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Li SY, Yang XY, Shen PH, Xu L, Xu J, Zhang Q, Xu HJ. Selective Defluoroalkylation and Hydrodefluorination of Trifluoromethyl Groups Photocatalyzed by Dihydroacridine Derivatives. J Org Chem 2023. [PMID: 38054778 DOI: 10.1021/acs.joc.3c02135] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
The selective functionalization of trifluoromethyl groups through C-F cleavage poses a significant challenge due to the high bond energy of the C(sp3)-F bonds. Herein, we present dihydroacridine derivatives as photocatalysts that can functionalize the C-F bond of trifluoromethyl groups with various alkenes under mild conditions. Mechanistic studies and DFT calculations revealed that upon irradiation, the dihydroacridine derivatives exhibit high reducibility and function as photocatalysts for reductive defluorination. This process involves a sequential single-electron transfer mechanism. This research provides valuable insights into the properties of dihydroacridine derivatives as photocatalysts, highlighting the importance of maintaining a planar conformation and a large conjugated system for optimal catalytic activity. These findings facilitate the efficient catalytic reduction of inert chemical bonds.
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Affiliation(s)
- Shi-Yu Li
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advance Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei 230009, P.R. China
| | - Xin-Yu Yang
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P.R. China
| | - Peng-Hui Shen
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P.R. China
| | - Lei Xu
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advance Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei 230009, P.R. China
| | - Jun Xu
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P.R. China
| | - Qi Zhang
- Institute of Industry & Equipment Technology, Hefei University of Technology, Hefei 230009, P.R. China
| | - Hua-Jian Xu
- School of Chemistry and Chemical Engineering, Anhui Province Key Laboratory of Advance Catalytic Materials and Reaction Engineering, Hefei University of Technology, Hefei 230009, P.R. China
- School of Food and Biological Engineering, Hefei University of Technology, Hefei 230009, P.R. China
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Deihl ED, Jesikiewicz LT, Newman LJ, Liu P, Brummond KM. Rh(I)-Catalyzed Allenic Pauson-Khand Reaction to Access the Thapsigargin Core: Influence of Furan and Allenyl Chloroacetate Groups on Enantioselectivity. Org Lett 2022; 24:995-999. [PMID: 35081313 DOI: 10.1021/acs.orglett.1c03951] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Thapsigargin (Tg) is a potent SERCA pump inhibitor with the potential to treat cancer and COVID-19. We have extended the scope of the asymmetric allenic Pauson-Khand reaction to furan-tethered allene-ynes, a stereoconvergent transformation affording the 5,7,5-ring system of Tg in good yields and high enantioselectivity. Computational studies of the oxidative cyclization step show that the furan and chloroacetate groups contribute to this high selectivity.
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Affiliation(s)
- Eric D Deihl
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Luke T Jesikiewicz
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Logan J Newman
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
| | - Kay M Brummond
- Department of Chemistry, University of Pittsburgh, Pittsburgh, Pennsylvania 15260, United States
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Yang JD, Chen BL, Zhu XQ. New Insight into the Mechanism of NADH Model Oxidation by Metal Ions in Nonalkaline Media. J Phys Chem B 2018; 122:6888-6898. [PMID: 29886742 DOI: 10.1021/acs.jpcb.8b03453] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
For a long time, it has been controversial that the three-step (e-H+-e) or two-step (e-H•) mechanism was used for the oxidation of nicotinamide adenine dinucleotide coenzyme (NADH) and its models by metal ions in nonalkaline media. The latter mechanism has been accepted by the majority of researchers. In this work, 1-benzyl-1,4-dihydronicotinamide (BNAH) and 1-phenyl-l,4-dihydronicotinamide are used as NADH models and ferrocenium (Fc+) metal ion as an electron acceptor. The kinetics for oxidation of the NADH models by Fc+ in pure acetonitrile was monitored by using UV-vis absorption and a quadratic relationship between kobs and the concentrations of NADH models was found for the first time. The rate expression of the reactions developed according to the three-step mechanism is quite consistent with the quadratic curves. The rate constants, thermodynamic driving forces, and kinetic isotope effects of each elementary step for the reactions were estimated. All results supported the three-step mechanism. The intrinsic kinetic barriers of the proton transfer from BNAH+• to BNAH and the hydrogen-atom transfer from BNAH+• to BNAH+• were estimated by using Zhu equation; the results showed that the former is 11.8 kcal/mol and the latter is larger than 24.3 kcal/mol. It is the large intrinsic kinetic barrier of the hydrogen-atom transfer that makes the reactions choose the three-step rather than two-step mechanism. Further investigation of the factors affecting the intrinsic kinetic barrier of chemical reactions indicated that the large intrinsic kinetic barrier of the hydrogen-atom transfer originated from the repulsion of positive charges between BNAH+• and BNAH+•. The greatest contribution of this work is the discovery of the quadratic dependence of kobs on the concentrations of the NADH models, which is inconsistent with the conventional viewpoint of the "two-step mechanism" on the oxidation of NADH and its models by metal ions in the nonalkaline media.
