Cathedral Street, Glasgow, G1 1XL, United Kingdom
| | - Pierre Queval
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Mathieu Rouen
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Magaly Magrez
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Loïc Toupet
- Institut de Physique de Rennes Université Rennes 1, CNRS, UMR 6251
- Campus de Beaulieu Bâtiment 11A 263 av. Général
Leclerc 35042 Rennes Cedex, France
| | - Frédéric Caijo
- OMEGA CAT SYSTEM
Sarl, Ecole Nationale Supérieure de Chimie de Rennes, Avenue du Général Leclerc, CS
50837, 35708 Rennes
Cedex 7, France
| | - Etienne Borré
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Isabelle Laurent
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Christophe Crévisy
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Olivier Baslé
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Marc Mauduit
- Ecole Nationale Supérieure de Chimie de Rennes, CNRS, UMR 6226,
Avenue du Général Leclerc, CS 50837, 35708 Rennes Cedex
7, France
| | - Jonathan M. Percy
- WestCHEM Department of Pure and Applied Chemistry, Thomas Graham Building,
295 Cathedral Street, Glasgow, G1 1XL, United Kingdom
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226
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Rosebrugh LE, Herbert MB, Marx VM, Keitz BK, Grubbs RH. Highly active ruthenium metathesis catalysts exhibiting unprecedented activity and Z-selectivity. J Am Chem Soc 2013; 135:1276-9. [PMID: 23317178 DOI: 10.1021/ja311916m] [Citation(s) in RCA: 136] [Impact Index Per Article: 12.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A novel chelated ruthenium-based metathesis catalyst bearing an N-2,6-diisopropylphenyl group is reported and displays near-perfect selectivity for the Z-olefin (>95%), as well as unparalleled TONs of up to 7400, in a variety of homodimerization and industrially relevant metathesis reactions. This derivative and other new catalytically active species were synthesized using an improved method employing sodium carboxylates to induce the salt metathesis and C-H activation of these chelated complexes. All of these new ruthenium-based catalysts are highly Z-selective in the homodimerization of terminal olefins.
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Affiliation(s)
- Lauren E Rosebrugh
- Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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227
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Zhang ZG, Roiban GD, Acevedo JP, Polyak I, Reetz MT. A New Type of Stereoselectivity in Baeyer-Villiger Reactions: Access toE- andZ-Olefins. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200759] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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228
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Salem H, Schmitt M, Herrlich (née Blumbach) U, Kühnel E, Brill M, Nägele P, Bogado AL, Rominger F, Hofmann P. Bulky N-Phosphinomethyl-Functionalized N-Heterocyclic Carbene Chelate Ligands: Synthesis, Molecular Geometry, Electronic Structure, and Their Ruthenium Alkylidene Complexes. Organometallics 2013. [DOI: 10.1021/om300487r] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Hiyam Salem
- Catalysis
Research Laboratory
(CaRLa), University of Heidelberg, Im Neuenheimer
Feld 584, D-69120 Heidelberg, Germany
| | - Martin Schmitt
- Organisch-Chemisches Institut, University of Heidelberg, Im Neuenheimer Feld 270,
D-69120 Heidelberg, Germany
| | | | - Erik Kühnel
- Organisch-Chemisches Institut, University of Heidelberg, Im Neuenheimer Feld 270,
D-69120 Heidelberg, Germany
| | - Marcel Brill
- Organisch-Chemisches Institut, University of Heidelberg, Im Neuenheimer Feld 270,
D-69120 Heidelberg, Germany
| | - Philipp Nägele
- Organisch-Chemisches Institut, University of Heidelberg, Im Neuenheimer Feld 270,
D-69120 Heidelberg, Germany
| | - André Luiz Bogado
- Organisch-Chemisches Institut, University of Heidelberg, Im Neuenheimer Feld 270,
D-69120 Heidelberg, Germany
| | - Frank Rominger
- Organisch-Chemisches Institut, University of Heidelberg, Im Neuenheimer Feld 270,
D-69120 Heidelberg, Germany
| | - Peter Hofmann
- Catalysis
Research Laboratory
(CaRLa), University of Heidelberg, Im Neuenheimer
Feld 584, D-69120 Heidelberg, Germany
- Organisch-Chemisches Institut, University of Heidelberg, Im Neuenheimer Feld 270,
D-69120 Heidelberg, Germany
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229
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Herbert MB, Marx VM, Pederson RL, Grubbs RH. Concise syntheses of insect pheromones using Z-selective cross metathesis. Angew Chem Int Ed Engl 2013; 52:310-4. [PMID: 23055437 PMCID: PMC3789658 DOI: 10.1002/anie.201206079] [Citation(s) in RCA: 88] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2012] [Indexed: 11/06/2022]
Abstract
Very short synthetic routes to nine cis-olefin-containing pheromones containing a variety of functionality, including an unconjugated (E,Z) diene, are reported. These lepidopteran pheromones are used extensively for pest control, and were easily prepared using ruthenium-based Z-selective cross metathesis, highlighting the advantages of this method over less efficient ways to form Z olefins.
