1
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Tian Q, Yin X, Sun R, Wu X, Li Y. The lower the better: Efficient carbonylative reactions under atmospheric pressure of carbon monoxide. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2022.214900] [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]
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2
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Das A, Waser J. Pd-catalyzed functionalization of alkenes and alkynes using removable tethers. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.133135] [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]
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3
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Rossolini T, Das A, Nicolai S, Waser J. Pd(II)-Catalyzed Aminoacetoxylation of Alkenes Via Tether Formation. Org Lett 2022; 24:5068-5072. [PMID: 35816449 PMCID: PMC9490825 DOI: 10.1021/acs.orglett.2c01838] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
A Pd-catalyzed method based on the use of a molecular
tether is
described for olefin difunctionalization. Enabled by an easily introduced
trifluoroacetaldehyde-derived tether, a simultaneous introduction
of oxygen and nitrogen heteroatoms across unsaturated carbon–carbon
bonds was achieved under oxidative conditions, most probably via high-valent
Pd intermediates. Good yields and high diastereoselectivity were obtained
with aryl-substituted alkenes, whereas nonterminal alkyl-substituted
olefins gave aza-Heck products. Tether cleavage under mild conditions
provided fast access to functionalized β-amino alcohols.
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Affiliation(s)
- Thomas Rossolini
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, EPFL, 1015 Lausanne, Switzerland
| | - Ashis Das
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, EPFL, 1015 Lausanne, Switzerland
| | - Stefano Nicolai
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, EPFL, 1015 Lausanne, Switzerland
| | - Jérôme Waser
- Laboratory of Catalysis and Organic Synthesis and National Centre of Competence in Research Catalysis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Federale de Lausanne, EPFL, 1015 Lausanne, Switzerland
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4
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Greenwood PDG, Grenet E, Waser J. Palladium-Catalyzed Carbo-Oxygenation of Propargylic Amines using in Situ Tether Formation. Chemistry 2019; 25:3010-3013. [PMID: 30620089 DOI: 10.1002/chem.201900020] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/2019] [Indexed: 11/07/2022]
Abstract
1,2-Amino alcohols and α-aminocarbonyls are frequently found in natural products, drugs, chiral auxiliaries, and catalysts. This work reports a new method for the palladium-catalyzed oxyalkynylation and oxyarylation of propargylic amines. The reaction is perfectly regioselective based on the in situ introduction of a hemiacetal tether derived from trifluoroacetaldehyde. cis-Selective carbo-oxygenation was achieved for terminal alkynes, whereas internal alkynes gave trans-carbo-oxygenation products. The obtained enol ethers could be easily transformed into 1,2-amino alcohols or α-amino ketones using hydrogenation or hydrolysis, respectively.
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Affiliation(s)
- Phillip D G Greenwood
- Laboratory of Catalysis and Organic Synthesis, EPFL SB ISIC LCSO, BCH 4306, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Erwann Grenet
- Laboratory of Catalysis and Organic Synthesis, EPFL SB ISIC LCSO, BCH 4306, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and Organic Synthesis, EPFL SB ISIC LCSO, BCH 4306, Ecole Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland
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5
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Muriel B, Orcel U, Waser J. Palladium-Catalyzed Carboamination of Allylic Alcohols Using a Trifluoroacetaldehyde-Derived Tether. Org Lett 2017; 19:3548-3551. [DOI: 10.1021/acs.orglett.7b01524] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Bastian Muriel
- Laboratory of Catalysis and
Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH
4306, 1015 Lausanne, Switzerland
| | - Ugo Orcel
- Laboratory of Catalysis and
Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH
4306, 1015 Lausanne, Switzerland
| | - Jerome Waser
- Laboratory of Catalysis and
Organic Synthesis, Institute of Chemical Sciences and Engineering, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH
4306, 1015 Lausanne, Switzerland
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6
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Orcel U, Waser J. In situ tether formation from amines and alcohols enabling highly selective Tsuji-Trost allylation and olefin functionalization. Chem Sci 2017; 8:32-39. [PMID: 28451147 PMCID: PMC5304619 DOI: 10.1039/c6sc04366f] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/30/2016] [Accepted: 11/02/2016] [Indexed: 01/01/2023] Open
Abstract
The use of tethers allows to overcome reactivity and selectivity issues often encountered with intermolecular reactions. Although tethers have been successfully applied for decades, their installation and removal usually requires additional steps. This minireview highlights the recent development of tethers that can be installed in situ on (homo)-allyl amines or alcohols for Tsuji-Trost allylation or double bond functionalization. In particular, the use of (hemi-)acetal tethers for highly regioselective and enantioselective Tsuji-Trost allylation was recently reported. Hydroamination of olefins starting from allylic amines could be achieved via a retro Cope-elimination using catalytic amount of an aldehyde for tether formation. Finally, bifunctionalizations of olefins were developed using either carbon dioxide or carbonyls/imines as tether precursors. These recent breakthroughs greatly enhanced the efficiency of the tethering approach for olefin functionalization, and will make it even more attractive for synthetic chemists in the future.
