1
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Toda Y, Yoshida T, Arisue K, Fukushima K, Esaki H, Kikuchi A, Suga H. Enantioselective Protonation of Cyclic Carbonyl Ylides by Chiral Lewis Acid Assisted Alcohols. Chemistry 2021; 27:10578-10582. [PMID: 34002420 DOI: 10.1002/chem.202101491] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2021] [Indexed: 11/09/2022]
Abstract
Chiral Lewis acid-catalyzed asymmetric alcohol addition reactions to cyclic carbonyl ylides generated from N-(α-diazocarbonyl)-2-oxazolidinones featuring a dual catalytic system are reported. Construction of a chiral quaternary heteroatom-substituted carbon center was accomplished in which the unique heterobicycles were obtained in good yields with high stereoselection. The alcohol adducts were successfully converted to optically active oxazolidine-2,4-diones by hydrolysis. Mechanistic studies by DFT calculations revealed that alcohols could be activated by Lewis acids, enabling enantioselective protonation of the carbonyl ylides.
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Affiliation(s)
- Yasunori Toda
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, 380-8553, Nagano, Japan
| | - Takayuki Yoshida
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, 380-8553, Nagano, Japan
| | - Kaoru Arisue
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, 380-8553, Nagano, Japan
| | - Kazuaki Fukushima
- Department of Chemistry, Hyogo College of Medicine, 1-1 Mukogawa-Cho, 663-8501, Nishinomiya, Hyogo, Japan
| | - Hiroyoshi Esaki
- Department of Chemistry, Hyogo College of Medicine, 1-1 Mukogawa-Cho, 663-8501, Nishinomiya, Hyogo, Japan
| | - Ayaka Kikuchi
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, 380-8553, Nagano, Japan
| | - Hiroyuki Suga
- Department of Materials Chemistry, Faculty of Engineering, Shinshu University, 4-17-1 Wakasato, 380-8553, Nagano, Japan
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2
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Murakami H, Yamada A, Michigami K, Takemoto Y. Novel Aza‐Michael Addition‐Asymmetric Protonation to α,β‐Unsaturated Carboxylic Acids with Chiral Thiourea‐Boronic Acid Hybrid Catalysts. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100145] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Hiroki Murakami
- Graduate School of Pharmaceutical Sciences Kyoto university 46–29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Ayano Yamada
- Graduate School of Pharmaceutical Sciences Kyoto university 46–29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Kenichi Michigami
- Graduate School of Pharmaceutical Sciences Kyoto university 46–29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
| | - Yoshiji Takemoto
- Graduate School of Pharmaceutical Sciences Kyoto university 46–29 Shimoadachi-cho, Yoshida, Sakyo-ku Kyoto 606-8501 Japan
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3
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Das S, Hu Q, Kondoh A, Terada M. Enantioselective Protonation: Hydrophosphinylation of 1,1-Vinyl Azaheterocycle N-Oxides Catalyzed by Chiral Bis(guanidino)iminophosphorane Organosuperbase. Angew Chem Int Ed Engl 2021; 60:1417-1422. [PMID: 33030798 DOI: 10.1002/anie.202012492] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2020] [Indexed: 12/30/2022]
Abstract
Enantioselective protonation by hydrophosphinylation of diarylphosphine oxides with 2-vinyl azaheterocycle N-oxide derivatives was demonstrated using chiral bis(guanidino)iminophosphorane as the higher-order organosuperbase catalyst. It was confirmed by several control experiments that a chiral weak conjugate acid of the chiral bis(guanidino)iminophosphorane, instead of achiral diarylphosphine oxides, directly functioned as the proton source to afford the corresponding product in a highly enantioselective manner in most cases. Enantioselective protonation by a weak conjugate acid generated from the higher-order organosuperbase would broaden the scope of enantioselective reaction systems because of utilization of a range of less acidic pronucleophiles. This method is highlighted by the valuable synthesis of a series of chiral P,N-ligands for chiral metal complexes through the reduction of phosphine oxide and N-oxide units of the corresponding product without loss of enantiomeric purity.
