1
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Butcher TW, Amberg WM, Hartwig JF. Transition‐Metal‐Catalyzed Monofluoroalkylation: Strategies for the Synthesis of Alkyl Fluorides by C−C Bond Formation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Trevor W. Butcher
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
| | - Willi M. Amberg
- Department of Chemistry and Applied Biosciences Laboratory of Organic Chemistry ETH Zϋrich 8093 Zϋrich Switzerland
| | - John F. Hartwig
- Department of Chemistry University of California, Berkeley Berkeley CA 94720 USA
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2
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Evolution in heterodonor P-N, P-S and P-O chiral ligands for preparing efficient catalysts for asymmetric catalysis. From design to applications. Coord Chem Rev 2021. [DOI: 10.1016/j.ccr.2021.214120] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
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3
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Butcher TW, Amberg WM, Hartwig JF. Transition-Metal-Catalyzed Monofluoroalkylation: Strategies for the Synthesis of Alkyl Fluorides by C-C Bond Formation. Angew Chem Int Ed Engl 2021; 61:e202112251. [PMID: 34658121 DOI: 10.1002/anie.202112251] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Indexed: 11/09/2022]
Abstract
Alkyl fluorides modulate the conformation, lipophilicity, metabolic stability, and p K a of compounds containing aliphatic motifs and, therefore, have been valuable for medicinal chemistry. Despite significant research in organofluorine chemistry, the synthesis of alkyl fluorides, especially chiral alkyl fluorides, remains a challenge. Most commonly, alkyl fluorides are prepared by the formation of C-F bonds (fluorination), and numerous strategies for nucleophilic, electrophilic, and radical fluorination have been reported in recent years. Although strategies to access alkyl fluorides by C-C bond formation (monofluoroalkylation) are inherently convergent and complexity-generating, they have studied less than methods based on fluorination. This Review provides an overview of recent developments in the synthesis of chiral (enantioenriched or racemic) secondary and tertiary alkyl fluorides by monofluoroalkylation catalyzed by transition-metal complexes. We expect this contribution will illuminate the potential of monofluoroalkylations to simplify the synthesis of complex alkyl fluorides and suggest further research directions in this growing field.
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Affiliation(s)
| | - Willi M Amberg
- University of California Berkeley, Chemistry, UNITED STATES
| | - John F Hartwig
- University of California, Department of Chemistry, 718 LATIMER HALL #1460, 94720-1460, Berkeley, UNITED STATES
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4
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Connon R, Roche B, Rokade BV, Guiry PJ. Further Developments and Applications of Oxazoline-Containing Ligands in Asymmetric Catalysis. Chem Rev 2021; 121:6373-6521. [PMID: 34019404 PMCID: PMC8277118 DOI: 10.1021/acs.chemrev.0c00844] [Citation(s) in RCA: 63] [Impact Index Per Article: 21.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2020] [Indexed: 12/27/2022]
Abstract
The chiral oxazoline motif is present in many ligands that have been extensively applied in a series of important metal-catalyzed enantioselective reactions. This Review aims to provide a comprehensive overview of the most significant applications of oxazoline-containing ligands reported in the literature starting from 2009 until the end of 2018. The ligands are classified not by the reaction to which their metal complexes have been applied but by the nature of the denticity, chirality, and donor atoms involved. As a result, the continued development of ligand architectural design from mono(oxazolines), to bis(oxazolines), to tris(oxazolines) and tetra(oxazolines) and variations thereof can be more easily monitored by the reader. In addition, the key transition states of selected asymmetric transformations will be given to illustrate the features that give rise to high levels of asymmetric induction. As a further aid to the reader, we summarize the majority of schemes with representative examples that highlight the variation in % yields and % ees for carefully selected substrates. This Review should be of particular interest to the experts in the field but also serve as a useful starting point to new researchers in this area. It is hoped that this Review will stimulate both the development/design of new ligands and their applications in novel metal-catalyzed asymmetric transformations.
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Affiliation(s)
- Robert Connon
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Brendan Roche
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
| | - Balaji V. Rokade
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
| | - Patrick J. Guiry
- Synthesis
and Solid State Pharmaceutical Centre, Centre for Synthesis and Chemical
Biology, School of Chemistry, University
College Dublin, Dublin
4, Ireland
- BiOrbic
Research Centre, Centre for Synthesis and Chemical Biology, School
of Chemistry, University College Dublin, Dublin 4, Ireland
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5
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Pàmies O, Margalef J, Cañellas S, James J, Judge E, Guiry PJ, Moberg C, Bäckvall JE, Pfaltz A, Pericàs MA, Diéguez M. Recent Advances in Enantioselective Pd-Catalyzed Allylic Substitution: From Design to Applications. Chem Rev 2021; 121:4373-4505. [PMID: 33739109 PMCID: PMC8576828 DOI: 10.1021/acs.chemrev.0c00736] [Citation(s) in RCA: 209] [Impact Index Per Article: 69.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2020] [Indexed: 12/30/2022]
Abstract
This Review compiles the evolution, mechanistic understanding, and more recent advances in enantioselective Pd-catalyzed allylic substitution and decarboxylative and oxidative allylic substitutions. For each reaction, the catalytic data, as well as examples of their application to the synthesis of more complex molecules, are collected. Sections in which we discuss key mechanistic aspects for high selectivity and a comparison with other metals (with advantages and disadvantages) are also included. For Pd-catalyzed asymmetric allylic substitution, the catalytic data are grouped according to the type of nucleophile employed. Because of the prominent position of the use of stabilized carbon nucleophiles and heteronucleophiles, many chiral ligands have been developed. To better compare the results, they are presented grouped by ligand types. Pd-catalyzed asymmetric decarboxylative reactions are mainly promoted by PHOX or Trost ligands, which justifies organizing this section in chronological order. For asymmetric oxidative allylic substitution the results are grouped according to the type of nucleophile used.
