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Singh SK, Mishra N, Kumar S, Jaiswal MK, Tiwari VK. Growing Impact of Carbohydrate‐Based Organocatalysts. ChemistrySelect 2022. [DOI: 10.1002/slct.202201314] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Sumit K. Singh
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Nidhi Mishra
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Sunil Kumar
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Manoj K. Jaiswal
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
| | - Vinod K. Tiwari
- Department of Chemistry Institute of Science Banaras Hindu University Varanasi 221005 INDIA
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2
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Orbán I, Varga B, Bagi P, Holczbauer T, Rapi Z. Enantioselective Cyclopropanation of 2‐Cyano‐3‐arylacrylates Using Carbohydrate‐based Crown Ethers. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- István Orbán
- Budapest University of Technology and Economics: Budapesti Muszaki es Gazdasagtudomanyi Egyetem Department of Organic Chemistry and Technology HUNGARY
| | - Bertalan Varga
- Budapest University of Technology and Economics: Budapesti Muszaki es Gazdasagtudomanyi Egyetem Department of Organic Chemistry and Technology HUNGARY
| | - Péter Bagi
- Budapest University of Technology and Economics: Budapesti Muszaki es Gazdasagtudomanyi Egyetem Department of Organic Chemistry and Technology HUNGARY
| | - Tamás Holczbauer
- Eötvös Loránd Research Network Research Centre for Natural Sciences Chemical Crystallography Research Laboratory and Institute of Organic Chemistry HUNGARY
| | - Zsolt Rapi
- Budapest University of Technology and Economics: Budapesti Muszaki es Gazdasagtudomanyi Egyetem Department of Organic Chemistry and Technology Műegyetem rkp. 3. 1111 Budapest HUNGARY
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3
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Al‐Rifai NM, Mubarak MS. α‐Substituted Chalcones: A Key Review. ChemistrySelect 2021. [DOI: 10.1002/slct.202103325] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Nafisah M. Al‐Rifai
- Pharmaceutical and chemical engineering department School of Medical Sciences German-Jordanian University, P.O. Box 35247 Amman 111800 Jordan
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Wojaczyńska E, Steppeler F, Iwan D, Scherrmann MC, Marra A. Synthesis and Applications of Carbohydrate-Based Organocatalysts. Molecules 2021; 26:7291. [PMID: 34885873 PMCID: PMC8659088 DOI: 10.3390/molecules26237291] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2021] [Revised: 11/22/2021] [Accepted: 11/24/2021] [Indexed: 12/22/2022] Open
Abstract
Organocatalysis is a very useful tool for the asymmetric synthesis of biologically or pharmacologically active compounds because it avoids the use of noxious metals, which are difficult to eliminate from the target products. Moreover, in many cases, the organocatalysed reactions can be performed in benign solvents and do not require anhydrous conditions. It is well-known that most of the above-mentioned reactions are promoted by a simple aminoacid, l-proline, or, to a lesser extent, by the more complex cinchona alkaloids. However, during the past three decades, other enantiopure natural compounds, the carbohydrates, have been employed as organocatalysts. In the present exhaustive review, the detailed preparation of all the sugar-based organocatalysts as well as their catalytic properties are described.
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Affiliation(s)
- Elżbieta Wojaczyńska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Franz Steppeler
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Dominika Iwan
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland
| | - Marie-Christine Scherrmann
- Institut de Chimie Moléculaire et des Matériaux d'Orsay (ICMMO), Université Paris-Saclay, Bâtiment 420, 91405 Orsay, France
| | - Alberto Marra
- Institut des Biomolécules Max Mousseron (IBMM-UMR 5247), Université de Montpellier, Pôle Chimie Balard Recherche, 1919 Route de Mende, 34293 Montpellier, France
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5
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Zhang Z, Shao Y, Tang J, Jiang J, Wang L, Li S. Supramolecular asymmetric catalysis mediated by crown ethers and related recognition systems. GREEN SYNTHESIS AND CATALYSIS 2021. [DOI: 10.1016/j.gresc.2021.03.007] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022] Open
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Abstract
Carbohydrate-based crown ethers represent a special group of chiral phase transfer catalysts. Several derivatives of these macrocycles have been synthesized in our research group. Among these compounds, monoaza-15-crown-5 lariat ethers proved to be effective phase transfer and enantioselective catalysts in certain reactions. Those chiral azacrown ethers incorporating various carbohydrate moieties in the macrocyclic structure are reviewed, which generated asymmetric induction in reactions, such as Michael addition, epoxidation of enones, Darzens condensation and Michael-initiated ring-closure (MIRC) reaction. Effects on the catalytic activity of the structural changes are the focus.
