1
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Imamoto T. P-Stereogenic Phosphorus Ligands in Asymmetric Catalysis. Chem Rev 2024; 124:8657-8739. [PMID: 38954764 DOI: 10.1021/acs.chemrev.3c00875] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/04/2024]
Abstract
Chiral phosphorus ligands play a crucial role in asymmetric catalysis for the efficient synthesis of useful optically active compounds. They are largely categorized into two classes: backbone chirality ligands and P-stereogenic phosphorus ligands. Most of the reported ligands belong to the former class. Privileged ones such as BINAP and DuPhos are frequently employed in a wide range of catalytic asymmetric transformations. In contrast, the latter class of P-stereogenic phosphorus ligands has remained a small family for many years mainly because of their synthetic difficulty. The late 1990s saw the emergence of novel P-stereogenic phosphorus ligands with their superior enantioinduction ability in Rh-catalyzed asymmetric hydrogenation reactions. Since then, numerous P-stereogenic phosphorus ligands have been synthesized and used in catalytic asymmetric reactions. This Review summarizes P-stereogenic phosphorus ligands reported thus far, including their stereochemical and electronic properties that afford high to excellent enantioselectivities. Examples of reactions that use this class of ligands are described together with their applications in the construction of key intermediates for the synthesis of optically active natural products and therapeutic agents. The literature covered dates back to 1968 up until December 2023, centering on studies published in the late 1990s and later years.
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Affiliation(s)
- Tsuneo Imamoto
- Department of Chemistry, Graduate School of Science, Chiba University, Chiba 263-8522, Japan
- Division of Applied Chemistry, Graduate School of Engineering, Hokkaido University, Sapporo, Hokkaido 060-8628, Japan
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2
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Cabré A, Verdaguer X, Riera A. Recent Advances in the Enantioselective Synthesis of Chiral Amines via Transition Metal-Catalyzed Asymmetric Hydrogenation. Chem Rev 2022; 122:269-339. [PMID: 34677059 PMCID: PMC9998038 DOI: 10.1021/acs.chemrev.1c00496] [Citation(s) in RCA: 118] [Impact Index Per Article: 59.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Chiral amines are key structural motifs present in a wide variety of natural products, drugs, and other biologically active compounds. During the past decade, significant advances have been made with respect to the enantioselective synthesis of chiral amines, many of them based on catalytic asymmetric hydrogenation (AH). The present review covers the use of AH in the synthesis of chiral amines bearing a stereogenic center either in the α, β, or γ position with respect to the nitrogen atom, reported from 2010 to 2020. Therefore, we provide an overview of the recent advances in the AH of imines, enamides, enamines, allyl amines, and N-heteroaromatic compounds.
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Affiliation(s)
- Albert Cabré
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Baldiri Reixac 10, Barcelona E-08028, Spain.,Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, Universitat de Barcelona, Martí i Franquès 1, Barcelona E-08028, Spain
| | - Xavier Verdaguer
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Baldiri Reixac 10, Barcelona E-08028, Spain.,Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, Universitat de Barcelona, Martí i Franquès 1, Barcelona E-08028, Spain
| | - Antoni Riera
- Institute for Research in Biomedicine (IRB Barcelona), The Barcelona Institute of Science and Technology, Baldiri Reixac 10, Barcelona E-08028, Spain.,Departament de Química Inorgànica i Orgànica, Secció de Química Orgànica, Universitat de Barcelona, Martí i Franquès 1, Barcelona E-08028, Spain
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3
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Zhong YL, Moore JC, Shevlin M, Shultz CS, Kosjek B, Chen Y, Janey JM, Tan L. Scalable Asymmetric Synthesis of MK-8998, a T-Type Calcium Channel Antagonist. J Org Chem 2021; 87:2120-2128. [PMID: 34582192 DOI: 10.1021/acs.joc.1c01795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Two scalable and efficient synthetic routes for the synthesis of a T-type calcium channel antagonist MK-8998 were developed from a simple pyridine building block. The key step to set the stereochemistry relied on either chiral rhodium catalyst-mediated asymmetric hydrogenation of an enamide or transamination of an arylketone that provided the corresponding product in high enantioselectivity and high yield.
