1
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Menuey EM, Zhou J, Tian S, Brenner RE, Ren Z, Hua DH, Kilway KV, Moteki SA. Chirality-driven self-assembly: application toward renewable/exchangeable resin-immobilized catalysts. Org Biomol Chem 2022; 20:4314-4319. [PMID: 35583170 DOI: 10.1039/d2ob00439a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Resin-immobilized catalysts were prepared through chirality-driven self-assembly. The method allows the resin-immobilized catalyst to be regenerated under mild conditions and in situ catalyst exchange to be carried out quantitatively. The uniqueness of the methodology was demonstrated by the preparation of a catalyst for TEMPO oxidation as well as a two-step sequential TEMPO oxidation/aldol condensation sequence enabled by facile catalyst exchange.
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Affiliation(s)
- Elizabeth M Menuey
- Department of Chemistry, University of Missouri Kansas City, 5100 Rockhill Road, Kansas City, Missouri, 64110-2499, USA.
| | - John Zhou
- Department of Chemistry, University of Missouri Kansas City, 5100 Rockhill Road, Kansas City, Missouri, 64110-2499, USA.
| | - Shuyuan Tian
- Department of Chemistry, University of Missouri Kansas City, 5100 Rockhill Road, Kansas City, Missouri, 64110-2499, USA.
| | - Reid E Brenner
- Department of Chemistry, University of Missouri Kansas City, 5100 Rockhill Road, Kansas City, Missouri, 64110-2499, USA.
| | - Zhaoyang Ren
- Department of Chemistry, Kansas State University, 1212 Mid-Campus Dr., Manhattan, KS 66506-0401, USA
| | - Duy H Hua
- Department of Chemistry, Kansas State University, 1212 Mid-Campus Dr., Manhattan, KS 66506-0401, USA
| | - Kathleen V Kilway
- Department of Chemistry, University of Missouri Kansas City, 5100 Rockhill Road, Kansas City, Missouri, 64110-2499, USA.
| | - Shin A Moteki
- Department of Chemistry, University of Missouri Kansas City, 5100 Rockhill Road, Kansas City, Missouri, 64110-2499, USA.
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2
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Chen H, Tang J, Liu T, Yu LF, Xing D, Yang F. Enantioselective synthesis of chiral 3-alkyl-3-nitro-4-chromanones via chiral thiourea-catalysed intramolecular Michael-type cyclization. Org Biomol Chem 2021; 19:7403-7408. [PMID: 34387633 DOI: 10.1039/d1ob01296g] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Herein we report an enantioselective method for the rapid construction of chiral 3-nitro-4-chromanones via a chiral thiourea-catalyzed intramolecular Michael-type cyclization reaction. With this method, a series of 3,3-disubstituted-3-nitro-4-chromanones bearing contiguous C2/C3 stereocenters were obtained with high diastereoselectivities and good to excellent enantioselectivities. In vitro biological evaluations indicated that the chiral amide derivative of the product showed more potent antitumor activities than both the racemic and the corresponding enantiomers, showcasing the high influence of enantioselective methodology development toward medicinal studies.
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Affiliation(s)
- Huiqing Chen
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Rd., Shanghai, 200062, China.
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3
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Krištofíková D, Modrocká V, Mečiarová M, Šebesta R. Green Asymmetric Organocatalysis. CHEMSUSCHEM 2020; 13:2828-2858. [PMID: 32141177 DOI: 10.1002/cssc.202000137] [Citation(s) in RCA: 70] [Impact Index Per Article: 17.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/15/2020] [Revised: 03/05/2020] [Indexed: 06/10/2023]
Abstract
Asymmetric organocatalysis is becoming one of the main tools for the synthesis of chiral compounds that are needed as medicines, crop protection agents, and other bioactive molecules. It can be effectively combined with various green chemistry methodologies. Intensification techniques, such as ball milling, flow, high pressure, or light, bring not only higher yields, faster reactions, and easier product isolation, but also new reactivities. More sustainable reaction media, such as ionic liquids, deep eutectic solvents, green solvent alternatives, and water, also considerably enhance the sustainability profile of many organocatalytic reactions.