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Affiliation(s)
- Saikat Das
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Qiupeng Hu
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Azusa Kondoh
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
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4
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Das S, Hu Q, Kondoh A, Terada M. Enantioselective Protonation: Hydrophosphinylation of 1,1‐Vinyl Azaheterocycle
N
‐Oxides Catalyzed by Chiral Bis(guanidino)iminophosphorane Organosuperbase. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202012492] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Saikat Das
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Qiupeng Hu
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Azusa Kondoh
- Research and Analytical Center for Giant Molecules Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
| | - Masahiro Terada
- Department of Chemistry Graduate School of Science Tohoku University Aramaki, Aoba-ku Sendai 980-8578 Japan
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5
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Chang X, Zhang J, Zhang Q, Guo C. Merging Electrosynthesis and Bifunctional Squaramide Catalysis in the Asymmetric Detrifluoroacetylative Alkylation Reactions. Angew Chem Int Ed Engl 2020; 59:18500-18504. [PMID: 32652737 DOI: 10.1002/anie.202006903] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2020] [Revised: 07/07/2020] [Indexed: 11/07/2022]
Abstract
An enantioselective bifunctional squaramide-catalyzed detrifluoroacetylative alkylation reaction has been developed under electrochemical conditions. The unified strategy based on this key tandem methodology has been divergently explored for the asymmetric synthesis of fluorine-containing target molecules with good stereocontrol (up to 95 % ee). Furthermore, this asymmetric catalytic reaction combines the benefits of electrosynthesis and organocatalysis for the preparation of biologically relevant products containing C-F tertiary stereogenic centers.
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Affiliation(s)
- Xihao Chang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Jiayin Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Qinglin Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
| | - Chang Guo
- Hefei National Laboratory for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, 230026, China
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6
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Chang X, Zhang J, Zhang Q, Guo C. Merging Electrosynthesis and Bifunctional Squaramide Catalysis in the Asymmetric Detrifluoroacetylative Alkylation Reactions. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006903] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xihao Chang
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China
| | - Jiayin Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China
| | - Qinglin Zhang
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China
| | - Chang Guo
- Hefei National Laboratory for Physical Sciences at the Microscale University of Science and Technology of China Hefei 230026 China
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Wübbolt S, Cheong CB, Frost JR, Christensen KE, Donohoe TJ. A Vinyl Cyclopropane Ring Expansion and Iridium-Catalyzed Hydrogen Borrowing Cascade. Angew Chem Int Ed Engl 2020; 59:11339-11344. [PMID: 32314851 PMCID: PMC7463175 DOI: 10.1002/anie.202003614] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/10/2020] [Revised: 03/31/2020] [Indexed: 12/18/2022]
Abstract
A vinyl cyclopropane rearrangement embedded in an iridium-catalyzed hydrogen borrowing reaction enabled the formation of substituted stereo-defined cyclopentanes from Ph* methyl ketone and cyclopropyl alcohols. Mechanistic studies provide evidence for the ring-expansion reaction being the result of a cascade based on oxidation of the cyclopropyl alcohols, followed by aldol condensation with the pentamethyl phenyl-substituted ketone to form an enone containing the vinyl cyclopropane. Subsequent single electron transfer (SET) to this system initiates a rearrangement, and the catalytic cycle is completed by reduction of the new enone. This process allows for the efficient formation of diversely substituted cyclopentanes as well as the construction of complex bicyclic carbon skeletons containing up to four contiguous stereocentres, all with high diastereoselectivity.
