1
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Pecchini P, Fochi M, Bartoccini F, Piersanti G, Bernardi L. Enantioselective organocatalytic strategies to access noncanonical α-amino acids. Chem Sci 2024; 15:5832-5868. [PMID: 38665517 PMCID: PMC11041364 DOI: 10.1039/d4sc01081g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2024] [Accepted: 03/23/2024] [Indexed: 04/28/2024] Open
Abstract
Organocatalytic asymmetric synthesis has evolved over the years and continues to attract the interest of many researchers worldwide. Enantiopure noncanonical amino acids (ncAAs) are valuable building blocks in organic synthesis, medicinal chemistry, and chemical biology. They are employed in the elaboration of peptides and proteins with enhanced activities and/or improved properties compared to their natural counterparts, as chiral catalysts, in chiral ligand design, and as chiral building blocks for asymmetric syntheses of complex molecules, including natural products. The linkage of ncAA synthesis and enantioselective organocatalysis, the subject of this perspective, tries to imitate the natural biosynthetic process. Herein, we present contemporary and earlier developments in the field of organocatalytic activation of simple feedstock materials, providing potential ncAAs with diverse side chains, unique three-dimensional structures, and a high degree of functionality. These asymmetric organocatalytic strategies, useful for forging a wide range of C-C, C-H, and C-N bonds and/or combinations thereof, vary from classical name reactions, such as Ugi, Strecker, and Mannich reactions, to the most advanced concepts such as deracemisation, transamination, and carbene N-H insertion. Concurrently, we present some interesting mechanistic studies/models, providing information on the chirality transfer process. Finally, this perspective highlights, through the diversity of the amino acids (AAs) not selected by nature for protein incorporation, the most generic modes of activation, induction, and reactivity commonly used, such as chiral enamine, hydrogen bonding, Brønsted acids/bases, and phase-transfer organocatalysis, reflecting their increasingly important role in organic and applied chemistry.
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Affiliation(s)
- Pietro Pecchini
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis C3 & INSTM RU Bologna V. Gobetti 85 40129 Bologna Italy
| | - Mariafrancesca Fochi
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis C3 & INSTM RU Bologna V. Gobetti 85 40129 Bologna Italy
| | - Francesca Bartoccini
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino PU Italy
| | - Giovanni Piersanti
- Department of Biomolecular Sciences, University of Urbino Carlo Bo Piazza Rinascimento 6 61029 Urbino PU Italy
| | - Luca Bernardi
- Department of Industrial Chemistry "Toso Montanari", Center for Chemical Catalysis C3 & INSTM RU Bologna V. Gobetti 85 40129 Bologna Italy
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2
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Popov KK, Campbell JLP, Kysilka O, Hošek J, Davies CD, Pour M, Kočovský P. Reductive Amination Revisited: Reduction of Aldimines with Trichlorosilane Catalyzed by Dimethylformamide─Functional Group Tolerance, Scope, and Limitations. J Org Chem 2021; 87:920-943. [PMID: 34841878 DOI: 10.1021/acs.joc.1c01561] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Aldimines, generated in situ from aliphatic, aromatic, and heteroaromatic aldehydes and aliphatic, aromatic, and heteroaromatic primary or secondary amines, can be reduced with trichlorosilane in the presence of dimethylformamide (DMF) as an organocatalyst (≤10 mol %) in toluene or CH2Cl2 at room temperature. The reduction tolerates ketone carbonyls, esters, amides, nitriles, sulfones, sulfonamides, NO2, SF5, and CF3 groups, boronic esters, azides, phosphine oxides, C═C and C≡C bonds, and ferrocenyl nucleus, but sulfoxides and N-oxides are reduced. α,β-Unsaturated aldimines undergo 1,2-reduction only, leaving the C═C bond intact. N-Monoalkylation of primary amines is attained with a 1:1 aldehyde to amine ratio, whereas excess of the aldehyde (≥2:1) allows second alkylation, giving rise to tertiary amines. Reductive N-alkylation of α-amino acids proceeds without racemization; the resulting products, containing a C≡C bond or N3 group, are suitable for click chemistry. This reaction thus offers advantages over the traditional methods (borohydride reduction or catalytic hydrogenation) in terms of efficiency and chemoselectivity. Solubility of some of the reacting partners appears to be the only limitation. The byproducts generated by the workup with aqueous NaHCO3 (i.e., NaCl and silica) are environmentally benign. As a greener alternative, DMA can be employed as a catalyst instead of DMF.
