1
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Dyguda M, Przydacz A, Albrecht Ł. Dearomative, aminocatalytic formal normal-electron-demand aza-Diels-Alder cycloaddition in the synthesis of tetrahydrofuropyridines. Chem Commun (Camb) 2023; 59:12903-12906. [PMID: 37819685 DOI: 10.1039/d3cc03946c] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
In the manuscript the application of dearomative formal normal-electron-demand aza-Diels-Alder cycloaddition in the synthesis of tetrahydrofuropyridines is described. The developed approach utilizes aminocatalytic activation of 2-alkyl-3-furfurals that proceeds via formation of the dearomatized dienamine intermediate. Initially obtained cycloadducts have been subjected to subsequent transformations providing access to tetrahydrofuropyridines or functionalized cinnamates. The mechanism of the process has been confirmed by DFT calculations.
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Affiliation(s)
- Mateusz Dyguda
- Faculty of Chemistry, Institute of Organic Chemistry Lodz University of Technology Żeromskiego 114, 90-543 Lodz, Poland.
| | - Artur Przydacz
- Faculty of Chemistry, Institute of Organic Chemistry Lodz University of Technology Żeromskiego 114, 90-543 Lodz, Poland.
| | - Łukasz Albrecht
- Faculty of Chemistry, Institute of Organic Chemistry Lodz University of Technology Żeromskiego 114, 90-543 Lodz, Poland.
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2
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Pellissier H. TADDOL-derived phosphorus ligands in asymmetric catalysis. Coord Chem Rev 2023. [DOI: 10.1016/j.ccr.2023.215079] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/23/2023]
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3
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Wang KK, Jing J, Zhou WW, Wang C, Ye JW, Zhou R, Wang TT, Wang ZY, Chen R. Divergent Synthesis of Highly Substituted Tetrahydroquinolines and Cyclopentenes via Lewis Base Catalyzed Switchable [4 + 2] and [3 + 2] Annulations of MBH-Carbonates with Activated Olefins. J Org Chem 2023; 88:5982-5996. [PMID: 37079849 DOI: 10.1021/acs.joc.3c00331] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/22/2023]
Abstract
A highly selective and divergent synthesis which enabled access to various complex compounds is highly attractive in organic synthesis and medicinal chemistry. Herein, we developed an effective method for divergent synthesis of highly substituted tetrahydroquinolines via Lewis base catalyzed switchable annulations of Morita-Baylis-Hillman carbonates with activated olefins. The reaction displayed switchable [4 + 2] or [3 + 2] annulations via catalyst or substrate control, providing a diverse range of architectures which contained highly substituted tetrahydroquinolines or cyclopentenes with three contiguous stereocenters bearing a quaternary carbon center in high yields with excellent diastereoselectivities and regioselectivities. Furthermore, synthetic utility of this strategy was further highlighted by gram-scale experiments and simple transformations of the products.
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Affiliation(s)
- Kai-Kai Wang
- School of Pharmacy, Xinxiang University, Xinxiang, Henan 453000, P. R. China
| | - Jun Jing
- School of Pharmacy, Xinxiang University, Xinxiang, Henan 453000, P. R. China
| | - Wen-Wen Zhou
- School of Pharmacy, Xinxiang University, Xinxiang, Henan 453000, P. R. China
| | - Can Wang
- School of Pharmacy, Xinxiang University, Xinxiang, Henan 453000, P. R. China
| | - Jun-Wei Ye
- School of Pharmacy, Xinxiang University, Xinxiang, Henan 453000, P. R. China
| | - Ran Zhou
- School of Pharmacy, Xinxiang University, Xinxiang, Henan 453000, P. R. China
| | - Ting-Ting Wang
- School of Pharmacy, Xinxiang University, Xinxiang, Henan 453000, P. R. China
| | - Zhan-Yong Wang
- School of Pharmacy, Xinxiang University, Xinxiang, Henan 453000, P. R. China
| | - Rongxiang Chen
- School of Pharmacy, Xinxiang University, Xinxiang, Henan 453000, P. R. China
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4
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Sengupta S, Pabbaraja S, Mehta G. Domino Reactions through Recursive Anionic Cascades: The Advantageous Use of Nitronates. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200945] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
| | - Srihari Pabbaraja
- Department of Organic Synthesis and Process Chemistry CSIR-Indian Institute of Chemical Technology Hyderabad 500007 India
| | - Goverdhan Mehta
- School of Chemistry University of Hyderabad Hyderabad 500046 India
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5
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Bagherinejad A, Alizadeh A. A review of the synthetic strategies toward spirobarbiturate-fused 3- to 7-membered rings. Org Biomol Chem 2022; 20:7188-7215. [PMID: 36070341 DOI: 10.1039/d2ob01326f] [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
Spiro-connected hexahydropyrimidine-2,4,6-trione heterocyclic rings have received increasing attention from the viewpoint of biological activity and synthetic methods due to the importance of the rigid heterocyclic system and unique orientation of the functional substituents. Since 1900, numerous studies have exploited the synthesis of various spirobarbiturate-fused carbo- and heterocycles by applying different strategies. Due to the importance of barbiturate-based olefins as activated alkenes, these substrates have been utilized in many reactions. In addition, the nucleophilic addition of 1,3-disubstituted barbituric acid to different electrophiles has been applied to prepare highly functionalized spirobarbiturate scaffolds. This short review highlights various strategies for synthesizing spirobarbiturate-fused 3- to 7-membered carbo- and heterocyclic rings and some catalytic diastereoselective and enantioselective chemical reactions to access chiral compounds. The sections are divided by the incorporation of 3- to 7-membered heterocyclic or carbocyclic rings into a spirobarbiturate scaffold, and are presented in different subsections depending on the mechanistic details.
