101
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Fahrenwaldt T, Großeheilmann J, Erben F, Kragl U. Organic Solvent Nanofiltration as a Tool for Separation of Quinine-Based Organocatalysts. Org Process Res Dev 2013. [DOI: 10.1021/op400037h] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Thomas Fahrenwaldt
- Institute
of Chemistry, Technische Chemie, University of Rostock, Albert-Einstein-Str.
3a, 18059 Rostock, Germany
| | - Julia Großeheilmann
- Institute
of Chemistry, Technische Chemie, University of Rostock, Albert-Einstein-Str.
3a, 18059 Rostock, Germany
| | - Friedrich Erben
- Leibniz Institute for Catalysis (LIKAT Rostock), Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Udo Kragl
- Institute
of Chemistry, Technische Chemie, University of Rostock, Albert-Einstein-Str.
3a, 18059 Rostock, Germany
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102
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Stoltz B, Motherwell W. Tetrahedron reports on organic chemistry. Tetrahedron 2013. [DOI: 10.1016/s0040-4020(13)01252-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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103
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A family of novel bifunctional organocatalysts: Highly enantioselective alcoholysis of meso cyclic anhydrides and its application for synthesis of the key intermediate of P2X7 receptor antagonists. CHINESE CHEM LETT 2013. [DOI: 10.1016/j.cclet.2013.04.009] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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104
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Molleti N, Allu S, Ray SK, Singh VK. Bifunctional chiral urea catalyzed highly enantioselective Michael addition of cyclic 1,3-dicarbonyl compounds to 2-enoylpyridines. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.04.003] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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105
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Ramachary DB, Venkaiah C, Madhavachary R. Asymmetric Synthesis of Druglike Six-Membered Spirooxindoles through an Amino Enyne Catalysis. Org Lett 2013; 15:3042-5. [DOI: 10.1021/ol401227q] [Citation(s) in RCA: 79] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- D. B. Ramachary
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Central University (PO), Hyderabad 500 046, India
| | - Chintalapudi Venkaiah
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Central University (PO), Hyderabad 500 046, India
| | - R. Madhavachary
- Catalysis Laboratory, School of Chemistry, University of Hyderabad, Central University (PO), Hyderabad 500 046, India
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106
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Xue XS, Li X, Yu A, Yang C, Song C, Cheng JP. Mechanism and Selectivity of Bioinspired Cinchona Alkaloid Derivatives Catalyzed Asymmetric Olefin Isomerization: A Computational Study. J Am Chem Soc 2013; 135:7462-73. [DOI: 10.1021/ja309133z] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Xiao-Song Xue
- State
Key Laboratory of Elemento-Organic Chemistry, §Computational Center of Molecular
Science, and ‡Central Laboratory, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Xin Li
- State
Key Laboratory of Elemento-Organic Chemistry, §Computational Center of Molecular
Science, and ‡Central Laboratory, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Ao Yu
- State
Key Laboratory of Elemento-Organic Chemistry, §Computational Center of Molecular
Science, and ‡Central Laboratory, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Chen Yang
- State
Key Laboratory of Elemento-Organic Chemistry, §Computational Center of Molecular
Science, and ‡Central Laboratory, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Chan Song
- State
Key Laboratory of Elemento-Organic Chemistry, §Computational Center of Molecular
Science, and ‡Central Laboratory, College of Chemistry, Nankai University, Tianjin 300071, China
| | - Jin-Pei Cheng
- State
Key Laboratory of Elemento-Organic Chemistry, §Computational Center of Molecular
Science, and ‡Central Laboratory, College of Chemistry, Nankai University, Tianjin 300071, China
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107
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Das U, Chen YR, Tsai YL, Lin W. Organocatalytic Enantioselective Direct Vinylogous Michael Addition of γ-Substituted Butenolides to 3-Aroyl Acrylates and 1,2-Diaroylethylenes. Chemistry 2013; 19:7713-7. [DOI: 10.1002/chem.201301332] [Citation(s) in RCA: 58] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2013] [Indexed: 01/05/2023]
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108