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Affiliation(s)
- Simon Wübbolt
- Chemistry Research LaboratoryUniversity of OxfordOxfordOX1 3TAUK
| | | | - James R. Frost
- Chemistry Research LaboratoryUniversity of OxfordOxfordOX1 3TAUK
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8
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Wübbolt S, Cheong CB, Frost JR, Christensen KE, Donohoe TJ. A Vinyl Cyclopropane Ring Expansion and Iridium‐Catalyzed Hydrogen Borrowing Cascade. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202003614] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Simon Wübbolt
- Chemistry Research Laboratory University of Oxford Oxford OX1 3TA UK
| | - Choon Boon Cheong
- Chemistry Research Laboratory University of Oxford Oxford OX1 3TA UK
| | - James R. Frost
- Chemistry Research Laboratory University of Oxford Oxford OX1 3TA UK
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9
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Mandrelli F, Blond A, James T, Kim H, List B. Deracemizing α‐Branched Carboxylic Acids by Catalytic Asymmetric Protonation of Bis‐Silyl Ketene Acetals with Water or Methanol. Angew Chem Int Ed Engl 2019; 58:11479-11482. [DOI: 10.1002/anie.201905623] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2019] [Indexed: 11/09/2022]
Affiliation(s)
- Francesca Mandrelli
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Aurélie Blond
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Thomas James
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Hyejin Kim
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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10
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Mandrelli F, Blond A, James T, Kim H, List B. Deracemisierung von α‐verzweigten Carbonsäuren durch katalytische asymmetrische Protonierung von Bis‐Silylketenacetalen mit Wasser oder Methanol. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201905623] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Francesca Mandrelli
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Aurélie Blond
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Thomas James
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Hyejin Kim
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
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11
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Legros F, Martzel T, Brière JF, Oudeyer S, Levacher V. Organocatalytic Enantioselective Decarboxylative Protonation Reaction of Meldrum's Acid Derivatives under PTC Conditions. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800331] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Fabien Legros
- Normandie Univ; UNIROUEN, INSA; Rouen; CNRS, COBRA; 76000 Rouen France
| | - Thomas Martzel
- Normandie Univ; UNIROUEN, INSA; Rouen; CNRS, COBRA; 76000 Rouen France
| | | | - Sylvain Oudeyer
- Normandie Univ; UNIROUEN, INSA; Rouen; CNRS, COBRA; 76000 Rouen France
| | - Vincent Levacher
- Normandie Univ; UNIROUEN, INSA; Rouen; CNRS, COBRA; 76000 Rouen France
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12
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Yu X, Hu J, Shen Z, Zhang H, Gao JM, Xie W. Stereospecific Construction of Contiguous Quaternary All-Carbon Centers by Oxidative Ring Contraction. Angew Chem Int Ed Engl 2016; 56:350-353. [DOI: 10.1002/anie.201609975] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2016] [Indexed: 11/07/2022]
Affiliation(s)
- Xin Yu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology; School of Chemistry & Pharmacy; Northwest A&F University; 22 Xinong Road Yangling 712100 Shaanxi China
- Shanghai University; Shanghai 200444 China
| | - Jiadong Hu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology; School of Chemistry & Pharmacy; Northwest A&F University; 22 Xinong Road Yangling 712100 Shaanxi China
| | - Zhigao Shen
- Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; Shanghai 200032 China
| | - Hui Zhang
- Shanghai University; Shanghai 200444 China
| | - Jin-Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology; School of Chemistry & Pharmacy; Northwest A&F University; 22 Xinong Road Yangling 712100 Shaanxi China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology; School of Chemistry & Pharmacy; Northwest A&F University; 22 Xinong Road Yangling 712100 Shaanxi China
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13