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Affiliation(s)
- Oscar Pàmies
- Universitat
Rovira i Virgili, Departament de
Química Física i Inorgànica, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Jèssica Margalef
- Universitat
Rovira i Virgili, Departament de
Química Física i Inorgànica, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
| | - Santiago Cañellas
- Discovery
Sciences, Janssen Research and Development, Janssen-Cilag, S.A. Jarama 75A, 45007, Toledo, Spain
| | - Jinju James
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Eric Judge
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre
for Synthesis and Chemical Biology, School of Chemistry, University College Dublin, Belfield, Dublin 4, Ireland
| | - Christina Moberg
- KTH
Royal Institute of Technology, Department of Chemistry, Organic Chemistry, SE 100 44 Stockholm, Sweden
| | - Jan-E. Bäckvall
- Department
of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE 106 91 Stockholm, Sweden
| | - Andreas Pfaltz
- Department
of Chemistry, University of Basel. St. Johanns-Ring 19, 4056 Basel, Switzerland
| | - Miquel A. Pericàs
- Institute
of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007 Tarragona, Spain
- Departament
de Química Inorgànica i Orgànica, Universitat de Barcelona. 08028 Barcelona, Spain
| | - Montserrat Diéguez
- Universitat
Rovira i Virgili, Departament de
Química Física i Inorgànica, C/Marcel·lí Domingo, 1, 43007 Tarragona, Spain
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6
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Melot R, Zuccarello M, Cavalli D, Niggli N, Devereux M, Bürgi T, Baudoin O. Palladium(0)‐Catalyzed Enantioselective Intramolecular Arylation of Enantiotopic Secondary C−H Bonds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202014605] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Romain Melot
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Marco Zuccarello
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Diana Cavalli
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Nadja Niggli
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Michael Devereux
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
| | - Thomas Bürgi
- University of Geneva Department of Physical Chemistry 30 Quai Ernest-Ansermet 1211 Geneva 4 Switzerland
| | - Olivier Baudoin
- University of Basel Department of Chemistry St. Johanns-Ring 19 4056 Basel Switzerland
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7
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Melot R, Zuccarello M, Cavalli D, Niggli N, Devereux M, Bürgi T, Baudoin O. Palladium(0)-Catalyzed Enantioselective Intramolecular Arylation of Enantiotopic Secondary C-H Bonds. Angew Chem Int Ed Engl 2021; 60:7245-7250. [PMID: 33325596 DOI: 10.1002/anie.202014605] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 12/14/2020] [Indexed: 11/10/2022]
Abstract
The enantioselective functionalization of nonactivated enantiotopic secondary C-H bonds is one of the greatest challenges in transition-metal-catalyzed C-H activation proceeding by an inner-sphere mechanism. Such reactions have remained elusive within the realm of Pd0 catalysis. Reported here is the unique reactivity profile of the IBiox ligand family in the Pd0 -catalyzed intramolecular arylation of such nonactivated secondary C-H bonds. Chiral C2 -symmetric IBiox ligands led to high enantioselectivities for a broad range of valuable indane products containing a tertiary stereocenter, as well as the arylation of secondary C-H bonds adjacent to amides. Depending on the amide substituents and upon control of reaction time, indanes containing labile tertiary stereocenters were also obtained with high enantioselectivities. Analysis of the steric maps of the IBiox ligands indicated that the level of enantioselectivity correlates with the difference between the two most occupied and the two less occupied space quadrants, and provided a blueprint for the design of even more efficient ligands.