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Iida H, Tang Z, Yashima E. Synthesis and bifunctional asymmetric organocatalysis of helical poly(phenylacetylene)s bearing cinchona alkaloid pendants via a sulfonamide linkage. ACTA ACUST UNITED AC 2013. [DOI: 10.1002/pola.26678] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Hiroki Iida
- Department of Molecular Design and Engineering; Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
| | - Zhenglin Tang
- Department of Molecular Design and Engineering; Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
| | - Eiji Yashima
- Department of Molecular Design and Engineering; Graduate School of Engineering; Nagoya University; Nagoya 464-8603 Japan
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109
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Kawai H, Yuan Z, Kitayama T, Tokunaga E, Shibata N. Efficient Access to Trifluoromethyl Diarylpyrrolines and their N-Oxides through Enantioselective Conjugate Addition of Nitromethane to β,β-Disubstituted Enones. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301123] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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110
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Kawai H, Yuan Z, Kitayama T, Tokunaga E, Shibata N. Efficient Access to Trifluoromethyl Diarylpyrrolines and their N-Oxides through Enantioselective Conjugate Addition of Nitromethane to β,β-Disubstituted Enones. Angew Chem Int Ed Engl 2013; 52:5575-9. [PMID: 23606581 DOI: 10.1002/anie.201301123] [Citation(s) in RCA: 86] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2013] [Revised: 04/10/2013] [Indexed: 11/11/2022]
Affiliation(s)
- Hiroyuki Kawai
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
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111
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Lifchits O, Mahlau M, Reisinger CM, Lee A, Farès C, Polyak I, Gopakumar G, Thiel W, List B. The Cinchona Primary Amine-Catalyzed Asymmetric Epoxidation and Hydroperoxidation of α,β-Unsaturated Carbonyl Compounds with Hydrogen Peroxide. J Am Chem Soc 2013; 135:6677-93. [DOI: 10.1021/ja402058v] [Citation(s) in RCA: 122] [Impact Index Per Article: 11.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Olga Lifchits
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1 D-45470, Mülheim an der Ruhr, Germany
| | - Manuel Mahlau
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1 D-45470, Mülheim an der Ruhr, Germany
| | - Corinna M. Reisinger
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1 D-45470, Mülheim an der Ruhr, Germany
| | - Anna Lee
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1 D-45470, Mülheim an der Ruhr, Germany
| | - Christophe Farès
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1 D-45470, Mülheim an der Ruhr, Germany
| | - Iakov Polyak
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1 D-45470, Mülheim an der Ruhr, Germany
| | | | - Walter Thiel
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1 D-45470, Mülheim an der Ruhr, Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1 D-45470, Mülheim an der Ruhr, Germany
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112
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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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113
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Quintavalla A, Lombardo M, Sanap SP, Trombini C. A New Henry/Michael/Retro-Henry/Henry Domino Sequence Promoted by Bifunctional Organocatalysts. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201201135] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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114
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Ji CB, Cao ZY, Wang X, Wu DY, Zhou J. A Catalyst-Free, One-Pot Three-Component Aminomethylation of α-Substituted Nitroacetates: Theoretical and Experimental Studies into the Rate-Accelerating Effects of the Solvent Methanol. Chem Asian J 2013; 8:877-82. [DOI: 10.1002/asia.201300053] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2013] [Indexed: 11/09/2022]
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115
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Huang Y, Yang L, Shao P, Zhao Y. Practical, highly stereoselective allyl- and crotylsilylation of aldehydes catalyzed by readily available Cinchona alkaloid amide. Chem Sci 2013. [DOI: 10.1039/c3sc50973g] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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116
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Zhou F, Zeng XP, Wang C, Zhao XL, Zhou J. Organocatalytic asymmetric synthesis of 3,3-disubstituted oxindoles featuring two heteroatoms at the C3 position. Chem Commun (Camb) 2013; 49:2022-4. [DOI: 10.1039/c3cc38819k] [Citation(s) in RCA: 73] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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117