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Affiliation(s)
- Myles B. Herbert
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125 (USA)
| | - Vanessa M. Marx
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125 (USA)
| | | | - Robert H. Grubbs
- Department of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA, 91125 (USA)
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230
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Ghirga F, D'Acquarica I, Monache GD, Toscano S, Mannina L, Sobolev AP, Ugozzoli F, Crocco D, Antiochia R, Botta B. Undecenyl resorc[4]arene in the chair conformation as preorganized synthon for olefin metathesis. RSC Adv 2013. [DOI: 10.1039/c3ra42943a] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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231
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Falivene L, Poater A, Cazin CSJ, Slugovc C, Cavallo L. Energetics of the ruthenium–halide bond in olefin metathesis (pre)catalysts. Dalton Trans 2013; 42:7312-7. [DOI: 10.1039/c2dt32277c] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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232
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Slootweg JC, Kemmink J, Liskamp RMJ, Rijkers DTS. Synthesis and structural characterization of the individual diastereoisomers of a cross-stapled alkene-bridged nisin DE-ring mimic. Org Biomol Chem 2013; 11:7486-96. [DOI: 10.1039/c3ob41359d] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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233
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Marx VM, Herbert MB, Keitz BK, Grubbs RH. Stereoselective access to Z and E macrocycles by ruthenium-catalyzed Z-selective ring-closing metathesis and ethenolysis. J Am Chem Soc 2012; 135:94-7. [PMID: 23244210 DOI: 10.1021/ja311241q] [Citation(s) in RCA: 126] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The first report of Z-selective macrocyclizations using a ruthenium-based metathesis catalyst is described. The selectivity for Z macrocycles is consistently high for a diverse set of substrates with a variety of functional groups and ring sizes. The same catalyst was also employed for the Z-selective ethenolysis of a mixture of E and Z macrocycles, providing the pure E isomer. Notably, an ethylene pressure of only 1 atm was required. These methodologies were successfully applied to the construction of several olfactory macrocycles as well as the formal total synthesis of the cytotoxic alkaloid motuporamine C.
