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Yang K, Chen CB, Liu ZW, Li ZL, Zeng Y, Wang ZY. C 3-Alkylation of Imidazo[1,2-a]pyridines via Three-Component Aza-Friedel-Crafts Reaction Catalyzed by Y(OTf) 3. Molecules 2024; 29:3463. [PMID: 39124868 PMCID: PMC11313794 DOI: 10.3390/molecules29153463] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2024] [Revised: 07/21/2024] [Accepted: 07/22/2024] [Indexed: 08/12/2024] Open
Abstract
As an important class of nitrogen-containing fused heterocyclic compounds, imidazo[1,2-a]pyridines often exhibit significant biological activities, such as analgesic, anticancer, antiosteoporosis, anxiolytic, etc. Using Y(OTf)3 as a Lewis acid catalyst, a simple and efficient method has been developed for the synthesis of C3-alkylated imidazo[1,2-a]pyridines through the three-component aza-Friedel-Crafts reaction of imidazo[1,2-a]pyridines, aldehydes, and amines in the normal air atmosphere without the protection of inert gas and special requirements for anhydrous and anaerobic conditions. A series of imidazo[1,2-a]pyridine derivatives were obtained with moderate to good yields, and their structures were confirmed by 1H NMR, 13C NMR, and HRMS. Furthermore, this conversion has the advantages of simple operation, excellent functional group tolerance, high atomic economy, broad substrate scope, and can achieve gram-level reactions. Notably, this methodology may be conveniently applied to the further design and rapid synthesis of potential biologically active imidazo[1,2-a]pyridines with multifunctional groups.
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Affiliation(s)
- Kai Yang
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (C.-B.C.); (Z.-W.L.); (Z.-L.L.)
| | - Cai-Bo Chen
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (C.-B.C.); (Z.-W.L.); (Z.-L.L.)
| | - Zhao-Wen Liu
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (C.-B.C.); (Z.-W.L.); (Z.-L.L.)
| | - Zhen-Lin Li
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (C.-B.C.); (Z.-W.L.); (Z.-L.L.)
| | - Yu Zeng
- School of Chemistry, South China Normal University, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou 510006, China;
| | - Zhao-Yang Wang
- School of Chemistry, South China Normal University, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou 510006, China;
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2
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Wagner F, Sagmeister P, Jusner CE, Tampone TG, Manee V, Buono FG, Williams JD, Kappe CO. A Slug Flow Platform with Multiple Process Analytics Facilitates Flexible Reaction Optimization. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2308034. [PMID: 38273711 PMCID: PMC10987115 DOI: 10.1002/advs.202308034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/30/2023] [Revised: 12/21/2023] [Indexed: 01/27/2024]
Abstract
Flow processing offers many opportunities to optimize reactions in a rapid and automated manner, yet often requires relatively large quantities of input materials. To combat this, the use of a flexible slug flow reactor, equipped with two analytical instruments, for low-volume optimization experiments are reported. A Buchwald-Hartwig amination toward the drug olanzapine, with 6 independent optimizable variables, is optimized using three different automated approaches: self-optimization, design of experiments, and kinetic modeling. These approaches are complementary and provide differing information on the reaction: pareto optimal operating points, response surface models, and mechanistic models, respectively. The results are achieved using <10% of the material that would be required for standard flow operation. Finally, a chemometric model is built utilizing automated data handling and three subsequent validation experiments demonstrate good agreement between the slug flow reactor and a standard (larger scale) flow reactor.