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Affiliation(s)
- Akram Bagherinejad
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
| | - Abdolali Alizadeh
- Department of Chemistry, Tarbiat Modares University, P.O. Box 14115-175, Tehran, Iran.
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6
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Tao LF, Zhang S, Huang F, Wang WT, Luo ZH, Qian L, Liao JY. Diastereo- and Enantioselective Silver-Catalyzed [3+3] Cycloaddition and Kinetic Resolution of Azomethine Imines with Activated Isocyanides. Angew Chem Int Ed Engl 2022; 61:e202202679. [PMID: 35289973 DOI: 10.1002/anie.202202679] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2022] [Indexed: 12/15/2022]
Abstract
In contrast to the well-established [3+2] cycloaddition reactions, the catalytic enantioselective [3+n] (n≥3) cycloaddition reaction of activated isocyanides for the preparation of six-membered or larger ring systems has remained underdeveloped. Herein, we report the first example of highly diastereo- and enantioselective [3+3] cycloaddition of activated isocyanides with azomethine imines. By employing silver catalysis, a wide range of biologically important bicyclic 1,2,4-triazines were obtained in high yields (up to 99 %) with good to excellent stereoselectivities (up to >20 : 1 dr, 99 % ee). In addition, the same catalytic system could be applied to both the late-stage functionalization of complex bioactive molecules and the kinetic resolution of racemic azomethine imines, further highlighting its versatility and synthetic utility.
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Affiliation(s)
- Ling-Fei Tao
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Sen Zhang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Fen Huang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Wen-Tao Wang
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Zhang-Hong Luo
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Linghui Qian
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China
| | - Jia-Yu Liao
- College of Pharmaceutical Sciences, and Hangzhou Institute of Innovative Medicine, Zhejiang University, Hangzhou, 310058, China.,Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University, Hangzhou, 310018, China
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7
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Łowicki D, Przybylski P. Cascade synthetic strategies opening access to medicinal-relevant aliphatic 3- and 4-membered N-heterocyclic scaffolds. Eur J Med Chem 2022; 238:114438. [PMID: 35567964 DOI: 10.1016/j.ejmech.2022.114438] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/11/2021] [Revised: 04/26/2022] [Accepted: 04/30/2022] [Indexed: 12/23/2022]
Abstract
Cascade reactions are often 'employed' by nature to construct structurally diverse nitrogen-containing heterocycles in a highly stereoselective fashion, i.e., secondary metabolites important for pharmacy. Nitrogen-containing heterocycles of three- and four-membered rings, as standalone and bicyclic compounds, inhibit different enzymes and are pharmacophores of approved drugs or drug candidates considered in many therapies, e.g. anticancer, antibacterial or antiviral. Domino transformations are in most cases in line with modern green chemistry concepts due to atom economy, one-pot procedures often without use the protective groups, time-saving and at markedly lower costs than multistep transformations. The tandem approaches can help to obtain novel N-heterocyclic scaffolds, functionalized according to structural requirements of the target in cells, taking into account the nature of functional group and stereochemistry. On the other hand cascade strategies allow to modify small N-heterocyclic rings in a systematic way, which is beneficial for structure-activity relationship (SAR) analyses. This review is focused on the biological relevance of the N-heterocyclic scaffolds with smaller 3- and 4-membered rings among approved drugs and leading structures of drug candidates. The cascade synthetic strategies offering N-heterocyclic scaffolds, at relatively good yields and high stereoselectivity, are discussed here. The review covers mainly years from 2015 to 2021.
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Affiliation(s)
- Daniel Łowicki
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Piotr Przybylski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland.
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8
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Tao L, Zhang S, Huang F, Wang W, Luo Z, Qian L, Liao J. Diastereo‐ and Enantioselective Silver‐Catalyzed [3+3] Cycloaddition and Kinetic Resolution of Azomethine Imines with Activated Isocyanides. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202202679] [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)
- Ling‐Fei Tao
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Sen Zhang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Fen Huang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Wen‐Tao Wang
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Zhang‐Hong Luo
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Linghui Qian
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
| | - Jia‐Yu Liao
- College of Pharmaceutical Sciences and Hangzhou Institute of Innovative Medicine Zhejiang University Hangzhou 310058 China
- Innovation Institute for Artificial Intelligence in Medicine of Zhejiang University Hangzhou 310018 China
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9
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Łowicki D, Przybylski P. Tandem construction of biological relevant aliphatic 5-membered N-heterocycles. Eur J Med Chem 2022; 235:114303. [PMID: 35344904 DOI: 10.1016/j.ejmech.2022.114303] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2021] [Revised: 03/14/2022] [Accepted: 03/15/2022] [Indexed: 12/20/2022]
Abstract
Nature often uses cascade reactions in a highly stereocontrolled manner for assembly structurally diverse nitrogen-containing heterocyclic scaffolds, i.e. secondary metabolites, important for medicinal chemistry and pharmacy. Five-membered nitrogen-containing heterocycles as standalone rings, as well as spiro and polycyclic systems are pharmacophores of drugs approved in various therapies, i.a. antibacterial or antiviral, antifungal, anticancer, antidiabetic, as they target many key enzymes. Furthermore, a large number of pyrrolidine derivatives are currently considered as drug candidates. Cascade transformations, also known as domino or tandem reactions, offer straightforward methods to build N-heterocyclic libraries of the great structural variety desired for drawing SAR conclusions. The tandem transformations are often atom economic and time-saving because they are performed as the one-pot, so no need for purification after each 'virtual' step and the limited necessity of protective groups are characteristic for these processes. Thus, the same results as in classical multistep synthesis can be achieved at markedly lower costs and shorter time, which is in line with modern green chemistry rules. Great advantage of cascade reactions is often reflected in their high regio- and stereoselectivities, enabling the preparing of the heterocyclic compound better fitted to the expected target in cells. This review reveals the biological relevance of N-heterocyclic scaffolds based on saturated 5-membered rings since we showed a number of examples of approved drugs together with the recent biologically attractive leading structures of drug candidates. Next, novel cascade synthetic procedures, taking into account the structure of the reactants and reaction mechanisms, enabling to obtain biological-relevant heterocyclic frameworks with good yields and relatively high stereoselectivity, were reviewed and compared. The review covers the advances of designing biological active N-heterocycles mainly from 2018 to 2021, whereas the synthetic part is focused on the last 7 years.
