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Davies TQ, Kim JY, Fürstner A. Nickel-Catalyzed Enantioselective Coupling of Aldehydes and Electron-Deficient 1,3-Dienes Following an Inverse Regiochemical Course. J Am Chem Soc 2022; 144:18817-18822. [PMID: 36194199 PMCID: PMC9585590 DOI: 10.1021/jacs.2c09328] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The nickel catalyzed reductive coupling of aldehydes with sorbate esters and related electron-deficient 1,3-dienes are known in the literature to occur at the π-bond proximal to the ester to afford aldol-type products. In stark contrast to this established path, a VAPOL-derived phosphoramidite ligand in combination with a bench-stable nickel precatalyst brokers a regiocomplementary course in that C-C bond formation proceeds exclusively at the distal alkene site to give deoxypropionate type products carrying an acrylate handle; they can be made in either anti- or syn-configured form. In addition to this enabling reverse pathway, the reaction is distinguished by excellent levels of chemo-, diastereo-, and enantioselectivity; moreover, it can be extended to the catalytic formation of F3C-substituted stereogenic centers. The use of a dienyl pinacolboronate instead of a sorbate ester is also possible, which opens access to valuable chiral borylated building blocks in optically active form.
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Affiliation(s)
- Thomas Q Davies
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Jae Yeon Kim
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
| | - Alois Fürstner
- Max-Planck-Institut für Kohlenforschung, 45470 Mülheim/Ruhr, Germany
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2
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Morita T, Murakami H, Asawa Y, Nakamura H. Enantioselective Synthesis of Oxazaborolidines by Palladium‐Catalyzed N−H/B−H Double Activation of 1,2‐Azaborines. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202113558] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Taiki Morita
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta-cho Midori-ku Yokohama 226-8503 Japan
- School of Life Science and Technology Tokyo Institute of Technology 4259 Nagatsuta-cho Midori-ku Yokohama 226-8503 Japan
| | - Hiroki Murakami
- School of Life Science and Technology Tokyo Institute of Technology 4259 Nagatsuta-cho Midori-ku Yokohama 226-8503 Japan
| | - Yasunobu Asawa
- School of Life Science and Technology Tokyo Institute of Technology 4259 Nagatsuta-cho Midori-ku Yokohama 226-8503 Japan
| | - Hiroyuki Nakamura
- Laboratory for Chemistry and Life Science Institute of Innovative Research Tokyo Institute of Technology 4259 Nagatsuta-cho Midori-ku Yokohama 226-8503 Japan
- School of Life Science and Technology Tokyo Institute of Technology 4259 Nagatsuta-cho Midori-ku Yokohama 226-8503 Japan
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3
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Morita T, Murakami H, Asawa Y, Nakamura H. Enantioselective Synthesis of Oxazaborolidines by Palladium-Catalyzed N-H/B-H Double Activation of 1,2-Azaborines. Angew Chem Int Ed Engl 2021; 61:e202113558. [PMID: 34913232 DOI: 10.1002/anie.202113558] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2021] [Indexed: 01/14/2023]
Abstract
A palladium-catalyzed N-H/B-H double activation of 1,2-dihydro-1,2-benzazaborines proceeded via cycloaddition with vinyl ethylene carbonate to produce polycyclic oxazaborolidines in 31-96 % yield. The key step in this process is the release of molecular hydrogen from a borate intermediate. Using a SPINOL-derived phosphoramidite as a chiral ligand, chiral oxazaborolidines were synthesized in good to high yields with excellent enantioselectivity (up to 95 % ee). The vinyl group of the resulting oxazaborolidine underwent metathesis, Heck reaction, and Wacker oxidation without affecting the oxazaborolidine framework.