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Affiliation(s)
- Florian Wagner
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research Center Pharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13Graz8010Austria
- Institute of ChemistryUniversity of GrazNAWI Graz, Heinrichstrasse 28Graz8010Austria
| | - Peter Sagmeister
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research Center Pharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13Graz8010Austria
- Institute of ChemistryUniversity of GrazNAWI Graz, Heinrichstrasse 28Graz8010Austria
| | - Clemens E. Jusner
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research Center Pharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13Graz8010Austria
- Institute of ChemistryUniversity of GrazNAWI Graz, Heinrichstrasse 28Graz8010Austria
| | - Thomas G. Tampone
- Boehringer Ingelheim Pharmaceuticals, Inc900 Ridgebury RoadRidgefieldCT06877USA
| | - Vidhyadhar Manee
- Boehringer Ingelheim Pharmaceuticals, Inc900 Ridgebury RoadRidgefieldCT06877USA
| | - Frederic G. Buono
- Boehringer Ingelheim Pharmaceuticals, Inc900 Ridgebury RoadRidgefieldCT06877USA
| | - Jason D. Williams
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research Center Pharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13Graz8010Austria
- Institute of ChemistryUniversity of GrazNAWI Graz, Heinrichstrasse 28Graz8010Austria
| | - C. Oliver Kappe
- Center for Continuous Flow Synthesis and Processing (CC FLOW)Research Center Pharmaceutical Engineering GmbH (RCPE)Inffeldgasse 13Graz8010Austria
- Institute of ChemistryUniversity of GrazNAWI Graz, Heinrichstrasse 28Graz8010Austria
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3
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Gao J, Liu Z, Guo X, Wu L, Chen Z, Yang K. 1,1,1,3,3,3-Hexafluoro-2-Propanol-Promoted Friedel-Crafts Reaction: Metal-Free Synthesis of C3-Difluoromethyl Carbinol-Containing Imidazo[1,2- a]pyridines at Room Temperature. Molecules 2023; 28:7522. [PMID: 38005245 PMCID: PMC10672982 DOI: 10.3390/molecules28227522] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Revised: 11/06/2023] [Accepted: 11/08/2023] [Indexed: 11/26/2023] Open
Abstract
A facile and efficient method has been developed for the synthesis of C3-difluoromethyl carbinol-containing imidazo[1,2-a]pyridines at room temperature via the HFIP-promoted Friedel-Crafts reaction of difluoroacetaldehyde ethyl hemiacetal and imidazo[1,2-a]pyridines. This strategy could be applied to the direct C(sp2)-H hydroxydifluoromethylation of imidazo[1,2-a]pyridines and afford a series of novel difluoromethylated carbinols in good to satisfactory yields with 29 examples. Furthermore, gram-scale and synthetic transformation experiments have also been achieved, demonstrating its potential applicable value in organic synthesis. This green protocol has several advantages, including being transition metal- and oxidant-free, being carried out at room temperature, having high efficiency, and having a wide substrate scope.
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Affiliation(s)
| | | | | | | | - Zhixi Chen
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (J.G.); (Z.L.); (X.G.); (L.W.)
| | - Kai Yang
- College of Pharmacy, Gannan Medical University, Ganzhou 341000, China; (J.G.); (Z.L.); (X.G.); (L.W.)
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4
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Kim MP, Cho H, Kayal S, Jeon MH, Seo JK, Son J, Jeong J, Hong SY, Chun JH. Direct 18F-Fluorosulfurylation of Phenols and Amines Using an [ 18F]FSO 2+ Transfer Agent Generated In Situ. J Org Chem 2023; 88:6263-6273. [PMID: 37032486 DOI: 10.1021/acs.joc.3c00512] [Citation(s) in RCA: 6] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2023]
Abstract
We report the direct radiofluorosulfurylation method for the synthesis of 18F-labeled fluorosulfuryl derivatives from phenols and amines using an [18F]FSO2+ transfer agent generated in situ. Nucleophilic radiofluorination is achieved even in a hydrous organic medium, obviating the need for azeotropic drying and the use of cryptands. This unprecedented, operationally simple isotopic functionalization facilitates the reliable production of potential radiotracers for positron emission tomography, rendering facile access to SuFEx radiochemistry.