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Affiliation(s)
- Daniel Łowicki
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland
| | - Piotr Przybylski
- Faculty of Chemistry, Adam Mickiewicz University, Uniwersytetu Poznańskiego 8, 61-614, Poznan, Poland.
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10
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Pasuparthy SD, Maiti B. Enantioselective Organocatalytic Michael Addition Reactions Catalyzed by Proline/Prolinol/Supported Proline based Organocatalysts: An Overview. ChemistrySelect 2022. [DOI: 10.1002/slct.202104261] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Sai Deepak Pasuparthy
- Department of Chemistry School of Advanced Sciences Vellore Institute of Technology Vellore 632014 India
| | - Barnali Maiti
- Department of Chemistry School of Advanced Sciences Vellore Institute of Technology Vellore 632014 India
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11
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Chakroborty S, V. B. Unnamatla M, Panda P, C. Ramírez-Loṕez S, A. Garcia Eleno M, C. Yañez E, Strekowski L. Recent Progress on Synthesis of Spirochromanone and Spirochromane Derivatives. HETEROCYCLES 2022. [DOI: 10.3987/rev-21-965] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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12
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DBU-catalyzed Michael addition of bulky glycine imine to α,β-unsaturated isoxazoles and pyrazolamides. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132511] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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13
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Sharma P, Gupta R, Bansal RK. Recent advances in organocatalytic asymmetric aza-Michael reactions of amines and amides. Beilstein J Org Chem 2021; 17:2585-2610. [PMID: 34760026 PMCID: PMC8551878 DOI: 10.3762/bjoc.17.173] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/12/2021] [Accepted: 09/27/2021] [Indexed: 11/23/2022] Open
Abstract
Nitrogen-containing scaffolds are ubiquitous in nature and constitute an important class of building blocks in organic synthesis. The asymmetric aza-Michael reaction (aza-MR) alone or in tandem with other organic reaction(s) is an important synthetic tool to form new C-N bond(s) leading to developing new libraries of diverse types of bioactive nitrogen compounds. The synthesis and application of a variety of organocatalysts for accomplishing highly useful organic syntheses without causing environmental pollution in compliance with 'Green Chemistry" has been a landmark development in the recent past. Application of many of these organocatalysts has been extended to asymmetric aza-MR during the last two decades. The present article overviews the literature published during the last 10 years concerning the asymmetric aza-MR of amines and amides catalysed by organocatalysts. Both types of the organocatalysts, i.e., those acting through non-covalent interactions and those working through covalent bond formation have been applied for the asymmetric aza-MR. Thus, the review includes the examples wherein cinchona alkaloids, squaramides, chiral amines, phase-transfer catalysts and chiral bifunctional thioureas have been used, which activate the substrates through hydrogen bond formation. Most of these reactions are accompanied by high yields and enantiomeric excesses. On the other hand, N-heterocyclic carbenes and chiral pyrrolidine derivatives acting through covalent bond formation such as the iminium ions with the substrates have also been included. Wherever possible, a comparison has been made between the efficacies of various organocatalysts in asymmetric aza-MR.
