1
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Guo Q, Lai Z, Tian Z, Tang R, Ding T, Jiang X. Organocatalytic Enantioselective Chloroiminocyclization for the Synthesis of Imidazoline. Org Lett 2024; 26:5592-5596. [PMID: 38914478 DOI: 10.1021/acs.orglett.4c02057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
Imidazoline is an important scaffold in organic synthesis and a pharmacophore in medicinal chemistry. We apply basic imines as nucleophiles for the catalytic asymmetric chloroiminocyclization to furnish tetrasubstituted stereocenter-containing imidazolines in excellent yields and enantioselectivities. The reaction can be conducted in the polar solvent acetonitrile under concentrated reaction conditions.
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Affiliation(s)
- Qifeng Guo
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, and International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Jinan University College of Pharmacy, Guangzhou 510632, China
| | - Zhitao Lai
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, and International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Jinan University College of Pharmacy, Guangzhou 510632, China
| | - Zeng Tian
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, and International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Jinan University College of Pharmacy, Guangzhou 510632, China
| | - Ran Tang
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, and International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Jinan University College of Pharmacy, Guangzhou 510632, China
| | - Tengbo Ding
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, and International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Jinan University College of Pharmacy, Guangzhou 510632, China
| | - Xiaojian Jiang
- State Key Laboratory of Bioactive Molecules and Druggability Assessment, and International Cooperative Laboratory of Traditional Chinese Medicine Modernization and Innovative Drug Development of Chinese Ministry of Education (MOE), Jinan University College of Pharmacy, Guangzhou 510632, China
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2
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Peñas-Sanjuán A, Chica-Armenteros JJ, Cruz-Sánchez R, García-Gallarín C, Melguizo M. Sequential Nitrile Amidination-Reduction as a Straightforward Procedure to Selective Linear Polyamine Preparation. J Org Chem 2023; 88:17274-17283. [PMID: 38006401 PMCID: PMC10729039 DOI: 10.1021/acs.joc.3c02128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2023] [Revised: 11/10/2023] [Accepted: 11/15/2023] [Indexed: 11/27/2023]
Abstract
A straightforward strategy toward the efficient synthesis of linear saturated polyamines containing 1,2-diaminoethane and/or 1,3-diaminopropane fragments has been developed. The procedure is based on the chemistry of 5- and 6-membered cyclic amidines, including their efficient synthesis from nitrile precursors and subsequent chemoselective reductive-opening by a borane-dimethyl sulfide complex. This two-step procedure provides a robust methodology for the synthesis of linear polyamine skeletons under nonharsh conditions and free of using selective protective groups or tedious workups.
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Affiliation(s)
- Antonio Peñas-Sanjuán
- Departamento de Química Inorgánica
y Orgánica. Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain
| | - Jose J. Chica-Armenteros
- Departamento de Química Inorgánica
y Orgánica. Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain
| | - Rubén Cruz-Sánchez
- Departamento de Química Inorgánica
y Orgánica. Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain
| | - Celeste García-Gallarín
- Departamento de Química Inorgánica
y Orgánica. Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain
| | - Manuel Melguizo
- Departamento de Química Inorgánica
y Orgánica. Facultad de Ciencias Experimentales, Universidad de Jaén, 23071 Jaén, Spain
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3
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Villamil V, Vairoletti F, Tijman A, López G, Peixoto de Abreu Lima A, Saiz C, Iglesias C, Mahler G. Novel Kinetic Resolution of Thiazolo-Benzimidazolines Using MAO Enzymes. ACS OMEGA 2023; 8:42114-42125. [PMID: 38024698 PMCID: PMC10652373 DOI: 10.1021/acsomega.3c03223] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 10/06/2023] [Accepted: 10/10/2023] [Indexed: 12/01/2023]
Abstract
The kinetic resolution of racemic 1H,3H-thiazolo[3,4-a]benzimidazoline (TBIM) heterocycles was achieved using E. coli whole cells expressing the MAO-N D11 enzyme. Several cosolvents were screened using TBIM 2a as the substrate. DMF was the best cosolvent, affording the pure enantiomer (+)-2a in 44% yield, 94% ee. The stereochemistry of TBIM was predicted by means of ab initio calculations of optical rotation and circular dichroism spectra. The reaction scope was investigated for 11 substituted (±) TBIM using an optimized protocol. The best yield and % ee were obtained for the nonsubstituted 2a. Among the substituted compounds, the 5-substituted-TBIM showed better % ee than the 4-substituted one. The small electron donor group (Me) led to better % ee than the electron-withdrawing groups (-NO2 and -CO2Et), and the bulky naphthyl group was detrimental for the kinetic resolution. Docking experiments and molecular dynamics (MD) simulations were employed to further understand the interactions between MAO-N D11 and the thiazolo-benzimidazoline substrates. For 2a, the MD showed favorable positioning and binding energy for both enantiomers, thus suggesting that this kinetic resolution is influenced not only by the active site but also by the entry tunnel. This work constitutes the first report of the enzymatic kinetic resolution applied to TBIM heterocycles.