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Liu YL, Zhou J. Organocatalytic asymmetric cyanation of isatin derived N-Boc ketoimines. Chem Commun (Camb) 2013; 49:4421-3. [DOI: 10.1039/c2cc36665g] [Citation(s) in RCA: 137] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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118
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Yashima E, Iida H, Okamoto Y. Enantiomeric Differentiation by Synthetic Helical Polymers. Top Curr Chem (Cham) 2013; 340:41-72. [DOI: 10.1007/128_2013_439] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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119
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Jin CY, Wang Y, Liu YZ, Shen C, Xu PF. Organocatalytic Asymmetric Michael Addition of Oxindoles to Nitroolefins for the Synthesis of 2,2-Disubstituted Oxindoles Bearing Adjacent Quaternary and Tertiary Stereocenters. J Org Chem 2012; 77:11307-12. [DOI: 10.1021/jo301886j] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Cheng-Yong Jin
- State Key Laboratory of Applied Organic Chemistry and
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yao Wang
- State Key Laboratory of Applied Organic Chemistry and
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yao-Zong Liu
- State Key Laboratory of Applied Organic Chemistry and
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Chao Shen
- State Key Laboratory of Applied Organic Chemistry and
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State Key Laboratory of Applied Organic Chemistry and
College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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120
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Zhu C, Yang L, Nie J, Zheng Y, Ma J. Organocatalytic Asymmetric Branching Sequence of MBH Carbonates: Access to Chiral Benzofuran-2(3H)-one Derivatives with Three Stereocenters. CHINESE J CHEM 2012. [DOI: 10.1002/cjoc.201200809] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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121
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Polyoxometalate Supported Cinchona-Derived Chiral Amine for Asymmetric Organocatalysed Aldol Reaction. J Inorg Organomet Polym Mater 2012. [DOI: 10.1007/s10904-012-9794-5] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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122
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Promotion of Henry reactions using Cu(OTf)2 and a sterically hindered Schiff base: access to enantioenriched β-hydroxynitroalkanes. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.08.029] [Citation(s) in RCA: 45] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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123
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Carboxymethylcellulose Supported Cinchonine as a Recyclable Catalyst for Asymmetric Michael Reaction. Catal Letters 2012. [DOI: 10.1007/s10562-012-0915-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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124
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Enhanced efficiency of recyclable C3-symmetric cinchonine-squaramides in the asymmetric Friedel–Crafts reaction of indoles with alkyl trifluoropyruvate. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.08.015] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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125
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Chen ZM, Yang BM, Chen ZH, Zhang QW, Wang M, Tu YQ. Organocatalytic Asymmetric Fluorination/Semipinacol Rearrangement: An Efficient Approach to Chiral β-Fluoroketones. Chemistry 2012; 18:12950-4. [DOI: 10.1002/chem.201202444] [Citation(s) in RCA: 58] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/09/2012] [Indexed: 11/09/2022]
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126
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Molleti N, Rana NK, Singh VK. Highly Enantioselective Conjugate Addition of Malononitrile to 2-Enoylpyridines with Bifunctional Organocatalyst. Org Lett 2012; 14:4322-5. [DOI: 10.1021/ol3015607] [Citation(s) in RCA: 51] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Nagaraju Molleti
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, India 460 023, and Department of Chemistry, Indian Institute of Technology Kanpur, India 208 016
| | - Nirmal K. Rana
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, India 460 023, and Department of Chemistry, Indian Institute of Technology Kanpur, India 208 016
| | - Vinod K. Singh
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal, ITI (Gas Rahat) Building, Govindpura, India 460 023, and Department of Chemistry, Indian Institute of Technology Kanpur, India 208 016
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127