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Affiliation(s)
- Pratibha Sharma
- Department of Chemistry, The IIS (deemed to be University), Jaipur 302 020, India
| | - Raakhi Gupta
- Department of Chemistry, The IIS (deemed to be University), Jaipur 302 020, India
| | - Raj Kumar Bansal
- Department of Chemistry, The IIS (deemed to be University), Jaipur 302 020, India
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14
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Gezegen H, Tutar U, Hepokur C, Tüzün G, Atioğlu Z, Akkurt M. Michael/Michael Addition Cascade of 2‐Benzylidene‐1‐indanones with Chalcones: Synthesis and Biological Evaluations of Novel Polycyclic Compounds. ChemistrySelect 2021. [DOI: 10.1002/slct.202102738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hayreddin Gezegen
- Department of Nutrition and Dietetics Faculty of Health Sciences Sivas Cumhuriyet University 58140 Sivas Turkey
| | - Uğur Tutar
- Department of Pharmaceutical Botany Faculty of Pharmacy Sivas Cumhuriyet University 58140 Sivas Turkey
| | - Ceylan Hepokur
- Department of Biochemistry Faculty of Pharmacy Sivas Cumhuriyet University 58140 Sivas Turkey
| | - Gamze Tüzün
- Department of Biochemistry Faculty of Pharmacy Sivas Cumhuriyet University 58140 Sivas Turkey
| | - Zeliha Atioğlu
- Department of Aircraft Electrics and Electronics School of Applied Sciences Cappadocia University, Mustafapaşa 50420 Ürgüp, Nevşehir Turkey
| | - Mehmet Akkurt
- Department of Physics, Faculty of Sciences Erciyes University 38039 Kayseri Turkey
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15
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Das T, Mohapatra S, Mishra NP, Nayak S, Raiguru BP. Recent Advances in Organocatalytic Asymmetric Michael Addition Reactions to α, β‐Unsaturated Nitroolefins. ChemistrySelect 2021. [DOI: 10.1002/slct.202100679] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Tapaswini Das
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
| | - Seetaram Mohapatra
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
| | - Nilima P. Mishra
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
| | - Sabita Nayak
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
| | - Bishnu P. Raiguru
- Organic Synthesis Laboratory, Department of Chemistry Ravenshaw University Cuttack 753003, Odisha India
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16
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Su G, Thomson CJ, Yamazaki K, Rozsar D, Christensen KE, Hamlin TA, Dixon DJ. A bifunctional iminophosphorane squaramide catalyzed enantioselective synthesis of hydroquinazolines via intramolecular aza-Michael reaction to α,β-unsaturated esters. Chem Sci 2021; 12:6064-6072. [PMID: 33996002 PMCID: PMC8098679 DOI: 10.1039/d1sc00856k] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023] Open
Abstract
An efficient synthesis of enantioenriched hydroquinazoline cores via a novel bifunctional iminophosphorane squaramide catalyzed intramolecular aza-Michael reaction of urea-linked α,β-unsaturated esters is described. The methodology exhibits a high degree of functional group tolerance around the forming hydroquinazoline aryl core and wide structural variance on the nucleophilic N atom of the urea moiety. Excellent yields (up to 99%) and high enantioselectivities (up to 97 : 3 er) using both aromatic and less acidic aliphatic ureas were realized. The potential industrial applicability of the transformation was demonstrated in a 20 mmol scale-up experiment using an adjusted catalyst loading of 2 mol%. The origin of enantioselectivity and reactivity enhancement provided by the squaramide motif has been uncovered computationally using density functional theory (DFT) calculations, combined with the activation strain model (ASM) and energy decomposition analysis (EDA). The activation of both aromatic and aliphatic ureas as N-centered nucleophiles in intramolecular Michael addition reactions to α,β-unsaturated esters was achieved under bifunctional iminophosphorane squaramide superbase catalysis.![]()
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Affiliation(s)
- Guanglong Su
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Connor J Thomson
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Ken Yamazaki
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK .,Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam De Boelelaan 1083, 1081 HV Amsterdam The Netherlands
| | - Daniel Rozsar
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Kirsten E Christensen
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
| | - Trevor A Hamlin
- Department of Theoretical Chemistry, Amsterdam Institute of Molecular and Life Sciences (AIMMS), Amsterdam Center for Multiscale Modeling (ACMM), Vrije Universiteit Amsterdam De Boelelaan 1083, 1081 HV Amsterdam The Netherlands
| | - Darren J Dixon
- Department of Chemistry, Chemistry Research Laboratory, University of Oxford Mansfield Road Oxford OX1 3TA UK
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17
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Stereoselective organocascades: from fundamentals to recent developments. PHYSICAL SCIENCES REVIEWS 2021. [DOI: 10.1515/psr-2018-0096] [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
Reaction sequences where more bonds are sequentially formed (cascade reactions) may be started either by a stoichiometric or by a catalytic reagent, and proceed in an enantio- diastereo- or non-stereo- selective manner. A wide variety of such strategies has been developed, including both stoichiometric and catalytic ones.
Within the widely developed cascade reactions field, this chapter is not meant to be omni-comprehensive, but to offer an as much as possible complete overview on organocatalytic stereoselective methods. We embrace the more general definitions by Tietze and Denmark, considering as cascade reactions all those one-pot processes that involve two or more bond formations, where each subsequent step is enabled by a structural change caused by the previous one. We will include both two- and multi-component reactions where one or more organocatalysts may be responsible either for all or just some of the occurring transformations. Organocascades will be reported according to the number of involved catalytic cycles.
In the following paragraphs, only cascade reactions that are stereoselective by means of a chiral catalyst will be considered. It will be shown that multiple possibilities, relying on different catalysis modes, are available to achieve the same reaction sequence.
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18
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Gao YQ, Hou Y, Chen J, Zhen Y, Xu D, Zhang H, Wei H, Xie W. Asymmetric synthesis of 9-alkyl tetrahydroxanthenones via tandem asymmetric Michael/cyclization promoted by chiral phosphoric acid. Org Biomol Chem 2021; 19:348-354. [PMID: 33300926 DOI: 10.1039/d0ob02140g] [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
A tandem asymmetric Michael-addition/cyclization of cyclic 1,3-dicarbonyl compounds to β,γ-unsaturated α-ketoesters catalyzed by chiral phosphoric acid is presented. This protocol provides a facile approach for the construction of enantioenriched 9-alkyl tetrahydroxanthenones, an ubiquitous framework found in a number of natural products and pharmaceutical molecules, in high yields with good to high enantioselectivities.