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Affiliation(s)
- Valentina Villamil
- Departamento
de Química Orgánica, Laboratorio de Quimica Farmaceutica,
Facultad de Quimica, Universidad de la República, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Franco Vairoletti
- Departamento
de Química Orgánica, Laboratorio de Quimica Farmaceutica,
Facultad de Quimica, Universidad de la República, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Programa
de Posgrado en Quimica, Universidad de la
República Uruguay, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Ariel Tijman
- Programa
de Posgrado en Quimica, Universidad de la
República Uruguay, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias, Laboratorio de Microbiología Molecular, Facultad
de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias y Departamento de Quimica Organica, Laboratorio de
Biocatalisis y Biotransformaciones, Facultad de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Gonzalo López
- Programa
de Posgrado en Quimica, Universidad de la
República Uruguay, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias, Laboratorio de Microbiología Molecular, Facultad
de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias y Departamento de Quimica Organica, Laboratorio de
Biocatalisis y Biotransformaciones, Facultad de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Alejandro Peixoto de Abreu Lima
- Departamento
de Química Orgánica, Laboratorio de Síntesis
Orgánica, Facultad de Quimica, Universidad
de la Republica, Gral
Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Cecilia Saiz
- Departamento
de Química Orgánica, Laboratorio de Quimica Farmaceutica,
Facultad de Quimica, Universidad de la República, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - César Iglesias
- Departamento
de Biociencias, Laboratorio de Microbiología Molecular, Facultad
de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
- Departamento
de Biociencias y Departamento de Quimica Organica, Laboratorio de
Biocatalisis y Biotransformaciones, Facultad de Quimica, Universidad de la Republica, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
| | - Graciela Mahler
- Departamento
de Química Orgánica, Laboratorio de Quimica Farmaceutica,
Facultad de Quimica, Universidad de la República, Gral Flores 2124, Montevideo, Montevideo 11800, Uruguay
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4
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Wang H, Niu W, He Y, Wei Y, Li X, Lin YW. Synthesis of CF 3-Containing 2-Imidazolines and Imidazoles via a Iodide-Promoted [3 + 2] Cyclization Reaction. J Org Chem 2023; 88:15282-15287. [PMID: 37824681 DOI: 10.1021/acs.joc.3c01768] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/14/2023]
Abstract
We report herein a general and effective system achieving cyclization of β-trifluoromethyl enones with amidines in the presence of 1,3-diiodo-5,5-dimethylhydantoin (DIH), which affords a range of trifluoromethylated 2-imidazolines in synthetically useful yields with good diastereoselectivities (up to 95% yield, up to 98:2 dr) and good functional group tolerance. Furthermore, the one-pot synthesis of trifluoromethylated imidazoles via sequential cyclization and oxidation is demonstrated. More significantly, the reaction mechanism was verified by ESI-MS studies of possible intermediates, and a reasonable reaction mechanism was proposed.
