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1
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Cao J, Zhu SF. Catalytic Enantioselective Proton Transfer Reactions. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200350] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Jin Cao
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Shou-Fei Zhu
- State Key Laboratory and Institute of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin 300071, P. R. China
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2
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Asymmetric Intramolecular Hydroalkoxylation of Unactivated Alkenes Catalyzed by Chiral
N‐
Triflyl
Phosphoramide and
TiCl
4
†. CHINESE J CHEM 2020. [DOI: 10.1002/cjoc.201900544] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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3
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4
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Paladhi S, Liu Y, Kumar BS, Jung MJ, Park SY, Yan H, Song CE. Fluoride Anions in Self-Assembled Chiral Cage for the Enantioselective Protonation of Silyl Enol Ethers. Org Lett 2017; 19:3279-3282. [DOI: 10.1021/acs.orglett.7b01429] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Sushovan Paladhi
- Department
of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
| | - Yidong Liu
- Innovative
Drug Research Centre, Chongqing University, Chongqing 401331, China
| | - B. Senthil Kumar
- Department
of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
| | - Min-Jung Jung
- Department
of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
| | - Sang Yeon Park
- Department
of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
| | - Hailong Yan
- Innovative
Drug Research Centre, Chongqing University, Chongqing 401331, China
| | - Choong Eui Song
- Department
of Chemistry, Sungkyunkwan University, Suwon, 440-746, Korea
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5
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Díaz-Álvarez AE, Vidal C, Suárez FJ, Díez J, Cadierno V, Crochet P. C–H versus O–H Bond Activation in Phosphino-alcohol Ligands: Synthesis of the α-Hydroxy-alkyl Ruthenium(II) Derivatives [RuCl{κ2(P,C)-Ph2PC6H4C(R)OH}(η6-arene)]. Organometallics 2015. [DOI: 10.1021/acs.organomet.5b00074] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Alba E. Díaz-Álvarez
- Laboratorio
de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, C/Julián Clavería 8, E-33006 Oviedo, Spain
| | - Cristian Vidal
- Laboratorio
de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, C/Julián Clavería 8, E-33006 Oviedo, Spain
| | - Francisco J. Suárez
- Laboratorio
de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, C/Julián Clavería 8, E-33006 Oviedo, Spain
| | - Josefina Díez
- Laboratorio
de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, C/Julián Clavería 8, E-33006 Oviedo, Spain
| | - Victorio Cadierno
- Laboratorio
de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, C/Julián Clavería 8, E-33006 Oviedo, Spain
| | - Pascale Crochet
- Laboratorio
de Compuestos
Organometálicos y Catálisis (Unidad Asociada al CSIC),
Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica, Universidad de Oviedo, C/Julián Clavería 8, E-33006 Oviedo, Spain
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6
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Pardo P, Carmona D, Lamata P, Rodrı́guez R, Lahoz FJ, Garcı́a-Orduña P, Oro LA. Reactivity of the Chiral Metallic Brønsted Acid [(η6-p-MeC6H4iPr)Ru(κ3P,O,O′-POH)][SbF6]2 (POH = (SC1,RC2)-Ph2PC(Ph)HC(OH)HCH2OMe) toward Aldimines. Organometallics 2014. [DOI: 10.1021/om501018r] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Pilar Pardo
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Daniel Carmona
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Pilar Lamata
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Ricardo Rodrı́guez
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Fernando J. Lahoz
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Pilar Garcı́a-Orduña
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
| | - Luis A. Oro
- Departamento de Quı́mica
Inorgánica, Instituto de Sı́ntesis Quı́mica y Catálisis Homogénea (ISQCH), CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, 50009 Zaragoza, Spain
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7
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Alkorta I, Cancedda C, Cocinero EJ, Dávalos JZ, Ecija P, Elguero J, González J, Lesarri A, Ramos R, Reviriego F, Roussel C, Uriarte I, Vanthuyne N. Static and dynamic properties of 1,1'-bi-2-naphthol and its conjugated acids and bases. Chemistry 2014; 20:14816-25. [PMID: 25234135 DOI: 10.1002/chem.201402686] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2014] [Revised: 07/10/2014] [Indexed: 11/10/2022]
Abstract
Several convergent techniques were used to characterize 1,1'-bi-2-naphthol (BINOL) and some of its properties. Its acidity in the gas-phase, from neutral species to monoanion, was measured by mass spectrometry. The conformation and structure of BINOL in the gas phase was determined by microwave rotational spectroscopy. NMR experiments in fluorosulfonic acid established that BINOL was monoprotonated on one of the hydroxyl oxygen atoms. The enantiomerization barriers reported in the literature for BINOL under neutral, basic, and acid conditions were analyzed with regard to the species involved. Finally, DFT calculations allowed all of these results to be gathered in a coherent picture of the BINOL structure.