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Affiliation(s)
- Kirill K Popov
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic
| | - Joanna L P Campbell
- Syngenta, Grangemouth Manufacturing Centre, Earl's Road, Grangemouth FK3 8XG, U.K
| | - Ondřej Kysilka
- Trelleborg Bohemia, Akademika Bedrny 531/8a, Věkoše, 500 03 Hradec Králové Czech Republic
| | - Jan Hošek
- Farmak, Na vlčinci 16/3, Klášterní Hradisko, 77900 Olomouc, Czech Republic
| | | | - Milan Pour
- Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic
| | - Pavel Kočovský
- Department of Organic Chemistry, Faculty of Science, Charles University, Hlavova 8, 128 43 Prague 2, Czech Republic.,Department of Organic and Bioorganic Chemistry, Faculty of Pharmacy, Charles University, Heyrovského 1203, 500 05 Hradec Králové, Czech Republic.,Institute of Organic Chemistry and Biochemistry, Academy of Sciences of the Czech Republic, Flemingovo 2, 166 10 Prague 6, Czech Republic
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Evaluation of 3,3′-Triazolyl Biisoquinoline N,N′-Dioxide Catalysts for Asymmetric Hydrosilylation of Hydrazones with Trichlorosilane. Catalysts 2021; 11. [PMID: 36285183 PMCID: PMC9589403 DOI: 10.3390/catal11091103] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023] Open
Abstract
A new class of axial-chiral biisoquinoline
N,N′-dioxides was evaluated as
catalysts for the enantioselective hydrosilylation of acyl hydrazones with
trichlorosilane. While these catalysts provided poor to moderate reactivity and
enantioselectivity, this study represents the first example of the
organocatalytic asymmetric reduction of acyl hydrazones. In addition, the
structures and energies of two possible diastereomeric
catalyst–trichlorosilane complexes
(2a–HSiCl3) were analyzed using density
functional theory calculations.
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4
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Kotani S, Hanamure T, Mori Y, Nakajima M. Phosphine‐oxide‐catalyzed Enantioselective Cross‐aldol Reactions of Aldehydes with Trichlorosilane as Lewis Acid Promoter. ChemCatChem 2020. [DOI: 10.1002/cctc.202000914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shunsuke Kotani
- Graduate School of Pharmaceutical Sciences Kumamoto University 5-1 Oe-honmachi Chuo-ku Kumamoto 862-0973 Japan
| | - Takuya Hanamure
- Graduate School of Pharmaceutical Sciences Kumamoto University 5-1 Oe-honmachi Chuo-ku Kumamoto 862-0973 Japan
| | - Yoshiki Mori
- Graduate School of Pharmaceutical Sciences Kumamoto University 5-1 Oe-honmachi Chuo-ku Kumamoto 862-0973 Japan
| | - Makoto Nakajima
- Graduate School of Pharmaceutical Sciences Kumamoto University 5-1 Oe-honmachi Chuo-ku Kumamoto 862-0973 Japan
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5
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Recent advances in reactions promoted by amino acids and oligopeptides. PHYSICAL SCIENCES REVIEWS 2020. [DOI: 10.1515/psr-2018-0086] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Abstract
Abstract
During the last 20 years, Organocatalysis has become one of the major fields of Catalysis. Herein, we provide a recent overview on reactions where the use of amino acids and peptides as the organocatalysts was employed. All aspects regarding aldol reactions, Michael reactions, epoxidation, Henry reactions and many others that are crucial for the reaction conditions and reaction mechanisms are discussed.
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6
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Yang H, Wierzbicki M, Bois DRD, Nowick JS. X-ray Crystallographic Structure of a Teixobactin Derivative Reveals Amyloid-like Assembly. J Am Chem Soc 2018; 140:14028-14032. [PMID: 30296063 PMCID: PMC6356018 DOI: 10.1021/jacs.8b07709] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
This paper describes the X-ray crystallographic structure of a derivative of the antibiotic teixobactin and shows that its supramolecular assembly through the formation of antiparallel β-sheets creates binding sites for oxyanions. An active derivative of teixobactin containing lysine in place of allo-enduracididine assembles to form amyloid-like fibrils, which are observed through a thioflavin T fluorescence assay and by transmission electron microscopy. A homologue, bearing an N-methyl substituent, to attenuate fibril formation, and an iodine atom, to facilitate X-ray crystallographic phase determination, crystallizes as double helices of β-sheets that bind sulfate anions. β-Sheet dimers are key subunits of these assemblies, with the N-terminal methylammonium group of one monomer and the C-terminal macrocycle of the other monomer binding each anion. These observations suggest a working model for the mechanism of action of teixobactin, in which the antibiotic assembles and the assemblies bind lipid II and related bacterial cell wall precursors on the surface of Gram-positive bacteria.