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Affiliation(s)
- Ugo Orcel
- Laboratory of Catalysis and Organic Synthesis , Ecole Polytechnique Fédérale de Lausanne , EPFL SB ISIC LCSO , BCH 4306 , 1015 Lausanne , Switzerland .
| | - Jérôme Waser
- Laboratory of Catalysis and Organic Synthesis , Ecole Polytechnique Fédérale de Lausanne , EPFL SB ISIC LCSO , BCH 4306 , 1015 Lausanne , Switzerland .
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7
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White PB, Jaworski JN, Zhu GH, Stahl SS. Diazafluorenone-Promoted Oxidation Catalysis: Insights into the Role of Bidentate Ligands in Pd-Catalyzed Aerobic Aza-Wacker Reactions. ACS Catal 2016; 6:3340-3348. [PMID: 27175308 DOI: 10.1021/acscatal.6b00953] [Citation(s) in RCA: 44] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
2,2'-Bipyridine (bpy), 1,10-phenanthroline (phen) and related bidentate ligands often inhibit homogeneous Pd-catalyzed aerobic oxidation reactions; however, certain derivatives, such as 4,5-diazafluoren-9-one (DAF), can promote catalysis. In order to gain insight into this divergent ligand behavior, eight different bpy- and phen-derived chelating ligands have been evaluated in Pd(OAc)2-catalyzed oxidative cyclization of (E)-4-hexenyltosylamide. Two of the ligands, DAF and 6,6'-dimethyl-2,2'-bipyridine (6,6'-Me2bpy), support efficient catalytic turnover, while the others strongly inhibit the reaction. DAF is especially effective and is the only ligand that exhibits "ligand-accelerated catalysis". Evidence suggests that the utility of DAF and 6,6'-Me2bpy originates from the ability of these ligands to access κ1-coordination modes via dissociation of one of the pyridyl rings. This hemilabile character is directly observed by NMR spectroscopy upon adding one equivalent of pyridine to solutions of 1:1 L/Pd(OAc)2 (L = DAF and 6,6'-Me2bpy), and is further supported by an X-ray crystal structure of Pd(py)(κ1-DAF)OAc2. DFT computational studies illuminate the influence of three different chelating ligands [DAF, 6,6'-Me2bpy, and 2,9-dimethyl-1,10-phenanthroline (2,9-Me2phen)] on the energetics of the aza-Wacker reaction pathway. The results show that DAF and 6,6'-Me2bpy destabilize the corresponding ground-state Pd(N~N)(OAc)2 complexes, while stabilizing the rate-limiting transition state for alkene insertion into a Pd-N bond. Interconversion between κ2- and κ1-coordination modes facilitate access to open coordination sites at the PdII center. The insights from these studies introduce new ligand concepts that could promote numerous other classes of Pd-catalyzed aerobic oxidation reaction.
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Affiliation(s)
- Paul B. White
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Jonathan N. Jaworski
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Geyunjian Harry Zhu
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Shannon S. Stahl
- Department
of Chemistry, University of Wisconsin—Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
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8
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Orcel U, Waser J. Palladium-catalyzed vicinal amino alcohols synthesis from allyl amines by in situ tether formation and carboetherification. Angew Chem Int Ed Engl 2015; 54:5250-4. [PMID: 25720966 DOI: 10.1002/anie.201500636] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Indexed: 11/06/2022]
Abstract
Vicinal amino alcohols are important structural motifs of bioactive compounds. Reported herein is an efficient method for their synthesis based on the palladium-catalyzed oxy-alkynylation, oxy-arylation, or oxy-vinylation of allylic amines. High regio- and stereoselectivity were ensured through the in situ formation of a hemiaminal tether using the cheap commercially available trifluoroacetaldehyde in its hemiacetal form. The obtained compounds are important building blocks, which can be orthogonally deprotected to give either free alcohols, amines, or terminal alkynes.