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Affiliation(s)
- Min Pyeong Kim
- Department of Chemistry and Department of Chemical Engineering, Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Hojin Cho
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Swatilekha Kayal
- Department of Chemistry and Department of Chemical Engineering, Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Min Ho Jeon
- Department of Chemistry and Department of Chemical Engineering, Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jeong Kon Seo
- UNIST Central Research Facility, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Jeongmin Son
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jinsil Jeong
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Sung You Hong
- Department of Chemistry and Department of Chemical Engineering, Graduate School of Carbon Neutrality, Ulsan National Institute of Science and Technology (UNIST), Ulsan 44919, Republic of Korea
| | - Joong-Hyun Chun
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
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5
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Salinas-Torres A, Jiménez E, Becerra D, Martínez JJ, Rojas H, Castillo JC, Macías MA. Synthesis, anticancer evaluation, thermal and X-ray crystallographic analysis of 2-oxo-2H-chromen-7-yl 4-chlorobenzoate using a conductively heated sealed-vessel reactor. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134414] [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]
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6
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Rostán S, Alvarez N, Veiga N, Otero L, Mahler G. New preparation protocols for coumarin-thiosemicarbazone hybrids: Solid state characterization, and in silico/NMR studies of the Z/E isomerization equilibria in solution. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.131980] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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7
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de la Sovera V, López GV, Porcal W. Synthetic study of 5‐hydroxymethylfurfural in Groebke‐Blackburn‐Bienaymé reaction. European J Org Chem 2022. [DOI: 10.1002/ejoc.202101369] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Victoria de la Sovera
- Universidad de la Republica Facultad de Quimica Organic Chemistry Department URUGUAY
| | - Gloria V. López
- Universidad de la República Facultad de Química Organic Chemistry Department Avda. Gral. Flores 2124Uruguay 11800 Montevideo URUGUAY
| | - Williams Porcal
- Universidad de la Republica Facultad de Química Organic Chemistry department Avda. Gral. Flores 2124Montevideo 11800 Montevideo URUGUAY
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8
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Lasányi D, Máth D, Tolnai GL. Synthesis and Use of Bicyclo[1.1.1]pentylaldehyde Building Blocks. J Org Chem 2022; 87:2393-2401. [DOI: 10.1021/acs.joc.1c02267] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Dániel Lasányi
- Institute of Chemistry, Eotvos Lorand University, Pazmany P. stny. 1/a, Budapest H1117, Hungary
| | - Dániel Máth
- Institute of Chemistry, Eotvos Lorand University, Pazmany P. stny. 1/a, Budapest H1117, Hungary
| | - Gergely L. Tolnai
- Institute of Chemistry, Eotvos Lorand University, Pazmany P. stny. 1/a, Budapest H1117, Hungary
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9
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Yang K, Chen ZX, Zhou YJ, Chen Q, Yu SW, Luo SH, Wang ZY. Simple inorganic base promoted polycyclic construction using mucohalic acid as a C 3 synthon: synthesis and AIE probe application of benzo[4,5]imidazo[1,2- a]pyridines. Org Chem Front 2022. [DOI: 10.1039/d1qo01753e] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Using mucohalic acid as C3 synthon via a transition metal-free multicomponent reaction, an eco-friendly protocol to synthesize C1-functionalized benzo[4,5]imidazo[1,2-a]pyridines which can be applied as fluorescence probe for picric acid is described.
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Affiliation(s)
- Kai Yang
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou 510006, P. R. China
- College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Zhi-Xi Chen
- College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Yong-Jun Zhou
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou 510006, P. R. China
| | - Qi Chen
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou 510006, P. R. China
| | - Shi-Wei Yu
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou 510006, P. R. China
| | - Shi-He Luo
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou 510006, P. R. China
| | - Zhao-Yang Wang
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, GDMPA Key Laboratory for Process Control and Quality Evaluation of Chiral Pharmaceuticals, Guangzhou 510006, P. R. China
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10
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Ultrafast synthesis of HKUST-1 nanoparticles by solvothermal method: Properties and possible applications. Polyhedron 2021. [DOI: 10.1016/j.poly.2021.115517] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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11
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Yang K, Luo SH, Chen SH, Cao XY, Zhou YJ, Lin YL, Huo YP, Wang ZY. Simple inorganic base promoted C-N and C-C formation: synthesis of benzo[4,5]imidazo[1,2- a]pyridines as functional AIEgens used for detecting picric acid. Org Biomol Chem 2021; 19:8133-8139. [PMID: 34545907 DOI: 10.1039/d1ob01424b] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Metal-free catalyzed intermolecular tandem Michael addition/cyclization has been developed for the synthesis of benzo[4,5]imidazo[1,2-a]pyridines from α-bromocinnamaldehyde and 2-substituted benzimidazoles. The reaction promoted by a simple inorganic base displays moderate to good yields and good functional group tolerance. The optical properties of some typical products have been investigated. We found that, due to the presence of the benzene ring at the C1-position of benzo[4,5]imidazo[1,2-a]pyridines which restricts intramolecular motion, as a new type of aggregation-induced emission (AIE) luminogen (AIEgen), they show very good solid-state fluorescence with quantum yields up to 88.80%. Importantly, the AIE performance of compound 3b can be useful to detect the nitroaromatic explosive picric acid (PA) with a detection limit and quenching constant of 42.5 nM and 7.27 × 104 M-M, respectively.