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Affiliation(s)
- Huamin Wang
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Wenjing Niu
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Yongjun He
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Yibo Wei
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Xianxian Li
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
| | - Ying-Wu Lin
- School of Chemistry and Chemical Engineering, University of South China, Hengyang421001,P. R. China
- Hengyang Medical College, University of South China, Hengyang 421001,P. R. China
- Laboratory of Protein Structure and Function, University of South China Medical School, Hengyang421001,P. R. China
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5
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Nakamura S, Kibe M, Takehara T, Suzuki T. Direct Catalytic Enantioselective Reaction of α-Isocyanoacetonitriles with Ketimines Using Cinchona Alkaloid Amide-Cu(II) Catalysts. Org Lett 2023; 25:1040-1044. [PMID: 36749377 DOI: 10.1021/acs.orglett.3c00259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
The first enantioselective reaction of α-isocyanoacetonitriles was developed. The reaction of various α-isocyanoacetonitriles with ketimines using cinchona alkaloid amide-Cu(II) catalysts afforded imidazolines with consecutive tetrasubstituted stereogenic carbon centers in good yields and high diastereo- and enantioselectivities. The stereoselectivity of the reaction is explained on the basis of the control experiment and density functional theory (DFT) calculations. The products were subsequently converted into chiral compounds. This process highlights the possible use of α-isocyanoacetonitriles for asymmetric and organic syntheses.
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Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Masato Kibe
- Department of Life Science and Applied Chemistry, Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa-ku, Nagoya 466-8555, Japan
| | - Tsunayoshi Takehara
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
| | - Takeyuki Suzuki
- The Institute of Scientific and Industrial Research, Osaka University, 8-1 Mihogaoka, Ibaraki-shi, Osaka 567-0047, Japan
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6
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Liu D, Liu ZR, Wang ZH, Ma C, Herbert S, Schirok H, Mei TS. Paired electrolysis-enabled nickel-catalyzed enantioselective reductive cross-coupling between α-chloroesters and aryl bromides. Nat Commun 2022; 13:7318. [PMID: 36443306 PMCID: PMC9705544 DOI: 10.1038/s41467-022-35073-z] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 11/17/2022] [Indexed: 11/29/2022] Open
Abstract
Electrochemical asymmetric catalysis has emerged as a sustainable and promising approach to the production of chiral compounds and the utilization of both the anode and cathode as working electrodes would provide a unique approach for organic synthesis. However, precise matching of the rate and electric potential of anodic oxidation and cathodic reduction make such idealized electrolysis difficult to achieve. Herein, asymmetric cross-coupling between α-chloroesters and aryl bromides is probed as a model reaction, wherein alkyl radicals are generated from the α-chloroesters through a sequential oxidative electron transfer process at the anode, while the nickel catalyst is reduced to a lower oxidation state at the cathode. Radical clock studies, cyclic voltammetry analysis, and electron paramagnetic resonance experiments support the synergistic involvement of anodic and cathodic redox events. This electrolytic method provides an alternative avenue for asymmetric catalysis that could find significant utility in organic synthesis.
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Affiliation(s)
- Dong Liu
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Zhao-Ran Liu
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Zhen-Hua Wang
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Cong Ma
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
| | - Simon Herbert
- grid.420044.60000 0004 0374 4101Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Hartmut Schirok
- grid.420044.60000 0004 0374 4101Pharmaceuticals, Research and Development, Bayer AG, 13353 Berlin, Germany
| | - Tian-Sheng Mei
- grid.422150.00000 0001 1015 4378State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, CAS, Shanghai, China
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7
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Garagan IA, Moskalik MY, Astakhova VV, Sterkhova IV, Vashchenko AV, Albanov AI, Shainyan BA. Regioselective Oxidative Halotriflamidation of Dienes and Trienes as a Route to New Amidines and Heterocycles. ChemistrySelect 2022. [DOI: 10.1002/slct.202202231] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ivan A. Garagan
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Mikhail Yu. Moskalik
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Vera V. Astakhova
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Irina V. Sterkhova
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Alexander V. Vashchenko
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Alexander I. Albanov
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
| | - Bagrat A. Shainyan
- A. E. Favorsky Irkutsk Institute of Chemistry Siberian Branch of the Russian Academy of Sciences 1 Favorsky Street 664033 Irkutsk Russian Federation
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8
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Poon L, Hum JR, Weiss RG. Effects of cyclic and acyclic amidine side-chains on the properties of polysiloxane ionomers constructed in situ from three uncharged components. SOFT MATTER 2022; 18:5502-5508. [PMID: 35848508 DOI: 10.1039/d2sm00382a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/15/2023]
Abstract
Ionomers, polysiloxanes with imidazolinium dithiocarbamate side chains, have been synthesized in situ from three uncharged components-a polysiloxane with imidazole side chains, CS2, and hexylamine or octadecylamine. Their structural and dynamic properties are compared over a temperature range of 0-50 °C with those of the analogous ionomers in which the polysiloxanes have amidinium side chains. The results, primarily from differential scanning calorimetry, powder X-ray diffraction measurements, and rheology show that the small structural (and smaller electronic) differences between the cyclic 5-membered ring imidazolinium and acyclic amidinium groups have marked effects on the bulk properties of the ionomers. These include their shear strengths and the manner in which the microcrystalline portions of the ionomers with dithiooctadecylcarbamate anions are packed. Thus, it is possible to finely tune the natures of the ionomers from one polysiloxane by changing temperature, the chain length of the alkylamine, and the nature of the base attached to the polysiloxane chain. Why these changes occur to the various properties is discussed.