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Affiliation(s)
- Yong-Li Zhong
- Process Research and Development, Merck & Company, Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Jeffrey C Moore
- Process Research and Development, Merck & Company, Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Michael Shevlin
- Process Research and Development, Merck & Company, Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - C Scott Shultz
- Process Research and Development, Merck & Company, Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Birgit Kosjek
- Process Research and Development, Merck & Company, Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Yonggang Chen
- Process Research and Development, Merck & Company, Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Jacob M Janey
- Process Research and Development, Merck & Company, Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
| | - Lushi Tan
- Process Research and Development, Merck & Company, Inc., P.O. Box 2000, Rahway, New Jersey 07065, United States
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4
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Liu G, Tian K, Li C, You C, Tan X, Zhang H, Zhang X, Dong XQ. Nickel-Catalyzed Asymmetric Hydrogenation of Cyclic Alkenyl Sulfones, Benzo[ b]thiophene 1,1-Dioxides, with Mechanistic Studies. Org Lett 2021; 23:668-675. [PMID: 33471538 DOI: 10.1021/acs.orglett.0c03723] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A highly efficient catalytic system based on the cheap transition metal nickel for the asymmetric hydrogenation of challenging cyclic alkenyl sulfones, 3-substituted benzo[b]thiophene 1,1-dioxides, was first successfully developed. A series of hydrogenation products, chiral 2,3-dihydrobenzo[b]thiophene 1,1-dioxides, were obtained in high yields (95-99%) with excellent enantioselectivities (90-99% ee). According to the results of nonlinear effect studies, deuterium-labeling experiments, and DFT calculation investigations, a reasonable catalytic mechanism for this nickel-catalyzed asymmetric hydrogenation was provided, which displayed that the two added hydrogen atoms of the hydrogenation products could be from H2 through the insertion of Ni-H and subsequent hydrogenolysis.
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Affiliation(s)
- Gongyi Liu
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China.,Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan, Hubei 430205, China
| | - Kui Tian
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Chenzong Li
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China.,Pharmaceutical Research Institute, Wuhan Institute of Technology, Wuhan, Hubei 430205, China
| | - Cai You
- Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Xuefeng Tan
- Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Heng Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Xumu Zhang
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China.,Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Xiu-Qin Dong
- Engineering Research Center of Organosilicon Compounds & Materials, Ministry of Education, College of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China.,Suzhou Institute of Wuhan University, Suzhou, Jiangsu 215123, China
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5
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Dong C, Liu DS, Zhang L, Hu XP. Rh-catalyzed asymmetric hydrogenation of α-aryl-β-alkylvinyl esters with chiral ferrocenylphosphine-phosphoramidite ligand. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2020.152763] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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6
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7
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Tian Y, Kunz D. Nucleophilic Rh
I
Catalyzed Selective Isomerization of Terminal Aziridines to Enamides. ChemCatChem 2020. [DOI: 10.1002/cctc.202000597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Yingying Tian
- Institut für Anorganische Chemie Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
| | - Doris Kunz
- Institut für Anorganische Chemie Eberhard Karls Universität Tübingen Auf der Morgenstelle 18 72076 Tübingen Germany
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8
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Efficient and practical synthesis of N-acetyl enamides from ketoximes by unique iron catalytic system. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.05.006] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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9
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Yang T, Fan X, Zhao X, Yu W. Iron-Catalyzed Acyl Migration of Tertiary α-Azidyl Ketones: Synthetic Approach toward Enamides and Isoquinolones. Org Lett 2018; 20:1875-1879. [DOI: 10.1021/acs.orglett.8b00409] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Tonghao Yang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xing Fan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiaopeng Zhao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Wei Yu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
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10
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Zhang J, Liu C, Wang X, Chen J, Zhang Z, Zhang W. Rhodium-catalyzed asymmetric hydrogenation of β-branched enamides for the synthesis of β-stereogenic amines. Chem Commun (Camb) 2018; 54:6024-6027. [DOI: 10.1039/c8cc02798f] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
β-Branched simple enamides were hydrogenated to give β-stereogenic amines in quantitative yields and with excellent enantioselectivities.