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Affiliation(s)
- Hyunjun Yang
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Michał Wierzbicki
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - Derek R. Du Bois
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
| | - James S. Nowick
- Department of Chemistry, University of California, Irvine, Irvine, California 92697-2025, United States
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7
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Reep C, Morgante P, Peverati R, Takenaka N. Axial-Chiral Biisoquinoline N, N'-Dioxides Bearing Polar Aromatic C-H Bonds as Catalysts in Sakurai-Hosomi-Denmark Allylation. Org Lett 2018; 20:5757-5761. [PMID: 30199262 DOI: 10.1021/acs.orglett.8b02457] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
The design, synthesis, and evaluation of axial-chiral biisoquinolines bearing polar aromatic C-H bonds as Lewis base catalysts are reported. Lewis bases containing the 3,5-bis(trifluoromethyl)phenyl group were found to be significantly more enantioselective for a wider range of substrates than those bearing aromatic residues that are not strongly electron-deficient in the allylation of aldehydes with allyltrichlorosilane. Also, optically pure 3,3'-dibromo-1,1'-biisoquinoline N, N'-dioxide that has not been previously reported was synthesized as a common catalyst precursor to facilitate the study.
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8
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Wakchaure VN, List B. Katalytische asymmetrische reduktive Kondensation von N-H-Iminen: Synthese vonC2-symmetrischen sekundären Aminen. Angew Chem Int Ed Engl 2016. [DOI: 10.1002/ange.201608329] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Vijay N. Wakchaure
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung; Kaiser-Wilhelm-Platz 1 45470 Mülheim an der Ruhr Deutschland
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9
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Wakchaure VN, List B. Catalytic Asymmetric Reductive Condensation of N-H Imines: Synthesis ofC2-Symmetric Secondary Amines. Angew Chem Int Ed Engl 2016; 55:15775-15778. [DOI: 10.1002/anie.201608329] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Indexed: 12/29/2022]
Affiliation(s)
- Vijay N. Wakchaure
- Max-Planck-Institut für Kohlenforschung; Kaiser -Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung; Kaiser -Wilhelm-Platz 1 45470 Mülheim an der Ruhr Germany
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10
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Organocatalytic Transfer Hydrogenation and Hydrosilylation Reactions. Top Curr Chem (Cham) 2016; 374:29. [DOI: 10.1007/s41061-016-0032-4] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2015] [Accepted: 04/26/2016] [Indexed: 10/21/2022]
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11
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Wakchaure VN, Kaib PSJ, Leutzsch M, List B. Disulfonimide‐Catalyzed Asymmetric Reduction of
N
‐Alkyl Imines. Angew Chem Int Ed Engl 2015; 54:11852-6. [DOI: 10.1002/anie.201504052] [Citation(s) in RCA: 76] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/04/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Vijay N. Wakchaure
- Max‐Planck‐Institut für Kohlenforschung, Kaiser ‐Wilhelm‐Platz 1, 45470 Mülheim an der Ruhr (Germany)
| | - Philip S. J. Kaib
- Max‐Planck‐Institut für Kohlenforschung, Kaiser ‐Wilhelm‐Platz 1, 45470 Mülheim an der Ruhr (Germany)
| | - Markus Leutzsch
- 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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12
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Wakchaure VN, Kaib PSJ, Leutzsch M, List B. Disulfonimid-katalysierte asymmetrische Reduktion vonN-Alkyliminen. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504052] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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13
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Choi J, Ha HJ. Facile Synthesis of N-Methylated Amino Acids from Chiral Aziridine-2-carboxylate. B KOREAN CHEM SOC 2015. [DOI: 10.1002/bkcs.10048] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jihye Choi
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin 449-719 Korea
| | - Hyun-Joon Ha
- Department of Chemistry; Hankuk University of Foreign Studies; Yongin 449-719 Korea
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14
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Wang C, Wu X, Zhou L, Sun J. l-Valine derived chiral N-sulfinamides as effective organocatalysts for the asymmetric hydrosilylation of N-alkyl and N-aryl protected ketimines. Org Biomol Chem 2015; 13:577-82. [PMID: 25380100 DOI: 10.1039/c4ob01257g] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
l-Valine derived N-sulfinamides have been developed as efficient enantioselective Lewis basic organocatalysts for the asymmetric reduction of N-aryl and N-alkyl ketimines with trichlorosilane.