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Affiliation(s)
- Louis Poon
- Department of Chemistry and Institute for Soft Matter Synthesis and Metrology, Georgetown University, Washington, DC 20057-1227, USA.
| | - Jacob R Hum
- Department of Chemistry and Institute for Soft Matter Synthesis and Metrology, Georgetown University, Washington, DC 20057-1227, USA.
| | - Richard G Weiss
- Department of Chemistry and Institute for Soft Matter Synthesis and Metrology, Georgetown University, Washington, DC 20057-1227, USA.
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9
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Yang M, Huang D, Wang K, Han T, Zhao P, Wang F, Wang J, Su Y, Hu Y. Silver-Catalyzed Synthesis of CF 3-Substituted 2-Imidazolines. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202111009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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10
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Recent development on COX-2 inhibitors as promising anti-inflammatory agents: The past 10 years. Acta Pharm Sin B 2022; 12:2790-2807. [PMID: 35755295 PMCID: PMC9214066 DOI: 10.1016/j.apsb.2022.01.002] [Citation(s) in RCA: 72] [Impact Index Per Article: 36.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2021] [Revised: 12/14/2021] [Accepted: 12/30/2021] [Indexed: 12/11/2022] Open
Abstract
Cyclooxygenases play a vital role in inflammation and are responsible for the production of prostaglandins. Two cyclooxygenases are described, the constitutive cyclooxygenase-1 and the inducible cyclooxygenase-2, for which the target inhibitors are the non-steroidal anti-inflammatory drugs (NSAIDs). Prostaglandins are a class of lipid compounds that mediate acute and chronic inflammation. NSAIDs are the most frequent choices for treatment of inflammation. Nevertheless, currently used anti-inflammatory drugs have become associated with a variety of adverse effects which lead to diminished output even market withdrawal. Recently, more studies have been carried out on searching novel selective COX-2 inhibitors with safety profiles. In this review, we highlight the various structural classes of organic and natural scaffolds with efficient COX-2 inhibitory activity reported during 2011–2021. It will be valuable for pharmaceutical scientists to read up on the current chemicals to pave the way for subsequent research.
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11
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George DE, Tepe JJ. Advances in Proteasome Enhancement by Small Molecules. Biomolecules 2021; 11:1789. [PMID: 34944433 PMCID: PMC8699248 DOI: 10.3390/biom11121789] [Citation(s) in RCA: 4] [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: 10/27/2021] [Revised: 11/23/2021] [Accepted: 11/26/2021] [Indexed: 01/11/2023] Open
Abstract
The proteasome system is a large and complex molecular machinery responsible for the degradation of misfolded, damaged, and redundant cellular proteins. When proteasome function is impaired, unwanted proteins accumulate, which can lead to several diseases including age-related and neurodegenerative diseases. Enhancing proteasome-mediated substrate degradation with small molecules may therefore be a valuable strategy for the treatment of various neurodegenerative diseases such as Parkinson's, Alzheimer's, and Huntington's diseases. In this review, we discuss the structure of proteasome and how proteasome's proteolytic activity is associated with aging and various neurodegenerative diseases. We also summarize various classes of compounds that are capable of enhancing, directly or indirectly, proteasome-mediated protein degradation.