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Affiliation(s)
- Romain Melot
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Marco Zuccarello
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Diana Cavalli
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Nadja Niggli
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Michael Devereux
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
| | - Thomas Bürgi
- University of Geneva, Department of Physical Chemistry, 30 Quai Ernest-Ansermet, 1211, Geneva 4, Switzerland
| | - Olivier Baudoin
- University of Basel, Department of Chemistry, St. Johanns-Ring 19, 4056, Basel, Switzerland
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8
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Imrich MR, Maichle-Mössmer C, Ziegler T. d
-Fructose Based Spiro-Fused PHOX Ligands: Palladium Complexes and Application in Catalysis. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900490] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Michael R. Imrich
- Institute of Organic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
| | | | - Thomas Ziegler
- Institute of Organic Chemistry; University of Tübingen; Auf der Morgenstelle 18 72076 Tübingen Germany
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9
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Wang G, Gibbons SK, Glueck DS, Sibbald C, Fleming JT, Higham LJ, Rheingold AL. Copper–Phosphido Intermediates in Cu(IPr)-Catalyzed Synthesis of 1-Phosphapyracenes via Tandem Alkylation/Arylation of Primary Phosphines. Organometallics 2018. [DOI: 10.1021/acs.organomet.8b00198] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Ge Wang
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratory, Hanover, New Hampshire 03755, United States
| | - Sarah K. Gibbons
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratory, Hanover, New Hampshire 03755, United States
| | - David S. Glueck
- Department of Chemistry, Dartmouth College, 6128 Burke Laboratory, Hanover, New Hampshire 03755, United States
| | - Connor Sibbald
- School of Chemistry, Bedson Building, Newcastle University, Newcastle upon Tyne NE1 7RU, U.K
| | - James T. Fleming
- 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
| | - Arnold L. Rheingold
- Department of Chemistry, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, United States
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10
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Craig RA, Smith RC, Roizen JL, Jones AC, Virgil SC, Stoltz BM. Development of a Unified Enantioselective, Convergent Synthetic Approach Toward the Furanobutenolide-Derived Polycyclic Norcembranoid Diterpenes: Asymmetric Formation of the Polycyclic Norditerpenoid Carbocyclic Core by Tandem Annulation Cascade. J Org Chem 2018; 83:3467-3485. [PMID: 29464957 PMCID: PMC5889334 DOI: 10.1021/acs.joc.7b02825] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An enantioselective and diastereoselective approach toward the synthesis of the tetracyclic scaffold of the furanobutenolide-derived polycyclic norditerpenoids is described. Focusing on synthetic efforts toward ineleganolide, the synthetic approach utilizes a palladium-catalyzed enantioselective allylic alkylation for the construction of the requisite chiral tertiary ether. A diastereoselective cyclopropanation-Cope rearrangement cascade enabled the convergent assembly of the ineleganolide [6,7,5,5]-tetracyclic scaffold. Investigation of substrates for this critical tandem annulation process is discussed along with synthetic manipulations of the [6,7,5,5]-tetracyclic scaffold and the attempted interconversion of the [6,7,5,5]-tetracyclic scaffold of ineleganolide to the isomeric [7,6,5,5]-core of scabrolide A and its naturally occurring isomers. Computational evaluation of ground-state energies of late-stage synthetic intermediates was used to guide synthetic development and aid in the investigation of the conformational rigidity of these highly constrained and compact polycyclic structures.
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Affiliation(s)
- Robert A. Craig
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Russell C. Smith
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Jennifer L. Roizen
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Amanda C. Jones
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Scott C. Virgil
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
| | - Brian M. Stoltz
- Warren and Katherine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, California 91125, United States
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11
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Mazloomi Z, Magre M, Del Valle E, Pericàs MA, Pàmies O, van Leeuwen PWNM, Diéguez M. Synthesis, Application and Kinetic Studies of Chiral Phosphite-Oxazoline Palladium Complexes as Active and Selective Catalysts in Intermolecular Heck Reactions. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701603] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Zahra Mazloomi
- Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/ Marcel⋅lí Domingo, 1 43007 Tarragona Spain
| | - Marc Magre
- Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/ Marcel⋅lí Domingo, 1 43007 Tarragona Spain
| | - Efrem Del Valle
- Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/ Marcel⋅lí Domingo, 1 43007 Tarragona Spain
| | - Miquel A. Pericàs
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology; Av. Països Catalans 16 43007 Tarragona Spain
- Departament de Química Inorgànica i Orgànica; Universitat de Barcelona; 08028 Barcelona Spain
| | - Oscar Pàmies
- Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/ Marcel⋅lí Domingo, 1 43007 Tarragona Spain
| | - Piet W. N. M. van Leeuwen
- LPCNO, Laboratoire de Physique et Chimie des Nano-Objets, INSA-Toulouse, 135; Avenue de Rangueil F-31077 Toulouse France
| | - Montserrat Diéguez
- Universitat Rovira i Virgili; Departament de Química Física i Inorgànica; C/ Marcel⋅lí Domingo, 1 43007 Tarragona Spain
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12
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Łastawiecka E, Flis A, Stankevič M, Greluk M, Słowik G, Gac W. P-Arylation of secondary phosphine oxides catalyzed by nickel-supported nanoparticles. Org Chem Front 2018. [DOI: 10.1039/c8qo00356d] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Nickel-supported nanoparticles were used as catalysts for ligand-free Hirao coupling between secondary phosphine oxides and aryl halides.