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Affiliation(s)
- Chao Wang
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Xinjun Wu
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Li Zhou
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
| | - Jian Sun
- Natural Products Research Centre
- Chengdu Institute of Biology
- Chinese Academy of Sciences
- Chengdu
- China
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15
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Corre Y, Iali W, Hamdaoui M, Trivelli X, Djukic JP, Agbossou-Niedercorn F, Michon C. Efficient hydrosilylation of imines using catalysts based on iridium(iii) metallacycles. Catal Sci Technol 2015. [DOI: 10.1039/c4cy01233j] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Ir(iii) metallacycles were applied as catalysts for the hydrosilylation of ketimines and aldimines by using sodium tetrakis[(3,5-trifluoromethyl)phenyl]borate, NaBArF24, as an additive. By using a slight excess of the organosilane reagent, the reactions proceeded rapidly and efficiently, at low catalyst loadings and at room temperature.
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Affiliation(s)
- Y. Corre
- Université Lille Nord de France
- 59000 Lille
- France
- ENSCL
- UCCS-CCM-CCCF UMR 8181
| | - W. Iali
- Institut de Chimie de Strasbourg
- UMR 7177
- Université de Strasbourg
- 4 rue Blaise Pascal
- F-67000 Strasbourg
| | - M. Hamdaoui
- Institut de Chimie de Strasbourg
- UMR 7177
- Université de Strasbourg
- 4 rue Blaise Pascal
- F-67000 Strasbourg
| | - X. Trivelli
- UGSF CNRS
- UMR 8576
- Université Lille Nord de France
- France
| | - J.-P. Djukic
- Institut de Chimie de Strasbourg
- UMR 7177
- Université de Strasbourg
- 4 rue Blaise Pascal
- F-67000 Strasbourg
| | | | - C. Michon
- Université Lille Nord de France
- 59000 Lille
- France
- CNRS
- UCCS UMR 8181
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16
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Ge X, Qian C, Ye X, Chen X. Asymmetric reduction of imines with trichlorosilane catalyzed by valine-derived formamide immobilized onto magnetic nano-Fe3O4. RSC Adv 2015. [DOI: 10.1039/c5ra08516k] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Magnetic nano-Fe3O4-supported organocatalysts were synthesized by anchoring valine-derived formamide onto the surface of Fe3O4 magnetic nanoparticles, which were applied in the asymmetric reduction of imines with trichlorosilane.
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Affiliation(s)
- Xin Ge
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- P.R China
- School of Chemical and Material Engineering
| | - Chao Qian
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- P.R China
| | - Xiaoming Ye
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- P.R China
| | - Xinzhi Chen
- Key Laboratory of Biomass Chemical Engineering of Ministry of Education
- College of Chemical and Biological Engineering
- Zhejiang University
- P.R China
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17
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Synthesis of novel carbohydrate-based valine-derived formamide organocatalysts by CuAAC click chemistry and their application in asymmetric reduction of imines with trichlorosilane. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.10.003] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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18
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Ge X, Qian C, Chen Y, Chen X. Novel carbohydrate-derived pyridinecarboxylic organocatalysts for the enantioselective reduction of imines with trichlorosilane. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.03.015] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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19
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Jiang Y, Chen X, Hu XY, Shu C, Zhang YH, Zheng YS, Lian CX, Yuan WC, Zhang XM. Stereoselective Lewis Base-Catalyzed Asymmetric Hydrosilylation of α-Acetamido-β-enamino Esters: Straightforward Approach for the Construction of α,β-Diamino Acid Derivatives. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300184] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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20
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Abstract
Zyzzyanones A-D is a group of biologically active marine alkaloids isolated from Australian marine sponge Zyzzya fuliginosa. They contain a unique bispyrroloquinone ring system as the core structure. The first total synthesis of all four zyzzyanones is described here. The synthesis of these alkaloids started from a previously known 6-benzylamino indole-4,7-quinone derivative and involves 6-7 steps. The key step in the synthesis involves the construction of a pyrrole ring in one step using a Mn(OAc)3 mediated oxidative free radical cyclization reaction of a 6-benzylamino indole-4,7-quinone derivative with 4-benzyloxyphenyl acetaldehyde diethyl acetal in CH3CN.