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Affiliation(s)
- Vanessa M Marx
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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234
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Dang Y, Wang ZX, Wang X. Does the Ruthenium Nitrato Catalyst Work Differently in Z-Selective Olefin Metathesis? A DFT Study. Organometallics 2012. [DOI: 10.1021/om300972h] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yanfeng Dang
- College of Chemistry and Chemical
Engineering, Graduate University of the Chinese Academy of Sciences, Beijing 100049, People's
Republic of China
| | - Zhi-Xiang Wang
- College of Chemistry and Chemical
Engineering, Graduate University of the Chinese Academy of Sciences, Beijing 100049, People's
Republic of China
| | - Xiaotai Wang
- Department of Chemistry, University of Colorado Denver, Campus Box 194, P.O. Box 173364, Denver,
Colorado 80217-3364, United States
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235
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Oger C, Balas L, Durand T, Galano JM. Are alkyne reductions chemo-, regio-, and stereoselective enough to provide pure (Z)-olefins in polyfunctionalized bioactive molecules? Chem Rev 2012. [PMID: 23194255 DOI: 10.1021/cr3001753] [Citation(s) in RCA: 251] [Impact Index Per Article: 20.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Camille Oger
- Institut des Biomolécules Max Mousseron, UMR CNRS 5247, Université Montpellier 1, Faculté de Pharmacie, 15 av. Charles Flahault, Bât. D, 34093 Montpellier Cedex 05, France
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236
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Shahane S, Toupet L, Fischmeister C, Bruneau C. Synthesis and Characterization of Sterically Enlarged Hoveyda-Type Olefin Metathesis Catalysts. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201200966] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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237
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Martinez H, Miró P, Charbonneau P, Hillmyer MA, Cramer CJ. Selectivity in Ring-Opening Metathesis Polymerization of Z-Cyclooctenes Catalyzed by a Second-generation Grubbs Catalyst. ACS Catal 2012. [DOI: 10.1021/cs300549u] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Henry Martinez
- Department of Chemistry, Chemical Theory Center, and
Supercomputing Institute, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Pere Miró
- Department of Chemistry, Chemical Theory Center, and
Supercomputing Institute, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Patrick Charbonneau
- Department of Chemistry, Chemical Theory Center, and
Supercomputing Institute, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Marc A. Hillmyer
- Department of Chemistry, Chemical Theory Center, and
Supercomputing Institute, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
| | - Christopher J. Cramer
- Department of Chemistry, Chemical Theory Center, and
Supercomputing Institute, University of Minnesota, 207 Pleasant St. SE, Minneapolis, Minnesota 55455, United States
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238
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Borré E, Rouen M, Laurent I, Magrez M, Caijo F, Crévisy C, Solodenko W, Toupet L, Frankfurter R, Vogt C, Kirschning A, Mauduit M. A Fast-Initiating Ionically Tagged Ruthenium Complex: A Robust Supported Pre-catalyst for Batch-Process and Continuous-Flow Olefin Metathesis. Chemistry 2012; 18:16369-82. [DOI: 10.1002/chem.201201589] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/07/2012] [Indexed: 11/08/2022]
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239
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Herbert MB, Marx VM, Pederson RL, Grubbs RH. Concise Syntheses of Insect Pheromones UsingZ-Selective Cross Metathesis. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201206079] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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240
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Dang Y, Wang ZX, Wang X. A Thorough DFT Study of the Mechanism of Homodimerization of Terminal Olefins through Metathesis with a Chelated Ruthenium Catalyst: From Initiation to Z Selectivity to Regeneration. Organometallics 2012. [DOI: 10.1021/om300784k] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yanfeng Dang
- College of Chemistry and Chemical
Engineering, Graduate University of the Chinese Academy of Sciences, Beijing 100049, People's
Republic of China
| | - Zhi-Xiang Wang
- College of Chemistry and Chemical
Engineering, Graduate University of the Chinese Academy of Sciences, Beijing 100049, People's
Republic of China
| | - Xiaotai Wang
- Department of Chemistry, University of Colorado Denver, Campus Box 194, P.O.
Box 173364, Denver, Colorado 80217-3364, United States
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241
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Cabrera J, Padilla R, Bru M, Lindner R, Kageyama T, Wilckens K, Balof SL, Schanz HJ, Dehn R, Teles JH, Deuerlein S, Müller K, Rominger F, Limbach M. Linker-free, silica-bound olefin-metathesis catalysts: applications in heterogeneous catalysis. Chemistry 2012; 18:14717-24. [PMID: 23019012 DOI: 10.1002/chem.201202248] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Indexed: 11/08/2022]
Abstract
A set of heterogenized olefin-metathesis catalysts, which consisted of Ru complexes with the H(2)ITap ligand (1,3-bis(2',6'-dimethyl-4'dimethyl aminophenyl)-4,5-dihydroimidazol-2-ylidene) that had been adsorbed onto a silica support, has been prepared. These complexes showed strong binding to the solid support without the need for tethering groups on the complex or functionalized silica. The catalysts were tested in the ring-opening-ring-closing-metathesis (RO-RCM) of cyclooctene (COE) and the self-metathesis of methyl oleate under continuous-flow conditions. The best complexes showed a TON>4000, which surpasses the previously reported materials that were either based on the Grubbs-Hoveyda II complex on silica or on the classical heterogeneous Re(2)O(7)/B(2)O(3) catalyst.