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Affiliation(s)
- Kai Yang
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China. .,College of pharmacy, Gannan Medical University, Ganzhou 341000, P. R. China
| | - Shi-He Luo
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Si-Hong Chen
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Xi-Ying Cao
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Yong-Jun Zhou
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Yan-Lan Lin
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
| | - Yan-Ping Huo
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, 510006, P. R. China.
| | - Zhao-Yang Wang
- School of Chemistry, South China Normal University, Key Laboratory of Theoretical Chemistry of Environment, Ministry of Education, Guangzhou Key Laboratory of Analytical Chemistry for Biomedicine, Guangzhou 510006, P. R. China.
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12
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Rapid Synthesis of Asymmetric Methyl-Alkyl Carbonates Catalyzed by α-KMgPO4 in a Sealed-Vessel Reactor Monowave 50. Catalysts 2021. [DOI: 10.3390/catal11040499] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Dimethyl-carbonate (DMC) is a green carboxymethylation agent for synthesis of the versatile long-chain alkyl carbonates through base-catalyzed transesterification with aliphatic alcohols. Herein, we demonstrated the facile preparation of a novel heterogeneous base catalyst α-KMgPO4 using commercially cheap metal salts via hydrothermal-calcination procedure. The combination of temperature programmed desorption (TPD) and FTIR measurements with CO2 pre-adsorbed revealed the presence of weak and medium base sites on α-KMgPO4. Furthermore, α-KMgPO4 catalyzed transesterification of DMC and n-octanol was performed in a sealed-vessel reactor (Monowave 50). The results show that the reaction was completed in only 10 min with the 97.5% conversion of n-octanol and >99% selectivity to asymmetric methyl-octyl carbonate under the optimal conditions. Additionally, the possible catalytic mechanism is proposed. As an extended contribution, the tribology performance of the asymmetric methyl-alkyl carbonates was further evaluated.
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13
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Nickel-Fe3O4 Magnetic Nanoparticles Supported on Multiwalled Carbon Nanotubes: Effective Catalyst in Suzuki Cross Coupling Reactions. Catalysts 2021. [DOI: 10.3390/catal11040495] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023] Open
Abstract
Nickel-Fe3O4 nanoparticles supported on multi-walled carbon nanotubes (Ni-Fe3O4/MWCNTs) were synthesized by mechanical grinding of a sample of nickel salt, Fe3O4 and MWCNTs using a ball-mill mixer. The preparation method allows for bulk production of Ni-Fe3O4 nanoparticles at room temperature without the necessity of any solvent or chemical reagent. The nanoparticles prepared by this method exhibit small particles size of 5–8 nm with uniform dispersion of nickel nanoparticles on the surface of multi-walled carbon nanotubes. The Ni-Fe3O4/MWCNTs demonstrated remarkable catalytic activity for Suzuki cross coupling reactions of functionalized aryl halides and phenylboronic acids with excellent turnover number and turnover frequency (e.g., 76,000 h−1) using Monowave 50 conventional heating reactor at 120 °C within a very short reaction time of 15 min. The catalyst is air-stable and exhibits easy removal from the reaction mixture due to its magnetic properties, recyclability with no loss of activity, and significantly better performance than the other well-known commercial nickel catalyst. The Ni-Fe3O4/MWCNTs nanoparticles were fully characterized by a variety of spectroscopic techniques including X-ray Diffraction (XRD), Transmission Electron Microscopy (TEM) and X-ray Photoelectron Spectroscopy (XPS). Since nickel offers similar properties to other more expensive transition metals including the most widely used palladium counterpart in cross coupling catalysis, this work demonstrates a promising lower-cost, air-moisture stable and efficient alternative catalyst based on nickel nanoparticles for cross coupling reactions.
