1
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Chang ASM, Kascoutas MA, Valentine QP, How KI, Thomas RM, Cook AK. Alkene Isomerization Using a Heterogeneous Nickel-Hydride Catalyst. J Am Chem Soc 2024; 146:15596-15608. [PMID: 38771258 DOI: 10.1021/jacs.4c04719] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Transition metal-catalyzed alkene isomerization is an enabling technology used to install an alkene distal to its original site. Due to their well-defined structure, homogeneous catalysts can be fine-tuned to optimize reactivity, stereoselectivity, and positional selectivity, but they often suffer from instability and nonrecyclability. Heterogeneous catalysts are generally highly robust but continue to lack active-site specificity and are challenging to rationally improve through structural modification. Known single-site heterogeneous catalysts for alkene isomerization utilize precious metals and bespoke, expensive, and synthetically intense supports. Additionally, they generally have mediocre reactivity, inspiring us to develop a heterogeneous catalyst with an active site made from readily available compounds made of Earth-abundant elements. Previous work demonstrated that a very active homogeneous catalyst is formed upon protonation of Ni[P(OEt)3]4 by H2SO4, generating a [Ni-H]+ active site. This catalyst is incredibly active, but also decomposes readily, which severely limits its utility. Herein we show that by using a solid acid (sulfated zirconia, SZO300), not only is this decomposition prevented, but high activity is maintained, improved selectivity is achieved, and a broader scope of functional groups is tolerated. Preliminary mechanistic experiments suggest that the catalytic reaction likely goes through an intermolecular, two-electron pathway. A detailed kinetic study comparing the state-of-the-art Ni and Pd isomerization catalysts reveals that the highest activity and selectivity is seen with the Ni/SZO300 system. The reactivity of Ni/SZO300, is not limited to alkene isomerization; it is also a competent catalyst for hydroalkenylation, hydroboration, and hydrosilylation, demonstrating the broad application of this heterogeneous catalyst.
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Affiliation(s)
- Alison Sy-Min Chang
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Melanie A Kascoutas
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Quinn P Valentine
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Kiera I How
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Rachel M Thomas
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
| | - Amanda K Cook
- Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
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2
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Duchemin C, Kim J, Chirik PJ. CS-Symmetric Pyridine(diimine) Iron Methyl Complexes for Catalytic [2+2] Cycloaddition and Hydrovinylation: Metallacycle Geometry Determines Selectivity. JACS AU 2023; 3:2007-2024. [PMID: 37502155 PMCID: PMC10369671 DOI: 10.1021/jacsau.3c00229] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/06/2023] [Revised: 06/17/2023] [Accepted: 06/20/2023] [Indexed: 07/29/2023]
Abstract
A series of CS-symmetric (aryl,alkyl)-substituted pyridine(dimine) iron methyl (CyARPDI)FeCH3 complexes have been prepared, characterized, and evaluated as precatalysts for the [2+2]-cycloaddition of butadiene and ethylene. Mixtures of vinylcyclobutane and (Z)-hexa-1,4-diene were observed in each case. By comparison, C2v-symmetric, arylated (PDI) iron catalysts are exclusively selective for reversible [2+2]-cycloaddition to yield vinylcyclobutane. The alteration in the chemoselectivity of the catalytic reaction was investigated through a combination of precatalyst stability studies, identification of catalytic resting state(s), and 2H and 13C isotopic labeling experiments. While replacement of an aryl-imine substituent with an N-alkyl group decreases the stability of the formally iron(0) dinitrogen and butadiene complexes, two diamagnetic metallacycles were identified as catalyst resting states. Deuterium labeling and NOESY/EXSY NMR experiments support 1,4-hexadiene arising from catalytic hydrovinylation involving reversible oxidative cyclization leading to accessible cis-metallacycle. Cyclobutane formation proceeds by irreversible C(sp3)-C(sp3) bond-forming reductive elimination from a trans-metallacycle. These studies provide key mechanistic understanding into the high selectivity of bis(arylated) pyridine(diimine) iron catalysts for [2+2]-cycloaddition, unique, thus far, to this class of iron catalysts.
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3
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Simlandy AK, Alturaifi TM, Nguyen JM, Oxtoby LJ, Wong QN, Chen JS, Liu P, Engle KM. Enantioselective Hydroalkenylation and Hydroalkynylation of Alkenes Enabled by a Transient Directing Group: Catalyst Generality through Rigidification. Angew Chem Int Ed Engl 2023; 62:e202304013. [PMID: 37141510 PMCID: PMC10524838 DOI: 10.1002/anie.202304013] [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: 03/20/2023] [Revised: 05/04/2023] [Accepted: 05/04/2023] [Indexed: 05/06/2023]
Abstract
The catalytic enantioselective synthesis of α-chiral alkenes and alkynes represents a powerful strategy for rapid generation of molecular complexity. Herein, we report a transient directing group (TDG) strategy to facilitate site-selective palladium-catalyzed reductive Heck-type hydroalkenylation and hydroalkynylation of alkenylaldehyes using alkenyl and alkynyl bromides, respectively, allowing for construction of a stereocenter at the δ-position with respect to the aldehyde. Computational studies reveal the dual beneficial roles of rigid TDGs, such as L-tert-leucine, in promoting TDG binding and inducing high levels of enantioselectivity in alkene insertion with a variety of migrating groups.
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Affiliation(s)
- Amit Kumar Simlandy
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, CA 92037, La Jolla, USA
| | - Turki M Alturaifi
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, PA 15260, Pittsburgh, USA
| | - Johny M Nguyen
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, CA 92037, La Jolla, USA
| | - Lucas J Oxtoby
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, CA 92037, La Jolla, USA
| | - Quynh Nguyen Wong
- Automated Synthesis Facility, The Scripps Research Institute, 10550 North Torrey Pines Road, CA 92037, La Jolla, USA
| | - Jason S Chen
- Automated Synthesis Facility, The Scripps Research Institute, 10550 North Torrey Pines Road, CA 92037, La Jolla, USA
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, 219 Parkman Avenue, PA 15260, Pittsburgh, USA
| | - Keary M Engle
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, CA 92037, La Jolla, USA
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4
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Sarkar S, Ghosh S, Kurandina D, Noffel Y, Gevorgyan V. Enhanced Excited-State Hydricity of Pd-H Allows for Unusual Head-to-Tail Hydroalkenylation of Alkenes. J Am Chem Soc 2023; 145:12224-12232. [PMID: 37224263 PMCID: PMC10750326 DOI: 10.1021/jacs.3c02410] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/26/2023]
Abstract
Photoinduced enhancement of hydricity of palladium hydride species enables unprecedented hydride addition-like ("hydridic") hydropalladation of electron-deficient alkenes, which allows for chemoselective head-to-tail cross-hydroalkenylation of electron-deficient and electron-rich alkenes. This mild and general protocol works with a wide range of densely functionalized and complex alkenes. Notably, this approach also allows for highly challenging cross-dimerization of electronically diverse vinyl arenes and heteroarenes.