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Affiliation(s)
- Dwayaja H Nadkarni
- Department of Chemistry, University of Alabama at Birmingham, 901 14 Street South, Birmingham, Alabama 35294, USA
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21
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Abstract
Asymmetric reductive amination (ARA) affords synthetically valuable chiral amines straightforwardly. This chapter reviews the recent advances made in the area, focusing on ARA by hydrogenation, transfer hydrogenation, organocatalytic reduction, and biocatalytic reduction.
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Affiliation(s)
- Chao Wang
- Key Laboratory of Applied Surface and Colloid Chemistry of Ministry of Education, and Department of Chemistry and Chemical Engineering, Shaanxi Normal University, Xi'an, 710062, China,
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22
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Kanemitsu T, Umehara A, Haneji R, Nagata K, Itoh T. A simple proline-based organocatalyst for the enantioselective reduction of imines using trichlorosilane as a reductant. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.03.035] [Citation(s) in RCA: 33] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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23
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Geoghegan P, O’Leary P. Hydroxyamide-Based Ligands and Their Use in the Asymmetric Catalysis of Key Organic Transformations. ACS Catal 2012. [DOI: 10.1021/cs300111b] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Paul Geoghegan
- School of Chemistry, National University of Ireland Galway, Galway, Ireland, SMACT (Synthetic
Methods, Asymmetric Catalytic Transformations)
| | - Patrick O’Leary
- School of Chemistry, National University of Ireland Galway, Galway, Ireland, SMACT (Synthetic
Methods, Asymmetric Catalytic Transformations)
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24
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Malkov AV, Stewart-Liddon AJP, McGeoch GD, Ramírez-López P, Kočovský P. Catalyst development for organocatalytic hydrosilylation of aromatic ketones and ketimines. Org Biomol Chem 2012; 10:4864-77. [DOI: 10.1039/c2ob25472g] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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25
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Jones S, Warner CJA. Trichlorosilane mediated asymmetric reductions of the CN bond. Org Biomol Chem 2012; 10:2189-200. [PMID: 22307888 DOI: 10.1039/c2ob06854k] [Citation(s) in RCA: 94] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Simon Jones
- Department of Chemistry, University of Sheffield, Dainton Building, Brook Hill, Sheffield S3 7HF, UK.
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26
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Chelucci G, Marchetti M, Malkov AV, Friscourt F, Swarbrick ME, Kočovský P. New monoterpene-derived phosphinopyridine ligands and their application in the enantioselective iridium-catalyzed hydrogenation. Tetrahedron 2011. [DOI: 10.1016/j.tet.2011.05.075] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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27
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Guizzetti S, Benaglia M. Trichlorosilane‐Mediated Stereoselective Reduction of C=N Bonds. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000728] [Citation(s) in RCA: 105] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Stefania Guizzetti
- Dipartimento di Chimica Organica e Industriale, Universitàdegli Studi di Milano, Via Golgi 19, 20133 Milano, Italy, Fax: +39‐02‐50314159
| | - Maurizio Benaglia
- Dipartimento di Chimica Organica e Industriale, Universitàdegli Studi di Milano, Via Golgi 19, 20133 Milano, Italy, Fax: +39‐02‐50314159
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28
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Malamakal RM, Hess WR, Davis TA. Highly efficient diastereoselective reduction of alpha-fluoroimines. Org Lett 2010; 12:2186-9. [PMID: 20408600 PMCID: PMC2929650 DOI: 10.1021/ol100647b] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A highly selective reduction of alpha-fluoroimines to the corresponding beta-fluoroamines has been developed utilizing trichlorosilane as the reductant. The key aspect of this reaction is the ability of fluorine and nitrogen to activate organosilanes leading to high diastereoselectivity (>100:1) in the product distribution. This new method provides a new avenue for the diastereoselective synthesis of beta-fluorinated amines in good yields and selectivity.