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Affiliation(s)
- José Cabrera
- Catalysis Research Laboratory, Heidelberg, Germany
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242
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Marinescu SC, Ng VWL, Lichtscheidl AG, Schrock RR, Müller P, Takase MK. Syntheses of Variations of Stereogenic-at-Metal Imido Alkylidene Complexes of Molybdenum. Organometallics 2012. [DOI: 10.1021/om300585s] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Smaranda C. Marinescu
- Department of Chemistry
6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Victor W. L. Ng
- Department of Chemistry
6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alejandro G. Lichtscheidl
- Department of Chemistry
6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Richard R. Schrock
- Department of Chemistry
6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Peter Müller
- Department of Chemistry
6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Michael K. Takase
- Department of Chemistry
6-331, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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243
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Khan RKM, O'Brien RV, Torker S, Li B, Hoveyda AH. Z- and enantioselective ring-opening/cross-metathesis with enol ethers catalyzed by stereogenic-at-Ru carbenes: reactivity, selectivity, and Curtin-Hammett kinetics. J Am Chem Soc 2012; 134:12774-9. [PMID: 22823567 DOI: 10.1021/ja304827a] [Citation(s) in RCA: 59] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The first instances of Z- and enantioselective Ru-catalyzed olefin metathesis are presented. Ring-opening/cross-metathesis (ROCM) reactions of oxabicyclic alkenes and enol ethers and a phenyl vinyl sulfide are promoted by 0.5-5.0 mol % of enantiomerically pure stereogenic-at-Ru complexes with an aryloxy chelate tethered to the N-heterocyclic carbene. Products are formed efficiently and with exceptional enantioselectivity (>98:2 enantiomer ratio). Surprisingly, the enantioselective ROCM reactions proceed with high Z selectivity (up to 98% Z). Moreover, reactions proceed with the opposite sense of enantioselectivity versus aryl olefins, which afford E isomers exclusively. Preliminary DFT calculations in support of Curtin-Hammett kinetics as well as initial models that account for the stereoselectivity levels and trends are provided.
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Affiliation(s)
- R Kashif M Khan
- Department of Chemistry, Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467, United States
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244
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Khan RKM, Zhugralin AR, Torker S, O’Brien RV, Lombardi PJ, Hoveyda AH. Synthesis, Isolation, Characterization, and Reactivity of High-Energy Stereogenic-at-Ru Carbenes: Stereochemical Inversion through Olefin Metathesis and Other Pathways. J Am Chem Soc 2012; 134:12438-41. [DOI: 10.1021/ja3056722] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- R. Kashif M. Khan
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467,
United States
| | - Adil R. Zhugralin
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467,
United States
| | - Sebastian Torker
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467,
United States
| | - Robert V. O’Brien
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467,
United States
| | - Pamela J. Lombardi
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467,
United States
| | - Amir H. Hoveyda
- Department of Chemistry,
Merkert Chemistry Center, Boston College, Chestnut Hill, Massachusetts 02467,
United States
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245
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Vougioukalakis GC. Removing Ruthenium Residues from Olefin Metathesis Reaction Products. Chemistry 2012; 18:8868-80. [DOI: 10.1002/chem.201200600] [Citation(s) in RCA: 114] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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246
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Credendino R, Falivene L, Cavallo L. π-Face donation from the aromatic N-substituent of N-heterocyclic carbene ligands to metal and its role in catalysis. J Am Chem Soc 2012; 134:8127-35. [PMID: 22524408 DOI: 10.1021/ja212133j] [Citation(s) in RCA: 55] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
In this work, we calculate the redox potential in a series of Ir and Ru complexes bearing a N-heterocyclic carbene (NHC) ligand presenting different Y groups in the para position of the aromatic N-substituent. The calculated redox potentials excellently correlate with the experimental ΔE(1/2) potentials, offering a handle to rationalize the experimental findings. Analysis of the HOMO of the complexes before oxidation suggests that electron-donating Y groups destabilize the metal centered HOMO. Energy decomposition of the metal-NHC interaction indicates that electron-donating Y groups reinforce this interaction in the oxidized complexes. Analysis of the electron density in the reduced and oxidized states of representative complexes indicates a clear donation from the C(ipso) of the N-substituents to an empty d orbital on the metal. In case of the Ru complexes, this mechanism involves the Ru-alkylidene moiety. All of these results suggest that electron-donating Y groups render the aromatic N-substituent able to donate more density to electron-deficient metals through the C(ipso) atom. This conclusion suggests that electron-donating Y groups could stabilize higher oxidation states during catalysis. To test this hypothesis, we investigated the effect of differently donating Y groups in model reactions of Ru-catalyzed olefin metathesis and Pd-catalyzed C-C cross-coupling. Consistent with the experimental results, calculations indicate an easier reaction pathway if the N-substituent of the NHC ligand presents an electron-donating Y group.