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Affiliation(s)
- Jian Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Chong Liu
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Xingguang Wang
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Jianzhong Chen
- School of Chemistry and Chemical Engineering
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Zhenfeng Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs
- School of Pharmacy
- Shanghai Jiao Tong University
- Shanghai 200240
- P. R. China
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11
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Yamamoto C, Takamatsu K, Hirano K, Miura M. A Divergent Approach to Indoles and Oxazoles from Enamides by Directing-Group-Controlled Cu-Catalyzed Intramolecular C–H Amination and Alkoxylation. J Org Chem 2017; 82:9112-9118. [DOI: 10.1021/acs.joc.7b01667] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Chiaki Yamamoto
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Kazutaka Takamatsu
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koji Hirano
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry,
Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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12
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Guan Y, Wheeler SE. Automated Quantum Mechanical Predictions of Enantioselectivity in a Rhodium-Catalyzed Asymmetric Hydrogenation. Angew Chem Int Ed Engl 2017; 56:9101-9105. [PMID: 28586140 DOI: 10.1002/anie.201704663] [Citation(s) in RCA: 34] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2017] [Indexed: 11/07/2022]
Abstract
A computational toolkit (AARON: An automated reaction optimizer for new catalysts) is described that automates the density functional theory (DFT) based screening of chiral ligands for transition-metal-catalyzed reactions with well-defined reaction mechanisms but multiple stereocontrolling transition states. This is demonstrated for the Rh-catalyzed asymmetric hydrogenation of (E)-β-aryl-N-acetyl enamides, for which a new C2 -symmetric phosphorus ligand is designed.
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Affiliation(s)
- Yanfei Guan
- Department of Chemistry, Texas A&M University, College Station, TX, 77842, USA
| | - Steven E Wheeler
- Department of Chemistry, Texas A&M University, College Station, TX, 77842, USA
- Center for Computational Quantum Chemistry, Department of Chemistry, University of Georgia, Athens, GA, 30602, USA
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13
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Guan Y, Wheeler SE. Automated Quantum Mechanical Predictions of Enantioselectivity in a Rhodium‐Catalyzed Asymmetric Hydrogenation. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704663] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yanfei Guan
- Department of Chemistry Texas A&M University College Station TX 77842 USA
| | - Steven E. Wheeler
- Department of Chemistry Texas A&M University College Station TX 77842 USA
- Center for Computational Quantum Chemistry Department of Chemistry University of Georgia Athens GA 30602 USA
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14
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León F, González-Liste PJ, García-Garrido SE, Arribas I, Rubio M, Cadierno V, Pizzano A. Broad Scope Synthesis of Ester Precursors of Nonfunctionalized Chiral Alcohols Based on the Asymmetric Hydrogenation of α,β-Dialkyl-, α,β-Diaryl-, and α-Alkyl-β-aryl-vinyl Esters. J Org Chem 2017; 82:5852-5867. [DOI: 10.1021/acs.joc.7b00710] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Félix León
- Instituto
de Investigaciones Químicas (IIQ) and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), CSIC, Universidad de Sevilla, Américo Vespucio 49, 41092 Sevilla, Spain
| | - Pedro J. González-Liste
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Sergio E. García-Garrido
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Inmaculada Arribas
- Instituto
de Investigaciones Químicas (IIQ) and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), CSIC, Universidad de Sevilla, Américo Vespucio 49, 41092 Sevilla, Spain
| | - Miguel Rubio
- Instituto
de Investigaciones Químicas (IIQ) and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), CSIC, Universidad de Sevilla, Américo Vespucio 49, 41092 Sevilla, 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,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Antonio Pizzano
- Instituto
de Investigaciones Químicas (IIQ) and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), CSIC, Universidad de Sevilla, Américo Vespucio 49, 41092 Sevilla, Spain
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15
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Zhang W, Yu W, Yan Q, Liu Z, Zhang Y. Synthesis of substituted oxazoles via Pd-catalyzed tandem oxidative cyclization. Org Chem Front 2017. [DOI: 10.1039/c7qo00517b] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
An easy approach to access multisubstituted oxazoles via tandem oxidative cyclization is developed.
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Affiliation(s)
- Wei Zhang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Wenlong Yu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Qiangqiang Yan
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Zhanxiang Liu
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
| | - Yuhong Zhang
- Department of Chemistry
- Zhejiang University
- Hangzhou 310027
- China
- State Key Laboratory of Applied Organic Chemistry
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16
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Bebbington MWP. Natural product analogues: towards a blueprint for analogue-focused synthesis. Chem Soc Rev 2017; 46:5059-5109. [DOI: 10.1039/c6cs00842a] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A review of approaches to natural product analogues leads to the suggestion of new methods for the generation of biologically active natural product-like scaffolds.