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Affiliation(s)
- Jin-Dong Yang
- Center of Basic Molecular Science, Department of Chemistry , Tsinghua University , Beijing 100084 , China
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Van Arman SA, Zimmet AJ, Murray IE. A Hantzsch Amido Dihydropyridine as a Transfer Hydrogenation Reagent for α,β-Unsaturated Ketones. J Org Chem 2016; 81:3528-32. [DOI: 10.1021/acs.joc.6b00041] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Scott A. Van Arman
- Department of Chemistry, Franklin and Marshall College, Lancaster, Pennsylvania 17604-3003, United States
| | - Austin J. Zimmet
- Department of Chemistry, Franklin and Marshall College, Lancaster, Pennsylvania 17604-3003, United States
| | - Ian E. Murray
- Department of Chemistry, Franklin and Marshall College, Lancaster, Pennsylvania 17604-3003, United States
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Escande V, Renard BL, Grison C. Lewis acid catalysis and Green oxidations: sequential tandem oxidation processes induced by Mn-hyperaccumulating plants. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2015; 22:5633-5652. [PMID: 25263417 DOI: 10.1007/s11356-014-3631-z] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/06/2014] [Accepted: 09/18/2014] [Indexed: 06/03/2023]
Abstract
Among the phytotechnologies used for the reclamation of degraded mining sites, phytoextraction aims to diminish the concentration of polluting elements in contaminated soils. However, the biomass resulting from the phytoextraction processes (highly enriched in polluting elements) is too often considered as a problematic waste. The manganese-enriched biomass derived from native Mn-hyperaccumulating plants of New Caledonia was presented here as a valuable source of metallic elements of high interest in chemical catalysis. The preparation of the catalyst Eco-Mn1 and reagent Eco-Mn2 derived from Grevillea exul exul and Grevillea exul rubiginosa was investigated. Their unusual polymetallic compositions allowed to explore new reactivity of low oxidative state of manganese-Mn(II) for Eco-Mn1 and Mn(IV) for Eco-Mn2. Eco-Mn1 was used as a Lewis acid to catalyze the acetalization/elimination of aldehydes into enol ethers with high yields; a new green and stereoselective synthesis of (-)-isopulegol via the carbonyl-ene cyclization of (+)-citronellal was also performed with Eco-Mn1. Eco-Mn2 was used as a mild oxidative reagent and controlled the oxidation of aliphatic alcohols into aldehydes with quantitative yields. Oxidative cleavage was interestingly noticed when Eco-Mn2 was used in the presence of a polyol. Eco-Mn2 allowed direct oxidative iodination of ketones without using iodine, which is strongly discouraged by new environmental legislations. Finally, the combination of the properties in the Eco-Mn catalysts and reagents gave them an unprecedented potential to perform sequential tandem oxidation processes through new green syntheses of p-cymene from (-)-isopulegol and (+)-citronellal; and a new green synthesis of functionalized pyridines by in situ oxidation of 1,4-dihydropyridines.