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14
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Reynard G, Mayrand H, Lebel H. Etherification of phenols by amines via transient diazonium intermediates. CAN J CHEM 2020. [DOI: 10.1139/cjc-2020-0028] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
In this paper, the synthesis of alkyl aryl ethers from electron poor phenols and amines, using 1,3-propanedinitrite, is described. Due to the mild conditions, functionalized primary, secondary, and tertiary alkyl groups were successfully introduced, denoting a highly tolerant process that allows for unprotected alcohols and acetals. The reaction is thought to proceed through the formation of a diazonium intermediate that undergoes subsequent SN2 or SN1 reactions.
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Affiliation(s)
- Guillaume Reynard
- Département de chimie and Centre in Green Chemistry and Catalysis (CGCC), Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie and Centre in Green Chemistry and Catalysis (CGCC), Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Hugo Mayrand
- Département de chimie and Centre in Green Chemistry and Catalysis (CGCC), Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie and Centre in Green Chemistry and Catalysis (CGCC), Université de Montréal, Montréal, QC H3C 3J7, Canada
| | - Hélène Lebel
- Département de chimie and Centre in Green Chemistry and Catalysis (CGCC), Université de Montréal, Montréal, QC H3C 3J7, Canada
- Département de chimie and Centre in Green Chemistry and Catalysis (CGCC), Université de Montréal, Montréal, QC H3C 3J7, Canada
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15
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Laali KK, Zwarycz AT, Beck N, Borosky GL, Nukaya M, Kennedy GD. Curcumin Conjugates of Non-steroidal Anti-Inflammatory Drugs: Synthesis, Structures, Anti-proliferative Assays, Computational Docking, and Inflammatory Response. ChemistryOpen 2020; 9:822-834. [PMID: 32802728 PMCID: PMC7425154 DOI: 10.1002/open.202000173] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2020] [Revised: 07/13/2020] [Indexed: 12/26/2022] Open
Abstract
In an effort to combine the anti-proliferative effect of CUR-BF2 and CUR compounds with anti-inflammatory benefits of non-steroidal anti-inflammatory drugs (NSAIDs), a library of the bis- and mono-NSAID/CUR-BF2 and NSAID/CUR conjugates were synthesized by coupling flufenamic acid, flurbiprofen, naproxen, indomethacin, and ibuprofen to diversely substituted hydroxy-benzaldehydes via an ester linkage, and by subsequent reaction with acetylacetone-BF2 to form the bis- and the mono-NSAID/CUR-BF2 adducts. Since conversion to NSAID/CUR by the previously developed decomplexation protocol showed limited success, a set of NSAID/CUR conjugates were independently prepared by directly coupling the NSAIDs with parent curcumin. The bis-NSAID/CUR-BF2 and bis-NSAID-CUR hybrids exhibited low cytotoxicity in NCI-60 assay, and in independent cell viability assay on colorectal cancer (CRC) cells (HCT116, HT29, DLD-1, RKO, SW837, CaCo2) and in normal CR cells (CCD841CoN). By contrast, the mono-naproxin and mono-flurbiprofen CUR-BF2 adducts exhibited remarkable anti-proliferative and apoptopic activity in NCI-60 assay most notably against HCT-116 (colon), OVCAR-3 (ovarian), and ACHN (renal) cells. Computational molecular docking calculations showed favorable binding energies to HER2, VEGFR2, BRAF, and Bcl-2 as well as to COX-1 and COX-2, which in several cases exceeded known inhibitors. The main interactions between the ligands and the proteins were hydrophobic, although several hydrogen bonds were also observed. A sub-set of six compounds that had exhibited little or no cytotoxicity were tested for their anti-inflammatory response with THP-1 human macrophages in comparison to parent NSAIDs or parent curcumin.