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Hisaki I, Hiraishi E, Sasaki T, Orita H, Tsuzuki S, Tohnai N, Miyata M. Crystal Structure of Quinine: The Effects of Vinyl and Methoxy Groups on Molecular Assemblies of Cinchona Alkaloids Cannot Be Ignored. Chem Asian J 2012; 7:2607-14. [DOI: 10.1002/asia.201200566] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2012] [Indexed: 11/09/2022]
Affiliation(s)
- Ichiro Hisaki
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
| | - Eri Hiraishi
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
| | - Toshiyuki Sasaki
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
| | - Hideo Orita
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305‐8568 (Japan). Fax: (+81) 29‐851‐5426
| | - Seiji Tsuzuki
- National Institute of Advanced Industrial Science and Technology (AIST), Tsukuba, Ibaraki 305‐8568 (Japan). Fax: (+81) 29‐851‐5426
| | - Norimitsu Tohnai
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
| | - Mikiji Miyata
- Department of Material and Life Science, Graduate School of Engineering, Osaka University, 2‐1 Yamadaoka, Suita, Osaka 565‐0871 (Japan), Fax: (+81) 6‐6879‐7406
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128
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Chauhan P, Chimni SS. Grinding-Assisted Asymmetric Organocatalysis: A Solvent-free Approach to the Formation of Vicinal Quaternary and Tertiary Stereocenters. ASIAN J ORG CHEM 2012. [DOI: 10.1002/ajoc.201200048] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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129
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Li X, Liu C, Xue XS, Cheng JP. Enantioselective Organocatalyzed Sulfenylation of 3-Substituted Oxindoles. Org Lett 2012; 14:4374-7. [DOI: 10.1021/ol301833f] [Citation(s) in RCA: 70] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Xin Li
- State-key Laboratory of Elementoorganic Chemistry and Department of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Cong Liu
- State-key Laboratory of Elementoorganic Chemistry and Department of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Xiao-Song Xue
- State-key Laboratory of Elementoorganic Chemistry and Department of Chemistry, Nankai University, Tianjin, 300071, P.R. China
| | - Jin-Pei Cheng
- State-key Laboratory of Elementoorganic Chemistry and Department of Chemistry, Nankai University, Tianjin, 300071, P.R. China
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130
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Naito Y, Tang Z, Iida H, Miyabe T, Yashima E. Enantioseparation on Helical Poly(phenylacetylene)s Bearing Cinchona Alkaloid Pendants as Chiral Stationary Phases for HPLC. CHEM LETT 2012. [DOI: 10.1246/cl.2012.809] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yuki Naito
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
| | - Zhenglin Tang
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
| | - Hiroki Iida
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
| | - Toshitaka Miyabe
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
| | - Eiji Yashima
- Department of Molecular Design and Engineering, Graduate School of Engineering, Nagoya University
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131
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Li H, Zhang X, Shi X, Ji N, He W, Zhang S, Zhang B. Modular Bifunctional Chiral Thioureas as Versatile Organocatalysts for Highly Enantioselective Aza-Henry Reaction and Michael Addition. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200144] [Citation(s) in RCA: 34] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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132
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Haraguchi N, Ahamed P, Parvez MM, Itsuno S. Synthesis of main-chain chiral quaternary ammonium polymers for asymmetric catalysis using quaternization polymerization. Molecules 2012; 17:7569-83. [PMID: 22713348 PMCID: PMC6269034 DOI: 10.3390/molecules17067569] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/27/2012] [Revised: 06/04/2012] [Accepted: 06/13/2012] [Indexed: 11/17/2022] Open
Abstract
Main-chain chiral quaternary ammonium polymers were successfully synthesized by the quaternization polymerization of cinchonidine dimer with dihalides. The polymerization occurred smoothly under optimized conditions to give novel type of main-chain chiral quaternary ammonium polymers. The catalytic activity of the polymeric chiral organocatalysts was investigated on the asymmetric benzylation of N-(diphenylmethylidene)glycine tert-butyl ester.
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Affiliation(s)
- Naoki Haraguchi
- Department of Environmental and Life Sciences, Graduate School of Engineering, Toyohashi University of Technology, 1-1 Hibarigaoka, Toyohashi, Aichi 441-8580, Japan.