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Affiliation(s)
- Vincent Escande
- Laboratoire de Chimie bio inspirée et Innovations écologiques, FRE 3673 ChimEco CNRS-UM2, Stratoz, Cap Alpha-Avenue de l'Europe, Clapiers, 34830, Montpellier, France
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Eey STC, Lear MJ. Total Synthesis of (−)-Platensimycin by Advancing Oxocarbenium- and Iminium-Mediated Catalytic Methods. Chemistry 2014; 20:11556-73. [DOI: 10.1002/chem.201400131] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2014] [Indexed: 11/10/2022]
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Strittmatter T, Brockmann A, Pott M, Hantusch A, Brunner T, Marx A. Expanding the scope of human DNA polymerase λ and β inhibitors. ACS Chem Biol 2014; 9:282-90. [PMID: 24171552 DOI: 10.1021/cb4007562] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The exact biological functions of individual DNA polymerases still await clarification, and therefore appropriate reagents to probe their respective functions are required. In the present study, we report the development of a highly potent series of human DNA polymerase λ and β (pol λ and β) inhibitors based on the rhodanine scaffold. Both enzymes are involved in DNA repair and are thus considered as future drug targets. We expanded the chemical diversity of the small-molecule inhibitors arising from a high content screening and designed and synthesized 30 novel analogues. By biochemical evaluation, we discovered 23 highly active compounds against pol λ. Importantly, 10 of these small-molecules selectively inhibited pol λ and not the homologous pol β. We discovered 14 small-molecules that target pol β and found out that they are more potent than known inhibitors. We also investigated whether the discovered compounds sensitize cancer cells toward DNA-damaging reagents. Thus, we cotreated human colorectal cancer cells (Caco-2) with the small-molecule inhibitors and hydrogen peroxide or the approved drug temozolomide. Interestingly, the tested compounds sensitized Caco-2 cells to both genotoxic agents in a DNA repair pathway-dependent manner.
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Affiliation(s)
- Tobias Strittmatter
- Departments of Chemistry
and Biology, Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | - Anette Brockmann
- Departments of Chemistry
and Biology, Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | - Moritz Pott
- Departments of Chemistry
and Biology, Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | - Annika Hantusch
- Departments of Chemistry
and Biology, Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | - Thomas Brunner
- Departments of Chemistry
and Biology, Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
| | - Andreas Marx
- Departments of Chemistry
and Biology, Konstanz Research School Chemical Biology, University of Konstanz, Universitätsstrasse 10, 78457 Konstanz, Germany
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Ramachary DB, Sakthidevi R, Reddy PS. Direct organocatalytic stereoselective transfer hydrogenation of conjugated olefins of steroids. RSC Adv 2013. [DOI: 10.1039/c3ra41519h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022] Open
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9
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Xiang J, Sun EX, Lian CX, Yuan WC, Zhu J, Wang Q, Deng J. The highly chemoselective transfer hydrogenation of the carbon–carbon double bond of conjugated nitroalkenes by a rhodium complex. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.04.028] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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10
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Tomašić T, Kovač A, Simčič M, Blanot D, Grdadolnik SG, Gobec S, Kikelj D, Peterlin Mašič L. Novel 2-thioxothiazolidin-4-one inhibitors of bacterial MurD ligase targeting d-Glu- and diphosphate-binding sites. Eur J Med Chem 2011; 46:3964-75. [DOI: 10.1016/j.ejmech.2011.05.070] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2011] [Revised: 05/11/2011] [Accepted: 05/28/2011] [Indexed: 12/27/2022]
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Zidar N, Tomasić T, Sink R, Rupnik V, Kovac A, Turk S, Patin D, Blanot D, Contreras Martel C, Dessen A, Müller Premru M, Zega A, Gobec S, Peterlin Masic L, Kikelj D. Discovery of novel 5-benzylidenerhodanine and 5-benzylidenethiazolidine-2,4-dione inhibitors of MurD ligase. J Med Chem 2010; 53:6584-94. [PMID: 20804196 DOI: 10.1021/jm100285g] [Citation(s) in RCA: 79] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We have designed, synthesized, and evaluated 5-benzylidenerhodanine- and 5-benzylidenethiazolidine-2,4-dione-based compounds as inhibitors of bacterial enzyme MurD with E. coli IC(50) in the range 45-206 μM. The high-resolution crystal structure of MurD in complex with (R,Z)-2-(3-[{4-([2,4-dioxothiazolidin-5-ylidene]methyl)phenylamino}methyl)benzamido)pentanedioic acid [(R)-32] revealed details of the binding mode of the inhibitor within the active site and provides a good foundation for structure-based design of a novel generation of MurD inhibitors.