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Affiliation(s)
- Raffaele Credendino
- Dipartimento di Chimica e Biologia, Università di Salerno, Via Ponte don Melillo, I-84084 Fisciano (SA), Italy
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247
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Nishio S, Somete T, Sugie A, Kobayashi T, Yaita T, Mori A. Axially Chiral Macrocyclic E-Alkene Bearing Bisazole Component Formed by Sequential C–H Homocoupling and Ring-Closing Metathesis. Org Lett 2012; 14:2476-9. [DOI: 10.1021/ol300755y] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Shotaro Nishio
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan, and Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Takashi Somete
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan, and Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Atsushi Sugie
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan, and Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tohru Kobayashi
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan, and Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Tsuyoshi Yaita
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan, and Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
| | - Atsunori Mori
- Department of Chemical Science and Engineering, Kobe University, 1-1 Rokkodai, Nada, Kobe 657-8501, Japan, and Quantum Beam Science Directorate, Japan Atomic Energy Agency, 1-1-1 Koto, Sayo-cho, Sayo-gun, Hyogo 679-5148, Japan
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248
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Herbert MB, Lan Y, Keitz BK, Liu P, Endo K, Day MW, Houk KN, Grubbs RH. Decomposition pathways of Z-selective ruthenium metathesis catalysts. J Am Chem Soc 2012; 134:7861-6. [PMID: 22500642 DOI: 10.1021/ja301108m] [Citation(s) in RCA: 88] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The decomposition of a Z-selective ruthenium metathesis catalyst and structurally similar analogues has been investigated utilizing X-ray crystallography and density functional theory. Isolated X-ray crystal structures suggest that recently reported C-H activated catalysts undergo decomposition via insertion of the alkylidene moiety into the chelating ruthenium-carbon bond followed by hydride elimination, which is supported by theoretical calculations. The resulting ruthenium hydride intermediates have been implicated in previously observed olefin migration, and thus lead to unwanted byproducts in cross metathesis reactions. Preventing these decomposition modes will be essential in the design of more active and selective Z-selective catalysts.
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Affiliation(s)
- Myles B Herbert
- Arnold and Mabel Beckman Laboratory of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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249
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Pietraszuk C, Rogalski S, Powała B, Miętkiewski M, Kubicki M, Spólnik G, Danikiewicz W, Woźniak K, Pazio A, Szadkowska A, Kozłowska A, Grela K. Ruthenium-Amido Complexes: Synthesis, Structure, and Catalytic Activity in Olefin Metathesis. Chemistry 2012; 18:6465-9. [DOI: 10.1002/chem.201103973] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/19/2011] [Revised: 03/07/2012] [Indexed: 11/06/2022]
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250
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Keitz BK, Fedorov A, Grubbs RH. Cis-selective ring-opening metathesis polymerization with ruthenium catalysts. J Am Chem Soc 2012; 134:2040-3. [PMID: 22239675 DOI: 10.1021/ja211676y] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Cis-selective ring-opening metathesis polymerization of several monocyclic alkenes as well as norbornene and oxanorbornene-type monomers using a C-H activated, ruthenium-based metathesis catalyst is reported. The cis content of the isolated polymers depended heavily on the monomer structure and temperature. A cis content as high as 96% could be obtained by lowering the temperature of the polymerization.
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Affiliation(s)
- Benjamin K Keitz
- Arnold and Mabel Beckman Laboratories of Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, USA
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