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Affiliation(s)
| | | | - Todd A. Davis
- Department of Chemistry, Idaho State University, Campus Box 8023, Pocatello, ID 83209
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Wakchaure V, Zhou J, Hoffmann S, List B. Catalytic Asymmetric Reductive Amination of α-Branched Ketones. Angew Chem Int Ed Engl 2010. [DOI: 10.1002/ange.201001715] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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30
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Wakchaure V, Zhou J, Hoffmann S, List B. Catalytic Asymmetric Reductive Amination of α-Branched Ketones. Angew Chem Int Ed Engl 2010; 49:4612-4. [DOI: 10.1002/anie.201001715] [Citation(s) in RCA: 132] [Impact Index Per Article: 9.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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31
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Nugent T, El-Shazly M. Chiral Amine Synthesis - Recent Developments and Trends for Enamide Reduction, Reductive Amination, and Imine Reduction. Adv Synth Catal 2010. [DOI: 10.1002/adsc.200900719] [Citation(s) in RCA: 722] [Impact Index Per Article: 51.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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32
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Chiral relay in NHC-mediated asymmetric β-lactam synthesis II; asymmetry from NHCs derived from acyclic 1,2-diamines. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.03.002] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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33
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Duguet N, Donaldson A, Leckie SM, Douglas J, Shapland P, Brown TB, Churchill G, Slawin AM, Smith AD. Chiral relay in NHC-mediated asymmetric β-lactam synthesis I; substituent effects in NHCs derived from (1R,2R)-cyclohexane-1,2-diamine. ACTA ACUST UNITED AC 2010. [DOI: 10.1016/j.tetasy.2010.03.001] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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34
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Xue ZY, Jiang Y, Yuan WC, Zhang XM. The First Highly Enantioselective Lewis Base Organocatalyzed Hydrosilylation of α-Imino Esters. European J Org Chem 2010. [DOI: 10.1002/ejoc.200901312] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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35
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Figlus M, Caldwell ST, Walas D, Yesilbag G, Cooke G, Kocovský P, Malkov AV, Sanyal A. Dendron-anchored organocatalysts: the asymmetric reduction of imines with trichlorosilane, catalysed by an amino acid-derived formamide appended to a dendron. Org Biomol Chem 2010; 8:137-41. [PMID: 20024144 DOI: 10.1039/b916601g] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Affiliation(s)
- Marek Figlus
- WestCHEM, Department of Chemistry, Joseph Black Building, University of Glasgow, UK
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36
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Malkov AV, Vranková K, Sigerson RC, Stončius S, Kočovský P. New organocatalysts for the asymmetric reduction of imines with trichlorosilane. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.08.048] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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37
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Malkov AV, Vranková K, Černý M, Kočovský P. On the Selective N-Methylation of BOC-Protected Amino Acids. J Org Chem 2009; 74:8425-7. [DOI: 10.1021/jo9016293] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Andrei V. Malkov
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Kvetoslava Vranková
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, U.K
| | - Miloslav Černý
- Department of Organic Chemistry, Charles University, 128 40, Prague 2, Czech Republic
| | - Pavel Kočovský
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, U.K
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38
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Malkov A, Figlus M, Prestly M, Rabani G, Cooke G, Kočovský P. Soluble Polymer-Supported Organocatalysts: Asymmetric Reduction of Imines with Trichlorosilane Catalyzed by an Amino Acid Derived Formamide Anchored to a Soluble Polymer. Chemistry 2009; 15:9651-4. [DOI: 10.1002/chem.200901573] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Chiral Lewis base promoted trichlorosilane reduction of ketimines. An enantioselective organocatalytic synthesis of chiral amines. Tetrahedron 2009. [DOI: 10.1016/j.tet.2009.06.015] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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40
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Collados JF, Quiroga-Feijóo ML, Alvarez-Ibarra C. New Chiral Lewis Bases Derived from L-Pipecolinic Acid Showing Stereocontrol Highly Dependent on the Catalyst Design in the Hydrosilylation ofN-Phenyl Ketimines. European J Org Chem 2009. [DOI: 10.1002/ejoc.200900284] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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41
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Frost CG, Hartley BC. Lewis Base-Promoted Hydrosilylation of Cyclic Malonates: Synthesis of β-Substituted Aldehydes and γ-Substituted Amines. J Org Chem 2009; 74:3599-602. [DOI: 10.1021/jo900390d] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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42
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Malkov AV, Figlus M, Cooke G, Caldwell ST, Rabani G, Prestly MR, Kočovský P. Organocatalysts immobilised onto gold nanoparticles: application in the asymmetric reduction of imines with trichlorosilane. Org Biomol Chem 2009; 7:1878-83. [DOI: 10.1039/b821391g] [Citation(s) in RCA: 41] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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43
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Wu P, Wang Z, Cheng M, Zhou L, Sun J. Development of highly enantioselective new Lewis basic N-formamide organocatalysts for hydrosilylation of imines with an unprecedented substrate profile. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.09.034] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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44
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Gautier FM, Jones S, Martin SJ. Asymmetric reduction of ketimines with trichlorosilane employing an imidazole derived organocatalyst. Org Biomol Chem 2008; 7:229-31. [PMID: 19109665 DOI: 10.1039/b816051a] [Citation(s) in RCA: 69] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organocatalysts for the asymmetric reduction of ketimines are presented that function well at low catalyst loadings providing chiral amines in good yield and enantioselectivity, the latter appearing to be independent of the ketimine substrate geometry.