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133
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Bisai V, Bisai A, Singh VK. Enantioselective organocatalytic aldol reaction using small organic molecules. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.099] [Citation(s) in RCA: 119] [Impact Index Per Article: 9.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
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134
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Boratyński PJ, Turowska-Tyrk I, Skarżewski J. Synthetic approaches to 9-arylated Cinchona alkaloids: stereoselective addition of Grignard reagents to cinchonanones and hydroxylation of 9-phenylcinchonanes. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.05.024] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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135
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Curti C, Rassu G, Zambrano V, Pinna L, Pelosi G, Sartori A, Battistini L, Zanardi F, Casiraghi G. Bifunctional Cinchona Alkaloid/Thiourea Catalyzes Direct and Enantioselective Vinylogous Michael Addition of 3-Alkylidene Oxindoles to Nitroolefins. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201202027] [Citation(s) in RCA: 40] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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136
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Curti C, Rassu G, Zambrano V, Pinna L, Pelosi G, Sartori A, Battistini L, Zanardi F, Casiraghi G. Bifunctional Cinchona Alkaloid/Thiourea Catalyzes Direct and Enantioselective Vinylogous Michael Addition of 3-Alkylidene Oxindoles to Nitroolefins. Angew Chem Int Ed Engl 2012; 51:6200-4. [DOI: 10.1002/anie.201202027] [Citation(s) in RCA: 107] [Impact Index Per Article: 8.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2012] [Indexed: 01/30/2023]
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137
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Yan W, Wang D, Feng J, Li P, Zhao D, Wang R. Synthesis of N-Alkoxycarbonyl Ketimines Derived from Isatins and Their Application in Enantioselective Synthesis of 3-Aminooxindoles. Org Lett 2012; 14:2512-5. [DOI: 10.1021/ol3007953] [Citation(s) in RCA: 158] [Impact Index Per Article: 13.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wenjin Yan
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, State Key Laboratory of Applied Organic Chemistry and Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, 730000, China
| | - Dong Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, State Key Laboratory of Applied Organic Chemistry and Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, 730000, China
| | - Jingchao Feng
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, State Key Laboratory of Applied Organic Chemistry and Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, 730000, China
| | - Peng Li
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, State Key Laboratory of Applied Organic Chemistry and Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, 730000, China
| | - Depeng Zhao
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, State Key Laboratory of Applied Organic Chemistry and Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, 730000, China
| | - Rui Wang
- Key Laboratory of Preclinical Study for New Drugs of Gansu Province, School of Basic Medical Sciences, State Key Laboratory of Applied Organic Chemistry and Institute of Biochemistry and Molecular Biology, Lanzhou University, Lanzhou, 730000, China
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138
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Kawai H, Okusu S, Tokunaga E, Sato H, Shiro M, Shibata N. Organocatalytic Asymmetric Synthesis of Trifluoromethyl-substituted Diarylpyrrolines: Enantioselective Conjugate Cyanation of β-Aryl-β-trifluoromethyl-disubstituted Enones. Angew Chem Int Ed Engl 2012; 51:4959-62. [DOI: 10.1002/anie.201201278] [Citation(s) in RCA: 110] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2012] [Indexed: 11/09/2022]
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139
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Kawai H, Okusu S, Tokunaga E, Sato H, Shiro M, Shibata N. Organocatalytic Asymmetric Synthesis of Trifluoromethyl-substituted Diarylpyrrolines: Enantioselective Conjugate Cyanation of β-Aryl-β-trifluoromethyl-disubstituted Enones. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201201278] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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140
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Diastereo- and enantioselective synthesis of densely functionalized cyclohexanones via double Michael addition of curcumins with nitroalkenes. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.04.011] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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141
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Albertshofer K, Tan B, Barbas CF. Assembly of Spirooxindole Derivatives Containing Four Consecutive Stereocenters via Organocatalytic Michael–Henry Cascade Reactions. Org Lett 2012; 14:1834-7. [DOI: 10.1021/ol300441z] [Citation(s) in RCA: 129] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Klaus Albertshofer
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Bin Tan
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Carlos F. Barbas
- The Skaggs Institute for Chemical Biology and the Departments of Chemistry and Molecular Biology, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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142
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Wang C, Yang X, Enders D. Asymmetric Michael Addition of
N
‐Boc‐Protected Oxindoles to Nitroalkenes Catalyzed by a Chiral Secondary Amine. Chemistry 2012; 18:4832-5. [DOI: 10.1002/chem.201200079] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2012] [Indexed: 11/07/2022]
Affiliation(s)
- Chuan Wang
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany), Fax: (+49) 241‐809‐2127
| | - Xuena Yang
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany), Fax: (+49) 241‐809‐2127
| | - Dieter Enders
- Institute of Organic Chemistry, RWTH Aachen University, Landoltweg 1, 52074 Aachen (Germany), Fax: (+49) 241‐809‐2127
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143
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Tang Z, Iida H, Hu HY, Yashima E. Remarkable Enhancement of the Enantioselectivity of an Organocatalyzed Asymmetric Henry Reaction Assisted by Helical Poly(phenylacetylene)s Bearing Cinchona Alkaloid Pendants via an Amide Linkage. ACS Macro Lett 2012; 1:261-265. [PMID: 35578519 DOI: 10.1021/mz200161s] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
A series of novel helical poly(phenylacetylene)s bearing amino-functionalized cinchona alkaloid pendant groups connecting to the phenyl rings through an amide linkage were prepared by the polymerization of the corresponding phenylacetylenes using a rhodium catalyst. All of the polymers formed a preferred-handed helical conformation biased by the optically active pendants, resulting in the induced circular dichroism in their π-conjugated polymer backbone regions. The optically active helical polymers efficiently catalyzed the asymmetric Henry reaction of benzaldehydes with nitromethane, giving optically active products up to 94% enantiomeric excess (ee) when the poly(phenylacetylene) bearing an amino-functionalized quinine pendant group was used as the polymeric organocatalyst; the enantioselectivity was remarkably higher than those catalyzed by the corresponding nonhelical poly(phenylacetylene) (18% ee) and the monomer (28% ee).