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Yu X, Hu J, Shen Z, Zhang H, Gao J, Xie W. Stereospecific Construction of Contiguous Quaternary All‐Carbon Centers by Oxidative Ring Contraction. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201609975] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Xin Yu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology School of Chemistry & Pharmacy Northwest A&F University 22 Xinong Road Yangling 712100 Shaanxi China
- Shanghai University Shanghai 200444 China
| | - Jiadong Hu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology School of Chemistry & Pharmacy Northwest A&F University 22 Xinong Road Yangling 712100 Shaanxi China
| | - Zhigao Shen
- Shanghai Institute of Organic Chemistry Chinese Academy of Sciences Shanghai 200032 China
| | - Hui Zhang
- Shanghai University Shanghai 200444 China
| | - Jin‐Ming Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology School of Chemistry & Pharmacy Northwest A&F University 22 Xinong Road Yangling 712100 Shaanxi China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology School of Chemistry & Pharmacy Northwest A&F University 22 Xinong Road Yangling 712100 Shaanxi China
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14
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Germain N, Alexakis A. Formation of Contiguous Quaternary and Tertiary Stereocenters by Sequential Asymmetric Conjugate Addition of Grignard Reagents to 2-Substituted Enones and Mg-Enolate Trapping. Chemistry 2015; 21:8597-606. [DOI: 10.1002/chem.201500292] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2015] [Indexed: 11/11/2022]
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15
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Zhang J, Zhang Y, Liu X, Guo J, Cao W, Lin L, Feng X. Enantioselective Protonation by Aza-Michael Reaction between Pyrazoles and α-Substituted Vinyl Ketones. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400616] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Rousseau G, Lebeuf R, Schenk K, Castet F, Robert F, Landais Y. Base-catalyzed intramolecular hydroamination of cyclohexa-2,5-dienes: insights into the mechanism through DFT calculations and application to the total synthesis of epi-elwesine. Chemistry 2014; 20:14771-82. [PMID: 25223607 DOI: 10.1002/chem.201403662] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2014] [Revised: 07/10/2014] [Indexed: 11/08/2022]
Abstract
The base-catalyzed intramolecular hydroamination of 1-ethylaminocyclohexa-2,5-dienes is described. The transformation proceeds through isomerization of the cyclohexa-1,4-dienyl fragment into the corresponding conjugated 1,3-diene prior to the hydroamination step. Attaching a chiral glycinol ether auxiliary on the amino group allows the protonation to occur with complete diastereocontrol. The resulting lithium amide then adds onto the 1,3-dienyl moiety, affording the desired fused pyrrolidine ring along with the corresponding lithium allylic anion. Protonation of the latter then proceeds with high regiocontrol to favor the resulting allylic amines. In contrast, when the reaction was performed on primary amines, fused pyrrolidines bearing a homoallylic amino group were obtained. The stereochemical course of the process and determination of the reaction pathways were established based on calculations performed at the DFT level. Finally, application of the methodology to the enantioselective synthesis of (+)-epi-elwesine, a crinane alkaloid, is described.
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Affiliation(s)
- Géraldine Rousseau
- ISM, UMR 5255, University of Bordeaux and CNRS, 351, Cours de la liberation, 33400 Talence Cedex (France)
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Jia S, Xing D, Zhang D, Hu W. Catalytic Asymmetric Functionalization of Aromatic CH Bonds by Electrophilic Trapping of Metal-Carbene-Induced Zwitterionic Intermediates. Angew Chem Int Ed Engl 2014; 53:13098-101. [DOI: 10.1002/anie.201406492] [Citation(s) in RCA: 128] [Impact Index Per Article: 12.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2014] [Indexed: 11/07/2022]
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18
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Jia S, Xing D, Zhang D, Hu W. Catalytic Asymmetric Functionalization of Aromatic CH Bonds by Electrophilic Trapping of Metal-Carbene-Induced Zwitterionic Intermediates. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201406492] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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19