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Affiliation(s)
- Elżbieta Łastawiecka
- Department of Organic Chemistry
- Faculty of Chemistry
- Maria Curie-Sklodowska University
- Lublin 20-614
- Poland
| | - Anna Flis
- Department of Organic Chemistry
- Faculty of Chemistry
- Maria Curie-Sklodowska University
- Lublin 20-614
- Poland
| | - Marek Stankevič
- Department of Organic Chemistry
- Faculty of Chemistry
- Maria Curie-Sklodowska University
- Lublin 20-614
- Poland
| | - Magdalena Greluk
- Department of Chemical Technology
- Faculty of Chemistry
- Maria Curie-Skłodowska University
- 20-031 Lublin
- Poland
| | - Grzegorz Słowik
- Department of Chemical Technology
- Faculty of Chemistry
- Maria Curie-Skłodowska University
- 20-031 Lublin
- Poland
| | - Wojciech Gac
- Department of Chemical Technology
- Faculty of Chemistry
- Maria Curie-Skłodowska University
- 20-031 Lublin
- Poland
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13
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Tabey A, Berlande M, Hermange P, Fouquet E. Mechanistic and asymmetric investigations of the Au-catalysed cross-coupling between aryldiazonium salts and arylboronic acids using (P,N) gold complexes. Chem Commun (Camb) 2018; 54:12867-12870. [DOI: 10.1039/c8cc07530a] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Aryldiazonium salts and arylboronic acids were coupled via three different pathways from (P,N)–AuCl complexes, with enantiomeric excesses up to 26%.
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Affiliation(s)
- Alexis Tabey
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- UMR-CNRS 5255
- 33405 Talence Cedex
- France
| | - Murielle Berlande
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- UMR-CNRS 5255
- 33405 Talence Cedex
- France
| | - Philippe Hermange
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- UMR-CNRS 5255
- 33405 Talence Cedex
- France
| | - Eric Fouquet
- Univ. Bordeaux
- Institut des Sciences Moléculaires
- UMR-CNRS 5255
- 33405 Talence Cedex
- France
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14
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Padevět J, Schrems MG, Scheil R, Pfaltz A. NeoPHOX - a structurally tunable ligand system for asymmetric catalysis. Beilstein J Org Chem 2016; 12:1185-95. [PMID: 27559370 PMCID: PMC4979954 DOI: 10.3762/bjoc.12.114] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2016] [Accepted: 05/24/2016] [Indexed: 12/04/2022] Open
Abstract
A synthesis of new NeoPHOX ligands derived from serine or threonine has been developed. The central intermediate is a NeoPHOX derivative bearing a methoxycarbonyl group at the stereogenic center next to the oxazoline N atom. The addition of methylmagnesium chloride leads to a tertiary alcohol, which can be acylated or silylated to produce NeoPHOX ligands with different sterical demand. The new NeoPHOX ligands were tested in the iridium-catalyzed asymmetric hydrogenation and palladium-catalyzed allylic substitution. In both reactions high enantioselectivities were achieved, that were comparable to the enantioselectivities obtained with the up to now best NeoPHOX ligand derived from expensive tert-leucine.
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Affiliation(s)
- Jaroslav Padevět
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Marcus G Schrems
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Robin Scheil
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
| | - Andreas Pfaltz
- Department of Chemistry, University of Basel, St. Johanns-Ring 19, CH-4056 Basel, Switzerland
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15
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16
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Nottingham C, Benson R, Müller-Bunz H, Guiry PJ. Synthesis of Ferrocene Oxazoline N,O ligands and Their Application in Asymmetric Ethyl- and Phenylzinc Additions to Aldehydes. J Org Chem 2015; 80:10163-76. [DOI: 10.1021/acs.joc.5b01766] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Chris Nottingham
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Robert Benson
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Helge Müller-Bunz
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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17
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O’Reilly S, Aylward M, Keogh-Hansen C, Fitzpatrick B, McManus HA, Müller-Bunz H, Guiry PJ. Synthesis of Bis(oxazoline) Ligands Possessing C-5 gem-Disubstitution and Their Application in Asymmetric Friedel–Crafts Alkylations. J Org Chem 2015; 80:10177-86. [DOI: 10.1021/acs.joc.5b01767] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Steven O’Reilly
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Miriam Aylward
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Caoimhe Keogh-Hansen
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Brian Fitzpatrick
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Helen A. McManus
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Helge Müller-Bunz
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre
for Synthesis and
Chemical Biology, School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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18
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McCartney D, Nottingham C, Müller-Bunz H, Guiry PJ. Exploiting the gem-Disubstitution Effect in FcPHOX and HetPHOX P,N Ligands: Synthesis and Applications in Pd-Catalyzed Intermolecular Heck Reactions. J Org Chem 2015; 80:10151-62. [DOI: 10.1021/acs.joc.5b01764] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dennis McCartney
- Centre
for Synthesis and
Chemical Biology, UCD School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Chris Nottingham
- Centre
for Synthesis and
Chemical Biology, UCD School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Helge Müller-Bunz
- Centre
for Synthesis and
Chemical Biology, UCD School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
| | - Patrick J. Guiry
- Centre
for Synthesis and
Chemical Biology, UCD School of Chemistry and Chemical Biology, University College Dublin, Belfield, Dublin 4, Ireland
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19
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Craig RA, Stoltz BM. Synthesis and Exploration of Electronically Modified ( R)-5,5-Dimethyl-( p-CF 3) 3- i-PrPHOX in Palladium-Catalyzed Enantio- and Diastereoselective Allylic Alkylation: A Practical Alternative to ( R)-( p-CF 3) 3- t-BuPHOX. Tetrahedron Lett 2015; 56:4670-4673. [PMID: 26257445 DOI: 10.1016/j.tetlet.2015.06.039] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
The synthesis of the novel electronically modified phosphinooxazoline (PHOX) ligand, (R)-5,5-dimethyl-(p-CF3)3-i-PrPHOX, is described. The utility of this PHOX ligand is explored in both enantio- and diastereoselective palladium-catalyzed allylic alkylations. These investigations prove (R)-5,5-dimethyl-(p-CF3)3-i-PrPHOX to be an effective and cost-efficient alternative to electronically modified PHOX ligands derived from the prohibitively expensive (R)-t-leucine.