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Affiliation(s)
- Yu-Qi Gao
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Yi Hou
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Junhan Chen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Yanxia Zhen
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Dongyang Xu
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Hongli Zhang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China.
| | - Hongbo Wei
- Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
| | - Weiqing Xie
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest A&F University, 22 Xinong Road, Yangling 712100, Shaanxi, China. and Key Laboratory of Botanical Pesticide R&D in Shaanxi Province, Yangling, Shaanxi 712100, China
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19
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Kondoh A, Terada M. Brønsted Base-Catalyzed Formal Reductive [3+2] Annulation of 4,4,4-Trifluorocrotonate and α-Iminoketones. Chemistry 2021; 27:585-588. [PMID: 32869872 DOI: 10.1002/chem.202002943] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2020] [Revised: 08/27/2020] [Indexed: 02/01/2023]
Abstract
A formal reductive [3+2] annulation of 4,4,4-trifluorocrotonate and α-iminoketones was developed under Brønsted base catalysis. A single phosphazene base efficiently catalyzes the one-pot tandem reaction involving two mechanistically different elementary processes, namely the chemoselective reduction of an imine moiety of α-iminoketones with thiols as the reductant and the subsequent intermolecular Michael addition of an enolate of α-aminoketones concomitant with lactam formation. This operationally simple method provides β-trifluoromethyl-substituted γ-lactams with a tetrasubstituted carbon as a single diastereomer.
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Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan
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20
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Song X, Yan RJ, Du W, Chen YC. Asymmetric Dearomative Cascade Multiple Functionalizations of Activated N-Alkylpyridinium and N-Alkylquinolinium Salts. Org Lett 2020; 22:7617-7621. [PMID: 32940478 DOI: 10.1021/acs.orglett.0c02828] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
An enantioselective cascade reaction of N-alkylpyridinium and -quinolinium salts with o-hydroxybenzylideneacetones to access fused polyheterocycles through cross dienamine-mediated addition followed by trapping of the dearomatized enamine-type intermediates and aminal formation has been developed. A cascade assembly of N-benzyl-4-methylpyridinium salt and cyclic 2,4-dienones is further disclosed to give bridged frameworks via repetitive dearomatization and aromatization activation.
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Affiliation(s)
- Xue Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ru-Jie Yan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Ministry of Education and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.,College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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21
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Kondoh A, Ma C, Terada M. Synthesis of diarylalkanes through an intramolecular/intermolecular addition sequence by auto-tandem catalysis with strong Brønsted base. Chem Commun (Camb) 2020; 56:10894-10897. [PMID: 32940279 DOI: 10.1039/d0cc04512h] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
An auto-tandem catalysis with a strong Brønsted base enabled the synthesis of diarylalkanes containing a benzofuran moiety. Potassium tert-butoxide efficiently catalyzed both the intramolecular cyclization of less acidic ortho-alkynylaryl benzyl ethers and the following intermolecular addition of diarylmethanes to styrenes, demonstrating the high potential of the catalysis in organic synthesis.
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Affiliation(s)
- Azusa Kondoh
- Research and Analytical Center for Giant Molecules, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai, 980-8578, Japan.
| | - Chaoyan Ma
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
| | - Masahiro Terada
- Department of Chemistry, Graduate School of Science, Tohoku University, Aramaki, Aoba-ku, Sendai 980-8578, Japan.
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22
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Pellissier H. Recent Developments in Enantioselective Multicatalyzed Tandem Reactions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000210] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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23
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Kozma V, Fülöp F, Szőllősi G. 1,2‐Diamine‐Derived (thio)Phosphoramide Organocatalysts in Asymmetric Michael Additions. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000335] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Viktória Kozma
- Department of Organic ChemistryUniversity of Szeged 6720 Szeged Dóm tér 8 Hungary
| | - Ferenc Fülöp
- Institute of Pharmaceutical ChemistryUniversity of Szeged 6720 Szeged Eötvös utca 6 Hungary
- MTA-SZTE Stereochemistry Research GroupUniversity of Szeged 6720 Szeged Eötvös utca 6 Hungary
- University of Szeged, Interdisciplinary Excellence CentreInstitute of Pharmaceutical Chemistry 6720 Szeged Eötvös utca 6 Hungary
| | - György Szőllősi
- MTA-SZTE Stereochemistry Research GroupUniversity of Szeged 6720 Szeged Eötvös utca 6 Hungary
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24
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Mato R, Reyes E, Carrillo L, Uria U, Prieto L, Manzano R, Vicario JL. Catalytic enantioselective domino Michael/transannular aldol reaction under bifunctional catalysis. Chem Commun (Camb) 2020; 56:13149-13152. [DOI: 10.1039/d0cc05981a] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Chiral bifunctional tertiary amine/squaramides catalyze the enantioselective Michael/transannular aldol reaction on medium-sized cyclic ketoenones leading to bicycle[5.4.0]undecanes.