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Affiliation(s)
- Sumon Sarkar
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
| | - Soumen Ghosh
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
| | - Daria Kurandina
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
| | - Yusuf Noffel
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
| | - Vladimir Gevorgyan
- Department of Chemistry and Biochemistry, The University of Texas at Dallas, Richardson, Texas 75080-3021, United States
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5
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Coordination Versatility of NHC-metal Topologies in Asymmetric Catalysis: Synthetic Insights and Recent Trends. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214922] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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6
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Gu ZY, Li WD, Li YL, Cui K, Xia JB. Selective Reductive Coupling of Vinyl Azaarenes and Alkynes via Photoredox Cobalt Dual Catalysis. Angew Chem Int Ed Engl 2023; 62:e202213281. [PMID: 36178079 DOI: 10.1002/anie.202213281] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/08/2022] [Indexed: 12/30/2022]
Abstract
A visible light-induced Co-catalyzed highly regio- and stereoselective reductive coupling of vinyl azaarenes and alkynes has been developed. Notably, Hünig's base together with simple ethanol has been successfully applied as the hydrogen sources instead of commonly used Hantzsch esters in this catalytic photoredox reaction. This approach has considerable advantages for the straightforward synthesis of stereodefined multiple substituted alkenes bearing an azaarene motif, such as excellent regioselectivity (>20 : 1 for >30 examples) and stereoselectivity (>20 : 1 E/Z), broad substrate scope and good functional group compatibility under mild reaction conditions, which has been utilized in the concise synthesis of natural product monomorine I. A reasonable catalytic reaction pathway involving protolysis of the cobaltacyclopentene intermediate has been proposed based on the mechanistic studies.
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Affiliation(s)
- Zheng-Yang Gu
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.,College of Textiles and Clothing, Key Laboratory for Advanced Technology in Environmental Protection of Jiangsu Province, Yancheng Institute of Technology, Yancheng, 224003, China
| | - Wen-Duo Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Yan-Lin Li
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Kun Cui
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China
| | - Ji-Bao Xia
- State Key Laboratory for Oxo Synthesis and Selective Oxidation, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000, China.,University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing, 100049, China
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7
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Whitehurst WG, Kim J, Koenig SG, Chirik PJ. Three-Component Coupling of Arenes, Ethylene, and Alkynes Catalyzed by a Cationic Bis(phosphine) Cobalt Complex: Intercepting Metallacyclopentenes for C-H Functionalization. J Am Chem Soc 2022; 144:4530-4540. [PMID: 35245039 PMCID: PMC8931730 DOI: 10.1021/jacs.1c12646] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
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A cobalt-catalyzed
intermolecular three-component coupling of arenes,
ethylene, and alkynes was developed using the well-defined air-stable
cationic bis(phosphine) cobalt(I) complex, [(dcype)Co(η6-C7H8)][BArF4]
(dcype = 1,2-bis(dicyclohexylphosphino)ethane; BArF4 = B[(3,5-(CF3)2)C6H3]4), as the precatalyst. All three components were
required for turnover and formation of ortho-homoallylated
arene products. A range of directing groups including amide, ketone,
and 2-pyridyl substituents on the arene promoted the reaction. The
cobalt-catalyzed method exhibited broad functional group tolerance
allowing for the late-stage functionalization of two drug molecules,
fenofibrate and haloperidol. A series of control reactions, deuterium
labeling studies, resting state analysis, as well as synthesis of
substrate- and product-bound η6-arene complexes supported
a pathway involving C(sp2)–H activation from a cobalt(III) metallacycle.
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Affiliation(s)
- William G Whitehurst
- Department of Chemistry, Frick Laboratory, Princeton University, Princeton, New Jersey 08544, United States
| | - Junho Kim
- Department of Chemistry, Frick Laboratory, Princeton University, Princeton, New Jersey 08544, United States
| | - Stefan G Koenig
- Small Molecule Process Chemistry, Genentech Inc., 1 DNA Way, South San Francisco, California 94080, United States
| | - Paul J Chirik
- Department of Chemistry, Frick Laboratory, Princeton University, Princeton, New Jersey 08544, United States
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8
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Petruncio G, Shellnutt Z, Elahi-Mohassel S, Alishetty S, Paige M. Skipped dienes in natural product synthesis. Nat Prod Rep 2021; 38:2187-2213. [PMID: 34913051 DOI: 10.1039/d1np00012h] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
Covering: 2000-2020The 1,4-diene motif, also known as a skipped diene, is widespread across various classes of natural products including alkaloids, fatty acids, terpenoids, and polyketides as part of either the finalized structure or a biosynthetic intermediate. The prevalence of this nonconjugated diene system in nature has resulted in numerous encounters in the total synthesis literature. However, skipped dienes have not been extensively reviewed, which could be attributed to overshadowing by the more recognized 1,3-diene system. In this review, we aim to highlight the relevance of skipped dienes in natural products through the lens of total synthesis. Subjects that will be covered include nomenclature, structural properties, prevalence in natural products, synthetic strategies and the future direction of the field.
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Affiliation(s)
- Greg Petruncio
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA.
| | - Zachary Shellnutt
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA.
| | - Synah Elahi-Mohassel
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA.
| | - Suman Alishetty
- Department of Bioengineering, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA
| | - Mikell Paige
- Department of Chemistry & Biochemistry, George Mason University, 10920 George Mason Circle, Manassas, Virginia 20110, USA.
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9
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Parsutkar MM, RajanBabu TV. α- and β-Functionalized Ketones from 1,3-Dienes and Aldehydes: Control of Regio- and Enantioselectivity in Hydroacylation of 1,3-Dienes. J Am Chem Soc 2021; 143:12825-12835. [PMID: 34351138 PMCID: PMC8554466 DOI: 10.1021/jacs.1c06245] [Citation(s) in RCA: 20] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Ketones are among the most widely used intermediates in organic synthesis, and their synthesis from inexpensive feedstocks could be quite impactful. Regio- and enantioselective hydroacylation reactions of dienes provide facile entry into useful ketone-bearing chiral motifs with an additional latent functionality (alkene) suitable for further elaboration. Three classes of dienes, 2- or 4-monosubstituted and 2,4-disubstituted 1,3-dienes, undergo cobalt(I)-catalyzed regio- and enantioselective hydroacylation, giving products with high enantiomeric ratios (er). These reactions are highly dependent on the ligands, and we have identified the most useful ligands and reaction conditions for each class of dienes. 2-Substituted and 2,4-disubstituted dienes predominantly undergo 1,2-addition, whereas 4-substituted terminal dienes give highly enantioselective 4,1- or 4,3-hydroacylation depending on the aldehyde, aliphatic aldehydes giving 4,1-addition and aromatic aldehydes giving 4,3-addition. Included among the substrates are feedstock dienes, isoprene (US$1.4/kg) and myrcene (US$129/kg), and several common aldehydes. We propose an oxidative dimerization mechanism that involves a Co(I)/Co(III) redox cycle that appears to be initiated by a cationic Co(I) intermediate. Studies of reactions using isolated neutral and cationic Co(I) complexes confirm the critical role of the cationic intermediates in these reactions. Enantioselective 1,2-hydroacylation of 2-trimethylsiloxy-1,3-diene reveals a hitherto undisclosed route to chiral siloxy-protected aldols. Finally, facile syntheses of the anti-inflammatory drug (S)-Flobufen (2 steps, 92% yield, >99:1 er) and the food additive (S)-Dihydrotagetone (1 step, 83% yield; 96:4 er) from isoprene illustrate the power of this method for the preparation of commercially relevant compounds.