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Affiliation(s)
- Taiki Morita
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho Midori-ku, Yokohama, 226-8503, Japan.,School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho Midori-ku, Yokohama, 226-8503, Japan
| | - Hiroki Murakami
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho Midori-ku, Yokohama, 226-8503, Japan
| | - Yasunobu Asawa
- School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho Midori-ku, Yokohama, 226-8503, Japan
| | - Hiroyuki Nakamura
- Laboratory for Chemistry and Life Science, Institute of Innovative Research, Tokyo Institute of Technology, 4259 Nagatsuta-cho Midori-ku, Yokohama, 226-8503, Japan.,School of Life Science and Technology, Tokyo Institute of Technology, 4259 Nagatsuta-cho Midori-ku, Yokohama, 226-8503, Japan
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4
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Trost BM, Mata G. Forging Odd-Membered Rings: Palladium-Catalyzed Asymmetric Cycloadditions of Trimethylenemethane. Acc Chem Res 2020; 53:1293-1305. [PMID: 32525684 DOI: 10.1021/acs.accounts.0c00152] [Citation(s) in RCA: 74] [Impact Index Per Article: 18.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The catalytic asymmetric synthesis of complex molecules has been the focus of our research program for several decades because such strategies have significant utility for the construction of chiral building blocks for drug development as well as the total synthesis of natural products. Cycloaddition reactions are very powerful transformations in organic synthesis providing access to highly functionalized motifs from simple starting materials. In concert with this central interest, four decades ago, we reported the palladium-catalyzed trimethylenemethane (TMM) cycloaddition for forging odd-membered ring systems. In recent years, we focused our attention on the development of powerful ligand scaffolds which enable the preparation of valuable products with complete control of chemo-, regio-, diastereo-, and enantioselectivity, thereby addressing several limitations in the field of palladium-catalyzed asymmetric cycloadditions. The first section of this Account will outline the discovery of a new class of highly modular pyrrolidine-based phosphoramidite and diamidophosphite chiral ligands which facilitate [3 + 2] cycloadditions of TMM donors, opening a new area in asymmetric construction of five-membered rings.The formation of the Pd-TMM zwitterionic intermediates is driven by the unique charge distribution of the cationic π-allyl motif, in which the most electropositive central carbon stabilizes the neighboring carbanion generated by either desilylation or deprotonation. The second section of this Account summarizes the scope of cycloadditions between Pd-TMM zwitterionic intermediates generated via desilylation and a variety of electron-deficient acceptors to access cyclopentanes, pyrrolidines and tetrahydrofurans. This section also includes the use of nitrile-, vinyl-, alkynyl- and allene-substituted TMM donors to rapidly generate cycloadducts with high molecular complexity. The extension of this strategy to include [6 + 3] cycloadditions and dearomative processes will also be presented. The third section will discuss a new generation of TMM donors substituted with electron-withdrawing groups such as nitrile, benzophenone imine, trifluoromethyl, and phosphonate, where the Pd-TMM zwitterionic intermediates are generated via deprotonation of the acidic C-H bond adjacent to the π-allyl motif. This new strategy has enabled the synthesis of heterocycles with increased numbers of functional groups in highly asymmetric and atom-economic fashion.Throughout this Account, we will describe the implementation of these transformations toward the rapid assembly of drug candidates and the total synthesis of natural products such as (-)-marcfortine C. We will also give details of mechanistic studies regarding relevant intermediates within the catalytic cycles of the different strategies, which allowed us to better understand the origin of selectivity with various donors.
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Affiliation(s)
- Barry M. Trost
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
| | - Guillaume Mata
- Department of Chemistry, Stanford University, 333 Campus Drive, Stanford, California 94305, United States
- Arcus Biosciences, Inc., 3928 Point Eden Way, Hayward, California 94545, United States
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5
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Reversal of diastereoselectivity in palladium-arene interaction directed hydrogenative desymmetrization of 1,3-diketones. Sci China Chem 2019. [DOI: 10.1007/s11426-019-9601-7] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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6
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Ardkhean R, Roth PMC, Maksymowicz RM, Curran A, Peng Q, Paton RS, Fletcher SP. Enantioselective Conjugate Addition Catalyzed by a Copper Phosphoramidite Complex: Computational and Experimental Exploration of Asymmetric Induction. ACS Catal 2017. [DOI: 10.1021/acscatal.7b01453] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Ruchuta Ardkhean
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Philippe M. C. Roth
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Rebecca M. Maksymowicz
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Alex Curran
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Qian Peng
- State
Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Robert S. Paton
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
| | - Stephen P. Fletcher
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
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7
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Frost GB, Serratore NA, Ogilvie JM, Douglas CJ. Mechanistic Model for Enantioselective Intramolecular Alkene Cyanoamidation via Palladium-Catalyzed C-CN Bond Activation. J Org Chem 2017; 82:3721-3726. [PMID: 28294618 PMCID: PMC5535300 DOI: 10.1021/acs.joc.7b00196] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We studied key aspects of the mechanism of Pd-catalyzed C-CN bond activation and intramolecular enantioselective alkene cyanoamidation. An Abboud-Abraham-Kamlet-Taft (AAKT) linear solvation energy relationship (LSER) model for enantioselectivity was established. We investigated the impact of Lewis acid (BPh3), Lewis base (DMPU), and no additives. BPh3 additive led to diminished enantioselectivity and differing results in 13CN crossover experiments, initial rate kinetics, and natural abundance 12C/13C kinetic isotope effect measurements. We propose two catalytic mechanisms to account for our experimental results. We propose that the DMPU/nonadditive pathway passes through a κ2-phosphoramidite-stabilized Pd+ intermediate, resulting in high enantioselectivity. BPh3 prevents the dissociation of CN-, leading to a less rigid κ2-phosphoramidite-neutral Pd intermediate.