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Affiliation(s)
- Kenneth K. Laali
- Department of ChemistryUniversity of North Florida1 UNF DriveJacksonville, FL32224USA
| | - Angela T. Zwarycz
- Department of ChemistryUniversity of North Florida1 UNF DriveJacksonville, FL32224USA
| | - Nicholas Beck
- Department of ChemistryUniversity of North Florida1 UNF DriveJacksonville, FL32224USA
| | - Gabriela L. Borosky
- INFIQC, CONICET and Departamento de Química Teórica y ComputacionalFacultad de Ciencias QuímicasUniversidad Nacional de CórdobaCiudad UniversitariaCórdoba5000Argentina
| | - Manabu Nukaya
- Department of SurgeryUniversity of Alabama-Birmingham School of MedicineBirminghamAL 35294-0016USA
| | - Gregory D. Kennedy
- Department of SurgeryUniversity of Alabama-Birmingham School of MedicineBirminghamAL 35294-0016USA
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16
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Dediazoniative functionalization of chromen-4-one and chromen-2-one diazonium-BF4 salts in BMIM-ILs. direct access to the F, I, OSO(CF3) NTf, and N(Tf)2 derivatives, and facile synthesis of chromenone azo-dyes by coupling to activated arenes. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152179] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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17
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Metal Chlorides Grafted on SAPO-5 (MClx/SAPO-5) as Reusable and Superior Catalysts for Acylation of 2-Methylfuran Under Non-Microwave Instant Heating Condition. Processes (Basel) 2020. [DOI: 10.3390/pr8050603] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Highly active metal chlorides grafted on silicoaluminophosphate number 5, MClx/SAPO-5 (M = Cu, Co, Sn, Fe and Zn) catalysts via simple grafting of respective metal chlorides (MClx) onto SAPO-5 are reported. The study shows that thermochemical treatment after grafting is essential to ensure the formation of chemical bondings between MClx and SAPO-5. In addition, the microscopy, XRD and nitrogen adsorption analyses reveal the homogeneous distribution of MClx species on the SAPO-5 surface. Furthermore, the elemental microanalysis confirms the formation of Si–O–M covalent bonds in ZnClx/SAPO-5, SnClx/SAPO-5 and FeClx/SAPO-5 whereas only dative bondings are formed in CoClx/SAPO-5 and CuClx/SAPO-5. The acidity of MClx/SAPO-5 is also affected by the type of metal chloride grafted. Thus, their catalytic behavior is evaluated in the acid-catalyzed acylation of 2-methylfuran under novel non-microwave instant heating conditions (90–110 °C, 0–20 min). ZnClx/SAPO-5, which has the largest amount of acidity (mainly Lewis acid sites), exhibits the best catalytic performance (94.5% conversion, 100% selective to 2-acetyl-5-methylfuran) among the MClx/SAPO-5 solids. Furthermore, the MClx/SAPO-5 solids, particularly SnClx/SAPO-5, FeClx/SAPO-5 and ZnClx/SAPO-5, also show more superior catalytic performance than common homogeneous acid catalysts (H2SO4, HNO3, CH3COOH, FeCl3, ZnCl2) with higher reactant conversion and catalyst reusability, thus offering a promising alternative for the replacement of hazardous homogeneous catalysts in Friedel–Crafts reactions.
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18
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Mangin LP, Zargarian D. C–H Nickelation of Naphthyl Phosphinites: Electronic and Steric Limitations, Regioselectivity, and Tandem C–P Functionalization. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00660] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Loïc P. Mangin
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
| | - Davit Zargarian
- Département de Chimie, Université de Montréal, Montréal, Québec H3C 3J7, Canada
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19
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Bouarfa S, Graßl S, Ivanova M, Langlais T, Bentabed-Ababsa G, Lassagne F, Erb W, Roisnel T, Dorcet V, Knochel P, Mongin F. Copper- and Cobalt-Catalyzed Syntheses of Thiophene-Based Tertiary Amines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900276] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Salima Bouarfa
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
- Laboratoire de Synthèse Organique Appliquée; Faculté des Sciences Exactes et Appliquées; Université Oran1 Ahmed Ben Bella; BP 1524 El M′Naouer 31000 Oran Algeria
| | - Simon Graßl
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Maria Ivanova
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Timothy Langlais
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Ghenia Bentabed-Ababsa
- Laboratoire de Synthèse Organique Appliquée; Faculté des Sciences Exactes et Appliquées; Université Oran1 Ahmed Ben Bella; BP 1524 El M′Naouer 31000 Oran Algeria
| | - Frédéric Lassagne
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - William Erb
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - Thierry Roisnel
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - Vincent Dorcet