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Affiliation(s)
- Mahesh M Parsutkar
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
| | - T V RajanBabu
- Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210, United States
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10
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Movahhed S, Westphal J, Kempa A, Schumacher CE, Sperlich J, Neudörfl J, Teusch N, Hochgürtel M, Schmalz H. Total Synthesis of (+)-Erogorgiaene and the Pseudopterosin A-F Aglycone via Enantioselective Cobalt-Catalyzed Hydrovinylation. Chemistry 2021; 27:11574-11579. [PMID: 34096655 PMCID: PMC8456859 DOI: 10.1002/chem.202101863] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Indexed: 12/04/2022]
Abstract
Due to their pronounced bioactivity and limited availability from natural resources, metabolites of the soft coral Pseudopterogorgia elisabethae, such as erogorgiaene and the pseudopterosines, represent important target molecules for chemical synthesis. We have now developed a particularly short and efficient route towards these marine diterpenes exploiting an operationally convenient enantioselective cobalt-catalyzed hydrovinylation as the chirogenic step. Other noteworthy C-C bond forming transformations include diastereoselective Lewis acid-mediated cyclizations, a Suzuki coupling and a carbonyl ene reaction. Starting from 4-methyl-styrene the anti-tubercular agent (+)-erogorgiaene (>98 % ee) was prepared in only 7 steps with 46 % overall yield. In addition, the synthesis of the pseudopterosin A aglycone was achieved in 12 steps with 30 % overall yield and, surprisingly, was found to exhibit a similar anti-inflammatory activity (inhibition of LPS-induced NF-κB activation) as a natural mixture of pseudopterosins A-D or iso-pseudopterosin A, prepared by β-D-xylosylation of the synthetic aglycone.
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Affiliation(s)
| | | | - Alexander Kempa
- TH Köln, Faculty of Applied Natural SciencesKaiser-Wilhelm-Allee, G. E3951373LeverkusenGermany
| | | | - Julia Sperlich
- TH Köln, Faculty of Applied Natural SciencesKaiser-Wilhelm-Allee, G. E3951373LeverkusenGermany
| | | | - Nicole Teusch
- TH Köln, Faculty of Applied Natural SciencesKaiser-Wilhelm-Allee, G. E3951373LeverkusenGermany
| | - Matthias Hochgürtel
- TH Köln, Faculty of Applied Natural SciencesKaiser-Wilhelm-Allee, G. E3951373LeverkusenGermany
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11
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Juliá F, Yan J, Paulus F, Ritter T. Vinyl Thianthrenium Tetrafluoroborate: A Practical and Versatile Vinylating Reagent Made from Ethylene. J Am Chem Soc 2021; 143:12992-12998. [PMID: 34375088 PMCID: PMC8391941 DOI: 10.1021/jacs.1c06632] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
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The use of vinyl
electrophiles in synthesis has been hampered by
the lack of access to a suitable reagent
that is practical and of appropriate reactivity. In this work we introduce
a vinyl thianthrenium salt as an effective vinylating reagent. The
bench-stable, crystalline reagent can be readily prepared from ethylene
gas at atmospheric pressure in one step and is broadly useful in the
annulation chemistry of (hetero)cycles, N-vinylation of heterocyclic
compounds, and palladium-catalyzed cross-coupling reactions. The structural
features of the thianthrene core enable a distinct synthesis and reactivity
profile, unprecedented for other vinyl sulfonium derivatives.
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Affiliation(s)
- Fabio Juliá
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Jiyao Yan
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Fritz Paulus
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm Platz 1, D-45470 Mülheim an der Ruhr, Germany
| | - Tobias Ritter
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm Platz 1, D-45470 Mülheim an der Ruhr, Germany
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12
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Schuppe AW, Knippel JL, Borrajo-Calleja GM, Buchwald SL. Enantioselective Hydroalkenylation of Olefins with Enol Sulfonates Enabled by Dual Copper Hydride and Palladium Catalysis. J Am Chem Soc 2021; 143:5330-5335. [PMID: 33784090 DOI: 10.1021/jacs.1c02117] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The catalytic enantioselective synthesis of α-chiral olefins represents a valuable strategy for rapid generation of structural diversity in divergent syntheses of complex targets. Herein, we report a protocol for the dual CuH- and Pd-catalyzed asymmetric Markovnikov hydroalkenylation of vinyl arenes and the anti-Markovnikov hydroalkenylation of unactivated olefins, in which readily available enol triflates can be utilized as alkenyl coupling partners. This method allowed for the synthesis of diverse α-chiral olefins, including tri- and tetrasubstituted olefin products, which are challenging to prepare by existing approaches.
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Affiliation(s)
- Alexander W Schuppe
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - James Levi Knippel
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Gustavo M Borrajo-Calleja
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
| | - Stephen L Buchwald
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139, United States
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13
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Pang X, Zhao ZZ, Wei XX, Qi L, Xu GL, Duan J, Liu XY, Shu XZ. Regiocontrolled Reductive Vinylation of Aliphatic 1,3-Dienes with Vinyl Triflates by Nickel Catalysis. J Am Chem Soc 2021; 143:4536-4542. [DOI: 10.1021/jacs.1c00142] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiaobo Pang
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Zhen-Zhen Zhao
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Xiao-Xue Wei
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Liangliang Qi
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Guang-Li Xu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Jicheng Duan
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Xue-Yuan Liu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
| | - Xing-Zhong Shu
- State Key Laboratory of Applied Organic Chemistry (SKLAOC), College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou 730000, China
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14
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Kennedy CR, Joannou MV, Steves JE, Hoyt JM, Kovel CB, Chirik PJ. Iron-Catalyzed Vinylsilane Dimerization and Cross-Cycloadditions with 1,3-Dienes: Probing the Origins of Chemo- and Regioselectivity. ACS Catal 2021; 11:1368-1379. [PMID: 34336370 PMCID: PMC8317497 DOI: 10.1021/acscatal.0c04608] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
The selective, intermolecular, homodimerization and cross-cycloaddition of vinylsilanes with unbiased 1,3-dienes, catalyzed by a pyridine-2,6-diimine (PDI) iron complex is described. In the absence of a diene coupling partner, vinylsilane hydroalkenylation products were obtained chemoselectively with unusual head-to-head regioselectivity (up to >98% purity, 98:2 E/Z). In the presence of a 4- or 2-substituted diene coupling partner, under otherwise identical reaction conditions, formation of value-added [2+2]- and [4+2]-cycloadducts, respectively, was observed. The chemoselectivity profile was distinct from that observed for analogous α-olefin dimerization and cross-reactions with 1,3-dienes. Mechanistic studies conducted with well-defined, single-component precatalysts (MePDI)Fe(L2) (where MePDI = 2,6-(2,6-Me2-C6H3N═CMe)2C5H3N; L2 = butadiene or 2(N2)) provided insights into the kinetic and thermodynamic factors contributing to the substrate-controlled regioselectivity for both the homodimerization and cross cycloadditions. Diamagnetic iron diene and paramagnetic iron olefin complexes were identified as catalyst resting states, were characterized by in situ NMR and Mössbauer spectroscopic studies, and were corroborated with DFT calculations. Stoichiometric reactions and computational models provided evidence for a common mechanistic regime where competing steric and orbital-symmetry requirements dictate the regioselectivity of oxidative cyclization. Although distinct chemoselectivity profiles were observed in cross-cycloadditions with the vinylsilane congeners of α-olefins, these products arose from metallacycles with the same connectivity. The silyl substituents ultimately governed the relative rates of β-H elimination and C-C reductive elimination to dictate final product formation.