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Affiliation(s)
- Raquel Mato
- Department of Organic Chemistry II
- University of the Basque Country
- 48080 Bilbao
- Spain
| | - Efraim Reyes
- Department of Organic Chemistry II
- University of the Basque Country
- 48080 Bilbao
- Spain
| | - Luisa Carrillo
- Department of Organic Chemistry II
- University of the Basque Country
- 48080 Bilbao
- Spain
| | - Uxue Uria
- Department of Organic Chemistry II
- University of the Basque Country
- 48080 Bilbao
- Spain
| | - Liher Prieto
- Department of Organic Chemistry II
- University of the Basque Country
- 48080 Bilbao
- Spain
| | - Ruben Manzano
- Department of Organic Chemistry II
- University of the Basque Country
- 48080 Bilbao
- Spain
| | - Jose L. Vicario
- Department of Organic Chemistry II
- University of the Basque Country
- 48080 Bilbao
- Spain
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25
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Hu XM, Dong H, Li YD, Huang P, Tian Z, Wang PA. Tandem grinding reactions involving aldol condensation and Michael addition in sequence for synthesis of 3,4,5-trisubstituted isoxazoles. RSC Adv 2019; 9:27883-27887. [PMID: 35530461 PMCID: PMC9071175 DOI: 10.1039/c9ra04864b] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 08/23/2019] [Indexed: 11/28/2022] Open
Abstract
A one-pot, base-catalyzed, tandem grinding process involving carrying out aldol condensation and Michael addition in sequence to produce 3,4,5-trisubstituted isoxazoles from 3,5-dimethyl-4-nitroisoxazole, aromatic aldehydes and activated methylene compounds has been developed. In the presence of 10 mol% of pyrrolidine, aldol condensations of 3,5-dimethyl-4-nitroisoxazole with various aromatic aldehydes were performed with 3–10 minutes of grinding to provide 5-styryl-3-methyl-4-nitroisoxazoles in good to quantitative yields without further purification. Then, Michael additions between 5-styryl-3-methyl-4-nitroisoxazoles and activated methylene compounds (including ethyl 2-nitroacetate and alkyl 2-cyanoacetates) were carried out in the presence of 10 mol% of Et3N in the same mortar with 3–5 minutes of continuous grinding to produce 3,4,5-trisubstituted isoxazoles in good to excellent yields. 3,4,5-Trisubstituted isoxazoles were prepared, using a tandem grinding strategy, from aromatic aldehydes, 3,5-dimethyl-4-nitroisoxazole and activated methylene compounds in the presence of pyrrolidine and Et3N with high yields and efficiency.![]()
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Affiliation(s)
- Xiao-Mu Hu
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University Changle Xilu 169 Xi'an 710032 P. R. China
| | - Hai Dong
- College of Pharmacy, Xi'an Medical University No. 1 Xinwang Rd, Weiyang Dist. Xi'an 710021 P. R. China
| | - Yue-Dan Li
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University Changle Xilu 169 Xi'an 710032 P. R. China
| | - Ping Huang
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University Changle Xilu 169 Xi'an 710032 P. R. China
| | - Zhuang Tian
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University Changle Xilu 169 Xi'an 710032 P. R. China
| | - Ping-An Wang
- Department of Medicinal Chemistry, School of Pharmacy, The Fourth Military Medical University Changle Xilu 169 Xi'an 710032 P. R. China
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26
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Xie G, Zhang J, Ma X. Compartmentalization of Multiple Catalysts into Outer and Inner Shells of Hollow Mesoporous Nanospheres for Heterogeneous Multi-Catalyzed/Multi-Component Asymmetric Organocascade. ACS Catal 2019. [DOI: 10.1021/acscatal.9b01608] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Guangxin Xie
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Jianing Zhang
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
| | - Xuebing Ma
- College of Chemistry and Chemical Engineering, Southwest University, Chongqing 400715, P. R. China
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27
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Tao BK, Yang H, Hua YZ, Wang MC. Dinuclear zinc synergistic catalytic asymmetric phospha-Michael/Michael cascade reaction: synthesis of 1,2,3-trisubstituted indanes bearing phosphoryl groups. Org Biomol Chem 2019; 17:4301-4310. [PMID: 30969299 DOI: 10.1039/c9ob00544g] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
A new dinuclear zinc synergistic catalytic asymmetric phospha-Michael/Michael cascade reaction of o-dienones and dialkyl phosphates is reported. This method has been proven to be general and efficient for the formation of a range of chiral 1,2,3-trisubstituted indane compounds containing phosphorus groups in good yields (up to 92%) with excellent stereoselectivities (up to >99% ee and up to >99 : 1 dr). The relative configuration of the product was identified as having a trans,trans substitution pattern via two-dimensional (2D) nuclear Overhauser effect spectroscopy 1H-1H NMR experiments. A possible mechanism was proposed.
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Affiliation(s)
- Bing-Kai Tao
- College of Chemistry and Molecular Engineering, School of Pharmaceutical Sciences, Zhengzhou University, No. 100, Science Road, Zhengzhou City, Henan province 450000, P. R. China.
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28
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Asymmetric organocatalytic cascade Michael/acyl transfer reaction of 2-hydroxychalcones with α-nitroketones. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.03.021] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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29
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Chaudhari P, Hong BC, Wen CL, Lee GH. Asymmetric Synthesis of Spirocyclopentane Oxindoles Containing Four Consecutive Stereocenters and Quaternary α-Nitro Esters via Organocatalytic Enantioselective Michael-Michael Cascade Reactions. ACS OMEGA 2019; 4:655-667. [PMID: 31459355 PMCID: PMC6648780 DOI: 10.1021/acsomega.8b03049] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 12/24/2018] [Indexed: 06/10/2023]
Abstract
An enantioselective domino Michael-Michael reaction of nitroolefins and 2-nitro-3-arylacrylates has been established, which provided a series of spirocyclopentane oxindoles with four consecutive stereocenters including quaternary α-nitro esters with good yields (up to 73%) and excellent enantioselectivities (up to 97% ee). The reaction was realized and optimized with the aid of a chiral squaramide-amine catalyst. The structures of 11 products were confirmed by single-crystal X-ray diffraction analysis.