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17
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Yang P, Lim LH, Chuanprasit P, Hirao H, Zhou JS. Nickel-Catalyzed Enantioselective Reductive Amination of Ketones with Both Arylamines and Benzhydrazide. Angew Chem Int Ed Engl 2016; 55:12083-7. [DOI: 10.1002/anie.201606821] [Citation(s) in RCA: 80] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2016] [Indexed: 01/01/2023]
Affiliation(s)
- Peng Yang
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Li Hui Lim
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Pratanphorn Chuanprasit
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Jianrong Steve Zhou
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
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18
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Yang P, Lim LH, Chuanprasit P, Hirao H, Zhou JS. Nickel-Catalyzed Enantioselective Reductive Amination of Ketones with Both Arylamines and Benzhydrazide. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201606821] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Peng Yang
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Li Hui Lim
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Pratanphorn Chuanprasit
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Hajime Hirao
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
| | - Jianrong Steve Zhou
- Division of Chemistry and Biological Chemistry; School of Physical and Mathematical Sciences; Nanyang Technological University; 21 Nanyang Link Singapore 637371 Singapore
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19
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Imamoto T. Searching for Practically Useful P-Chirogenic Phosphine Ligands. CHEM REC 2016; 16:2655-2669. [DOI: 10.1002/tcr.201600098] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/21/2016] [Indexed: 12/12/2022]
Affiliation(s)
- Tsuneo Imamoto
- Organic R&D Department; Nippon Chemical Industrial Co., Ltd; Koto-ku Tokyo 136-8515 Japan
- Department of Chemistry, Graduate School of Science; Chiba University, Yayoi-cho; Inage-ku Chiba 263-8522 Japan
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20
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González-Liste PJ, León F, Arribas I, Rubio M, García-Garrido SE, Cadierno V, Pizzano A. Highly Stereoselective Synthesis and Hydrogenation of (Z)-1-Alkyl-2-arylvinyl Acetates: a Wide Scope Procedure for the Preparation of Chiral Homobenzylic Esters. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00282] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Pedro J. González-Liste
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Félix León
- Instituto
de Investigaciones Químicas and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), CSIC and Universidad de Sevilla, 41092 Sevilla, Spain
| | - Inmaculada Arribas
- Instituto
de Investigaciones Químicas and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), CSIC and Universidad de Sevilla, 41092 Sevilla, Spain
| | - Miguel Rubio
- Instituto
de Investigaciones Químicas and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), CSIC and Universidad de Sevilla, 41092 Sevilla, Spain
| | - Sergio E. García-Garrido
- Laboratorio
de Compuestos Organometálicos y Catálisis (Unidad Asociada
al CSIC), Centro de Innovación en Química Avanzada (ORFEO−CINQA),
Departamento de Química Orgánica e Inorgánica,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 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,
Instituto Universitario de Química Organometálica “Enrique
Moles”, Universidad de Oviedo, 33006 Oviedo, Spain
| | - Antonio Pizzano
- Instituto
de Investigaciones Químicas and Centro de Innovación
en Química Avanzada (ORFEO−CINQA), CSIC and Universidad de Sevilla, 41092 Sevilla, Spain
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21
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Kleman P, Pizzano A. Rh catalyzed asymmetric olefin hydrogenation: enamides, enol esters and beyond. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.10.093] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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22
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Synthesis of Enamides by Ruthenium-Catalyzed Reaction of Alkyl Azides with Acid Anhydrides in Ionic Liquid. ChemCatChem 2015. [DOI: 10.1002/cctc.201500935] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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23
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An efficient synthesis of styrenyl enamides from 4-aryl-2-oxazolidinones in the presence of strong base. Tetrahedron Lett 2015. [DOI: 10.1016/j.tetlet.2015.08.026] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
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24
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Meng J, Gao M, Lv H, Zhang X. Highly Enantioselective Hydrogenation of ο-Alkoxy Tetrasubstituted Enamides Catalyzed by a Rh/(R,S)-JosiPhos Catalyst. Org Lett 2015; 17:1842-5. [DOI: 10.1021/acs.orglett.5b00401] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Jingjing Meng
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Min Gao
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Hui Lv
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
| | - Xumu Zhang
- College
of Chemistry and Molecular Sciences, Wuhan University, Wuhan, Hubei 430072, China
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25