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Affiliation(s)
| | | | | | - Jordan M. Hoyt
- Department of Chemistry, Princeton University, Princeton, NJ 08544
| | - Carli B. Kovel
- Department of Chemistry, Princeton University, Princeton, NJ 08544
| | - Paul J. Chirik
- Department of Chemistry, Princeton University, Princeton, NJ 08544
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15
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Wang CG, Zhang Y, Wang S, Chen B, Li Y, Ni HL, Gao Y, Hu P, Wang BQ, Cao P. Nickel-Catalyzed Carboalkenylation of 1,3-Dienes with Aldehydes and Alkenylzirconium Reagents: Access to Skipped Dienes. Org Lett 2021; 23:535-541. [DOI: 10.1021/acs.orglett.0c04059] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cheng-Gang Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Yunxing Zhang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Simin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Bin Chen
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Yang Li
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Hai-Liang Ni
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Yuanji Gao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Ping Hu
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Bi-Qin Wang
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
| | - Peng Cao
- College of Chemistry and Materials Science, Sichuan Normal University, Chengdu 610066, China
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16
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Zhang Z, Zhang JX, Sheong FK, Lin Z. 1,4-Selective Hydrovinylation of Diene Catalyzed by an Iron Diimine Catalyst: A Computational Case Study on Two-State Reactivity. ACS Catal 2020. [DOI: 10.1021/acscatal.0c03535] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Zhihan Zhang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Jing-Xuan Zhang
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Fu Kit Sheong
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
- Institute for Advanced Study, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
| | - Zhenyang Lin
- Department of Chemistry, The Hong Kong University of Science and Technology, Clear Water Bay, Hong Kong, China
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17
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Sattler LE, Hilt G. Allylic Oxidation of Ester-Substituted 1,4-Dienes. J Org Chem 2020; 85:7595-7602. [DOI: 10.1021/acs.joc.0c00776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Lars. E. Sattler
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Str. 4, D-35043 Marburg, Germany
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky Straße 9-11, D-26111 Oldenburg, Germany
| | - Gerhard Hilt
- Institut für Chemie, Universität Oldenburg, Carl-von-Ossietzky Straße 9-11, D-26111 Oldenburg, Germany
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18
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Chen Y, Dang L, Ho CY. NHC-Ni catalyzed enantioselective synthesis of 1,4-dienes by cross-hydroalkenylation of cyclic 1,3-dienes and heterosubstituted terminal olefins. Nat Commun 2020; 11:2269. [PMID: 32385240 PMCID: PMC7210895 DOI: 10.1038/s41467-020-16139-2] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/06/2020] [Accepted: 04/14/2020] [Indexed: 01/03/2023] Open
Abstract
Enantioenriched 1,4-dienes are versatile building blocks in asymmetric synthesis, therefore their efficient synthesis directly from chemical feedstock is highly sought after. Here, we show an enantioselective cross-hydroalkenylation of cyclic 1,3-diene and hetero-substituted terminal olefin by using a chiral [NHC-Ni(allyl)]BArF catalyst. Using a structurally flexible chiral C2 NHC-Ni design is key to access a broad scope of chiral 1,4-diene 3 or 3′ with high enantioselectivity. This study also offers insights on how to regulate chiral C2 NHC-Ni(II) 1,3-allylic shift on cyclic diene 1 and to build sterically more hindered endocyclic chiral allylic structures on demand. Chiral 1,4-dienes are versatile building blocks in asymmetric synthesis, therefore their production is highly sought after. Here, the authors report an efficient enantioselective cross-hydroalkenylation of cyclic 1,3-dienes and terminal olefins affording chiral 1,4-dienes by using a chiral NHC-Ni(allyl)]BArF catalyst.
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Affiliation(s)
- Yang Chen
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China
| | - Liang Dang
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China.
| | - Chun-Yu Ho
- Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Department of Chemistry, Southern University of Science and Technology (SUSTech), Shenzhen, 518055, China.
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19
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Huang JQ, Ho CY. NHC/Nickel(II)-Catalyzed [3+2] Cross-Dimerization of Unactivated Olefins and Methylenecyclopropanes. Angew Chem Int Ed Engl 2020; 59:5288-5292. [PMID: 31943646 DOI: 10.1002/anie.201914542] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/14/2019] [Revised: 12/18/2019] [Indexed: 11/08/2022]
Abstract
Cross-dimerization of a methylenecyclopropane (1) and an unactivated alkene (2) with typical hydroalkenylation reactivity was observed for the first time by using a [NHC-Ni(allyl)]BArF catalyst (NHC=N-heterocyclic carbene). Results show that the C-C cleavage of 1 did not involve a Ni0 oxidative addition, which was crucial in former systems. Thus the method reported here emerges as a complementary method for attaining highly chemo- and regioselective synthesis of methylenecyclopentanes (3) with broad scope. An efficient NHC/NiII -catalyzed rearrangement of 1 leads to the convergent synthesis of 3 in the presence of 2.