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Affiliation(s)
- Nace Zidar
- Faculty of Pharmacy, University of Ljubljana, 1000 Ljubljana, Slovenia
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Tomasić T, Zidar N, Kovac A, Turk S, Simcic M, Blanot D, Müller-Premru M, Filipic M, Grdadolnik SG, Zega A, Anderluh M, Gobec S, Kikelj D, Peterlin Masic L. 5-Benzylidenethiazolidin-4-ones as multitarget inhibitors of bacterial Mur ligases. ChemMedChem 2010; 5:286-95. [PMID: 20024979 DOI: 10.1002/cmdc.200900449] [Citation(s) in RCA: 61] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Mur ligases participate in the intracellular path of bacterial peptidoglycan biosynthesis and constitute attractive, although so far underexploited, targets for antibacterial drug discovery. A series of hydroxy-substituted 5-benzylidenethiazolidin-4-ones were synthesized and tested as inhibitors of Mur ligases. The most potent compound 5 a was active against MurD-F with IC(50) values between 2 and 6 microm, making it a promising multitarget inhibitor of Mur ligases. Antibacterial activity against different strains, inhibitory activity against protein kinases, mutagenicity and genotoxicity of 5 a were also investigated, and kinetic and NMR studies were conducted.
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Affiliation(s)
- Tihomir Tomasić
- University of Ljubljana, Faculty of Pharmacy, Askerceva 7, 1000 Ljubljana, Slovenia
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Ramachary DB, Kishor M, Reddy GB. Development of drug intermediates by using direct organocatalytic multi-component reactions. Org Biomol Chem 2006; 4:1641-6. [PMID: 16633553 DOI: 10.1039/b602696f] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Novel, economic and environmentally friendly one-pot three-component Knoevenagel/hydrogenation (K/H) and four-component Knoevenagel/hydrogenation/alkylation (K/H/A) reactions of ketones, CH-acids, dihydropyridines and alkyl halides using proline and proline/metal carbonate catalysis, respectively, have been developed. Many of the products of these K/H and K/H/A reactions have direct applications in pharmaceutical chemistry.
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Ramachary DB, Reddy GB. Towards organo-click reactions: development of pharmaceutical ingredients by using direct organocatalytic bio-mimetic reductions. Org Biomol Chem 2006; 4:4463-8. [PMID: 17268640 DOI: 10.1039/b612611a] [Citation(s) in RCA: 59] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Economic and environmentally friendly bio-mimetic one-pot three and four-component Knoevenagel-hydrogenation (K-H), five-component Knoevenagel-hydrogenation-alkylation (K-H-A) and six-component Knoevenagel-hydrogenation-alkylation-Huisgen cycloaddition (K-H-A-HC) reactions of aldehydes, CH-acids, o-phenylenediamine, alkyl halides and azides using proline, proline-metal carbonate and proline-metal carbonate-Cu(I)-catalysis, respectively have been developed. Many of K-H and K-H-A compounds have direct application in pharmaceutical chemistry.
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Eine metallfreie Transferhydrierung: organokatalytische konjugierte Reduktion von α,β-ungesättigten Aldehyden. Angew Chem Int Ed Engl 2004. [DOI: 10.1002/ange.200461816] [Citation(s) in RCA: 97] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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17
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Yang JW, Hechavarria Fonseca MT, List B. A Metal-Free Transfer Hydrogenation: Organocatalytic Conjugate Reduction of ?,?-Unsaturated Aldehydes. Angew Chem Int Ed Engl 2004; 43:6660-2. [PMID: 15540245 DOI: 10.1002/anie.200461816] [Citation(s) in RCA: 294] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jung Woon Yang
- Max-Planck-Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 1, 45470 Mülheim an der Ruhr, Germany
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Zhang B, Zhu XQ, Lu JY, He J, Wang PG, Cheng JP. Polysiloxane-supported NAD(P)H model 1-benzyl-1,4-dihydronicotinamide: synthesis and application in the reduction of activated olefins. J Org Chem 2003; 68:3295-8. [PMID: 12688805 DOI: 10.1021/jo020319x] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A new polysiloxane-supported NAD(P)H model, 1-benzyl-1,4-dihydronicotinamide, was designed and synthesized, which can efficiently reduce many activated olefins under mild conditions. The most advantageous features of this new polysiloxane-supported reductant are (i) easy workup and separation of the reaction products and (ii) good potential for recycling use of the reductant, which makes this new polysiloxane-supported NAD(P)H model a promising alternative both in research laboratories and in industrial processes.