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Affiliation(s)
- Dominika Krištofíková
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Viktória Modrocká
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Mária Mečiarová
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
| | - Radovan Šebesta
- Department of Organic Chemistry, Faculty of Natural Sciences, Comenius University in Bratislava, Mlynska dolina, Ilkovicova 6, 842 15, Bratislava, Slovakia
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4
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Baek D, Ryu H, Ryu JY, Lee J, Stoltz BM, Hong S. Catalytic enantioselective synthesis of tetrasubstituted chromanones via palladium-catalyzed asymmetric conjugate arylation using chiral pyridine-dihydroisoquinoline ligands. Chem Sci 2020; 11:4602-4607. [PMID: 33133484 PMCID: PMC7574023 DOI: 10.1039/d0sc00412j] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2020] [Accepted: 04/07/2020] [Indexed: 11/21/2022] Open
Abstract
Highly enantioselective conjugate addition reactions of arylboronic acids to 2-substituted chromones catalyzed by palladium complexes with new chiral Pyridine-Dihydroisoquinoline (PyDHIQ) ligands have been developed. These reactions provide highly enantioselective access to chromanones containing tetrasubstituted stereocenters. Various arylboronic acids and 2-substituted chromones can be used in the catalytic reaction to afford the chiral tetrasubstituted chromanones in good yields and excellent enantioselectivities (25 examples, up to 98% yields, up to 99% ee).
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Affiliation(s)
- Doohyun Baek
- Department of Chemistry , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro, Buk-gu , Gwangju 61005 , Republic of Korea .
| | - Huijeong Ryu
- Department of Chemistry , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro, Buk-gu , Gwangju 61005 , Republic of Korea .
| | - Ji Yeon Ryu
- Department of Chemistry , Chonnam National University , 77 Yongbong-ro, Buk-gu , Gwangju 61186 , Republic of Korea
| | - Junseong Lee
- Department of Chemistry , Chonnam National University , 77 Yongbong-ro, Buk-gu , Gwangju 61186 , Republic of Korea
| | - Brian M Stoltz
- The Warren and Katharine Schlinger Laboratory of Chemistry and Chemical Engineering , Division of Chemistry and Chemical Engineering , California Institute of Technology , Pasadena , CA 91125 , USA .
| | - Sukwon Hong
- Department of Chemistry , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro, Buk-gu , Gwangju 61005 , Republic of Korea .
- School of Materials Science and Engineering , Gwangju Institute of Science and Technology , 123 Cheomdan-gwagiro, Buk-gu , Gwangju 61005 , Republic of Korea
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5
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Riss B, Garreau M, Fricero P, Podsiadly P, Berton N, Buchter S. Total synthesis of TMS- ent -bisabolangelone. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.04.042] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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6
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Bonacorso HG, Ketzer A, Garcia FD, Rosa WC, Calheiro TP, Feitosa SC, Dal Forno GM, Zanatta N, Martins MA, Frizzo CP. Efficient approach for regioselective synthesis of new trifluoromethyl-substituted spirotetracyclic isoxazolines and isoxazoles. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.02.004] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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7
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Kucherenko AS, Kostenko AA, Gerasimchuk VV, Zlotin SG. Stereospecific diaza-Cope rearrangement as an efficient tool for the synthesis of DPEDA pyridine analogs and related C2-symmetric organocatalysts. Org Biomol Chem 2017; 15:7028-7033. [DOI: 10.1039/c7ob01852e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantiomerically pure trans-1,2-di-(pyridinyl)ethylene-1,2-diamines were synthesized via a stereospecific diaza-Cope rearrangement and converted to prolinamide-based recyclable organocatalysts.