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Yanagisawa A, Sugita T, Yoshida K. Enantioselective Protonation of Alkenyl Trifluoroacetates Catalyzed by Chiral Tin Methoxide. Chemistry 2013; 19:16200-3. [DOI: 10.1002/chem.201302975] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2013] [Indexed: 11/08/2022]
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20
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Yamagami T, Hatsuda M, Utsugi M, Kobayashi R, Moritani Y. Highly Diastereoselective Esterification of Ketenes Generated In Situ from Acyl Chlorides with (R)-Pantolactone Derivatives. European J Org Chem 2013. [DOI: 10.1002/ejoc.201301383] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Fu N, Zhang L, Luo S, Cheng JP. Chiral primary-amine-catalyzed conjugate addition to α-substituted vinyl ketones/aldehydes: divergent stereocontrol modes on enamine protonation. Chemistry 2013; 19:15669-81. [PMID: 24114835 DOI: 10.1002/chem.201302056] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2013] [Revised: 07/23/2013] [Indexed: 11/10/2022]
Abstract
Enantioselective protonation with a catalytic enamine intermediate represents a challenging, yet fundamentally important process for the synthesis of α-chiral carbonyls. We describe herein chiral primary-amine-catalyzed conjugate additions of indoles to both α-substituted acroleins and vinyl ketones. These reactions feature enamine protonation as the stereogenic step. A simple primary-tertiary vicinal diamine 1 with trifluoromethanesulfonic acid (TfOH) was found to enable both of the reactions of acroleins and vinyl ketones with good activity and high enantioselectivity. Detailed mechanistic studies reveal that these reactions are rate-limiting in iminium formation and they all involve a uniform H2 O/acid-bridged proton transfer in the stereogenic steps but divergent stereocontrol modes for the protonation stereoselectivity. For the reactions of α-branched acroleins, facial selections on H2 O-bridged protonation determine the enantioselectivity, which is enhanced by an OH⋅⋅⋅π interaction with indole as uncovered by DFT calculations. On the other hand, the stereoselectivity of the reactions with vinyl ketones is controlled according to the Curtin-Hammett principle in the CC bond-formation step, which precedes a highly stereospecific enamine protonation.
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Affiliation(s)
- Niankai Fu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190 (P.R. China), Fax: (+86) 10-6255-4449
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Miquet S, Vanthuyne N, Brémond P, Audran G. Enantioselective Syntheses of the Proposed Structures of Kopeolin and Kopeolone. Chemistry 2013; 19:10632-42. [DOI: 10.1002/chem.201300711] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2013] [Indexed: 11/08/2022]
Affiliation(s)
- Stéphanie Miquet
- Aix-Marseille Université, CNRS, Institut de Chimie Radicalaire UMR 7273, 13397 Marseille Cedex 20, France
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Hintermann L, Ackerstaff J, Boeck F. Inner Workings of a Cinchona Alkaloid Catalyzed Oxa-Michael Cyclization: Evidence for a Concerted Hydrogen-Bond-Network Mechanism. Chemistry 2013; 19:2311-21. [DOI: 10.1002/chem.201203505] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2012] [Indexed: 11/09/2022]
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Tsui GC, Lautens M. Rhodium(I)-Catalyzed Domino Asymmetric Ring Opening/Enantioselective Isomerization of Oxabicyclic Alkenes with Water. Angew Chem Int Ed Engl 2012; 51:5400-4. [PMID: 22511539 DOI: 10.1002/anie.201200390] [Citation(s) in RCA: 62] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2012] [Revised: 03/06/2012] [Indexed: 11/10/2022]
Affiliation(s)
- Gavin C Tsui
- Davenport Laboratories, Department of Chemistry, University of Toronto, Toronto, ON, M5S 3H6 Canada
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25
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Tsui GC, Lautens M. Rhodium(I)-Catalyzed Domino Asymmetric Ring Opening/Enantioselective Isomerization of Oxabicyclic Alkenes with Water. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201200390] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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26
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Wang J, Chen J, Kee CW, Tan CH. Enantiodivergent and γ-Selective Asymmetric Allylic Amination. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107317] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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Wang J, Chen J, Kee CW, Tan CH. Enantiodivergent and γ-Selective Asymmetric Allylic Amination. Angew Chem Int Ed Engl 2012; 51:2382-6. [DOI: 10.1002/anie.201107317] [Citation(s) in RCA: 77] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2011] [Revised: 12/21/2011] [Indexed: 11/06/2022]