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Xu H, Yang P, Chuanprasit P, Hirao H, Zhou JS. Nickel-Catalyzed Asymmetric Transfer Hydrogenation of Hydrazones and Other Ketimines. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201501018] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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26
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Xu H, Yang P, Chuanprasit P, Hirao H, Zhou JS. Nickel-Catalyzed Asymmetric Transfer Hydrogenation of Hydrazones and Other Ketimines. Angew Chem Int Ed Engl 2015; 54:5112-6. [DOI: 10.1002/anie.201501018] [Citation(s) in RCA: 103] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/03/2015] [Indexed: 12/20/2022]
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27
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Gao M, Meng JJ, Lv H, Zhang X. Highly Regio- and Enantioselective Synthesis of γ,δ-Unsaturated Amido Esters by Catalytic Hydrogenation of Conjugated Enamides. Angew Chem Int Ed Engl 2014; 54:1885-7. [DOI: 10.1002/anie.201410213] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/17/2014] [Indexed: 11/06/2022]
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28
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Highly Regio- and Enantioselective Synthesis of γ,δ-Unsaturated Amido Esters by Catalytic Hydrogenation of Conjugated Enamides. Angew Chem Int Ed Engl 2014. [DOI: 10.1002/ange.201410213] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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29
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Han J, Jeon M, Pak HK, Rhee YH, Park J. Exploiting the Nucleophilicity of NH Imines: Synthesis of Enamides from Alkyl Azides and Acid Anhydrides. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400584] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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30
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Reeves JT, Tan Z, Reeves DC, Song JJ, Han ZS, Xu Y, Tang W, Yang BS, Razavi H, Harcken C, Kuzmich D, Mahaney PE, Lee H, Busacca CA, Senanayake CH. Development of an Enantioselective Hydrogenation Route to (S)-1-(2-(Methylsulfonyl)pyridin-4-yl)propan-1-amine. Org Process Res Dev 2014. [DOI: 10.1021/op5001513] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Jonathan T. Reeves
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhulin Tan
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Diana C. Reeves
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Jinhua J. Song
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Zhengxu S. Han
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Yibo Xu
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Wenjun Tang
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Bing-Shiou Yang
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Hossein Razavi
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Christian Harcken
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Daniel Kuzmich
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Paige E. Mahaney
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Heewon Lee
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Carl A. Busacca
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
| | - Chris H. Senanayake
- Departments of
Chemical Development
and Medicinal Chemistry, Boehringer Ingelheim Pharmaceuticals, Inc., 900 Ridgebury Road, P.O. Box 368, Ridgefield, Connecticut 06877-0368, United States
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31
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Li S, Huang K, Zhang X. Enantioselective hydrogenation of α,β-disubstituted nitroalkenes. Chem Commun (Camb) 2014; 50:8878-81. [DOI: 10.1039/c4cc03942d] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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32
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Huang K, Emge TJ, Zhang X. Synthesis of a NovelP-Chiral 1,3-Oxaphospholane from Optically Pure Propylene Oxide. HETEROATOM CHEMISTRY 2014. [DOI: 10.1002/hc.21143] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Kexuan Huang
- Department of Chemistry and Chemical Biology; Rutgers; The State University of New Jersey; Piscataway New Jersey 08854
- Department of Medicinal Chemistry; Rutgers; The State University of New Jersey; Piscataway New Jersey 08854
| | - Thomas J. Emge
- Department of Chemistry and Chemical Biology; Rutgers; The State University of New Jersey; Piscataway New Jersey 08854
| | - Xumu Zhang
- Department of Chemistry and Chemical Biology; Rutgers; The State University of New Jersey; Piscataway New Jersey 08854
- Department of Medicinal Chemistry; Rutgers; The State University of New Jersey; Piscataway New Jersey 08854
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33
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Transition metal-catalyzed enantioselective hydrogenation of enamides and enamines. Top Curr Chem (Cham) 2014. [PMID: 24595741 DOI: 10.1007/128_2013_482] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register]
Abstract
Transition metal-catalyzed enantioselective hydrogenation of enamides and enamines is one of the most important methods for the preparation of optically active amines. This review describes the recent developments of highly efficient catalytic asymmetric hydrogenation of enamides, and enamines. It specifically focuses on the substrates because hydrogenation of enamides and enamines is highly dependent on the substrates although the chiral metal catalysts play a significant role.