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Abstract
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Many catalysts were tested in asymmetric Michael additions in order to synthesize
enantioenriched products. One of the most common reaction types among the Michael
reactions is the conjugated addition of malonates to enones making it possible to investigate
the structure–activity relationship of the catalysts. The most commonly used Michael
acceptors are chalcone, substituted chalcones, chalcone derivatives, cyclic enones,
while typical donors may be dimethyl, diethyl, dipropyl, diisopropyl, dibutyl, di-tert-butyl
and dibenzyl malonates. This review summarizes the most important enantioselective
catalysts applied in these types of reactions.
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Affiliation(s)
- Péter Bakó
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, 1521 Budapest, Hungary
| | - Tamás Nemcsok
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, 1521 Budapest, Hungary
| | - Zsolt Rapi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, 1521 Budapest, Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, PO Box 91, 1521 Budapest, Hungary
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8
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Nemcsok T, Rapi Z, Bagi P, Oláh A, Keglevich G, Bakó P. The Synthesis of Hydrobenzoin-Based Monoaza Crown Ethers and Their Application as Recyclable Enantioselective Catalysts. Catal Letters 2020. [DOI: 10.1007/s10562-019-03013-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
Abstract
Abstract
New recyclable monoaza-15-crown ethers have been synthesized starting from (R,R)-(+)- and (S,S)-(−)-hydrobenzoin. These macrocycles proved to be efficient and reusable phase transfer catalysts in a few asymmetric reactions under mild conditions. The asymmetric epoxidation of trans-chalcone took place with up to 81% ee, while using other chalcone derivatives, the products were formed with 68–88% ee. The hydrobenzoin-based lariat ethers were also tested in the cyclopropanation of a few electron deficient olefins using diethyl bromomalonate to afford the product with good enantioselectivities (54–75% ee). The catalysts were recovered by salt formation, followed by extraction, and were reused without the loss of the activity and effect on the enantioselectivity.
Graphic Abstract
The synthesis of hydrobenzoin-based monaza crown ethers and their application as recyclable enantioselective catalysts.
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9
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Enantioselective cyclopropanation of conjugated cyanosulfones using carbohydrate-based crown ether catalysts. Tetrahedron 2020. [DOI: 10.1016/j.tet.2020.130965] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Nemcsok T, Rapi Z, Bagi P, Keglevich G, Bakó P. Synthesis of xylal‐ and arabinal‐based crown ethers and their application as asymmetric phase transfer catalysts. Chirality 2019; 32:107-119. [DOI: 10.1002/chir.23149] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2019] [Revised: 08/28/2019] [Accepted: 10/08/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Tamás Nemcsok
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - Zsolt Rapi
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - Péter Bagi
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - György Keglevich
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
| | - Péter Bakó
- Department of Organic Chemistry and TechnologyBudapest University of Technology and Economics Budapest Hungary
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Nemcsok T, Rapi Z, Bagi P, Bakó P. Synthesis and application of novel carbohydrate-based ammonium and triazolium salts. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1625403] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
Affiliation(s)
- Tamás Nemcsok
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Zsolt Rapi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Péter Bagi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Péter Bakó
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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12
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Rapi Z, Nemcsok T, Bagi P, Keglevich G, Bakó P. Synthesis of chiral crown ethers derived from d-galactose and their application in enantioselective reactions. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.06.020] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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13
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Rapi Z, Nemcsok T, Grün A, Pálvölgyi Á, Samu G, Hessz D, Kubinyi M, Kállay M, Keglevich G, Bakó P. Asymmetric cyclopropanation reactions catalyzed by carbohydrate-based crown ethers. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.04.087] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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Tomilov YV, Menchikov LG, Novikov RA, Ivanova OA, Trushkov IV. Methods for the synthesis of donor-acceptor cyclopropanes. RUSSIAN CHEMICAL REVIEWS 2018. [DOI: 10.1070/rcr4787] [Citation(s) in RCA: 66] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Nemcsok T, Rapi Z, Keglevich G, Grün A, Bakó P. Synthesis of d-mannitol-based crown ethers and their application as catalyst in asymmetric phase transfer reactions. Chirality 2017; 30:407-419. [PMID: 29283193 DOI: 10.1002/chir.22800] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2017] [Revised: 11/10/2017] [Accepted: 11/22/2017] [Indexed: 11/06/2022]
Abstract
A few new d-mannitol-based monoaza-15-crown-5 type chiral lariat ethers and 18-crown-6 type macrocycles were synthesized. These crown compounds were used as phase transfer catalysts in asymmetric Michael addititons and in a Darzens condensation under mild conditions to afford the corresponding products in a few cases in good to excellent enantioselectivities. In the Michael addition of diethyl acetoxymalonate to trans-chalcone, in the addition of diethyl acetamidomalonate to ß-nitrostyrene, in the reaction of diethyl bromomalonate with benzylidene malononitriles, in the cyclopropanation reaction of diethyl bromomalonate and 2-benzylidene-1,3-indandione, and in the Darzens condensation of α-chloroacetophenone with benzaldehyde, maximum enantioselectivities of 39%, 65%, 99%, 56%, and 62%, respectively, were obtained in the presence of the d-mannitol-based macrocycles as the catalysts.