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Affiliation(s)
- Robert A Craig
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, United States
| | - Brian M Stoltz
- Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering Division of Chemistry and Chemical Engineering, California Institute of Technology, Pasadena, CA 91125, United States
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20
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Bayardon J, Jugé S. Efficient Stereoselective Synthesis of o-Functionalized P-Chirogenic Phosphines Applied to Asymmetric Catalysis. PHOSPHORUS SULFUR 2015. [DOI: 10.1080/10426507.2014.993760] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Jérôme Bayardon
- Institut de Chimie Moléculaire de l’Université de Bourgogne (ICMUB-StéréochIM), UMR CNRS 6302, 9 avenue A. Savary, Dijon Cedex, 21078, France
| | - Sylvain Jugé
- Institut de Chimie Moléculaire de l’Université de Bourgogne (ICMUB-StéréochIM), UMR CNRS 6302, 9 avenue A. Savary, Dijon Cedex, 21078, France
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21
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Bortoluzzi M, Marchetti F, Murrali MG, Pampaloni G, Zacchini S. The chlorinating behaviour of WCl6 towards α-aminoacids. Dalton Trans 2015; 44:8729-38. [DOI: 10.1039/c5dt00518c] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Abstract
WCl6 behaves as a selective chlorinating agent towards the carboxylic function of primary and secondary α-aminoacids. The initial formation of α-ammonium acylchloride salts may be followed by HCl elimination and, in the case of l-proline derived species, a clean cyclization reaction.
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Affiliation(s)
- Marco Bortoluzzi
- University of Venezia Ca’ Foscari
- Dipartimento di Scienze Molecolari e Nanosistemi
- I-30123 Venezia
- Italy
| | - Fabio Marchetti
- University of Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
| | - Maria Grazia Murrali
- University of Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
| | - Guido Pampaloni
- University of Pisa
- Dipartimento di Chimica e Chimica Industriale
- I-56124 Pisa
- Italy
| | - Stefano Zacchini
- University of Bologna
- Dipartimento di Chimica Industriale “Toso Montanari”
- I-40136 Bologna
- Italy
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22
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Wang W, Shen H, Wan XL, Chen QY, Guo Y. Enantioselective Pd-Catalyzed Allylation of Acyclic α-Fluorinated Ketones. J Org Chem 2014; 79:6347-53. [DOI: 10.1021/jo500923u] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Wengui Wang
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. of China
| | - Haiming Shen
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. of China
| | - Xiao-Long Wan
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. of China
| | - Qing-Yun Chen
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. of China
| | - Yong Guo
- Key
Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic
Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, P. R. of China
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23
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Wauters I, Debrouwer W, Stevens CV. Preparation of phosphines through C-P bond formation. Beilstein J Org Chem 2014; 10:1064-96. [PMID: 24991257 PMCID: PMC4077473 DOI: 10.3762/bjoc.10.106] [Citation(s) in RCA: 138] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2014] [Accepted: 04/09/2014] [Indexed: 12/20/2022] Open
Abstract
Phosphines are an important class of ligands in the field of metal-catalysis. This has spurred the development of new routes toward functionalized phosphines. Some of the most important C–P bond formation strategies were reviewed and organized according to the hybridization of carbon in the newly formed C–P bond.
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Affiliation(s)
- Iris Wauters
- Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium
| | - Wouter Debrouwer
- Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium
| | - Christian V Stevens
- Research Group SynBioC, Department of Sustainable Organic Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure links 653, 9000 Ghent, Belgium
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24
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Bennett NB, Duquette DC, Kim J, Liu WB, Marziale AN, Behenna DC, Virgil SC, Stoltz BM. Expanding insight into asymmetric palladium-catalyzed allylic alkylation of N-heterocyclic molecules and cyclic ketones. Chemistry 2013; 19:4414-8. [PMID: 23447555 PMCID: PMC3815597 DOI: 10.1002/chem.201300030] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2012] [Indexed: 11/08/2022]
Abstract
Eeny, meeny, miny ... enaminones! Lactams and imides have been shown to consistently provide enantioselectivities substantially higher than other substrate classes previously investigated in the palladium-catalyzed asymmetric decarboxylative allylic alkylation. Several new substrates have been designed to probe the contributions of electronic, steric, and stereoelectronic factors that distinguish the lactam/imide series as superior alkylation substrates (see scheme). These studies culminated in marked improvements on carbocyclic allylic alkylation substrates.