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Affiliation(s)
- Ibon Alkorta
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, 28006 Madrid (Spain), Fax: (+34) 91-5644853.
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8
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Doran R, Guiry PJ. Catalytic Asymmetric Synthesis of Sterically Hindered Tertiary α-Aryl Ketones. J Org Chem 2014; 79:9112-24. [DOI: 10.1021/jo5014806] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Robert Doran
- 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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9
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10
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Carmona D, Lamata MP, Pardo P, Rodrı́guez R, Lahoz FJ, Garcı́a-Orduña P, Alkorta I, Elguero J, Oro LA. Arene–Ruthenium Chemistry and Brønsted Acid Catalysis of a Chiral Phosphane-Hydroxyl Ligand. Organometallics 2014. [DOI: 10.1021/om401215m] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Daniel Carmona
- Instituto de Sı́ntesis
Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Inorgánica, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - M. Pilar Lamata
- Instituto de Sı́ntesis
Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Inorgánica, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Pilar Pardo
- Instituto de Sı́ntesis
Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Inorgánica, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Ricardo Rodrı́guez
- Instituto de Sı́ntesis
Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Inorgánica, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Fernando J. Lahoz
- Instituto de Sı́ntesis
Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Inorgánica, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Pilar Garcı́a-Orduña
- Instituto de Sı́ntesis
Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Inorgánica, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
| | - Ibon Alkorta
- Instituto de Quı́mica
Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - José Elguero
- Instituto de Quı́mica
Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - Luis A. Oro
- Instituto de Sı́ntesis
Quı́mica
y Catálisis Homogénea (ISQCH), Departamento de Quı́mica
Inorgánica, CSIC-Universidad de Zaragoza, Pedro Cerbuna 12, E-50009 Zaragoza, Spain
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11
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Carmona D, Lamata MP, Sánchez A, Viguri F, Rodríguez R, Oro LA, Liu C, Díez-González S, Maseras F. Chiral transition-metal complexes as Brønsted-acid catalysts for the asymmetric Friedel–Crafts hydroxyalkylation of indoles. Dalton Trans 2014; 43:11260-8. [DOI: 10.1039/c4dt00556b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Water is the catalyst! The transition metal complex “only” modulates its acidity and provides a chiral environment.