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Affiliation(s)
- Baolian Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Department of Chemistry, Nankai University, Tianjin 300071, China
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Hydrogen Transfer from Hantzsch 1,4-Dihydropyridines to Carbon-Carbon Double Bonds under Microwave Irradiation. Molecules 2002. [PMCID: PMC6146430 DOI: 10.3390/70700528] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022] Open
Abstract
1,4-Dihydropyridines (DHPs) have been used in the reduction of carbon-carbon double bonds under microwave irradiation without solvent. The efficiency of the reactions is dramatically dependent on the steric effects in the DHPs and on the electronic effects in the olefins.
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Hansen MM, Harkness AR, Khau VV, Martinelli MJ, Deeter JB. Synthesis of enantioenriched 4-thiazolidinone (−)-LY213829 by chemoselective benzylamide cleavage in the presence of a C-S bond. ACTA ACUST UNITED AC 1996. [DOI: 10.1016/0957-4166(96)00321-7] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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21
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Fujii M, Kawaguchi K, Nakamura K, Ohno A. Stereoselective Synthesis of (±)-Isonitramine and (±)-Sibirine. CHEM LETT 1992. [DOI: 10.1246/cl.1992.1493] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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22
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Leroy C, Levacher V, Dupas G, Bourguignon J, Quéguiner G. Study of the Reduction of Enamides with an NADH Model. Tetrahedron Lett 1992. [DOI: 10.1016/s0040-4039(00)91687-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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23
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Fujii M, Aida T, Yoshihara M, Ohno A. NAD(P)+–NAD(P)H Models. 71. A Convenient Route to the Synthesis of Juvabione. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1990. [DOI: 10.1246/bcsj.63.1255] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Sakai T, Miyata K, Tsuboi S, Utaka M. One-PotC-Arylmethylation of Active Methylene Compounds with Aromatic Aldehydes Induced by a Me3SiCl–NaI–MeCN Reagent. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1989. [DOI: 10.1246/bcsj.62.4072] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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25
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Fujii M, Aida T, Yoshihara M, Ohno A. NAD(P)+–NAD(P)H Models 70. Reduction of Imines with Hantzsch Ester in the Presence of Silica Gel. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1989. [DOI: 10.1246/bcsj.62.3845] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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26
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Inoue Y, Imaizumi S, Itoh H, Shinya T, Hashimoto H, Miyano S. Selective Reduction of Carbon–Carbon Double Bonds with an NAD(P)H Model–Acetic Acid System. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1988. [DOI: 10.1246/bcsj.61.3020] [Citation(s) in RCA: 16] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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27
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Yasui S, Fujii M, Ohno A. NAD(P)+–NAD(P)H Models. 64. The Quantitative Elucidation of the Mechanistic Aspects in the Silica Gel-Catalyzed Reduction of α,β-Unsaturated Carbonyl Compounds by a Model of NAD(P)H. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.4019] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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28
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Fujii M, Nakamura K, Yasui S, Oka S, Ohno A. NAD(P)+–NAD(P)H Model. 63. Regioselective Reduction of Dienoic Ketones and Aldehydes with an NAD(P)H Model on Silica Gel. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.2423] [Citation(s) in RCA: 23] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
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Yasui S, Fujii M, Nakamura K, Ohno A. NAD(P)+–NAD(P)H Model. 62. The Mechanism of the Silica Gel-Catalyzed Reduction with an NAD(P)H Model. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.963] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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30
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Sakai T, Miyata K, Utaka M, Takeda A. A Convenient Reduction Method of β-Phenyl α,β-Unsaturated Carbonyl Compounds with Me3SiCl–NaI–ROH Reagent. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.1063] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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31
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Chikashita H, Nishida S, Miyazaki M, Morita Y, Itoh K. In Situ Generation and Synthetic Application of 2-Phenylbenzimidazoline to the Selective Reduction of Carbon–Carbon Double Bonds of Electron-Deficient Olefins. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 1987. [DOI: 10.1246/bcsj.60.737] [Citation(s) in RCA: 72] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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