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Affiliation(s)
- Prakash
D. Chaudhari
- Department
of Chemistry and Biochemistry, National
Chung Cheng University, Chia-Yi 621, Taiwan, ROC
| | - Bor-Cherng Hong
- Department
of Chemistry and Biochemistry, National
Chung Cheng University, Chia-Yi 621, Taiwan, ROC
| | - Chao-Lin Wen
- Department
of Chemistry and Biochemistry, National
Chung Cheng University, Chia-Yi 621, Taiwan, ROC
| | - Gene-Hsiang Lee
- Instrumentation
Center, National Taiwan University, Taipei 106, Taiwan, ROC
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30
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Vinogradov MG, Turova OV, Zlotin SG. Recent advances in the asymmetric synthesis of pharmacology-relevant nitrogen heterocycles via stereoselective aza-Michael reactions. Org Biomol Chem 2019; 17:3670-3708. [DOI: 10.1039/c8ob03034k] [Citation(s) in RCA: 85] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
In this review, recent applications of a stereoselective aza-Michael reaction for asymmetric synthesis of naturally occurring N-containing heterocyclic scaffolds and their usefulness to pharmacology are summarized.
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Affiliation(s)
- Maxim G. Vinogradov
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Olga V. Turova
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
| | - Sergei G. Zlotin
- N.D. Zelinsky Institute of Organic Chemistry
- Russian Academy of Sciences
- 119991 Moscow
- Russian Federation
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31
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Duan C, Yao Y, Ye L, Shi Z, Zhao Z, Li X. Highly stereoselective construction of tetrahydroquinolines via cascade aza-Michael-Michael reaction: Formal [4+2] cycloaddition of β,γ-unsaturated α-ketoesters with 2-aminochalcones. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.10.053] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
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32
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Tukhvatshin RS, Kucherenko AS, Nelyubina YV, Zlotin SG. Stereoselective Synthesis of Tetrahydroquinolines via Asymmetric Domino Reaction Catalyzed by a Recyclable Ionic-Liquid-Supported Bifunctional Tertiary Amine. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801423] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Rinat S. Tukhvatshin
- N.D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospect 119991 Moscow Russian Federation
| | - Alexander S. Kucherenko
- N.D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospect 119991 Moscow Russian Federation
| | - Yulia V. Nelyubina
- A.N. Nesmeyanov Institute of Organoelement Compounds; Russian Academy of Sciences; 28, Vavilova str 119991 Moscow Russia
| | - Sergei G. Zlotin
- N.D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; 47 Leninsky Prospect 119991 Moscow Russian Federation
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33
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Huang W, Gurubrahamam R, Chen K. An Unprecedented Organocascade Synthesis of Functionalized Bicyclic Nitrones from 2‐Aminomalonate Derived Nucleophiles and 1‐Nitro‐1,3‐Enynes via Allenes Formation and Subsequent Rearrangement. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801161] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Wan‐Yun Huang
- Department of ChemistryNational Taiwan Normal University Taipei Taiwan 11677
| | - Ramani Gurubrahamam
- Department of ChemistryNational Taiwan Normal University Taipei Taiwan 11677
| | - Kwunmin Chen
- Department of ChemistryNational Taiwan Normal University Taipei Taiwan 11677
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34
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Andrés JM, Maestro A, Valle M, Pedrosa R. Chiral Bifunctional Thioureas and Squaramides and Their Copolymers as Recoverable Organocatalysts. Stereoselective Synthesis of 2-Substituted 4-Amino-3-nitrobenzopyrans and 3-Functionalized 3,4-Diamino-4H-Chromenes. J Org Chem 2018; 83:5546-5557. [DOI: 10.1021/acs.joc.8b00567] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- José M. Andrés
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011-Valladolid, Spain
| | - Alicia Maestro
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011-Valladolid, Spain
| | - María Valle
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011-Valladolid, Spain
| | - Rafael Pedrosa
- Instituto CINQUIMA and Departamento de Química Orgánica, Facultad de Ciencias, Universidad de Valladolid, Paseo de Belén 7, 47011-Valladolid, Spain
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35
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Prakasham A, Gangwar MK, Ghosh P. Michael addition of cyclic β-oxo ester and α-methyl cyano ester substrates with activated olefins by iron complexes of benzimidazole derived N -heterocyclic carbene ligands. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2018.01.061] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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36
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Synthesis of the diarylindolizidine alkaloid (+)-Fistulopsine B: Application of an organocatalytic Michael addition reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.01.032] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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37
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Merad J, Lalli C, Bernadat G, Maury J, Masson G. Enantioselective Brønsted Acid Catalysis as a Tool for the Synthesis of Natural Products and Pharmaceuticals. Chemistry 2017; 24:3925-3943. [PMID: 28981209 DOI: 10.1002/chem.201703556] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2017] [Indexed: 11/07/2022]
Abstract
Synthesis of biologically active molecules (whether at laboratory or industrial scale) remains a highly appealing area of modern organic chemistry. Nowadays, the need to access original bioactive scaffolds goes together with the desire to improve synthetic efficiency, while reducing the environmental footprint of chemical activities. Long neglected in the field of total synthesis, enantioselective organocatalysis has recently emerged as an environmentally friendly and indispensable tool for the construction of relevant bioactive molecules. Notably, enantioselective Brønsted acid catalysis has offered new opportunities in terms of both retrosynthetic disconnections and controlling stereoselectivity. The present report attempts to provide an overview of enantioselective total or formal syntheses designed around Brønsted acid-catalyzed transformations. To demonstrate the versatility of the reactions promoted and the diversity of the accessible motifs, this Minireview draws a systematic parallel between methods and retrosynthetic analysis. The manuscript is organized according to the main reaction types and the nature of newly-formed bonds.