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Affiliation(s)
- A. S. Kucherenko
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | - A. A. Kostenko
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | - V. V. Gerasimchuk
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
| | - S. G. Zlotin
- N. D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- Moscow
- Russia
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8
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Ueda Y. Final-stage Site-selective Acylation for the Total Synthesis of Natural Glycosides. YAKUGAKU ZASSHI 2016; 136:1631-1639. [PMID: 27904097 DOI: 10.1248/yakushi.16-00186] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The first total syntheses of multifidosides A-C are reported. The prominent feature is an unconventional retrosynthesis based on organocatalytic site-selective acylation of unprotected glycosides at the final stage of synthesis. A notable advantage of this strategy is that it avoids the risks of undesired side reactions during the removal of the protecting groups at the final stage of total synthesis. The proposed synthetic strategy has another advantage in terms of efficient late-stage derivatization of natural products. Due to the predictability and reliability of the catalytic site-selective introduction of various functionalized acyl groups, the present synthetic strategy could provide a general synthetic route to 4-O-acylglycosides, such as phenylethanoid glycosides and ellagitannins, which are of biological interest.
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9
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Ionic liquid supported 4-HO-Pro-Val derived organocatalysts for asymmetric aldol reactions in the presence of water. MENDELEEV COMMUNICATIONS 2016. [DOI: 10.1016/j.mencom.2016.09.007] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
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10
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Lisnyak VG, Kucherenko AS, Valeev EF, Zlotin SG. (1,2-Diaminoethane-1,2-diyl)bis(N-methylpyridinium) Salts as a Prospective Platform for Designing Recyclable Prolinamide-Based Organocatalysts. J Org Chem 2015; 80:9570-7. [DOI: 10.1021/acs.joc.5b01555] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Vladislav G. Lisnyak
- N.
D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991 Moscow, Russia
- Higher
Chemical College of the Russian Academy of Sciences, D. I. Mendeleev University of Chemical Technology, 9 Miusskaya Square, 125047 Moscow, Russia
| | - Alexander S. Kucherenko
- N.
D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991 Moscow, Russia
| | - Edward F. Valeev
- Department
of Chemistry, Virginia Tech, Blacksburg, Virginia 24061, United States
| | - Sergei G. Zlotin
- N.
D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, 47 Leninsky Prospect, 119991 Moscow, Russia
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11
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Ueda Y, Furuta T, Kawabata T. Final-Stage Site-Selective Acylation for the Total Syntheses of Multifidosides A-C. Angew Chem Int Ed Engl 2015. [DOI: 10.1002/ange.201504729] [Citation(s) in RCA: 9] [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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12
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Ueda Y, Furuta T, Kawabata T. Final-stage site-selective acylation for the total syntheses of multifidosides A-C. Angew Chem Int Ed Engl 2015; 54:11966-70. [PMID: 26384855 DOI: 10.1002/anie.201504729] [Citation(s) in RCA: 40] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2015] [Indexed: 11/11/2022]
Abstract
The first total syntheses of multifidosides A-C have been achieved. The synthetic strategy is characterized by catalytic site-selective acylation of unprotected glycoside precursors in the final stage of the synthesis. High functional-group tolerance of the site-selective acylation, promoted by an organocatalyst, enabled the conventionally difficult molecular transformation in a predictable and reliable manner. An advantage of this strategy is to avoid the risks of undesired side reactions during the removal of the protecting groups at the final stage of the total synthesis.
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Affiliation(s)
- Yoshihiro Ueda
- Institute for Chemical Research, Kyoto University, Gokasho, Uji city, Kyoto 611-0011 (Japan)
| | - Takumi Furuta
- Institute for Chemical Research, Kyoto University, Gokasho, Uji city, Kyoto 611-0011 (Japan)
| | - Takeo Kawabata
- Institute for Chemical Research, Kyoto University, Gokasho, Uji city, Kyoto 611-0011 (Japan).
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13
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Quintard A, Rodriguez J. Synergistic Cu–amine catalysis for the enantioselective synthesis of chiral cyclohexenones. Chem Commun (Camb) 2015; 51:9523-6. [DOI: 10.1039/c5cc02987b] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An unprecedented utilization of 1,3-acetonedicarboxylic acid as a 1,3-bis-pro-nucleophile and a reactive acetone surrogate in enantioselective catalysis has been reported.