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Affiliation(s)
- Ugo Orcel
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL SB ISIC LCSO, BCH 4306, 1015 Lausanne (Switzerland) http://lcso.epfl.ch/
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9
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Orcel U, Waser J. Palladium-Catalyzed Vicinal Amino Alcohols Synthesis from Allyl Amines by In Situ Tether Formation and Carboetherification. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201500636] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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10
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Yang XH, Li K, Song RJ, Li JH. Room-Temperature Palladium-Catalyzed Intramolecular Oxidative Aminocarbonylation of Vinylic C(sp2)-H Bonds with Amines and CO. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301284] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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11
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Wu XF, Neumann H, Beller M. Palladium-catalyzed oxidative carbonylation reactions. CHEMSUSCHEM 2013; 6:229-241. [PMID: 23307763 DOI: 10.1002/cssc.201200683] [Citation(s) in RCA: 268] [Impact Index Per Article: 24.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/12/2012] [Indexed: 06/01/2023]
Abstract
Palladium-catalyzed coupling reactions have become a powerful tool for advanced organic synthesis. This type of reaction is of significant value for the preparation of pharmaceuticals, agrochemicals, as well as advanced materials. Both, academic as well as industrial laboratories continuously investigate new applications of the different methodologies. Clearly, this area constitutes one of the major topics in homogeneous catalysis and organic synthesis. Among the different palladium-catalyzed coupling reactions, several carbonylations have been developed and widely used in organic syntheses and are even applied in the pharmaceutical industry on ton-scale. Furthermore, methodologies such as the carbonylative Suzuki and Sonogashira reactions allow for the preparation of interesting building blocks, which can be easily refined further on. Although carbonylative coupling reactions of aryl halides have been well established, palladium-catalyzed oxidative carbonylation reactions are also interesting. Compared with the reactions of aryl halides, oxidative carbonylation reactions offer an interesting pathway. The oxidative addition step could be potentially avoided in oxidative reactions, but only few reviews exist in this area. In this Minireview, we summarize the recent development in the oxidative carbonylation reactions.
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Affiliation(s)
- Xiao-Feng Wu
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Campus, Hangzhou, Zhejiang Province, 310018, PR China.
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12
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Synthesis of Saturated Heterocycles via Metal-Catalyzed Alkene Carboamination or Carboalkoxylation Reactions. TOPICS IN HETEROCYCLIC CHEMISTRY 2013. [DOI: 10.1007/7081_2012_98] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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13
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Wu XF, Neumann H, Beller M. Synthesis of Heterocycles via Palladium-Catalyzed Carbonylations. Chem Rev 2012; 113:1-35. [DOI: 10.1021/cr300100s] [Citation(s) in RCA: 961] [Impact Index Per Article: 80.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Xiao-Feng Wu
- Department of Chemistry, Zhejiang
Sci-Tech University, Xiasha Campus, Hangzhou, Zhejiang Province, P.