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Affiliation(s)
- Jérémy Merad
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 av. de la Terrasse, 91198, Gif-sur-Yvette Cedex, France
| | - Claudia Lalli
- Universite de Rennes 1, UMR CNRS 6226, Institut des Sciences, Chimiques de Rennes, 2 avenue du Prof Léon Bernard, 35043, Rennes Cedex, France
| | - Guillaume Bernadat
- Laboratoire Biocis/ UMR-8076, LabEx LERMIT, Faculté de Pharmacie, 5 rue J.-B. Clément, 92296, Châtenay-Malabry Cedex, France
| | - Julien Maury
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 av. de la Terrasse, 91198, Gif-sur-Yvette Cedex, France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 av. de la Terrasse, 91198, Gif-sur-Yvette Cedex, France
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38
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Xu J, Pang J, Feng D, Ma X. Jorgensen–Hayashi organocatalyst/Brønsted acid-tethered multifunctional polymeric nanospheres for complex asymmetric multicomponent/multicatalysed organocatalysis: Heterogeneous Michael/Michael/aldol organocascade and [4+2] cycloaddition reactions. MOLECULAR CATALYSIS 2017. [DOI: 10.1016/j.mcat.2017.09.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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39
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Montgomery TD, Smith AB. α-Silyl Amides: Effective Bifunctional Lynchpins for Type I Anion Relay Chemistry. Org Lett 2017; 19:6216-6219. [PMID: 29120188 PMCID: PMC5712993 DOI: 10.1021/acs.orglett.7b03142] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Lynchpins comprising α-silyl amides have been validated for type I anion relay chemistry (ARC) to permit ready access to γ-ketoamides. Importantly, the ARC protocol can be run at ambient temperature without the need of additional reagents to trigger the [1,4] Brook rearrangement.
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40
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Zlotin SG, Churakov AM, Dalinger IL, Luk’yanov OA, Makhova NN, Sukhorukov AY, Tartakovsky VA. Recent advances in synthesis of organic nitrogen–oxygen systems for medicine and materials science. MENDELEEV COMMUNICATIONS 2017. [DOI: 10.1016/j.mencom.2017.11.001] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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41
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Liu Y, Zhang Y, Duan HX, Wanyan DY, Wang YQ. Enantioselective organocatalytic Michael additions of N,N'-dialkylbarbituric acids to enones. Org Biomol Chem 2017; 15:8669-8679. [PMID: 28990625 DOI: 10.1039/c7ob02116j] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
N,N'-Dialkylbarbituric acids as cyclic malonamide donors were successfully used in the enantioselective Michael addition reaction of enones. Using cinchona alkaloid-based bifunctional squaramide as an organocatalyst, this Michael reaction of N,N'-di-tert-butylbarbituric acid with various enones features a highly enantioselective (91-99% ee) production of the corresponding optically active 5-substituted barbituric acid derivatives. The transformations of the Michael product for the barbituric acid structural unit were realized in two ways, deprotection to remove the N-tert-butyl group and alkylation to produce 5,5-disubstituted barbituric acid derivatives.
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Affiliation(s)
- Ying Liu
- Provincial Key Laboratory of Polyoxometalate Chemistry, Provincial Key Laboratory of Natural Medicine and Immuno-Engineering, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, P. R. China.
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42
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Kumar M, Arya AK, George J, Arya K, Pardasani R. DFT Studied Hetero-Diels-Alder Cycloaddition for the Domino Synthesis of Spiroheterocycles Fused to Benzothiazole and Chromene/Pyrimidine Rings in Aqueous Media. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.2964] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Mahendra Kumar
- Department of Chemistry; University of Rajasthan; Jaipur 302 055 India
| | - Anand Kumar Arya
- DESM, Regional Institute of Education (NCERT); Ajmer 305 004 India
| | - Johnson George
- Department of Chemistry; University of Rajasthan; Jaipur 302 055 India
| | - Kritika Arya
- Department of Chemistry; Banasthali University; Tonk 304022 India
| | - R.T. Pardasani
- Department of Chemistry; Central University of Rajasthan; Bandarsindri Ajmer 305 801 India
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Wang DC, Huang PH, Huang WW, Cheng YS, Chen K. Organocascade Synthesis of Bicyclo[3.3.1]nonan-9-ones Initiated by an Unusual 1,6-Addition of Cyclohexanones to (E
)-2-(3-Arylallylidene)-1H
-indene-1,3(2H
)-diones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700338] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- De-Chih Wang
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 11677
| | - Pin-Han Huang
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 11677
| | - Wan-Wun Huang
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 11677
| | - You-Song Cheng
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 11677
| | - Kwunmin Chen
- Department of Chemistry; National Taiwan Normal University; Taipei Taiwan 11677
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