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28
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Capitta F, Frongia A, Piras PP, Pitzanti P, Secci F. Organocatalytic asymmetric tandem condensation–intramolecular rearrangement–protonation: an approach to optically active α-amino thioester derivatives. Org Biomol Chem 2012; 10:490-4. [DOI: 10.1039/c1ob06623d] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Fu N, Zhang L, Li J, Luo S, Cheng JP. Chiral primary amine catalyzed enantioselective protonation via an enamine intermediate. Angew Chem Int Ed Engl 2011; 50:11451-5. [PMID: 21987522 DOI: 10.1002/anie.201105477] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2011] [Revised: 08/22/2011] [Indexed: 11/09/2022]
Affiliation(s)
- Niankai Fu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, China
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Fu N, Zhang L, Li J, Luo S, Cheng JP. Chiral Primary Amine Catalyzed Enantioselective Protonation via an Enamine Intermediate. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201105477] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Hayashi M, Nakamura S. Catalytic Enantioselective Protonation of α-Oxygenated Ester Enolates Prepared through Phospha-Brook Rearrangement. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007568] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Hayashi M, Nakamura S. Catalytic enantioselective protonation of α-oxygenated ester enolates prepared through phospha-Brook rearrangement. Angew Chem Int Ed Engl 2011; 50:2249-52. [PMID: 21351329 DOI: 10.1002/anie.201007568] [Citation(s) in RCA: 104] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2010] [Indexed: 11/12/2022]
Affiliation(s)
- Masashi Hayashi
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
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33
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Capitta F, Frongia A, Piras PP, Pitzanti P, Secci F. Enantioselective Organocatalytic Rearrangement of α-Acyloxy- β-keto Sulfides to α-Acyloxy Thioesters. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000376] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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34
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Tian F, Yao D, Liu Y, Xie F, Zhang W. Iridium‐Catalyzed Highly Enantioselective Hydrogenation of Exocyclic α,β‐Unsaturated Carbonyl Compounds. Adv Synth Catal 2010. [DOI: 10.1002/adsc.201000185] [Citation(s) in RCA: 88] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Fengtao Tian
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China, Fax: (+86)‐21‐5474‐3265
| | - Dongmei Yao
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China, Fax: (+86)‐21‐5474‐3265
| | - Yuanyuan Liu
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China, Fax: (+86)‐21‐5474‐3265
| | - Fang Xie
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China, Fax: (+86)‐21‐5474‐3265
| | - Wanbin Zhang
- School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, 800 Dongchuan Road, Shanghai 200240, People's Republic of China, Fax: (+86)‐21‐5474‐3265
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35
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Fehr C, Buzas A, Knopff O, de Saint Laumer JY. (+)-(R,Z)-5-Muscenone and (−)-(R)-Muscone by Enantioselective Aldol Reaction and Grob Fragmentation. Chemistry 2010; 16:2487-95. [DOI: 10.1002/chem.200902774] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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36
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Lin S, Leow D, Huang KW, Tan CH. Enantioselective Protonation of Itaconimides with Thiols and the Rotational Kinetics of the Axially Chiral CN Bond. Chem Asian J 2009; 4:1741-4. [DOI: 10.1002/asia.200900331] [Citation(s) in RCA: 54] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Abstract
Chiral guanidine catalysts share common characteristics such as high pK(a) values and dual hydrogen-bonding modes of activation, and high catalytic activities and enantioselectivities can often be achieved. The utilization of guanidines as catalysts has been growing at a steady pace. In the past few years, it has attracted tremendous attention through several landmark achievements. This article highlights the development of chiral guanidine catalysis in asymmetric synthesis.