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Affiliation(s)
- Zhenglin Tang
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Hiroki Iida
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
| | - Hai-Yu Hu
- Venture Business Laboratory, Nagoya University, Nagoya 464-8603, Japan
| | - Eiji Yashima
- Department of Molecular
Design and Engineering, Graduate School of Engineering, Nagoya University, Nagoya 464-8603, Japan
- Venture Business Laboratory, Nagoya University, Nagoya 464-8603, Japan
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144
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Chiarucci M, Lombardo M, Trombini C, Quintavalla A. Enantioselective Conjugate Addition of Nitroalkanes to Alkylidenemalonates Promoted by Thiourea-Based Bifunctional Organocatalysts. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201100732] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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145
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Ji CB, Liu YL, Zhao XL, Guo YL, Wang HY, Zhou J. Direct amination of α-substituted nitroacetates using di-tert-butyl azodicarboxylate catalyzed by Hatakeyama's catalyst β-ICD. Org Biomol Chem 2012; 10:1158-61. [PMID: 22231285 DOI: 10.1039/c2ob06746c] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first example of catalytic asymmetric direct amination of α-monosubstituted nitroacetates using di-tert-butyl azodicarboxylate. The simple and easily available Hatakeyama's catalyst β-ICD 11 was found to be a highly enantioselective catalyst for this reaction.
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Affiliation(s)
- Cong-Bin Ji
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 N. Zhongshan Road, Shanghai 200062, PR China
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146
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Liu YL, Zhou J. Organocatalytic asymmetric synthesis of 3-difluoroalkyl 3-hydroxyoxindoles. Chem Commun (Camb) 2012; 48:1919-21. [PMID: 22228324 DOI: 10.1039/c2cc17140f] [Citation(s) in RCA: 118] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first example of highly enantioselective organocatalytic synthesis of 3-difluoroalkyl substituted 3-hydroxyoxindoles. The total synthesis of the difluoro analogue of convolutamydine E was achieved by this method.
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Affiliation(s)
- Yun-Lin Liu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663N, Zhongshan Road, Shanghai 200062, PR China
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147
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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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148
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Chauhan P, Chimni SS. Aromatic hydroxyl group—a hydrogen bonding activator in bifunctional asymmetric organocatalysis. RSC Adv 2012. [DOI: 10.1039/c1ra00872b] [Citation(s) in RCA: 68] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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149
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Chauhan P, Chimni SS. Facile Construction of Vicinal Quaternary and Tertiary Stereocenters via Regio- and Stereoselective Organocatalytic Michael Addition to Nitrodienes. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100618] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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150
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Zhou F, Ding M, Liu YL, Wang CH, Ji CB, Zhang YY, Zhou J. Organocatalytic Asymmetric α-Amination of Unprotected 3-Aryl and 3-Aliphatic Substituted Oxindoles using Di-tert-butyl Azodicarboxylate. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100379] [Citation(s) in RCA: 67] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
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