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34
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Wang ZM, Sang XL, Che CM, Chen J. Ruthenium(IV) porphyrin catalyzed highly selective oxidation of internal alkenes into ketones with Cl2pyNO as terminal oxidant. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.01.098] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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35
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Gou Q, Deng B, Zhang H, Qin J. Arylations of Substituted Enamides by Aryl Iodides: Regio- and Stereoselective Synthesis of (Z)-β-Amido-β-Arylacrylates. Org Lett 2013; 15:4604-7. [DOI: 10.1021/ol402215f] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Quan Gou
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan, 650091, P. R. China
| | - Bin Deng
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan, 650091, P. R. China
| | - Hongbin Zhang
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan, 650091, P. R. China
| | - Jun Qin
- School of Chemical Science and Technology, Yunnan University, Kunming, Yunnan, 650091, P. R. China
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36
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Etayo P, Vidal-Ferran A. Rhodium-catalysed asymmetric hydrogenation as a valuable synthetic tool for the preparation of chiral drugs. Chem Soc Rev 2013; 42:728-54. [PMID: 23132556 DOI: 10.1039/c2cs35410a] [Citation(s) in RCA: 289] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
During the last few decades, rhodium-catalysed asymmetric hydrogenation of diverse alkene classes has emerged as a powerful synthetic tool in the pharmaceutical industry, contributing to the manufacturing of chiral drugs, recent drug candidates for clinical trials, and major synthetic precursors of drugs. Numerous efficient chiral rhodium complexes, most of which are derived from enantiopure phosphorus ligands, have been employed for the preparation of chiral drugs and intermediates thereof. This review article is intended to provide an updated overview of the most striking contributions in this field, organised according to substrate class: acrylate derivatives, itaconate derivatives, α-substituted enamides, α-arylenol acetates, and minimally functionalised olefins.
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Affiliation(s)
- Pablo Etayo
- Institute of Chemical Research of Catalonia (ICIQ), Avgda. Països Catalans 16, E-43007 Tarragona, Spain
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37
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Arribas I, Rubio M, Kleman P, Pizzano A. Rhodium Phosphine–Phosphite Catalysts in the Hydrogenation of Challenging N-(3,4-dihydronaphthalen-2-yl) Amide Derivatives. J Org Chem 2013; 78:3997-4005. [DOI: 10.1021/jo400345v] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Inmaculada Arribas
- Instituto de Investigaciones
Quı́micas, CSIC and Universidad de Sevilla, Avda Américo Vespucio 49, Isla de
la Cartuja, 41092 Sevilla, Spain
| | - Miguel Rubio
- Instituto de Investigaciones
Quı́micas, CSIC and Universidad de Sevilla, Avda Américo Vespucio 49, Isla de
la Cartuja, 41092 Sevilla, Spain
| | - Patryk Kleman
- Instituto de Investigaciones
Quı́micas, CSIC and Universidad de Sevilla, Avda Américo Vespucio 49, Isla de
la Cartuja, 41092 Sevilla, Spain
| | - Antonio Pizzano
- Instituto de Investigaciones
Quı́micas, CSIC and Universidad de Sevilla, Avda Américo Vespucio 49, Isla de
la Cartuja, 41092 Sevilla, Spain
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38
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Liu G, Liu X, Cai Z, Jiao G, Xu G, Tang W. Design of Phosphorus Ligands with Deep Chiral Pockets: Practical Synthesis of Chiral β-Arylamines by Asymmetric Hydrogenation. Angew Chem Int Ed Engl 2013; 52:4235-8. [DOI: 10.1002/anie.201300646] [Citation(s) in RCA: 113] [Impact Index Per Article: 10.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2013] [Indexed: 11/12/2022]
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39
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Liu G, Liu X, Cai Z, Jiao G, Xu G, Tang W. Design of Phosphorus Ligands with Deep Chiral Pockets: Practical Synthesis of Chiral β-Arylamines by Asymmetric Hydrogenation. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201300646] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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40
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Mohar B, Stephan M. Practical Enantioselective Hydrogenation of α-Aryl- and α-Carboxyamidoethylenes by Rhodium(I)-{1,2-Bis[(o-tert-butoxyphenyl)(phenyl)phosphino]ethane}. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201200780] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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41