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Affiliation(s)
- Tamás Nemcsok
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Zsolt Rapi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Alajos Grün
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Péter Bakó
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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Schörgenhumer J, Tiffner M, Waser M. Chiral phase-transfer catalysis in the asymmetric α-heterofunctionalization of prochiral nucleophiles. Beilstein J Org Chem 2017; 13:1753-1769. [PMID: 28904619 PMCID: PMC5588627 DOI: 10.3762/bjoc.13.170] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2017] [Accepted: 08/10/2017] [Indexed: 01/10/2023] Open
Abstract
Chiral phase-transfer catalysis is one of the major catalytic principles in asymmetric catalysis. A broad variety of different catalysts and their use for challenging applications have been reported over the last decades. Besides asymmetric C–C bond forming reactions the use of chiral phase-transfer catalysts for enantioselective α-heterofunctionalization reactions of prochiral nucleophiles became one of the most important field of application of this catalytic principle. Based on several highly spectacular recent reports, we thus wish to discuss some of the most important achievements in this field within the context of this review.
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Affiliation(s)
- Johannes Schörgenhumer
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Maximilian Tiffner
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
| | - Mario Waser
- Institute of Organic Chemistry, Johannes Kepler University Linz, Altenbergerstrasse 69, 4040 Linz, Austria
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17
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Rapi Z, Nemcsok T, Pálvölgyi Á, Keglevich G, Grün A, Bakó P. Synthesis of l-threitol-based crown ethers and their application as enantioselective phase transfer catalyst in Michael additions. Chirality 2017; 29:257-272. [PMID: 28429401 DOI: 10.1002/chir.22678] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2016] [Revised: 12/05/2016] [Accepted: 12/15/2016] [Indexed: 12/11/2022]
Abstract
A few new l-threitol-based lariat ethers incorporating a monoaza-15-crown-5 unit were synthesized starting from diethyl l-tartrate. These macrocycles were used as phase transfer catalysts in asymmetric Michael addition reactions under mild conditions to afford the adducts in a few cases in good to excellent enantioselectivities. The addition of 2-nitropropane to trans-chalcone, and the reaction of diethyl acetamidomalonate with β-nitrostyrene resulted in the chiral Michael adducts in good enantioselectivities (90% and 95%, respectively). The substituents of chalcone had a significant impact on the yield and enantioselectivity in the reaction of diethyl acetoxymalonate. The highest enantiomeric excess (ee) values (99% ee) were measured in the case of 4-chloro- and 4-methoxychalcone. The phase transfer catalyzed cyclopropanation reaction of chalcone and benzylidene-malononitriles using diethyl bromomalonate as the nucleophile (MIRC reaction) was also developed. The corresponding chiral cyclopropane diesters were obtained in moderate to good (up to 99%) enantioselectivities in the presence of the threitol-based crown ethers.
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Affiliation(s)
- Zsolt Rapi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Tamás Nemcsok
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Ádám Pálvölgyi
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - György Keglevich
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Alajos Grün
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
| | - Péter Bakó
- Department of Organic Chemistry and Technology, Budapest University of Technology and Economics, Budapest, Hungary
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Pham ST, Rapi Z, Bakó P, Petneházy I, Stirling A, Jászay Z. Enantioselective synthesis of substituted α-aminophosphonates catalysed by d-glucose-based crown ethers: pursuit of the origin of stereoselectivity. NEW J CHEM 2017. [DOI: 10.1039/c7nj03345a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Tuning the electronic properties of the catalyst can control the enantioselectivity of d-glucose-based crown ethers by a simple mechanism.
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Affiliation(s)
- Son Truong Pham
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- PO Box 91
- Budapest 1521
- Hungary
| | - Zsolt Rapi
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- PO Box 91
- Budapest 1521
- Hungary
| | - Péter Bakó
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- PO Box 91
- Budapest 1521
- Hungary
| | - Imre Petneházy
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- PO Box 91
- Budapest 1521
- Hungary
| | - András Stirling
- Institute of Organic Chemistry
- Research Centre for Natural Sciences
- Hungarian Academy of Sciences
- Budapest
- Hungary
| | - Zsuzsa Jászay
- Department of Organic Chemistry and Technology
- Budapest University of Technology and Economics
- PO Box 91
- Budapest 1521
- Hungary
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