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Affiliation(s)
| | | | - Jimin Kim
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
| | - Wen-Bo Liu
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
| | - Alexander N. Marziale
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
| | - Douglas C. Behenna
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
| | - Scott C. Virgil
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
| | - Brian M. Stoltz
- Division of Chemistry and Chemical Engineering, California Institute of Technology, Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA 91125 (USA)
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25
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Stankevič M, Włodarczyk A. Efficient copper(I)-catalyzed coupling of secondary phosphine oxides with aryl halides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.10.064] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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26
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Guilbault AA, Basdevant B, Wanie V, Legault CY. Catalytic Enantioselective α-Tosyloxylation of Ketones Using Iodoaryloxazoline Catalysts: Insights on the Stereoinduction Process. J Org Chem 2012; 77:11283-95. [DOI: 10.1021/jo302393u] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Audrey-Anne Guilbault
- Department of Chemistry, University of Sherbrooke, 2500 boul. de l’Université,
Sherbrooke, Québec J1K 2R1, Canada
| | - Benoit Basdevant
- Department of Chemistry, University of Sherbrooke, 2500 boul. de l’Université,
Sherbrooke, Québec J1K 2R1, Canada
| | - Vincent Wanie
- Department of Chemistry, University of Sherbrooke, 2500 boul. de l’Université,
Sherbrooke, Québec J1K 2R1, Canada
| | - Claude Y. Legault
- Department of Chemistry, University of Sherbrooke, 2500 boul. de l’Université,
Sherbrooke, Québec J1K 2R1, Canada
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27
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Bayardon J, Laureano H, Diemer V, Dutartre M, Das U, Rousselin Y, Henry JC, Colobert F, Leroux FR, Jugé S. Stereoselective Synthesis of o-Bromo (or Iodo)aryl P-Chirogenic Phosphines Based on Aryne Chemistry. J Org Chem 2012; 77:5759-69. [DOI: 10.1021/jo300910w] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jérôme Bayardon
- Institut de Chimie Moléculaire
de l’Université de Bourgogne (ICMUB-StereochIM-UMR CNRS 6302), 9 avenue A. Savary BP47870, 21078
Dijon Cedex, France
| | - Hugo Laureano
- Institut de Chimie Moléculaire
de l’Université de Bourgogne (ICMUB-StereochIM-UMR CNRS 6302), 9 avenue A. Savary BP47870, 21078
Dijon Cedex, France
| | - Vincent Diemer
- Laboratoire
de Chimie Moléculaire
(UMR CNRS 7509), Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Mathieu Dutartre
- Institut de Chimie Moléculaire
de l’Université de Bourgogne (ICMUB-StereochIM-UMR CNRS 6302), 9 avenue A. Savary BP47870, 21078
Dijon Cedex, France
| | - Utpal Das
- Institut de Chimie Moléculaire
de l’Université de Bourgogne (ICMUB-StereochIM-UMR CNRS 6302), 9 avenue A. Savary BP47870, 21078
Dijon Cedex, France
| | - Yoann Rousselin
- Institut de Chimie Moléculaire
de l’Université de Bourgogne (ICMUB-StereochIM-UMR CNRS 6302), 9 avenue A. Savary BP47870, 21078
Dijon Cedex, France
| | | | - Françoise Colobert
- Laboratoire
de Chimie Moléculaire
(UMR CNRS 7509), Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Frédéric R. Leroux
- Laboratoire
de Chimie Moléculaire
(UMR CNRS 7509), Université de Strasbourg, ECPM, 25 rue Becquerel, 67087 Strasbourg, France
| | - Sylvain Jugé
- Institut de Chimie Moléculaire
de l’Université de Bourgogne (ICMUB-StereochIM-UMR CNRS 6302), 9 avenue A. Savary BP47870, 21078
Dijon Cedex, France
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28
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Diéguez M, Pàmies O. Asymmetric Intermolecular Mizoroki-Heck Reaction: From Phosphine/Phosphinite-Nitrogen to Phosphite-Nitrogen Ligands. Isr J Chem 2012. [DOI: 10.1002/ijch.201100100] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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29
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Huan F, Hu H, Huang Y, Chen Q, Guo Y. Michael Addition Reaction of Fluorinated Nitro Compounds. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201100412] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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30
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Behenna DC, Mohr JT, Sherden NH, Marinescu SC, Harned AM, Tani K, Seto M, Ma S, Novák Z, Krout MR, McFadden RM, Roizen JL, Enquist JA, White DE, Levine SR, Petrova KV, Iwashita A, Virgil SC, Stoltz BM. Enantioselective decarboxylative alkylation reactions: catalyst development, substrate scope, and mechanistic studies. Chemistry 2011; 17:14199-223. [PMID: 22083969 PMCID: PMC3365686 DOI: 10.1002/chem.201003383] [Citation(s) in RCA: 172] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2010] [Revised: 07/29/2011] [Indexed: 11/07/2022]
Abstract
α-Quaternary ketones are accessed through novel enantioselective alkylations of allyl and propargyl electrophiles by unstabilized prochiral enolate nucleophiles in the presence of palladium complexes with various phosphinooxazoline (PHOX) ligands. Excellent yields and high enantiomeric excesses are obtained from three classes of enolate precursor: enol carbonates, enol silanes, and racemic β-ketoesters. Each of these substrate classes functions with nearly identical efficiency in terms of yield and enantioselectivity. Catalyst discovery and development, the optimization of reaction conditions, the exploration of reaction scope, and applications in target-directed synthesis are reported. Experimental observations suggest that these alkylation reactions occur through an unusual inner-sphere mechanism involving binding of the prochiral enolate nucleophile directly to the palladium center.