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Affiliation(s)
- Daniel Carmona
- Instituto de Síntesis Química y Catálisis Homogénea
- Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas
- 50009 Zaragoza, Spain
| | - M. Pilar Lamata
- Instituto de Síntesis Química y Catálisis Homogénea
- Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas
- 50009 Zaragoza, Spain
| | - Antonio Sánchez
- Instituto de Síntesis Química y Catálisis Homogénea
- Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas
- 50009 Zaragoza, Spain
| | - Fernando Viguri
- Instituto de Síntesis Química y Catálisis Homogénea
- Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas
- 50009 Zaragoza, Spain
| | - Ricardo Rodríguez
- Instituto de Síntesis Química y Catálisis Homogénea
- Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas
- 50009 Zaragoza, Spain
| | - Luis A. Oro
- Instituto de Síntesis Química y Catálisis Homogénea
- Universidad de Zaragoza-Consejo Superior de Investigaciones Científicas
- 50009 Zaragoza, Spain
| | - Chunhui Liu
- Institute of Chemical Research of Catalonia (ICIQ)
- 43007 Tarragona, Spain
| | - Silvia Díez-González
- Institute of Chemical Research of Catalonia (ICIQ)
- 43007 Tarragona, Spain
- Department of Chemistry
- Imperial College London
- London SW7 2Az, UK
| | - Feliu Maseras
- Institute of Chemical Research of Catalonia (ICIQ)
- 43007 Tarragona, Spain
- Departament de Química
- Universitat Autònoma de Barcelona
- 08193 Bellaterra, Spain
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12
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Organocatalytic enantioselective transient enolate protonation in conjugate addition of thioacetic acid to α-substituted N-acryloyloxazolidinones. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.01.004] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Guin J, Varseev G, List B. Catalytic Asymmetric Protonation of Silyl Ketene Imines. J Am Chem Soc 2013; 135:2100-3. [DOI: 10.1021/ja312141b] [Citation(s) in RCA: 74] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Joyram Guin
- Max-Planck-Institut für Kohlenforschung, Kaiser
Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
| | - Georgy Varseev
- 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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14
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Yamamoto E, Gokuden D, Nagai A, Kamachi T, Yoshizawa K, Hamasaki A, Ishida T, Tokunaga M. Hydrolytic Enantioselective Protonation of Cyclic Dienyl Esters and a β-Diketone with Chiral Phase-Transfer Catalysts. Org Lett 2012. [DOI: 10.1021/ol3027363] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Eiji Yamamoto
- Department of Chemistry, Graduate School of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems (IRCMS), Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Daichi Gokuden
- Department of Chemistry, Graduate School of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems (IRCMS), Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Ayano Nagai
- Department of Chemistry, Graduate School of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems (IRCMS), Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Takashi Kamachi
- Department of Chemistry, Graduate School of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems (IRCMS), Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Kazunari Yoshizawa
- Department of Chemistry, Graduate School of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems (IRCMS), Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Akiyuki Hamasaki
- Department of Chemistry, Graduate School of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems (IRCMS), Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Tamao Ishida
- Department of Chemistry, Graduate School of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems (IRCMS), Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395, Japan
| | - Makoto Tokunaga
- Department of Chemistry, Graduate School of Sciences, Kyushu University, 6-10-1 Hakozaki, Higashi-ku, Fukuoka 812-8581, Japan, and Institute for Materials Chemistry and Engineering and International Research Center for Molecular Systems (IRCMS), Kyushu University, Moto-oka 744, Nishi-ku, Fukuoka 819-0395, Japan
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15
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Imahori T, Yamaguchi R, Kurihara S. Azobenzene-Tethered Bis(Trityl Alcohol) as a Photoswitchable Cooperative Acid Catalyst for Morita-Baylis-Hillman Reactions. Chemistry 2012; 18:10802-7. [DOI: 10.1002/chem.201201383] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2012] [Indexed: 01/02/2023]
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16
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Rana NK, Singh VK. Enantioselective Enolate Protonation in Sulfa–Michael Addition to α-Substituted N-Acryloyloxazolidin-2-ones with Bifunctional Organocatalyst. Org Lett 2011; 13:6520-3. [DOI: 10.1021/ol202808n] [Citation(s) in RCA: 83] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Nirmal K. Rana
- Department of Chemistry, Indian Institute of Technology Kanpur, India, 208 016, and Department of Chemical Sciences, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, India 460 023
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, India, 208 016, and Department of Chemical Sciences, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, India 460 023
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17
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Yang HM, Li L, Li F, Jiang KZ, Shang JY, Lai GQ, Xu LW. Silicon-Based Lewis Acid Assisted Cinchona Alkaloid Catalysis: Highly Enantioselective Aza-Michael Reaction under Solvent-Free Conditions. Org Lett 2011; 13:6508-11. [DOI: 10.1021/ol202803b] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Hua-Meng Yang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 310012, P. R. China
| | - Li Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 310012, P. R. China
| | - Fei Li
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 310012, P. R. China
| | - Ke-Zhi Jiang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 310012, P. R. China
| | - Jun-Yan Shang
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 310012, P. R. China
| | - Guo-Qiao Lai
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 310012, P. R. China
| | - Li-Wen Xu
- Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou 310012, P. R. China
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18
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Cheon CH, Kanno O, Toste FD. Chiral Brønsted acid from a cationic gold(I) complex: catalytic enantioselective protonation of silyl enol ethers of ketones. J Am Chem Soc 2011; 133:13248-51. [PMID: 21815666 PMCID: PMC3161142 DOI: 10.1021/ja204331w] [Citation(s) in RCA: 97] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
A chiral Brønsted acid has been developed from a cationic gold(I) disphosphine complex in the presence of alcoholic solvent and applied to the enantioselective protonation reaction of silyl enol ethers of ketones. Various optically active cyclic ketones were obtained in excellent yields and high enantioselectivities, including cyclic ketones bearing aliphatic substrates at the α-position. Furthermore, the application of this Brønsted acid was extended to the first Brønsted acid-catalyzed enantioselective protonation reaction of silyl enol ethers of acyclic substrates, regardless of their E/Z ratio.