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Affiliation(s)
| | | | - Jodi M. Ogilvie
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
| | - Christopher J. Douglas
- Department of Chemistry, University of Minnesota-Twin Cities, 207 Pleasant Street SE, Minneapolis, Minnesota 55455, United States
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8
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Peng Q, Paton RS. Catalytic Control in Cyclizations: From Computational Mechanistic Understanding to Selectivity Prediction. Acc Chem Res 2016; 49:1042-51. [PMID: 27137131 DOI: 10.1021/acs.accounts.6b00084] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
This Account describes the use of quantum-chemical calculations to elucidate mechanisms and develop catalysts to accomplish highly selective cyclization reactions. Chemistry is awash with cyclic molecules, and the creation of rings is central to organic synthesis. Cyclization reactions, the formation of rings by the reaction of two ends of a linear precursor, have been instrumental in the development of predictive models for chemical reactivity, from Baldwin's classification and rules for ring closure to the Woodward and Hoffmann rules based on the conservation of orbital symmetry and beyond. Ring formation provides a productive and fertile testing ground for the exploration of catalytic mechanisms and chemo-, regio-, diastereo-, and enantioselectivity using computational and experimental approaches. This Account is organized around case studies from our laboratory and illustrates the ways in which computations provide a deeper understanding of the mechanisms of catalysis in 5-endo cyclizations and how computational predictions can lead to the development of new catalysts for enhanced stereoselectivities in asymmetric cycloisomerizations. We have explored the extent to which several cation-directed 5-endo ring-closing reactions may be considered as electrocyclic and demonstrated that reaction pathways and magnetic parameters of transition structures computed using quantum chemistry are inconsistent with this notion, instead favoring a polar mechanism. A rare example of selectivity in favor of 5-endo-trig ring closure is shown to result from subtle substrate effects that bias the reactant conformation out-of-plane, limiting the involvement of cyclic conjugation. The mode of action of a chiral ammonium counterion was deduced via conformational sampling of the transition state assembly and involves coordination to the substrate via a series of nonclassical hydrogen bonds. We describe how computational mechanistic understanding has led directly to the discovery of new catalyst structures for enantioselective cycloisomerizations. Calculations have revealed that stepwise C-C bond formation and proton transfer dictate the exclusive endo diastereoselectivity of the intramolecular Michael addition to form 2-azabicyclo[3.3.1]nonane skeletons catalyzed by primary amines. These insights have led to development of a highly enantioselective catalyst with higher atom economy than previous generations. This Account also explores transition-metal-catalyzed cycloisomerizations, where our theoretical investigations have uncovered an unexpected reaction pathway in the [5 + 2] cycloisomerization of ynamides. This has led to the design of new phosphoramidite ligands to enable double-stereodifferentiating cycloisomerizations in both matched and mismatched catalyst-substrate settings. Computational understanding of the factors responsible for the regio-, enantio-, and diasterocontrol is shown to generate tangible predictions leading to an acceleration of catalyst development for selective cyclizations.