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Affiliation(s)
- A. Quintard
- Aix Marseille Université
- Centrale Marseille
- CNRS
- Marseille
- France
| | - J. Rodriguez
- Aix Marseille Université
- Centrale Marseille
- CNRS
- Marseille
- France
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14
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Chiral diphenylperhydroindolinol silyl ether catalyzed domino oxa-Michael–aldol condensations for the asymmetric synthesis of benzopyrans. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.02.016] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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15
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Yang X, Wang J, Li P. Recent progress on asymmetric organocatalytic construction of chiral cyclohexenone skeletons. Org Biomol Chem 2014; 12:2499-513. [DOI: 10.1039/c3ob42293c] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
Chiral cyclohex-2-enones are important intermediates in synthetic chemistry as well as in the life science industries. In this focus review, recent advances in the organocatalytic asymmetric synthesis of chiral cyclohex-2-enone skeletons are summarized. The reaction mechanisms are also briefly discussed.
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Affiliation(s)
- Xin Yang
- Department of Chemistry
- South University of Science and Technology of China
- Shenzhen, P. R. China
| | - Jun Wang
- Department of Chemistry
- South University of Science and Technology of China
- Shenzhen, P. R. China
| | - Pengfei Li
- Department of Chemistry
- South University of Science and Technology of China
- Shenzhen, P. R. China
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16
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Heravi MM, Hajiabbasi P. Recent advances in C-heteroatom bond forming by asymmetric Michael addition. Mol Divers 2013; 18:411-39. [DOI: 10.1007/s11030-013-9494-2] [Citation(s) in RCA: 43] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2013] [Accepted: 12/02/2013] [Indexed: 10/25/2022]
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17
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Nakamura S. Catalytic enantioselective decarboxylative reactions using organocatalysts. Org Biomol Chem 2013; 12:394-405. [PMID: 24270735 DOI: 10.1039/c3ob42161a] [Citation(s) in RCA: 134] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Catalytic decarboxylative reactions are attractive as biomimetic reactions and environmentally friendly reaction processes. In this review, the origin and recent development of organocatalytic enantioselective decarboxylative reactions of malonic acid half oxy- or thioesters, or β-ketoacids are summarized.
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Affiliation(s)
- Shuichi Nakamura
- Department of Frontier Materials, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan.
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18
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Saidalimu I, Fang X, He XP, Liang J, Yang X, Wu F. Highly Enantioselective Construction of 3-Hydroxy Oxindoles through a Decarboxylative Aldol Addition of Trifluoromethyl α-Fluorinatedgem-Diols toN-Benzyl Isatins. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301443] [Citation(s) in RCA: 32] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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19
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Saidalimu I, Fang X, He XP, Liang J, Yang X, Wu F. Highly enantioselective construction of 3-hydroxy oxindoles through a decarboxylative aldol addition of trifluoromethyl α-fluorinated gem-diols to N-benzyl isatins. Angew Chem Int Ed Engl 2013; 52:5566-70. [PMID: 23589222 DOI: 10.1002/anie.201301443] [Citation(s) in RCA: 95] [Impact Index Per Article: 8.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2013] [Indexed: 11/05/2022]
Affiliation(s)
- Ibrayim Saidalimu
- Key Laboratory for Advanced Material and Institute of Fine Chemicals, School of Chemistry and Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, P.R. China
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20
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Zhong F, Yao W, Dou X, Lu Y. Enantioselective Construction of 3-Hydroxy Oxindoles via Decarboxylative Addition of β-Ketoacids to Isatins. Org Lett 2012; 14:4018-21. [DOI: 10.1021/ol301855w] [Citation(s) in RCA: 95] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Fangrui Zhong
- Department of Chemistry & Medicinal Chemistry Program, Life Sciences Institute, National University of Singapore, 3 Science Drive 3, Republic of Singapore, 117543
| | - Weijun Yao
- Department of Chemistry & Medicinal Chemistry Program, Life Sciences Institute, National University of Singapore, 3 Science Drive 3, Republic of Singapore, 117543
| | - Xiaowei Dou
- Department of Chemistry & Medicinal Chemistry Program, Life Sciences Institute, National University of Singapore, 3 Science Drive 3, Republic of Singapore, 117543
| | - Yixin Lu
- Department of Chemistry & Medicinal Chemistry Program, Life Sciences Institute, National University of Singapore, 3 Science Drive 3, Republic of Singapore, 117543
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Abstract
Products of a novel iminium-catalyzed oxa-Michael addition undergo a kinetic resolution by a subsequent enamine-catalyzed intermolecular reaction. This is a rare example of kinetic resolution by enamine catalysis and the first organocascade kinetic resolution. This resolution produces enantioenriched 2,6-cis-tetrahydropyrans and, notably, cascade products with absolute and relative configurations normally not observed using this diphenyl prolinol silyl ether. This resolution thus provides new insight into asymmetric induction in reactions employing this catalyst.