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Affiliation(s)
- Jian-Qiang Huang
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology (SUSTech), China.,Department of Chemistry and Molecular Sciences, Wuhan University, China
| | - Chun-Yu Ho
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology (SUSTech), China
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20
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Huang J, Ho C. NHC/Nickel(II)‐Catalyzed [3+2] Cross‐Dimerization of Unactivated Olefins and Methylenecyclopropanes. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201914542] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jian‐Qiang Huang
- Shenzhen Grubbs InstituteDepartment of ChemistrySouthern University of Science and Technology (SUSTech) China
- Department of Chemistry and Molecular SciencesWuhan University China
| | - Chun‐Yu Ho
- Shenzhen Grubbs InstituteDepartment of ChemistrySouthern University of Science and Technology (SUSTech) China
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21
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Kennedy CR, Zhong H, Joannou MV, Chirik PJ. Pyridine(diimine) Iron Diene Complexes Relevant to Catalytic [2+2]-Cycloaddition Reactions. Adv Synth Catal 2020; 362:404-416. [PMID: 32431586 PMCID: PMC7236768 DOI: 10.1002/adsc.201901289] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Indexed: 11/10/2022]
Abstract
The synthesis, characterization, and catalytic activity of pyridine(diimine) iron piperylene and isoprene complexes are described. These diene complexes are competent precatalysts for (i) the selective cross-[2+2]-cycloaddition of butadiene or (E)-piperylene with ethylene and α-olefins and (ii) the 1,4-hydrovinylation of isoprene with ethylene. In the former case, kinetic analysis implicates the diamagnetic η4-piperylene complex as the resting state prior to rate-determining oxidative cyclization. Variable temperature 1H NMR and EXSY experiments established that diene exchange from the diamagnetic, 18e- complexes occurs rapidly in solution at ambient temperature through a dissociative mechanism. The solid-state structure of (Me(Et)PDI)Fe(η4-piperylene) (Me(Et)PDI = 2,6-(2,6-Me2-C6H3N═CEt)2C5H3N), was determined by single-crystal X-ray diffraction and confirmed the s-trans coordination of the monosubstituted 1,3-diene. Possible relationships between ligand-controlled diene coordination geometry, metallacycle denticity, and chemoselectivity of iron-mediated cycloaddition reactions are discussed.
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Affiliation(s)
- C. Rose Kennedy
- Princeton University, Department of Chemistry, Princeton, NJ 08544, United States
| | - Hongyu Zhong
- Princeton University, Department of Chemistry, Princeton, NJ 08544, United States
| | - Matthew V. Joannou
- Princeton University, Department of Chemistry, Princeton, NJ 08544, United States
| | - Paul J. Chirik
- Princeton University, Department of Chemistry, Princeton, NJ 08544, United States
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22
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Michiyuki T, Komeyama K. Recent Advances in Four‐Coordinated Planar Cobalt Catalysis in Organic Synthesis. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900625] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Takuya Michiyuki
- Department of Applied ChemistryGraduate School of EngineeringHiroshima University 1-4-1 Kagamiyama, Higashi-Hiroshima Hiroshima 739-8527 Japan
| | - Kimihiro Komeyama
- Department of Applied ChemistryGraduate School of EngineeringHiroshima University 1-4-1 Kagamiyama, Higashi-Hiroshima Hiroshima 739-8527 Japan
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23
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Cheng L, Li MM, Wang B, Xiao LJ, Xie JH, Zhou QL. Nickel-catalyzed hydroalkylation and hydroalkenylation of 1,3-dienes with hydrazones. Chem Sci 2019; 10:10417-10421. [PMID: 32110333 PMCID: PMC6988744 DOI: 10.1039/c9sc04177j] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2019] [Accepted: 09/19/2019] [Indexed: 12/15/2022] Open
Abstract
Transition-metal-catalyzed hydrofunctionalization of 1,3-dienes is a useful and atom-economical method for constructing allylic compounds. Although substantial progress on hydroalkylation of dienes with stabilized carbon nucleophiles has been made, hydroalkylation of dienes with unstabilized carbon nucleophiles has remained a challenge. In this article, we report a protocol for nickel-catalyzed hydroalkylation of dienes with hydrazones, which serve as equivalents of alkyl carbon nucleophiles. In addition, we developed a protocol for hydroalkenylation of dienes with α,β-unsaturated hydrazones, providing a new method for the synthesis of 1,4-dienes. These hydroalkylation and hydroalkenylation reactions feature mild conditions and a wide substrate scope, and the utility of the reaction products is demonstrated by the preparation of an activator of soluble guanylate cyclase.
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Affiliation(s)
- Lei Cheng
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Nankai University , Tianjin 300071 , China .
| | - Ming-Ming Li
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Nankai University , Tianjin 300071 , China .
| | - Biao Wang
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Nankai University , Tianjin 300071 , China .
| | - Li-Jun Xiao
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Nankai University , Tianjin 300071 , China .
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Nankai University , Tianjin 300071 , China .
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-Organic Chemistry , College of Chemistry , Nankai University , Tianjin 300071 , China .
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24
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Strehl J, Hilt G. Electrochemical, Manganese-Assisted Carbon-Carbon Bond Formation between β-Keto Esters and Silyl Enol Ethers. Org Lett 2019; 21:5259-5263. [PMID: 31247778 DOI: 10.1021/acs.orglett.9b01866] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The electrochemical carbon-carbon bond formation process between β-keto esters and silyl enol ethers was investigated utilizing manganese salts. The tricarbonyl compounds were generated in moderate to good yields under neutral conditions. Control experiments revealed that an electro-generated base at the cathode is important. Electroanalytical measurements with a Mn(TPA) complex suggested that the oxidation of the silyl enol ether is the first step in the oxidation process initiated by a corresponding Mn(IV) species.