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Affiliation(s)
- François-Moana Gautier
- Department of Chemistry, University of Sheffield, Dainton Building, Brook Hill, Sheffield, UKS3 7HF.
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45
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Zheng HJ, Chen WB, Wu ZJ, Deng JG, Lin WQ, Yuan WC, Zhang XM. Highly Enantioselective Synthesis of β-Amino Acid Derivatives by the Lewis Base Catalyzed Hydrosilylation of β-Enamino Esters. Chemistry 2008; 14:9864-7. [PMID: 18830976 DOI: 10.1002/chem.200801582] [Citation(s) in RCA: 85] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Hong-Jie Zheng
- Key Laboratory for Asymmetric Synthesis and Chiraltechnology of Sichuan Province, Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
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46
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Malkov AV, Stoncius S, Vranková K, Arndt M, Kocovský P. Dynamic Kinetic Resolution in the Asymmetric Synthesis of β-Amino Acids by Organocatalytic Reduction of Enamines with Trichlorosilane. Chemistry 2008; 14:8082-5. [PMID: 18666274 DOI: 10.1002/chem.200801244] [Citation(s) in RCA: 82] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Andrei V Malkov
- Department of Chemistry, WestChem, University of Glasgow, Glasgow G12 8QQ, UK.
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47
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Wang C, Wu X, Zhou L, Sun J. A Highly Enantioselective Organocatalytic Method for Reduction of AromaticN-Alkyl Ketimines. Chemistry 2008; 14:8789-8792. [PMID: 18752235 DOI: 10.1002/chem.200801479] [Citation(s) in RCA: 73] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Chao Wang
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 (China), Fax: (+86) 28-85222753
| | - Xinjun Wu
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 (China), Fax: (+86) 28-85222753
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, 610041 (China)
| | - Li Zhou
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 (China), Fax: (+86) 28-85222753
| | - Jian Sun
- Natural Products Research Center, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu, 610041 (China), Fax: (+86) 28-85222753
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48
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Stodulski M, Mlynarski J. Synthesis of N-alkyl-N-methyl amino acids. Scope and limitations of base-induced N-alkylation of Cbz-amino acids. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.03.025] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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49
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Malkov AV, Figlus M, Kočovský P. Polymer-Supported Organocatalysts: Asymmetric Reduction of Imines with Trichlorosilane Catalyzed by an Amino Acid-Derived Formamide Anchored to a Polymer. J Org Chem 2008; 73:3985-95. [DOI: 10.1021/jo800094q] [Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrei V. Malkov
- Department of Chemistry, WestChem, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Marek Figlus
- Department of Chemistry, WestChem, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
| | - Pavel Kočovský
- Department of Chemistry, WestChem, Joseph Black Building, University of Glasgow, Glasgow G12 8QQ, Scotland, U.K
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50
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Malkov AV, Stewart-Liddon AJ, Teplý F, Kobr L, Muir KW, Haigh D, Kočovský P. New pinene-derived pyridines as bidentate chiral ligands. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.02.045] [Citation(s) in RCA: 36] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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