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Affiliation(s)
- Patrick G McGarraugh
- Department of Chemistry, Brooklyn College and the City University of New York, 2900 Bedford Avenue, Brooklyn, New York 11210, USA
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22
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Cuthbertson JD, Godfrey AA, Taylor RJK. The Preparation of (−)-Grandisine B from (+)-Grandisine D; A Biomimetic Total Synthesis or Formation of an Isolation Artefact? Org Lett 2011; 13:3976-9. [DOI: 10.1021/ol2014939] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- James D. Cuthbertson
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., and AstraZeneca, Chemical Sciences, Pharmaceutical Development, Silk Road Business Park, Charter Way, Macclesfield, Cheshire SK10 2NA, U.K
| | - Andrew A. Godfrey
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., and AstraZeneca, Chemical Sciences, Pharmaceutical Development, Silk Road Business Park, Charter Way, Macclesfield, Cheshire SK10 2NA, U.K
| | - Richard J. K. Taylor
- Department of Chemistry, University of York, Heslington, York YO10 5DD, U.K., and AstraZeneca, Chemical Sciences, Pharmaceutical Development, Silk Road Business Park, Charter Way, Macclesfield, Cheshire SK10 2NA, U.K
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23
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Arakawa Y, Wiesner M, Wennemers H. Efficient Recovery and Reuse of an Immobilized Peptidic Organocatalyst. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100118] [Citation(s) in RCA: 78] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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24
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Funabiki K, Itoh Y, Kubota Y, Matsui M. Organocatalytic Asymmetric Direct Aldol Reactions of Trifluoroacetaldehyde Ethyl Hemiacetal with Aromatic Methyl Ketones. J Org Chem 2011; 76:3545-50. [DOI: 10.1021/jo200020z] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kazumasa Funabiki
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yuya Itoh
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Yasuhiro Kubota
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
| | - Masaki Matsui
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan
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25
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Quintard A, Alexakis A, Mazet C. Access to High Levels of Molecular Complexity by One-Pot Iridium/Enamine Asymmetric Catalysis. Angew Chem Int Ed Engl 2011. [DOI: 10.1002/ange.201007001] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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26
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Quintard A, Alexakis A, Mazet C. Access to high levels of molecular complexity by one-pot iridium/enamine asymmetric catalysis. Angew Chem Int Ed Engl 2011; 50:2354-8. [PMID: 21351353 DOI: 10.1002/anie.201007001] [Citation(s) in RCA: 110] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2010] [Revised: 12/12/2010] [Indexed: 11/06/2022]
Affiliation(s)
- Adrien Quintard
- Département de chimie organique, Université de Genève, Quai Ernest Ansermet 30, 1211 Genève 4, Switzerland
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27
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Funabiki K, Matsunaga K, Gonda H, Yamamoto H, Arima T, Kubota Y, Matsui M. Reversal of diastereoselectivity in reactions of the trifluoroacetaldehyde ethyl hemiacetal with enamines and imines: metal-free, complementary anti- and syn-selective synthesis of 4,4,4-trifluoro-1-aryl-3-hydroxy-2-methyl-1-butanones. J Org Chem 2011; 76:285-8. [PMID: 21126099 DOI: 10.1021/jo101733j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A complete reversal of diastereoselectivity was observed for reactions of the trifluoroacetaldehyde ethyl hemiacetal with enamines and imines, derived from propiophenones, that produce 4,4,4-trifluoro-1-aryl-3-hydroxy-2-methyl-1-butanones. This process serves as the first reliable, metal-free, complementary anti- and syn-selective method to prepare 4,4,4-trifluoro-1-aryl-3-hydroxy-2-methyl-1-butanones.