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Affiliation(s)
- Cheol Hong Cheon
- Department of Chemistry, University of California, Berkeley, California 94720
| | - Osamu Kanno
- Department of Chemistry, University of California, Berkeley, California 94720
| | - F. Dean Toste
- Department of Chemistry, University of California, Berkeley, California 94720
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19
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Rueping M, Nachtsheim BJ, Ieawsuwan W, Atodiresei I. Modulation der Acidität - hoch acide Brønsted-Säuren in der asymmetrischen Katalyse. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201100169] [Citation(s) in RCA: 106] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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20
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Rueping M, Nachtsheim BJ, Ieawsuwan W, Atodiresei I. Modulating the Acidity: Highly Acidic Brønsted Acids in Asymmetric Catalysis. Angew Chem Int Ed Engl 2011; 50:6706-20. [DOI: 10.1002/anie.201100169] [Citation(s) in RCA: 226] [Impact Index Per Article: 17.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2011] [Indexed: 11/09/2022]
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21
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Sakakura A, Sakuma M, Ishihara K. Chiral Lewis Base-Assisted Brønsted Acid (LBBA)-Catalyzed Enantioselective Cyclization of 2-Geranylphenols. Org Lett 2011; 13:3130-3. [DOI: 10.1021/ol201032t] [Citation(s) in RCA: 54] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Akira Sakakura
- EcoTopia Science Institute, ‡Graduate School of Engineering, and §JST, CREST, Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, Japan
| | - Masayuki Sakuma
- EcoTopia Science Institute, ‡Graduate School of Engineering, and §JST, CREST, Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, Japan
| | - Kazuaki Ishihara
- EcoTopia Science Institute, ‡Graduate School of Engineering, and §JST, CREST, Nagoya University, Furo-cho, Chikusa, Nagoya, 464-8603, Japan
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Yamamoto E, Nagai A, Hamasaki A, Tokunaga M. Catalytic Asymmetric Hydrolysis: Asymmetric Hydrolytic Protonation of Enol Esters Catalyzed by Phase‐Transfer Catalysts. Chemistry 2011; 17:7178-82. [DOI: 10.1002/chem.201100833] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2011] [Indexed: 11/07/2022]
Affiliation(s)
- Eiji Yamamoto
- Department of Chemistry, Kyushu University, Fukuoka 812‐8581 (Japan), Fax: (+81) 92‐642‐7528
| | - Ayano Nagai
- Department of Chemistry, Kyushu University, Fukuoka 812‐8581 (Japan), Fax: (+81) 92‐642‐7528
| | - Akiyuki Hamasaki
- Department of Chemistry, Kyushu University, Fukuoka 812‐8581 (Japan), Fax: (+81) 92‐642‐7528
| | - Makoto Tokunaga
- Department of Chemistry, Kyushu University, Fukuoka 812‐8581 (Japan), Fax: (+81) 92‐642‐7528
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