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Affiliation(s)
- Qian Peng
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
- Physical
and Theoretical Chemistry Laboratory, University of Oxford, South Parks
Road, Oxford OX1 3QZ, U.K
| | - Robert S. Paton
- Chemistry
Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, U.K
- Physical
and Theoretical Chemistry Laboratory, University of Oxford, South Parks
Road, Oxford OX1 3QZ, U.K
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9
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Straker RN, Peng Q, Mekareeya A, Paton RS, Anderson EA. Computational ligand design in enantio- and diastereoselective ynamide [5+2] cycloisomerization. Nat Commun 2016; 7:10109. [PMID: 26728968 PMCID: PMC4728367 DOI: 10.1038/ncomms10109] [Citation(s) in RCA: 103] [Impact Index Per Article: 12.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/10/2015] [Accepted: 11/03/2015] [Indexed: 12/21/2022] Open
Abstract
Transition metals can catalyse the stereoselective synthesis of cyclic organic molecules in a highly atom-efficient process called cycloisomerization. Many diastereoselective (substrate stereocontrol), and enantioselective (catalyst stereocontrol) cycloisomerizations have been developed. However, asymmetric cycloisomerizations where a chiral catalyst specifies the stereochemical outcome of the cyclization of a single enantiomer substrate--regardless of its inherent preference--are unknown. Here we show how a combined theoretical and experimental approach enables the design of a highly reactive rhodium catalyst for the stereoselective cycloisomerization of ynamide-vinylcyclopropanes to [5.3.0]-azabicycles. We first establish highly diastereoselective cycloisomerizations using an achiral catalyst, and then explore phosphoramidite-complexed rhodium catalysts in the enantioselective variant, where theoretical investigations uncover an unexpected reaction pathway in which the electronic structure of the phosphoramidite dramatically influences reaction rate and enantioselectivity. A marked enhancement of both is observed using the optimal theory-designed ligand, which enables double stereodifferentiating cycloisomerizations in both matched and mismatched catalyst-substrate settings.
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Affiliation(s)
- R. N. Straker
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - Q. Peng
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - A. Mekareeya
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - R. S. Paton
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
| | - E. A. Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford OX1 3TA, UK
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10
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Roy DK, De A, Panda S, Varghese B, Ghosh S. Chemistry of N,S-Heterocyclic Carbene and Metallaboratrane Complexes: A New η3-BCC-Borataallyl Complex. Chemistry 2015; 21:13732-8. [DOI: 10.1002/chem.201501014] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2015] [Indexed: 11/08/2022]
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11
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Shintani R, Kurata H, Nozaki K. Rhodium-catalyzed intramolecular alkynylsilylation of alkynes. Chem Commun (Camb) 2015; 51:11378-81. [DOI: 10.1039/c5cc04172d] [Citation(s) in RCA: 42] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Rhodium-catalyzed intramolecular alkynylsilylation of alkynes is described, including its enantioselective variant for the creation of a silicon stereogenic center.
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Affiliation(s)
- Ryo Shintani
- Department of Chemistry and Biotechnology
- Graduate School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Hiroki Kurata
- Department of Chemistry and Biotechnology
- Graduate School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
| | - Kyoko Nozaki
- Department of Chemistry and Biotechnology
- Graduate School of Engineering
- The University of Tokyo
- Bunkyo-ku
- Japan
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12
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Ficks A, Clegg W, Harrington RW, Higham LJ. Air-Stable Chiral Primary Phosphines: A Gateway to MOP Ligands with Previously Inaccessible Stereoelectronic Profiles. Organometallics 2014. [DOI: 10.1021/om500582w] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Arne Ficks
- School of Chemistry, Bedson Building, Newcastle University, Newcastle
upon Tyne, NE1 7RU, U.K
| | - William Clegg
- School of Chemistry, Bedson Building, Newcastle University, Newcastle
upon Tyne, NE1 7RU, U.K
| | - Ross W. Harrington
- School of Chemistry, Bedson Building, Newcastle University, Newcastle
upon Tyne, NE1 7RU, U.K
| | - Lee J. Higham
- School of Chemistry, Bedson Building, Newcastle University, Newcastle
upon Tyne, NE1 7RU, U.K
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13
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Falceto A, Carmona E, Alvarez S. Electronic and Structural Effects of Low-Hapticity Coordination of Arene Rings to Transition Metals. Organometallics 2014. [DOI: 10.1021/om5009583] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Andrés Falceto
- Departament
de Química Inorgànica and Institut de Química
Teòrica i Computacional, Universitat de Barcelona, Martí
i Franquès 1-11, 08028 Barcelona, Spain
| | - Ernesto Carmona
- Instituto
de Investigaciones Químicas and Departamento de Química
Inorgánica, Universidad de Sevilla−Consejo Superior de Investigaciones Científicas, Avenida Américo Vespucio 49, 41092 Sevilla, Spain
| | - Santiago Alvarez
- Departament
de Química Inorgànica and Institut de Química
Teòrica i Computacional, Universitat de Barcelona, Martí
i Franquès 1-11, 08028 Barcelona, Spain
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14
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Trost BM, Bringley DA. Enantioselective Synthesis of 2,2-Disubstituted Tetrahydrofurans: Palladium-Catalyzed [3+2] Cycloadditions of Trimethylenemethane with Ketones. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300616] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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15
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Trost BM, Bringley DA. Enantioselective synthesis of 2,2-disubstituted tetrahydrofurans: palladium-catalyzed [3+2] cycloadditions of trimethylenemethane with ketones. Angew Chem Int Ed Engl 2013; 52:4466-9. [PMID: 23495134 DOI: 10.1002/anie.201300616] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Indexed: 11/06/2022]
Affiliation(s)
- Barry M Trost
- Department of Chemistry, Stanford University, Stanford, CA 94305-5080, USA.