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Affiliation(s)
- Kazumasa Funabiki
- Department of Materials Science and Technology, Faculty of Engineering, Gifu University, 1-1 Yanagido, Gifu 501-1193, Japan.
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28
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Liu TL, He ZL, Wang CJ. Highly efficient construction of spirocyclic chromanone–pyrrolidines via Cu(i)/TF–BiphamPhos-catalyzed asymmetric 1,3-dipolar cycloaddition. Chem Commun (Camb) 2011; 47:9600-2. [DOI: 10.1039/c1cc13554f] [Citation(s) in RCA: 72] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Butler JD, Conrad WE, Lodewyk MW, Fettinger JC, Tantillo DJ, Kurth MJ. Synthesis of substituted chromanones: an organocatalytic aldol/oxa-Michael reaction. Org Lett 2010; 12:3410-3. [PMID: 20617821 DOI: 10.1021/ol101221c] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A diastereoselective organocatalytic aldol/oxa-Michael reaction has been developed to efficiently deliver medicinally relevant 2,3-ring-substituted chromanones. Development of this synthetic strategy revealed an unexpected kinetic anti-Saytzeff elimination; an origin for the observed selectivity is suggested on the basis of the results of quantum chemical calculations. This unusual kinetic selectivity necessitated an isomerization protocol that in turn led to the discovery of an intriguing Pd-mediated isomerization/intramolecular Friedel-Crafts-type alkylation.
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Affiliation(s)
- Jeffrey D Butler
- Department of Chemistry, University of California, One Shields Avenue, Davis, California 95616, USA
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Ramharter J, Weinstabl H, Mulzer J. Synthesis of the Lycopodium Alkaloid (+)-Lycoflexine. J Am Chem Soc 2010; 132:14338-9. [DOI: 10.1021/ja107533m] [Citation(s) in RCA: 92] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jürgen Ramharter
- Institute of Organic Chemistry, University of Vienna, Waehringer Strasse 38, 1090 Vienna, Austria
| | - Harald Weinstabl
- Institute of Organic Chemistry, University of Vienna, Waehringer Strasse 38, 1090 Vienna, Austria
| | - Johann Mulzer
- Institute of Organic Chemistry, University of Vienna, Waehringer Strasse 38, 1090 Vienna, Austria
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Kristensen TE, Hansen T. Polymer‐Supported Chiral Organocatalysts: Synthetic Strategies for the Road Towards Affordable Polymeric Immobilization. European J Org Chem 2010. [DOI: 10.1002/ejoc.201000319] [Citation(s) in RCA: 203] [Impact Index Per Article: 14.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Tor E. Kristensen
- Department of Chemistry, University of Oslo, P. O. Box 1033 Blindern, 0315 Oslo, Norway, Fax: +47‐2285‐5441
| | - Tore Hansen
- Department of Chemistry, University of Oslo, P. O. Box 1033 Blindern, 0315 Oslo, Norway, Fax: +47‐2285‐5441
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Abstract
AbstractSulphonimide based organocatalyst was used to catalyze the aldol reaction in ionic liquid media. On the basis of yield and selectivity the ionic liquid mediated system was found superior in comparison with organic solvents. The added advantages of this ionic liquid mediated organocatalysis are easy recovery of product and the recyclability of the organocatalyst.
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Kristensen TE, Hansen FK, Hansen T. The SelectiveO-Acylation of Hydroxyproline as a Convenient Method for the Large-Scale Preparation of Novel Proline Polymers and Amphiphiles. European J Org Chem 2009. [DOI: 10.1002/ejoc.200800941] [Citation(s) in RCA: 47] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lei M, Xia S, Wang J, Ge Z, Cheng T, Li R. An efficient dipeptide-catalyzed direct asymmetric aldol reaction of equimolar reactants in solid media. Chirality 2009; 22:580-6. [DOI: 10.1002/chir.20783] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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