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Affiliation(s)
- Dasheng Leow
- Department of Chemistry, National University of Singapore, 3 Science Drive 3, 117543, Singapore
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38
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Rueping M, Ieawsuwan W. A Catalytic Asymmetric Electrocyclization-Protonation Reaction. Adv Synth Catal 2009. [DOI: 10.1002/adsc.200800623] [Citation(s) in RCA: 120] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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39
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Lu SM, Bolm C. Highly enantioselective synthesis of optically active ketones by iridium-catalyzed asymmetric hydrogenation. Angew Chem Int Ed Engl 2008; 47:8920-3. [PMID: 18855959 DOI: 10.1002/anie.200803709] [Citation(s) in RCA: 129] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Sheng-Mei Lu
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
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40
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Lu SM, Bolm C. Highly Enantioselective Synthesis of Optically Active Ketones by Iridium-Catalyzed Asymmetric Hydrogenation. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200803709] [Citation(s) in RCA: 58] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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41
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Leow D, Lin S, Chittimalla S, Fu X, Tan CH. Enantioselective Protonation Catalyzed by a Chiral Bicyclic Guanidine Derivative. Angew Chem Int Ed Engl 2008; 47:5641-5. [DOI: 10.1002/anie.200801378] [Citation(s) in RCA: 172] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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42
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Leow D, Lin S, Chittimalla S, Fu X, Tan CH. Enantioselective Protonation Catalyzed by a Chiral Bicyclic Guanidine Derivative. Angew Chem Int Ed Engl 2008. [DOI: 10.1002/ange.200801378] [Citation(s) in RCA: 75] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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43
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Fehr C, Randall H. Synthetic Applications of Enantioselective Protonation and Case Study for (S)‐α‐Damascone. Chem Biodivers 2008; 5:942-57. [DOI: 10.1002/cbdv.200890106] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Rueping M, Theissmann T, Raja S, Bats J. Asymmetric Counterion Pair Catalysis: An Enantioselective Brønsted Acid-Catalyzed Protonation. Adv Synth Catal 2008. [DOI: 10.1002/adsc.200800020] [Citation(s) in RCA: 174] [Impact Index Per Article: 10.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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45
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Kukula P, Matoušek V, Mallat T, Baiker A. Enantioselective Decarboxylation of β-Keto Esters with Pd/Amino Alcohol Systems: Successive Metal Catalysis and Organocatalysis. Chemistry 2008; 14:2699-708. [DOI: 10.1002/chem.200701652] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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46
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47
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Poisson T, Dalla V, Marsais F, Dupas G, Oudeyer S, Levacher V. Organocatalytic Enantioselective Protonation of Silyl Enolates Mediated by Cinchona Alkaloids and a Latent Source of HF. Angew Chem Int Ed Engl 2007. [DOI: 10.1002/ange.200701683] [Citation(s) in RCA: 24] [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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48
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Fehr C. Catalytic Enantioselective Tautomerization of Isolated Enols. Angew Chem Int Ed Engl 2007; 46:7119-21. [PMID: 17594700 DOI: 10.1002/anie.200701428] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Charles Fehr
- Firmenich SA, Corporate R&D Division, PO Box 239, 1211 Geneva 8, Switzerland.
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49
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Poisson T, Dalla V, Marsais F, Dupas G, Oudeyer S, Levacher V. Organocatalytic Enantioselective Protonation of Silyl Enolates Mediated by Cinchona Alkaloids and a Latent Source of HF. Angew Chem Int Ed Engl 2007; 46:7090-3. [PMID: 17691086 DOI: 10.1002/anie.200701683] [Citation(s) in RCA: 68] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Thomas Poisson
- Institut de Recherche en Chimie Organique Fine associé au CNRS (UMR-6014), INSA-Université de Rouen, Rue Tesnières, 76130 Mont-Saint-Aignan, France
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50
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Dai X, Nakai T, Romero JAC, Fu GC. Enantioselective synthesis of protected amines by the catalytic asymmetric addition of hydrazoic acid to ketenes. Angew Chem Int Ed Engl 2007; 46:4367-9. [PMID: 17471484 DOI: 10.1002/anie.200700697] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xing Dai
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA
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