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17
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Molander GA, Wisniewski SR. Stereospecific cross-coupling of secondary organotrifluoroborates: potassium 1-(benzyloxy)alkyltrifluoroborates. J Am Chem Soc 2012; 134:16856-68. [PMID: 23025482 PMCID: PMC3481220 DOI: 10.1021/ja307861n] [Citation(s) in RCA: 159] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
Potassium 1-(alkoxy/acyloxy)alkyltrifluoroborates have been synthesized through a copper-catalyzed diboration of aldehydes and subsequent conversion of the resulting potassium 1-(hydroxy)alkyltrifluoroborates. The palladium-catalyzed Suzuki-Miyaura reaction employing the potassium 1-(benzyloxy)alkyltrifluoroborates with aryl and heteroaryl chlorides provides access to protected secondary alcohols in high yields. The β-hydride elimination pathway is avoided through use of the benzyl protecting group, which is proposed to stabilize the diorganopalladium intermediate by coordination of the arene to the metal center. This cross-coupling is stereospecific with complete retention of stereochemistry.
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Affiliation(s)
- Gary A Molander
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, USA.
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Linden A, Llovera L, Herrera J, Dorta R, Agrifoglio G, Dorta R. “Chiral-at-Metal” Hemilabile Nickel Complexes with a Latent d10-ML2 Configuration: Receiving Substrates with Open Arms. Organometallics 2012. [DOI: 10.1021/om300484z] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Anthony Linden
- Organisch-Chemisches
Institut, Universität Zürich, Winterthurerstrasse 190, 8057 Zurich,
Switzerland
| | - Ligia Llovera
- Centro de Quı́mica, Instituto Venezolano de Investigaciones Científicas, Altos
de Pipe, Venezuela
| | - Julio Herrera
- Departamento de Quı́mica, Universidad Simón Bolívar, Valle de Sartenejas, Caracas
1080A, Venezuela
| | - Reto Dorta
- School of Chemistry and Biochemistry, University of Western Australia, 35 Stirling Highway, Crawley 6009,
Australia
| | - Giuseppe Agrifoglio
- Departamento de Quı́mica, Universidad Simón Bolívar, Valle de Sartenejas, Caracas
1080A, Venezuela
| | - Romano Dorta
- Departamento de Quı́mica, Universidad Simón Bolívar, Valle de Sartenejas, Caracas
1080A, Venezuela
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19
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Al-Majid AMA, Barakat A, Mabkhot YN, Islam MS. Synthesis and characterization of privileged monodentate phosphoramidite ligands and chiral Brønsted acids derived from d-mannitol. Int J Mol Sci 2012; 13:2727-2743. [PMID: 22489121 PMCID: PMC3317684 DOI: 10.3390/ijms13032727] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2011] [Revised: 02/06/2012] [Accepted: 02/20/2012] [Indexed: 11/17/2022] Open
Abstract
The synthesis of several novel chiral phosphoramidite ligands (L1-L8) with C(2) symmetric, pseudo C(2) symmetric secondary amines and chiral Brønsted acids 1a,b has been achieved. These chiral auxiliaries were obtained from commercially available d-mannitol, and secondary amines in moderate to excellent yields. Excellent diastereoselectivites of ten chiral auxiliaries were obtained. The chiral phosphoramidite ligands and chiral Brønsted acids were fully characterized by spectroscopic methods.