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
| | - Paul Knochel
- Department Chemie; Ludwig-Maximilians-Universität München; Butenandtstrasse 5-13, Haus F 81377 München Germany
| | - Florence Mongin
- CNRS; ISCR (Institut des Sciences Chimiques de Rennes) - UMR 6226; Univ Rennes; 35000 Rennes France
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20
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Laali KK, Zwarycz AT, Bunge SD, Borosky GL, Nukaya M, Kennedy GD. Deuterated Curcuminoids: Synthesis, Structures, Computational/Docking and Comparative Cell Viability Assays against Colorectal Cancer. ChemMedChem 2019; 14:1173-1184. [DOI: 10.1002/cmdc.201900179] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2019] [Indexed: 12/12/2022]
Affiliation(s)
- Kenneth K. Laali
- Department of ChemistryUniversity of North Florida 1 UNF Drive Jacksonville FL 32224 USA
| | - Angela T. Zwarycz
- Department of ChemistryUniversity of North Florida 1 UNF Drive Jacksonville FL 32224 USA
| | - Scott D. Bunge
- Department of Chemistry and BiochemistryKent State University Kent OH 44242 USA
| | - Gabriela L. Borosky
- INFIQCCONICET and Departamento de Química Teórica y ComputacionalFacultad de Ciencias QuímicasUniversidad Nacional de Córdoba Ciudad Universitaria Córdoba 5000 Argentina
| | - Manabu Nukaya
- Department of SurgeryUniversity of Alabama–Birmingham School of Medicine Birmingham AL 35294-0016 USA
| | - Gregory D. Kennedy
- Department of SurgeryUniversity of Alabama–Birmingham School of Medicine Birmingham AL 35294-0016 USA
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21
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Kwon YD, Son J, Chun JH. Chemoselective Radiosyntheses of Electron-Rich [18F]Fluoroarenes from Aryl(2,4,6-trimethoxyphenyl)iodonium Tosylates. J Org Chem 2019; 84:3678-3686. [DOI: 10.1021/acs.joc.9b00019] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Young-Do Kwon
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
| | - Jeongmin Son
- Department of Nuclear Medicine, Severance Hospital, Yonsei University Health System, Seoul 03722, Republic of Korea
| | - Joong-Hyun Chun
- Department of Nuclear Medicine, Yonsei University College of Medicine, Seoul 03722, Republic of Korea
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22
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Kappe CO. My Twenty Years in Microwave Chemistry: From Kitchen Ovens to Microwaves that aren't Microwaves. CHEM REC 2019; 19:15-39. [PMID: 29905399 PMCID: PMC6391988 DOI: 10.1002/tcr.201800045] [Citation(s) in RCA: 38] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2018] [Accepted: 05/30/2018] [Indexed: 12/15/2022]
Abstract
This Personal Account describes the author's involvement in the field of microwave-assisted organic synthesis (MAOS) from the late 1990's starting out with kitchen microwave ovens right through to the development of a reactor in 2016 that - although not using microwave technology - in many ways mimics the performance of a modern laboratory microwave. The reader is taken along a journey that has spanned two decades of intense research on various aspects of microwave chemistry, and, at the same time, was intimately linked to key innovations regarding equipment design and development. A "behind the scenes" approach is taken in this article to share - from a very personal point of view - how specific projects and research ideas were conceived and developed in my research group, and how in general the field of microwave chemistry has progressed in the last two decades.
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Affiliation(s)
- C. Oliver Kappe
- Institute of ChemistryUniversity of GrazHeinrichstrasse 28, A-8010 GrazAustria
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23
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Gan Z, Tian Q, Shang S, Luo W, Dai Z, Wang H, Li D, Wang X, Yuan J. Imidazolium chloride-catalyzed synthesis of benzimidazoles and 2-substituted benzimidazoles from o-phenylenediamines and DMF derivatives. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.11.014] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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24
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Kotha S, Todeti S, Aswar VR. Design and synthesis of C 3-symmetric molecules bearing propellane moieties via cyclotrimerization and a ring-closing metathesis sequence. Beilstein J Org Chem 2018; 14:2537-2544. [PMID: 30410614 PMCID: PMC6204777 DOI: 10.3762/bjoc.14.230] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 09/14/2018] [Indexed: 02/03/2023] Open
Abstract
We have developed an efficient synthetic strategy to assemble C 3-symmetric molecules containing propellane moieties as end groups and a benzene ring as a central core. The synthesis of these C 3-symmetric molecules involves simple starting materials. Our approach to C 3-symmetric compounds relies on a Diels-Alder reaction, cyclotrimerization and ring-closing metathesis as key steps.