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Murugan K, Huang DW, Chien YT, Liu ST. An efficient preparation of N-acetyl enamides catalyzed by Ru(II) complexes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2012.10.027] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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42
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Sun T, Zhang X. A Simple Synthetic Route to Enantiopure α-Hydroxy Ketone Derivatives by Asymmetric Hydrogenation. Adv Synth Catal 2012. [DOI: 10.1002/adsc.201200224] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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43
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Zhu SF, Liu T, Yang S, Song S, Zhou QL. Enantioselective hydrogenation of (Z)- and (E)-β-arylenamides catalyzed by rhodium complexes of monodentate chiral spiro phosphorous ligands: a new access to chiral β-arylisopropylamines. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.06.032] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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44
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Huang K, Zhang X, Geng H, Li SK, Zhang X. Highly Enantioselective Hydrogenation of β-Ketoenamides with the Rh-ZhangPhos Catalyst. ACS Catal 2012. [DOI: 10.1021/cs300037z] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kexuan Huang
- Department of Chemistry and
Chemical Biology and Department of Medicinal Chemistry, Rutgers, The State University of New Jersey, Piscataway,
New Jersey 08854, United States
| | - Xiaowei Zhang
- Department of Chemistry and
Chemical Biology and Department of Medicinal Chemistry, Rutgers, The State University of New Jersey, Piscataway,
New Jersey 08854, United States
| | - Huiling Geng
- College of Science, Northwest Agriculture and Forestry University,Yangling,
Shaanxi 712100, China
| | - Sheng-kun Li
- College of Science, Northwest Agriculture and Forestry University,Yangling,
Shaanxi 712100, China
| | - Xumu Zhang
- Department of Chemistry and
Chemical Biology and Department of Medicinal Chemistry, Rutgers, The State University of New Jersey, Piscataway,
New Jersey 08854, United States
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45
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Reeves JT, Tan Z, Han ZS, Li G, Zhang Y, Xu Y, Reeves DC, Gonnella NC, Ma S, Lee H, Lu BZ, Senanayake CH. Direct Titanium-Mediated Conversion of Ketones into Enamides with Ammonia and Acetic Anhydride. Angew Chem Int Ed Engl 2012; 51:1400-4. [DOI: 10.1002/anie.201107601] [Citation(s) in RCA: 46] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2011] [Revised: 12/07/2011] [Indexed: 11/09/2022]
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46
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Reeves JT, Tan Z, Han ZS, Li G, Zhang Y, Xu Y, Reeves DC, Gonnella NC, Ma S, Lee H, Lu BZ, Senanayake CH. Direct Titanium-Mediated Conversion of Ketones into Enamides with Ammonia and Acetic Anhydride. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201107601] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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47
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Ager DJ, de Vries AHM, de Vries JG. Asymmetric homogeneous hydrogenations at scale. Chem Soc Rev 2012; 41:3340-80. [DOI: 10.1039/c2cs15312b] [Citation(s) in RCA: 266] [Impact Index Per Article: 22.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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48
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Li X, Huang L, Chen H, Wu W, Huang H, Jiang H. Copper-catalyzed oxidative [2 + 2 + 1] cycloaddition: regioselective synthesis of 1,3-oxazoles from internal alkynes and nitriles. Chem Sci 2012. [DOI: 10.1039/c2sc21041j] [Citation(s) in RCA: 97] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022] Open
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49
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Lloret Fillol J, Kruckenberg A, Scherl P, Wadepohl H, Gade LH. Stitching Phospholanes Together Piece by Piece: New Modular Di- and Tridentate Stereodirecting Ligands. Chemistry 2011; 17:14047-62. [DOI: 10.1002/chem.201101864] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2011] [Indexed: 11/08/2022]
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50
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Chávez MÁ, Vargas S, Suárez A, Álvarez E, Pizzano A. Highly Enantioselective Hydrogenation of β-Acyloxy and β-Acylamino α,β-Unsaturated Phosphonates Catalyzed by Rhodium Phosphane-Phosphite Complexes. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201000611] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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