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Affiliation(s)
- Abdullah Mohammed A. Al-Majid
- Department of Chemistry, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; E-Mails: (Y.N.M.); (M.S.I.)
| | - Assem Barakat
- Department of Chemistry, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; E-Mails: (Y.N.M.); (M.S.I.)
| | - Yahia Nasser Mabkhot
- Department of Chemistry, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; E-Mails: (Y.N.M.); (M.S.I.)
| | - Mohammad Shahidul Islam
- Department of Chemistry, Faculty of Science, King Saud University, P.O. Box 2455, Riyadh 11451, Saudi Arabia; E-Mails: (Y.N.M.); (M.S.I.)
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Ficks A, Hiney RM, Harrington RW, Gilheany DG, Higham LJ. MOP-phosphonites: A novel ligand class for asymmetric catalysis. Dalton Trans 2012; 41:3515-22. [DOI: 10.1039/c2dt12214f] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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He R, Song H, Wu L, Wei Z, Wang T. Synthesis and Characterization of Two New Chiral Copper(II) Compounds Constructed from (+)-N-Tosyl-L-glutamic Acid. CHINESE J CHEM 2011. [DOI: 10.1002/cjoc.201190186] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Urbaneja X, Mercier A, Besnard C, Kündig EP. Highly efficient desymmetrisation of a tricarbonylchromium 1,4-dibromonaphthalene complex by asymmetric Suzuki-Miyaura coupling. Chem Commun (Camb) 2011; 47:3739-41. [PMID: 21359364 DOI: 10.1039/c1cc10347d] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Access to planar chiral complexes has been sought by catalytic desymmetrisation of a prochiral complex via asymmetric Suzuki-Miyaura cross-coupling. High selectivities of up to 98% ee were achieved using a bulky chiral palladium catalyst.
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Affiliation(s)
- Xavier Urbaneja
- Department of Organic Chemistry, University of Geneva, Quai Ernest Ansermet 30, 1211 Geneva 4, Switzerland
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23
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Costin S, Widaman AK, Rath NP, Bauer EB. Synthesis and Structural Characterization of a Series of New Chiral‐at‐Metal Ruthenium Allenylidene Complexes. Eur J Inorg Chem 2011. [DOI: 10.1002/ejic.201001176] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Stephen Costin
- Department of Chemistry and Biochemistry, University of Missouri – St. Louis, 1, University Boulevard, St. Louis, MO 63121, USA
| | - Andria K. Widaman
- Department of Chemistry and Biochemistry, University of Missouri – St. Louis, 1, University Boulevard, St. Louis, MO 63121, USA
| | - Nigam P. Rath
- Department of Chemistry and Biochemistry, University of Missouri – St. Louis, 1, University Boulevard, St. Louis, MO 63121, USA
- Center for Nanoscience, University of Missouri – St. Louis, 1, University Boulevard, St. Louis, MO 63121, USA
| | - Eike B. Bauer
- Department of Chemistry and Biochemistry, University of Missouri – St. Louis, 1, University Boulevard, St. Louis, MO 63121, USA
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24
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Widaman AK, Rath NP, Bauer EB. New five-coordinate Ru(ii) phosphoramidite complexes and their catalytic activity in propargylic amination reactions. NEW J CHEM 2011. [DOI: 10.1039/c1nj20520j] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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25
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Shejwalkar P, Sedinkin SL, Bauer EB. New amino-dithiaphospholanes and phosphoramidodithioites and their rhodium and iridium complexes. Inorganica Chim Acta 2011. [DOI: 10.1016/j.ica.2010.11.006] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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26
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Mai DN, Wolfe JP. Asymmetric palladium-catalyzed carboamination reactions for the synthesis of enantiomerically enriched 2-(arylmethyl)- and 2-(alkenylmethyl)pyrrolidines. J Am Chem Soc 2010; 132:12157-9. [PMID: 20718417 DOI: 10.1021/ja106989h] [Citation(s) in RCA: 171] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The enantioselective synthesis of 2-(arylmethyl)- and 2-(alkenylmethyl)pyrrolidine derivatives via Pd-catalyzed alkene carboamination reactions is described. These transformations generate enantiomerically enriched products with up to 94% ee from readily available alkenyl or aryl bromides and N-boc-pent-4-enylamines. The application of this method to a concise asymmetric synthesis of (-)-tylophorine is also discussed.