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Affiliation(s)
- Sambasivarao Kotha
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Saidulu Todeti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
| | - Vikas R Aswar
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India
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25
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Beau JM, Boyer FD, Norsikian S, Urban D, Vauzeilles B, Xolin A. Glycosylation: The Direct Synthesis of 2-Acetamido-2-Deoxy-Sugar Glycosides. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800735] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Jean-Marie Beau
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud, CNRS, Université Paris-Saclay; 91405 Orsay France
| | - François-Didier Boyer
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
- Institut Jean-Pierre Bourgin, INRA; AgroParisTech, CNRS; Université Paris-Saclay; 78000 Versailles France
| | - Stéphanie Norsikian
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Dominique Urban
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud, CNRS, Université Paris-Saclay; 91405 Orsay France
| | - Boris Vauzeilles
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud, CNRS, Université Paris-Saclay; 91405 Orsay France
| | - Amandine Xolin
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud, Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
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26
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Claramunt RM, Santa María D, Alkorta I, Elguero J. The Structure ofN-phenyl-pyrazoles and Indazoles: Mononitro, Dinitro, and Trinitro Derivatives. J Heterocycl Chem 2017. [DOI: 10.1002/jhet.3026] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Rosa M. Claramunt
- Departamento de Química Orgánica y Bio-Orgánica, Facultad de Ciencias; UNED; Paseo Senda del Rey, 9 28040 Madrid Spain
| | - Dolores Santa María
- Departamento de Química Orgánica y Bio-Orgánica, Facultad de Ciencias; UNED; Paseo Senda del Rey, 9 28040 Madrid Spain
| | - Ibon Alkorta
- Instituto de Química Médica, Centro de Química Orgánica “Manuel Lora-Tamayo”; CSIC; Juan de la Cierva, 3 28006 Madrid Spain
| | - José Elguero
- Instituto de Química Médica, Centro de Química Orgánica “Manuel Lora-Tamayo”; CSIC; Juan de la Cierva, 3 28006 Madrid Spain
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27
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Frem D, Urban D, Norsikian S, Beau JM. From Chitin to α-Glycosides of N
-Acetylglucosamine Using Catalytic Copper Triflate in a Heated Sealed-Vessel Reactor. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700933] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Dany Frem
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud; CNRS; Université Paris-Saclay; 91405 Orsay France
| | - Dominique Urban
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud; CNRS; Université Paris-Saclay; 91405 Orsay France
| | - Stéphanie Norsikian
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
| | - Jean-Marie Beau
- Laboratoire de Synthèse de Biomolécules; Institut de Chimie Moléculaire et des Matériaux d'Orsay; Univ. Paris-Sud; CNRS; Université Paris-Saclay; 91405 Orsay France
- Institut de Chimie des Substances Naturelles; CNRS UPR2301; Univ. Paris-Sud; Université Paris-Saclay; 1 av. de la Terrasse 91198 Gif-sur-Yvette France
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28
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Adeyemi A, Bergman J, Brånalt J, Sävmarker J, Larhed M. Continuous Flow Synthesis under High-Temperature/High-Pressure Conditions Using a Resistively Heated Flow Reactor. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00063] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
| | - Joakim Bergman
- Department
of Medicinal Chemistry, Cardiovascular and Metabolic Diseases, Innovative
Medicines and Early Development Biotech Unit, AstraZeneca, Pepparedsleden
1, Mölndal, 431
83, Sweden
| | - Jonas Brånalt
- Department
of Medicinal Chemistry, Cardiovascular and Metabolic Diseases, Innovative
Medicines and Early Development Biotech Unit, AstraZeneca, Pepparedsleden
1, Mölndal, 431
83, Sweden
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