R. China 310018
- Leibniz-Institut
für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
| | - Helfried Neumann
- Leibniz-Institut
für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
| | - Matthias Beller
- Leibniz-Institut
für
Katalyse e.V. an der Universität Rostock, Albert-Einstein-Strasse
29a, 18059 Rostock, Germany
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14
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15
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Majumdar K, Samanta S, Nandi RK, Chattopadhyay B. Palladium-catalyzed regioselective oxidative amination of alkenes: an efficient route to the synthesis of pyrrolocoumarin and pyrroloquinolone derivatives. Tetrahedron Lett 2010. [DOI: 10.1016/j.tetlet.2010.05.068] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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16
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Tsujihara T, Shinohara T, Takenaka K, Takizawa S, Onitsuka K, Hatanaka M, Sasai H. Enantioselective Intramolecular Oxidative Aminocarbonylation of Alkenylureas Catalyzed by Palladium−Spiro Bis(isoxazoline) Complexes. J Org Chem 2009; 74:9274-9. [DOI: 10.1021/jo901778a] [Citation(s) in RCA: 90] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Tetsuya Tsujihara
- Department of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Toshio Shinohara
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Kazuhiro Takenaka
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Shinobu Takizawa
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Kiyotaka Onitsuka
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
| | - Minoru Hatanaka
- Department of Medicinal and Organic Chemistry, School of Pharmacy, Iwate Medical University, Yahaba, Iwate 028-3694, Japan
| | - Hiroaki Sasai
- The Institute of Scientific and Industrial Research, Osaka University, Ibaraki, Osaka 567-0047, Japan
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17
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Beccalli EM, Broggini G, Martinelli M, Sottocornola S. C−C, C−O, C−N Bond Formation on sp2 Carbon by Pd(II)-Catalyzed Reactions Involving Oxidant Agents. Chem Rev 2007; 107:5318-65. [PMID: 17973536 DOI: 10.1021/cr068006f] [Citation(s) in RCA: 1051] [Impact Index Per Article: 61.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Egle M. Beccalli
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, and Dipartimento di Scienze Chimiche e Ambientali, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Gianluigi Broggini
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, and Dipartimento di Scienze Chimiche e Ambientali, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Michela Martinelli
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, and Dipartimento di Scienze Chimiche e Ambientali, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
| | - Silvia Sottocornola
- Istituto di Chimica Organica “A. Marchesini”, Facoltà di Farmacia, Università di Milano, via Venezian 21, 20133 Milano, Italy, and Dipartimento di Scienze Chimiche e Ambientali, Università dell'Insubria, via Valleggio 11, 22100 Como, Italy
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18
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Heumann A, Jens KJ, Réglier M. Palladium Complex Catalyzed Oxidation Reactions. PROGRESS IN INORGANIC CHEMISTRY 2007. [DOI: 10.1002/9780470166437.ch5] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/02/2022]
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19
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Minatti A, Muñiz K. Intramolecular aminopalladation of alkenes as a key step to pyrrolidines and related heterocycles. Chem Soc Rev 2007; 36:1142-52. [PMID: 17576481 DOI: 10.1039/b607474j] [Citation(s) in RCA: 366] [Impact Index Per Article: 21.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Palladium catalysis for the intramolecular amination of alkenes is a powerful approach in heterocycle synthesis. The initial common step in this approach consists of an aminopalladation reaction. This tutorial review describes the synthesis of 2-amino alkyl-palladium compounds and renders special attention on the subsequent manipulation of the alkyl-palladium group. By carefully choosing the appropriate conditions, a wide variety of different heterocyclic structures are accessible which arise from reactions such as hydroamination, aza-Heck coupling, aminocarbonylation or oxidative processes such as aza-Wacker reaction and 1,2-difunctionalization.
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Affiliation(s)
- Ana Minatti
- Department of Chemistry, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, Massachusetts 02139, USA
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20
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Zeni G, Larock RC. Synthesis of Heterocycles via Palladium π-Olefin and π-Alkyne Chemistry. Chem Rev 2004; 104:2285-309. [PMID: 15137792 DOI: 10.1021/cr020085h] [Citation(s) in RCA: 999] [Impact Index Per Article: 50.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Gilson Zeni
- Department of Chemistry, Iowa State University, Ames, Iowa 50011, USA
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21
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Shinohara T, Arai MA, Wakita K, Arai T, Sasai H. The first enantioselective intramolecular aminocarbonylation of alkenes promoted by Pd(II)-spiro bis(isoxazoline) catalyst. Tetrahedron Lett 2003. [DOI: 10.1016/s0040-4039(02)02650-3] [Citation(s) in RCA: 44] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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22
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Bates RW, Sa-Ei K. O-alkenyl hydroxylamines: a new concept for cyclofunctionalization. Org Lett 2002; 4:4225-7. [PMID: 12443064 DOI: 10.1021/ol026701d] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
[reaction: see text] Treatment of O-homoallylhydroxylamines with palladium(II) and copper(II) in the presence of a base, methanol, and carbon monoxide results in the formation of isooxazolidines. An electron-withdrawing group on the hydroxylamine nitrogen is essential. When carbamate groups are used the products are formed exclusively as their cis isomers.