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Affiliation(s)
- Julia Strehl
- Institut für Chemie , Universität Oldenburg , Carl-von-Ossietzky-Str. 9-11 , D-26111 Oldenburg , Germany
| | - Gerhard Hilt
- Institut für Chemie , Universität Oldenburg , Carl-von-Ossietzky-Str. 9-11 , D-26111 Oldenburg , Germany
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25
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Ai W, Zhong R, Liu X, Liu Q. Hydride Transfer Reactions Catalyzed by Cobalt Complexes. Chem Rev 2018; 119:2876-2953. [DOI: 10.1021/acs.chemrev.8b00404] [Citation(s) in RCA: 219] [Impact Index Per Article: 36.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Wenying Ai
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Rui Zhong
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Xufang Liu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Qiang Liu
- Center of Basic Molecular Science (CBMS), Department of Chemistry, Tsinghua University, Beijing 100084, China
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26
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Hirano M, Tanaka Y, Komine N. Synthesis of and Catalytic Linear Cross-Dimerizations by an Electron-Deficient Cyclic Diene Complex of Ruthenium(0). Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00645] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Masafumi Hirano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Yukino Tanaka
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Nobuyuki Komine
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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27
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Jadhav AS, Pankhade YA, Hazra R, Anand RV. 1,6-Hydroolefination and Cascade Cyclization of p-Quinone Methides with Styrenes: Total Synthesis of (±)-Isopaucifloral F. J Org Chem 2018; 83:10107-10119. [DOI: 10.1021/acs.joc.8b01401] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Abhijeet S. Jadhav
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab − 140306, India
| | - Yogesh A. Pankhade
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab − 140306, India
| | - Raju Hazra
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab − 140306, India
| | - Ramasamy Vijaya Anand
- Department of Chemical Sciences, Indian Institute of Science Education and Research (IISER) Mohali, Sector 81, Knowledge City, S. A. S. Nagar, Manauli (PO), Punjab − 140306, India
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28
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Friedfeld MR, Zhong H, Ruck RT, Shevlin M, Chirik PJ. Cobalt-catalyzed asymmetric hydrogenation of enamides enabled by single-electron reduction. Science 2018; 360:888-893. [DOI: 10.1126/science.aar6117] [Citation(s) in RCA: 165] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2017] [Revised: 02/13/2018] [Accepted: 04/03/2018] [Indexed: 12/17/2022]
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29
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Azpíroz R, Di Giuseppe A, Passarelli V, Pérez-Torrente JJ, Oro LA, Castarlenas R. Rhodium–N-Heterocyclic Carbene Catalyzed Hydroalkenylation Reactions with 2-Vinylpyridine and 2-Vinylpyrazine: Preparation of Nitrogen-Bridgehead Heterocycles. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00149] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ramón Azpíroz
- Departamento de Química Inorgánica − Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Andrea Di Giuseppe
- Departamento de Química Inorgánica − Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Vincenzo Passarelli
- Departamento de Química Inorgánica − Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
- Centro Universitario de la Defensa, Ctra Huesca S/N, 50090 Zaragoza, Spain
| | - Jesús J. Pérez-Torrente
- Departamento de Química Inorgánica − Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Luis A. Oro
- Departamento de Química Inorgánica − Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Ricardo Castarlenas
- Departamento de Química Inorgánica − Instituto de Síntesis Química y Catálisis Homogénea-ISQCH, Universidad de Zaragoza − CSIC, C/Pedro Cerbuna 12, 50009 Zaragoza, Spain
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30
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Zhang YY, Chen H, Jiang X, Liang H, He X, Zhang Y, Chen X, He W, Li Y, Qiu L. Nickel(II)-catalyzed addition reaction of arylboronic acids to isatins. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.039] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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31
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Xiao LJ, Zhao CY, Cheng L, Feng BY, Feng WM, Xie JH, Xu XF, Zhou QL. Nickel(0)-Catalyzed Hydroalkenylation of Imines with Styrene and Its Derivatives. Angew Chem Int Ed Engl 2018; 57:3396-3400. [DOI: 10.1002/anie.201713333] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/27/2017] [Revised: 01/22/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Li-Jun Xiao
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Chao-Yue Zhao
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education); College of Chemistry; Nankai University; Tianjin 300071 China
| | - Lei Cheng
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Bo-Ya Feng
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education); College of Chemistry; Nankai University; Tianjin 300071 China
| | - Wei-Min Feng
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Xiu-Fang Xu
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education); College of Chemistry; Nankai University; Tianjin 300071 China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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32
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Xiao LJ, Zhao CY, Cheng L, Feng BY, Feng WM, Xie JH, Xu XF, Zhou QL. Nickel(0)-Catalyzed Hydroalkenylation of Imines with Styrene and Its Derivatives. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201713333] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Li-Jun Xiao
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Chao-Yue Zhao
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education); College of Chemistry; Nankai University; Tianjin 300071 China
| | - Lei Cheng
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Bo-Ya Feng
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education); College of Chemistry; Nankai University; Tianjin 300071 China
| | - Wei-Min Feng
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
| | - Xiu-Fang Xu
- Department of Chemistry; Key Laboratory of Advanced Energy Materials Chemistry (Ministry of Education); College of Chemistry; Nankai University; Tianjin 300071 China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry; College of Chemistry; Nankai University; Tianjin 300071 China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300071 China
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33
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Schmidt VA, Kennedy CR, Bezdek MJ, Chirik PJ. Selective [1,4]-Hydrovinylation of 1,3-Dienes with Unactivated Olefins Enabled by Iron Diimine Catalysts. J Am Chem Soc 2018; 140:3443-3453. [PMID: 29414238 DOI: 10.1021/jacs.8b00245] [Citation(s) in RCA: 56] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The selective, intermolecular [1,4]-hydrovinylation of conjugated dienes with unactivated α-olefins catalyzed by α-diimine iron complexes is described. Value-added "skipped" diene products were obtained with exclusive [1,4]-selectivity, and the formation of branched, ( Z)-olefin products was observed with no evidence for alkene isomerization. Mechanistic studies conducted with the well-defined, single-component iron precatalyst (MesDI)Fe(COD) (MesDI = [2,4,6-Me3-C6H2-N═CMe]2); COD = 1,5-cyclooctadiene) provided insights into the origin of the high selectivity. An iron diene complex was identified as the catalyst resting state, and one such isoprene complex, (iPrDI)Fe(η4-C5H8), was isolated and characterized. A combination of single crystal X-ray diffraction, Mößbauer spectroscopy, magnetic measurements, and DFT calculations established that the complex is best described as a high-spin Fe(I) center ( SFe = 3/2) engaged in antiferromagnetic coupling to an α-diimine radical anion ( SDI = -1/2), giving rise to the observed S = 1 ground state. Deuterium-labeling experiments and kinetic analyses of the catalytic reaction provided support for a pathway involving oxidative cyclization of an alkene with the diene complex to generate an iron metallacycle. The observed selectivity can be understood in terms of competing steric interactions in the transition states for oxidative cyclization and subsequent β-hydrogen elimination.
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Affiliation(s)
- Valerie A Schmidt
- Department of Chemistry , Princeton University , Princeton , New Jersey 08544 , United States
| | - C Rose Kennedy
- Department of Chemistry , Princeton University , Princeton , New Jersey 08544 , United States
| | - Máté J Bezdek
- 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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34
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Chen W, Li Y, Chen Y, Ho CY. (NHC)NiH-Catalyzed Regiodivergent Cross-Hydroalkenylation of Vinyl Ethers with α-Olefins: Syntheses of 1,2- and 1,3-Disubstituted Allyl Ethers. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201712693] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Weihao Chen
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); Southern University of Science and Technology (SUSTech); China
| | - Yang Li
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); Southern University of Science and Technology (SUSTech); China
| | - Yang Chen
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); Southern University of Science and Technology (SUSTech); China
| | - Chun-Yu Ho
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); Southern University of Science and Technology (SUSTech); China
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Chen W, Li Y, Chen Y, Ho CY. (NHC)NiH-Catalyzed Regiodivergent Cross-Hydroalkenylation of Vinyl Ethers with α-Olefins: Syntheses of 1,2- and 1,3-Disubstituted Allyl Ethers. Angew Chem Int Ed Engl 2018; 57:2677-2681. [PMID: 29359380 DOI: 10.1002/anie.201712693] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2017] [Indexed: 01/11/2023]
Abstract
Cross-hydroalkenylation of a vinyl ether (1) with an α-olefin (2) was first achieved by a set of [NHC-Ni(allyl)]BArF (NHC=N-heterocyclic carbene) catalysts. Both 1,2- and 1,3-disubstituted allyl ethers were obtained, highly selectively, by using NHCs of different sizes. In contrast, the chemoselectivity (i.e., 1 as acceptor and 2 as donor) was controlled mostly by electronic effects through the catalyst-substrate interaction. Sterically bulkier alkenes (2) were used as preferred donors compared to smaller alkenes. This electronic effect also served as a basis for the first tail-to-head cross-hydroalkenylations of 1 with either a vinyl silane or boronic ester.