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Affiliation(s)
- Duy N Mai
- Department of Chemistry, University of Michigan, 930 North University Avenue, Ann Arbor, Michigan 48109-1055, USA
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27
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He R, Song HH, Wei Z, Zhang JJ, Gao YZ. Coordination polymers with the chiral ligand N-p-tolylsulfonyl-l-glutamic acid: Influence of metal ions and different bipyridine ligands on structural chirality. J SOLID STATE CHEM 2010. [DOI: 10.1016/j.jssc.2010.07.005] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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28
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Drinkel E, Briceño A, Dorta R, Dorta R. Hemilabile P-Alkene Ligands in Chiral Rhodium and Copper Complexes: Catalytic Asymmetric 1,4 Additions to Enones. 2,. Organometallics 2010. [DOI: 10.1021/om100248u] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Emma Drinkel
- Organisch-Chemisches Institut (OCI), Universität Zürich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
| | - Alexander Briceño
- Centro de Química, Instituto Venezolano de Investigaciones Científicas (IVIC), Altos de Pipe, Venezuela
| | - Reto Dorta
- Organisch-Chemisches Institut (OCI), Universität Zürich, Winterthurerstrasse 190, CH-8057, Zurich, Switzerland
| | - Romano Dorta
- Departamento de Química, Universidad Simón Bolívar, Caracas 1080A, Venezuela
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29
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Mercier A, Urbaneja X, Yeo W, Chaudhuri P, Cumming G, House D, Bernardinelli G, Kündig E. Asymmetric Catalytic Hydrogenolysis of ArylHalide Bonds in Fused Arene Chromium and Ruthenium Complexes. Chemistry 2010; 16:6285-99. [DOI: 10.1002/chem.201000011] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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30
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Junge K, Wendt B, Enthaler S, Beller M. Palladium-Catalyzed Enantioselective Hydrosilylation of Aromatic Olefins. ChemCatChem 2010. [DOI: 10.1002/cctc.200900263] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Osswald T, Mikhel IS, Rüegger H, Butti P, Mezzetti A. Secondary ligand–metal interactions in rhodium(III) and iridium(III) phosphoramidite complexes. Inorganica Chim Acta 2010. [DOI: 10.1016/j.ica.2009.05.008] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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32
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Osswald T, Rüegger H, Mezzetti A. Secondary Interactions or Ligand Scrambling? Subtle Steric Effects Govern the Iridium(I) Coordination Chemistry of Phosphoramidite Ligands. Chemistry 2010; 16:1388-97. [DOI: 10.1002/chem.200902453] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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33
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Dalton DM, Oberg KM, Yu RT, Lee EE, Perreault S, Oinen ME, Pease ML, Malik G, Rovis T. Enantioselective rhodium-catalyzed [2 + 2 + 2] cycloadditions of terminal alkynes and alkenyl isocyanates: mechanistic insights lead to a unified model that rationalizes product selectivity. J Am Chem Soc 2009; 131:15717-28. [PMID: 19817441 PMCID: PMC2796191 DOI: 10.1021/ja905065j] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
This manuscript describes the development and scope of the asymmetric rhodium-catalyzed [2 + 2 + 2] cycloaddition of terminal alkynes and alkenyl isocyanates leading to the formation of indolizidine and quinolizidine scaffolds. The use of phosphoramidite ligands proved crucial for avoiding competitive terminal alkyne dimerization. Both aliphatic and aromatic terminal alkynes participate well, with product selectivity a function of both the steric and electronic character of the alkyne. Manipulation of the phosphoramidite ligand leads to tuning of enantio- and product selectivity, with a complete turnover in product selectivity seen with aliphatic alkynes when moving from Taddol-based to biphenol-based phosphoramidites. Terminal and 1,1-disubstituted olefins are tolerated with nearly equal efficacy. Examination of a series of competition experiments in combination with analysis of reaction outcome shed considerable light on the operative catalytic cycle. Through a detailed study of a series of X-ray structures of rhodium(cod)chloride/phosphoramidite complexes, we have formulated a mechanistic hypothesis that rationalizes the observed product selectivity.