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Affiliation(s)
- Roderick W Bates
- Laboratory of Medicinal Chemistry, Chulabhorn Research Institute, Vibahavadi-Rangsit Highway, Laksi, Bangkok 10210, Thailand.
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23
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Fix SR, Brice JL, Stahl SS. Efficient intramolecular oxidative amination of olefins through direct dioxygen-coupled palladium catalysis. Angew Chem Int Ed Engl 2002; 41:164-6. [PMID: 12491473 DOI: 10.1002/1521-3773(20020104)41:1<164::aid-anie164>3.0.co;2-b] [Citation(s) in RCA: 162] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shannon R Fix
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, 53706, USA
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24
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Fix SR, Brice JL, Stahl SS. Efficient Intramolecular Oxidative Amination of Olefins through Direct Dioxygen-Coupled Palladium Catalysis. Angew Chem Int Ed Engl 2002. [DOI: 10.1002/1521-3757(20020104)114:1<172::aid-ange172>3.0.co;2-y] [Citation(s) in RCA: 38] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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25
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26
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Affiliation(s)
- Thomas E. Müller
- Institut für Anorganische Chemie, Technische Universität München, Lichtenbergstrasse 4, 85747 Garching, Germany
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27
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Oh CY, Kim KS, Ham WH. A formal total synthesis of (±)-anatoxin-a by an intramolecular Pd-catalyzed aminocarbonylation reaction. Tetrahedron Lett 1998. [DOI: 10.1016/s0040-4039(98)00078-1] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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28
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Ham WH, Jung YH, Lee K, Oh CY, Lee KY. A formal total synthesis of (±)-ferruginine by Pd-catalyzed intramolecular aminocarbonylation. Tetrahedron Lett 1997. [DOI: 10.1016/s0040-4039(97)00575-3] [Citation(s) in RCA: 24] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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29
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Harayama H, Abe A, Sakado T, Kimura M, Fugami K, Tanaka S, Tamaru Y. Palladium(II)-Catalyzed Intramolecular Aminocarbonylation of endo-Carbamates under Wacker-Type Conditions. J Org Chem 1997; 62:2113-2122. [PMID: 11671516 DOI: 10.1021/jo961988b] [Citation(s) in RCA: 67] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Pd(II)-catalyzed intramolecular aminocarbonylation of olefins bearing many types of nitrogen nucleophiles has been examined under two typical conditions: acidic conditions [conditions A, typically PdCl(2) (0.1 equiv) and CuCl(2) (3.0 equiv) under 1 atm of CO at room temperature in methanol] and buffered conditions [conditions B, typically PdCl(2) (0.1 equiv) and CuCl(2) (2.3 equiv) under 1 atm of CO at 30 degrees C in trimethyl orthoacetate]. Among nitrogen nucleophiles, endo-carbamates 7 display distinctive reactivity: endo-carbamates 7a-k smoothly undergo intramolecular aminocarbonylation under conditions B to furnish 4-[(methoxycarbonyl)methyl]-2-oxazolidinones 8a-k in good yields, while they would not undergo the expected reaction under conditions A. Other nitrogen nucleophiles (exo-ureas 1, endo-ureas 3, exo-carbamates 5, and exo-tosylamides 9), on the other hand, satisfactorily undergo aminocarbonylation only under conditions A to give rise to 2, 4, 6, and 10, respectively, in good yields. Under conditions B, they are unreactive and provide either the expected products in poor yields or intractable mixtures of products. On the basis of this contrasting reactivity between endo-carbamates and other nitrogen nucleophiles, the chemoselective aminocarbonylation of 7l-o has been achieved; aminocarbonylation takes place at the endo-carbamate moieties to furnish 8l-o exclusively under conditions B, and aminocarbonylation occurs at the exo-carbamate, exo-urea, and exo-tosylamide moieties to yield 13a-d exclusively under conditions A.
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Affiliation(s)
- Hiroto Harayama
- Department of Applied Chemistry, Faculty of Engineering, Nagasaki University, 1-14 Bunnkyo, Nagasaki 852, Japan
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