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Affiliation(s)
- Weihao Chen
- Department of Chemistry, Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG), Southern University of Science and Technology (SUSTech), China
| | - Yang Li
- Department of Chemistry, Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG), Southern University of Science and Technology (SUSTech), China
| | - Yang Chen
- Department of Chemistry, Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG), Southern University of Science and Technology (SUSTech), China
| | - Chun-Yu Ho
- Department of Chemistry, Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG), Southern University of Science and Technology (SUSTech), China
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36
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Wu H, Li X, Tang X, Huang G. Mechanism and origins of chemo- and regioselectivities of (NHC)NiH-catalyzed cross-hydroalkenylation of vinyl ethers with α-olefins: a computational study. Org Chem Front 2018. [DOI: 10.1039/c8qo01020j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Density functional theory calculations were performed to investigate the (NHC)NiH-catalyzed cross-hydroalkenylation of vinyl ethers with α-olefins.
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Affiliation(s)
- Hongli Wu
- Department of Chemistry
- School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Xiaojie Li
- Department of Chemistry
- School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Xiangyang Tang
- Department of Chemistry
- School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- Tianjin 300072
- P. R. China
| | - Genping Huang
- Department of Chemistry
- School of Science and Tianjin Key Laboratory of Molecular Optoelectronic Sciences
- Tianjin University
- Tianjin 300072
- P. R. China
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37
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Feng J, Holmes M, Krische MJ. Acyclic Quaternary Carbon Stereocenters via Enantioselective Transition Metal Catalysis. Chem Rev 2017; 117:12564-12580. [PMID: 28910092 PMCID: PMC5651685 DOI: 10.1021/acs.chemrev.7b00385] [Citation(s) in RCA: 301] [Impact Index Per Article: 43.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Whereas numerous asymmetric methods for formation of quaternary carbon stereocenters in cyclic systems have been documented, the construction of acyclic quaternary carbon stereocenters with control of absolute stereochemistry remains a formidable challenge. This Review summarizes enantioselective methods for the construction of acyclic quaternary carbon stereocenters from achiral or chiral racemic reactants via transition metal catalysis.
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Affiliation(s)
- Jiajie Feng
- Department of Chemistry, Welch Hall (A5300), University of Texas at Austin , 105 East 24th Street, Austin, Texas 78712, United States
| | - Michael Holmes
- Department of Chemistry, Welch Hall (A5300), University of Texas at Austin , 105 East 24th Street, Austin, Texas 78712, United States
| | - Michael J Krische
- Department of Chemistry, Welch Hall (A5300), University of Texas at Austin , 105 East 24th Street, Austin, Texas 78712, United States
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38
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Fukuzawa H, Aoyagi N, Sato R, Kataoka Y, Ura Y. Ruthenacyclopentanes as Intermediates in the Regio- and Stereoselective Linear Codimerization of N-Vinylamides with Electron-Deficient Alkenes. Organometallics 2017. [DOI: 10.1021/acs.organomet.7b00545] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Hiroko Fukuzawa
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Nozomi Aoyagi
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Ruriko Sato
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Yasutaka Kataoka
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
| | - Yasuyuki Ura
- Department of Chemistry,
Biology, and Environmental Science, Faculty of Science, Nara Women’s University, Kitauoyanishi-machi, Nara 630-8506, Japan
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39
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Lian X, Chen W, Dang L, Li Y, Ho CY. (NHC)NiH-Catalyzed Intermolecular Regio- and Diastereoselective Cross-Hydroalkenylation of Endocyclic Dienes with α-Olefins. Angew Chem Int Ed Engl 2017; 56:9048-9052. [DOI: 10.1002/anie.201703706] [Citation(s) in RCA: 32] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2017] [Revised: 05/12/2017] [Indexed: 11/10/2022]
Affiliation(s)
- Xiaoyan Lian
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
| | - Weihao Chen
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
| | - Liang Dang
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
| | - Yuchen Li
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
| | - Chun-Yu Ho
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
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40
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Lian X, Chen W, Dang L, Li Y, Ho CY. (NHC)NiH-Catalyzed Intermolecular Regio- and Diastereoselective Cross-Hydroalkenylation of Endocyclic Dienes with α-Olefins. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703706] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xiaoyan Lian
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
| | - Weihao Chen
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
| | - Liang Dang
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
| | - Yuchen Li
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
| | - Chun-Yu Ho
- Department of Chemistry; Shenzhen Key Laboratory of Full Spectral Solar Electricity Generation (FSSEG); South University of Science and Technology of China (SUSTC); No. 1088, Xueyuan Road Shenzhen China
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41
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Chirik PJ. Carbon-Carbon Bond Formation in a Weak Ligand Field: Leveraging Open-Shell First-Row Transition-Metal Catalysts. Angew Chem Int Ed Engl 2017; 56:5170-5181. [DOI: 10.1002/anie.201611959] [Citation(s) in RCA: 102] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2016] [Indexed: 11/11/2022]
Affiliation(s)
- Paul J. Chirik
- Department of Chemistry; Princeton University; Princeton NJ 08544 USA
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42
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Chirik PJ. Kohlenstoff-Kohlenstoff-Bindungsbildung in einem schwachen Ligandenfeld: Nutzung von Open-Shell-Übergangsmetallkatalysatoren der ersten Übergangsperiode. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611959] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Paul J. Chirik
- Department of Chemistry; Princeton University; Princeton NJ 08544 USA
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43
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Dong Z, Ren Z, Thompson SJ, Xu Y, Dong G. Transition-Metal-Catalyzed C–H Alkylation Using Alkenes. Chem Rev 2017; 117:9333-9403. [DOI: 10.1021/acs.chemrev.6b00574] [Citation(s) in RCA: 725] [Impact Index Per Article: 103.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Zhe Dong
- Department
of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Zhi Ren
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Samuel J. Thompson
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Yan Xu
- Department
of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
| | - Guangbin Dong
- Department
of Chemistry, University of Chicago, Chicago, Illinois 60637, United States
- Department
of Chemistry, University of Texas at Austin, Austin, Texas 78712, United States
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44
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Weber SM, Hilt G. Control of the Regioselectivity in Cobalt- versus Ruthenium-Catalyzed Alder-ene Reaction of Unsymmetrical 1,3-Diynes. Org Lett 2017; 19:564-567. [DOI: 10.1021/acs.orglett.6b03729] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Sebastian M. Weber