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Affiliation(s)
- Derek M. Dalton
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523
| | - Kevin M. Oberg
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523
| | - Robert T. Yu
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523
| | - Ernest E. Lee
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523
| | - Stéphane Perreault
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523
| | - Mark Emil Oinen
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523
| | - Melissa L. Pease
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523
| | - Guillaume Malik
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523
| | - Tomislav Rovis
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523
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34
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Brück A, Ruhland K. Investigation of the Dynamic Solution Behavior of Chloro(diene)rhodium(I) Phosphine Complexes with a Pendant Unsaturated Heterocycle at Phosphorus (2-pyridyl, 2-imidazyl; diene = COD, NBD). Organometallics 2009. [DOI: 10.1021/om900324a] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andreas Brück
- Lehrstuhl für Chemische Physik und Materialwissenschaften, Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany
- Lehrstuhl für Anorganische Chemie, Department Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany
| | - Klaus Ruhland
- Lehrstuhl für Chemische Physik und Materialwissenschaften, Institut für Physik, Universität Augsburg, Universitätsstrasse 1, D-86159 Augsburg, Germany
- Lehrstuhl für Anorganische Chemie, Department Chemie, Technische Universität München, Lichtenbergstrasse 4, D-85747 Garching bei München, Germany
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35
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Shintani R, Nakatsu H, Takatsu K, Hayashi T. Rhodium-Catalyzed Asymmetric [5+2] Cycloaddition of Alkyne-Vinylcyclopropanes. Chemistry 2009; 15:8692-4. [PMID: 19637169 DOI: 10.1002/chem.200901463] [Citation(s) in RCA: 89] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ryo Shintani
- Department of Chemistry, Graduate School of Science, Kyoto University, Sakyo, Kyoto 606-8502, Japan.
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36
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Costin S, Rath NP, Bauer EB. Synthesis and structural characterization of new chiral mixed phosphine phosphoramidite complexes of ruthenium. Inorganica Chim Acta 2009. [DOI: 10.1016/j.ica.2008.09.003] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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37
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Costin S, Sedinkin SL, Bauer EB. The coordination chemistry and reactivity of amino-dithiaphospholanes with rhodium, iridium, and ruthenium. Tetrahedron Lett 2009. [DOI: 10.1016/j.tetlet.2008.12.034] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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38
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Hou GH, Xie JH, Yan PC, Zhou QL. Iridium-Catalyzed Asymmetric Hydrogenation of Cyclic Enamines. J Am Chem Soc 2009; 131:1366-7. [DOI: 10.1021/ja808358r] [Citation(s) in RCA: 140] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Guo-Hua Hou
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
| | - Jian-Hua Xie
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
| | - Pu-Cha Yan
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
| | - Qi-Lin Zhou
- State Key Laboratory and Institute of Elemento-organic Chemistry, Nankai University, Tianjin 300071, China
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39
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Zhang F, Fan QH. Synthesis and application of bulky phosphoramidites: highly effective monophosphorus ligands for asymmetric hydrosilylation of styrenes. Org Biomol Chem 2009; 7:4470-4. [DOI: 10.1039/b909334f] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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40
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Costin S, Rath N, Bauer E. Conversion of Propargylic Alcohols to β-Oxo Esters Catalyzed by Novel Ruthenium-Phosphoramidite Complexes. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800355] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Filipuzzi S, Männel E, Pregosin PS, Albinati A, Rizzato S, Veiros LF. Multinuclear NMR, X-ray, and DFT Studies on RhCl(diene)(phosphoramidite) Complexes. Organometallics 2008. [DOI: 10.1021/om800082c] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
| | | | | | | | | | - Luis F. Veiros
- Centro de Química Estrutural, Complexo I, Instituto Superior Técnico, Avenida Rovisco Pais 1, 1049-001 Lisbon, Portugal
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42
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Pregosin PS. Phosphorus–olefin chelation in coordinated atropisomeric chiral auxiliaries. Chem Commun (Camb) 2008:4875-84. [DOI: 10.1039/b807655c] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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