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Affiliation(s)
| | | | - Nathaniel H. Sherden
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Smaranda C. Marinescu
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Andrew M. Harned
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Kousuke Tani
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Masaki Seto
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Sandy Ma
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Zoltán Novák
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Michael R. Krout
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Ryan M. McFadden
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Jennifer L. Roizen
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - John A. Enquist
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - David E. White
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Samantha R. Levine
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Krastina V. Petrova
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Akihiko Iwashita
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Scott C. Virgil
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
| | - Brian M. Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Blvd., MC 101-20, Pasadena, CA 91125 (USA)
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31
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Bélanger É, Pouliot MF, Courtemanche MA, Paquin JF. Design, Synthesis, and Applications of Potential Substitutes of t-Bu-Phosphinooxazoline in Pd-Catalyzed Asymmetric Transformations and Their Use for the Improvement of the Enantioselectivity in the Pd-Catalyzed Allylation Reaction of Fluorinated Allyl Enol Carbonates. J Org Chem 2011; 77:317-31. [DOI: 10.1021/jo2019653] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Étienne Bélanger
- Canada Research Chair
in Organic and Medicinal Chemistry,
Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, Canada G1V 0A6
| | - Marie-France Pouliot
- Canada Research Chair
in Organic and Medicinal Chemistry,
Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, Canada G1V 0A6
| | - Marc-André Courtemanche
- Canada Research Chair
in Organic and Medicinal Chemistry,
Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, Canada G1V 0A6
| | - Jean-François Paquin
- Canada Research Chair
in Organic and Medicinal Chemistry,
Département de chimie, Université Laval, 1045 avenue de la Médecine, Québec, QC, Canada G1V 0A6
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32
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Wöste TH, Oestreich M. BINAP versus BINAP(O) in Asymmetric Intermolecular Mizoroki-Heck Reactions: Substantial Effects on Selectivities. Chemistry 2011; 17:11914-8. [DOI: 10.1002/chem.201101695] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/03/2011] [Indexed: 11/07/2022]
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33
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Day JJ, McFadden RM, Virgil SC, Kolding H, Alleva JL, Stoltz BM. The catalytic enantioselective total synthesis of (+)-liphagal. Angew Chem Int Ed Engl 2011; 50:6814-8. [PMID: 21671325 PMCID: PMC3361906 DOI: 10.1002/anie.201101842] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2011] [Indexed: 11/11/2022]
Abstract
Ring a ding : The first catalytic enantioselective total synthesis of the meroterpenoid natural product (+)-liphagal is disclosed. The approach showcases a variety of technology including enantioselective enolate alkylation, a photochemical alkyne-alkene [2+2] reaction, microwave-assisted metal catalysis, and an intramolecular aryne capture cyclization reaction. Pivotal to the successful completion of the synthesis was a sequence involving ring expansion from a [6-5-4] tricycle to a [6-7] bicyclic core followed by stereoselective hydrogenation of a sterically occluded tri-substituted olefin to establish the trans homodecalin system found in the natural product.
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Affiliation(s)
- Joshua J. Day
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering and The Caltech Center for Catalysis and Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Boulevard, MC 101-20, Pasadena, CA 91125 (USA)
| | - Ryan M. McFadden
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering and The Caltech Center for Catalysis and Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Boulevard, MC 101-20, Pasadena, CA 91125 (USA)
| | - Scott C. Virgil
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering and The Caltech Center for Catalysis and Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Boulevard, MC 101-20, Pasadena, CA 91125 (USA)
| | - Helene Kolding
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering and The Caltech Center for Catalysis and Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Boulevard, MC 101-20, Pasadena, CA 91125 (USA)
| | - Jennifer L. Alleva
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering and The Caltech Center for Catalysis and Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Boulevard, MC 101-20, Pasadena, CA 91125 (USA)
| | - Brian M. Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering and The Caltech Center for Catalysis and Chemical Synthesis, Division of Chemistry and Chemical Engineering, California Institute of Technology, 1200 E. California Boulevard, MC 101-20, Pasadena, CA 91125 (USA)
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34
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Day JJ, McFadden RM, Virgil SC, Kolding H, Alleva JL, Stoltz BM. The Catalytic Enantioselective Total Synthesis of (+)-Liphagal. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201101842] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Podhajsky SM, Iwai Y, Cook-Sneathen A, Sigman MS. Asymmetric palladium-catalyzed hydroarylation of styrenes and dienes. Tetrahedron 2011; 67:4435-4441. [PMID: 21743752 DOI: 10.1016/j.tet.2011.02.027] [Citation(s) in RCA: 75] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Alkenes are desirable and highly versatile starting materials for organic transformations, and well-known substrates for palladium catalysis. Typically, these reactions result in the formation of a new alkene product via β-hydride elimination. In contrast to this scenario, our laboratory has been involved in the development of alkene hydro- and difunctionalization reactions, where β-hydride elimination can be controlled. We report herein the development of an asymmetric palladium-catalyzed hydroarylation, which yields diarylmethine products in up to 75% ee. Interestingly, a linear free energy relationship is observed between the steric bulk of the ligand within a certain range and the enantiomeric excess of the reaction.