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, D-35043 Marburg, Germany
| | - Gerhard Hilt
- Fachbereich Chemie, Philipps-Universität Marburg, Hans-Meerwein-Straße 4, D-35043 Marburg, Germany
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45
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Movahhed S, Westphal J, Dindaroğlu M, Falk A, Schmalz H. Low‐Pressure Cobalt‐Catalyzed Enantioselective Hydrovinylation of Vinylarenes. Chemistry 2016; 22:7381-4. [DOI: 10.1002/chem.201601283] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/17/2016] [Indexed: 11/10/2022]
Affiliation(s)
- Sohajl Movahhed
- Department of Chemistry University of Cologne Greinstrasse 4 50939 Cologne Germany
| | - Julia Westphal
- Department of Chemistry University of Cologne Greinstrasse 4 50939 Cologne Germany
| | - Mehmet Dindaroğlu
- Department of Chemistry University of Cologne Greinstrasse 4 50939 Cologne Germany
| | - Anna Falk
- Department of Chemistry University of Cologne Greinstrasse 4 50939 Cologne Germany
| | - Hans‐Günther Schmalz
- Department of Chemistry University of Cologne Greinstrasse 4 50939 Cologne Germany
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46
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Biswas S, Page JP, Dewese KR, RajanBabu TV. Asymmetric Catalysis with Ethylene. Synthesis of Functionalized Chiral Enolates. J Am Chem Soc 2015; 137:14268-71. [PMID: 26529467 DOI: 10.1021/jacs.5b10364] [Citation(s) in RCA: 33] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Trialkylsilyl enol ethers are versatile intermediates often used as enolate surrogates for the synthesis of carbonyl compounds. Yet there are no reports of broadly applicable, catalytic methods for the synthesis of chiral silyl enol ethers carrying latent functionalities useful for synthetic operations beyond the many possible reactions of the silyl enol ether moiety itself. Here we report a general procedure for highly catalytic (substrate:catalyst ratio up to 1000:1) and enantioselective (92% to 98% major enantiomer) synthesis of such compounds bearing a vinyl group at a chiral carbon at the β-position. The reactions, run under ambient conditions, use trialkylsiloxy-1,3-dienes and ethylene (1 atm) as precursors and readily available (bis-phosphine)-cobalt(II) complexes as catalysts. The silyl enolates can be readily converted into novel enantiopure vinyl triflates, a class of highly versatile cross-coupling reagents, enabling the syntheses of other enantiomerically pure, stereodefined trisubstituted alkene intermediates not easily accessible by current methods. Examples of Kumada, Stille, and Suzuki coupling reactions are illustrated.
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Affiliation(s)
- Souvagya Biswas
- Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Jordan P Page
- Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - Kendra R Dewese
- Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States
| | - T V RajanBabu
- Department of Chemistry and Biochemistry, The Ohio State University , 100 West 18th Avenue, Columbus, Ohio 43210, United States
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47
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Hong X, Wang J, Yang YF, He L, Ho CY, Houk KN. Computational Exploration of Mechanism and Selectivities of (NHC)Nickel(II)hydride-Catalyzed Hydroalkenylations of Styrene with α-Olefins. ACS Catal 2015. [DOI: 10.1021/acscatal.5b01075] [Citation(s) in RCA: 46] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Xin Hong
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Jinglin Wang
- Department
of Chemistry, South University of Science and Technology of China (SUSTC), Shenzhen 518055, P.R. China
| | - Yun-Fang Yang
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
| | - Lisi He
- Shenzhen
Research Institute, The Chinese University of Hong Kong, Shatin NT, Hong Kong, P.R. China
| | - Chun-Yu Ho
- Department
of Chemistry, South University of Science and Technology of China (SUSTC), Shenzhen 518055, P.R. China
- Shenzhen
Research Institute, The Chinese University of Hong Kong, Shatin NT, Hong Kong, P.R. China
| | - K. N. Houk
- Department
of Chemistry and Biochemistry, University of California, Los Angeles, California 90095, United States
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48
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Substituted 1,3-cyclohexadiene synthesis by NHC–Nickel(0) catalyzed [2+2+2] cycloaddition of 1,n-Enyne. Tetrahedron 2015. [DOI: 10.1016/j.tet.2015.05.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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49
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Timsina YN, Sharma RK, RajanBabu TV. Cobalt-Catalysed Asymmetric Hydrovinylation of 1,3-Dienes. Chem Sci 2015; 6:3994-4008. [PMID: 26430505 PMCID: PMC4587399 DOI: 10.1039/c5sc00929d] [Citation(s) in RCA: 48] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2015] [Accepted: 04/22/2015] [Indexed: 02/06/2023] Open
Abstract
In the presence of bidentate 1,n-bis-diphenylphosphinoalkane-CoCl2 complexes {Cl2Co[P~P]} and Me3Al or methylaluminoxane, acyclic (E)-1,3-dienes react with ethylene (1 atmosphere) to give excellent yields of hydrovinylation products. The regioselectivity (1,4- or 1,2-addition) and the alkene configuration (E- or Z-) of the resulting product depend on the nature of the ligand and temperature at which the reaction is carried out. Cobalt(II)-complexes of 1,1-diphenylphosphinomethane and similar ligands with narrow bite angles give mostly 1,2-addition, retaining the E-geometry of the original diene. Complexes of most other ligands at low temperature (-40 °C) give almost exclusively a single branched product, (Z)-3-alkylhexa-1,4-diene, which arises from a 1,4-hydrovinylation reaction. A minor product is the linear adduct, a 5-alkyl-hexa-1,4-diene, also arising from a 1,4-addition of ethylene. As the temperature is increased, a higher proportion of the major 1,4-adduct appears as the (E)-isomer. The unexpectedly high selectivity seen in the Co-catalysed reaction as compared to the corresponding Ni-catalysed reaction can be rationalized by invoking the intermediacy of an η4-[(diene)[P~P]CoH]+-complex and its subsequent reactions. The enhanced reactivity of terminal E-1,3-dienes over the corresponding Z-dienes can also be explained on the basis of the ease of formation of this η4-complex in the former case. The lack of reactivity of the X2Co(dppb) (X = Cl, Br) complexes in the presence of Zn/ZnI2 makes the Me3Al-mediated reaction different from the previously reported hydroalkenylation of dienes. Electron-rich phospholanes, bis-oxazolines and N-heterocyclic carbenes appear to be poor ligands for the Co(II)-catalysed hydrovinylation of 1,3-dienes. An extensive survey of chiral ligands reveals that complexes of DIOP, BDDP and Josiphos ligands are quite effective for these reactions even at -45 °C and enantioselectivities in the range of 90-99 % ee can be realized for a variety of 1,3-dienes. Cobalt(II)-complex of an electron-deficient Josiphos ligand is especially active, requiring only <1 mol% catalyst to effect the reactions.
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Affiliation(s)
- Yam N. Timsina
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , USA . ; Fax: +1 614 292 1685 ; Tel: +1 614 688 3543
| | - Rakesh K. Sharma
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , USA . ; Fax: +1 614 292 1685 ; Tel: +1 614 688 3543
| | - T. V. RajanBabu
- Department of Chemistry and Biochemistry , The Ohio State University , 100 West 18th Avenue , Columbus , Ohio 43210 , USA . ; Fax: +1 614 292 1685 ; Tel: +1 614 688 3543
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50
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