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Affiliation(s)
- Susanne M Podhajsky
- Department of Chemistry, University of Utah, 315 South 1400 East, Salt Lake City, Utah 84112, United States
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36
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Wang Y, Vaismaa MJ, Hämäläinen AM, Tois JE, Franzén R. Utilization of IndPHOX-ligands in palladium-catalysed asymmetric allylic aminations. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.03.004] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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37
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38
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Dugal-Tessier J, Dake GR, Gates DP. Chiral Phosphaalkene−Oxazoline Ligands for the Palladium-Catalyzed Asymmetric Allylic Alkylation. Org Lett 2010; 12:4667-9. [DOI: 10.1021/ol1020652] [Citation(s) in RCA: 48] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Julien Dugal-Tessier
- Department of Chemistry, 2036 Main Mall, University of British Columbia, Vancouver, B.C., Canada, V6T 1Z1
| | - Gregory R. Dake
- Department of Chemistry, 2036 Main Mall, University of British Columbia, Vancouver, B.C., Canada, V6T 1Z1
| | - Derek P. Gates
- Department of Chemistry, 2036 Main Mall, University of British Columbia, Vancouver, B.C., Canada, V6T 1Z1
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Chaux F, Frynas S, Laureano H, Salomon C, Morata G, Auclair ML, Stephan M(M, Merdès R, Richard P, Ondel-Eymin MJ, Henry JC, Bayardon J, Darcel C, Jugé S. Enantiodivergent synthesis of P-chirogenic phosphines. CR CHIM 2010. [DOI: 10.1016/j.crci.2010.06.001] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Lenze M, Sedinkin SL, Rath NP, Bauer EB. New indenyl phosphinooxazoline complexes of iron and their catalytic activity in the Mukaiyama aldol reaction. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.03.090] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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Liu Y, Shang D, Zhou X, Zhu Y, Lin L, Liu X, Feng X. AgAsF6/Sm(OTf)3 promoted reversal of enantioselectivity for the asymmetric Friedel-Crafts alkylations of indoles with beta,gamma-unsaturated alpha-ketoesters. Org Lett 2010; 12:180-3. [PMID: 19938840 DOI: 10.1021/ol902587t] [Citation(s) in RCA: 84] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The first example of central metal controlled reversal of enantioselectivity in asymmetric Friedel-Crafts alkylation of indoles and beta,gamma-unsaturated alpha-ketoesters has been developed. Using the same chiral starting material derived N,N'-dioxides 1a and 1b as ligands, various indole esters 4 were obtained in good to excellent yields and enantioselectivities. The reaction also featured mild reaction conditions and remarkably low catalyst loading (down to 0.01 mol %).
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Affiliation(s)
- Yanling Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, PR China
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Zuend SJ, Coughlin MP, Lalonde MP, Jacobsen EN. Scaleable catalytic asymmetric Strecker syntheses of unnatural alpha-amino acids. Nature 2009; 461:968-70. [PMID: 19829379 PMCID: PMC2778849 DOI: 10.1038/nature08484] [Citation(s) in RCA: 275] [Impact Index Per Article: 18.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2009] [Accepted: 08/28/2009] [Indexed: 11/09/2022]
Abstract
Alpha-amino acids are the building blocks of proteins and are widely used as components of medicinally active molecules and chiral catalysts. Efficient chemo-enzymatic methods for the synthesis of enantioenriched alpha-amino acids have been developed, but it is still a challenge to obtain non-natural amino acids. Alkene hydrogenation is broadly useful for the enantioselective catalytic synthesis of many classes of amino acids, but it is not possible to obtain alpha-amino acids bearing aryl or quaternary alkyl alpha-substituents using this method. The Strecker synthesis-the reaction of an imine or imine equivalent with hydrogen cyanide, followed by nitrile hydrolysis-is an especially versatile chemical method for the synthesis of racemic alpha-amino acids. Asymmetric Strecker syntheses using stoichiometric amounts of a chiral reagent have been applied successfully on gram-to-kilogram scales, yielding enantiomerically enriched alpha-amino acids. In principle, Strecker syntheses employing sub-stoichiometric quantities of a chiral reagent could provide a practical alternative to these approaches, but the reported catalytic asymmetric methods have seen limited use on preparative scales (more than a gram). The limited utility of existing catalytic methods may be due to several important factors, including the relatively complex and precious nature of the catalysts and the requisite use of hazardous cyanide sources. Here we report a new catalytic asymmetric method for the syntheses of highly enantiomerically enriched non-natural amino acids using a simple chiral amido-thiourea catalyst to control the key hydrocyanation step. This catalyst is robust, without sensitive functional groups, so it is compatible with aqueous cyanide salts, which are safer and easier to handle than other cyanide sources; this makes the method adaptable to large-scale synthesis. We have used this new method to obtain enantiopure amino acids that are not readily prepared by enzymatic methods or by chemical hydrogenation.
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Affiliation(s)
- Stephan J Zuend
- Harvard University, Department of Chemistry and Chemical Biology, Cambridge, Massachusetts 02138, USA
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