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Affiliation(s)
| | - Jetze J. Tepe
- Department of Chemistry and Pharmacology & Toxicology, Michigan State University, East Lansing, MI 48824, USA;
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12
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13
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Ghanbari B, Kazemi Zangeneh F, Sastre G, Moeinian M, Marhabaie S, Taheri Rizi Z. Computational elucidation of the aging time effect on zeolite synthesis selectivity in the presence of water and diquaternary ammonium iodide. Phys Chem Chem Phys 2021; 23:21240-21248. [PMID: 34542551 DOI: 10.1039/d1cp01921j] [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
An example of zeolite selectivity (MFI → MOR) driven by synthesis aging time has been studied. Using N,N,N',N'-tetramethyl-N,N'-dipropyl-ethylenediammonium diiodide (TMDP) as an organic structure-directing agent (OSDA), the zeolite phases obtained at 2 h (MFI 97%), 8 h (MFI 84%, MOR 16%) and 24 h (MFI 43%, MOR 57%) have been characterized by powder X-ray diffraction. The results suggest that at intermediate aging time, namely 8 h and 24 h, the dominant phase (MFI) is displaced by MOR. Different techniques (FT-IR, Raman, 13C MAS NMR, TGA/DTG and HC microanalysis) have been employed to verify the OSDA integrity and occlusion inside the zeolite micropores as well as to quantify the water and OSDA loading. The 1H MAS NMR of the as-made occluded zeolite was compared with the spectra of TMDP and the recovered OSDA from the sample by extraction with water. The comparison indicated that TMDP was not structurally intact, indicating the chemical transformation of TMDP to imidazolinium homologues through the Hofmann degradation process. Furthermore, careful acidic breakdown of the aluminosilicate shell, covered on the zeolite samples by hydrofluoric acid, revealed that the remaining OSDA had been partially degraded to lower molecular weight ammonium salt, confirmed by 1H NMR and mass spectrometry measurements. A computational study was performed by using a force field based methodology, including accurate loading of water and OSDA in the zeolite (MFI and MOR) unit cells. The results show an important contribution of the presence of water. The samples with larger aging time (8 h and 24 h) incorporate less water and show partial TMDP degradation, whilst at the shortest aging time (2 h), there is a larger water content and TMDP remains intact. The larger accessible volume of MFI justifies that this is the dominant phase at short aging times (large water content) since it can accommodate a larger number of water molecules than MOR. The OSDA partial degradation also plays a role. At longer aging times the partial OSDA decomposition has been considered in the models by including TMDP + Imidaz, which is more stabilized by MOR, whilst at shorter aging times the only OSDA present, TMDP, is better stabilized by MFI.
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Affiliation(s)
- Bahram Ghanbari
- Department of Chemistry, Sharif University of Technology, PO Box 11155-3516, Tehran, Iran.
| | | | - German Sastre
- Instituto de Tecnologia Quimica U.P.V.-C.S.I.C., Universidad Politecnica de Valencia, Avenida Los Naranjos s/n, 46022 Valencia, Spain
| | - Maryam Moeinian
- Department of Chemistry, Sharif University of Technology, PO Box 11155-3516, Tehran, Iran.
| | - Sina Marhabaie
- Laboratoire des biomolécules, LBM, Département de chimie, École normale supérieure, PSL University, Sorbonne Université, CNRS, 75005 Paris, France
| | - Zahra Taheri Rizi
- Research Institute of Petroleum Industry, West Blvd. of Azadi Complex, Tehran 1485733111, Iran
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14
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Dabiri M, Lehi NF, Mohammadian R. Catalytic stereoselective Mannich-type reactions for construction of fluorinated compounds. Mol Divers 2021; 26:1267-1310. [PMID: 34228344 DOI: 10.1007/s11030-021-10235-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/20/2021] [Accepted: 05/13/2021] [Indexed: 10/20/2022]
Abstract
For its unique role in developing and designing new bioactive materials and healthcare products, fluoro-organic compounds have attracted remarkable interest. Along with ever-increasing demand for a wider availability of fluorine-containing structural units, a large diversity of methods has been introduced to incorporate fluorine atoms specially in a stereoselective fashion. Among them, catalytic Mannich reaction can proceed with a broad variety of reactants and open clear paths for the synthesis of versatile amine synthons in the synthesis of natural product and pharmaceutical molecules. This review provides an overview of the employment of catalytic asymmetric Mannich reactions in the synthesis of fluorine-containing amine compounds and highlights the conceivable distinct mechanisms.
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Affiliation(s)
- Minoo Dabiri
- Department of Organic Chemistry and Oil, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, 1983969411, Tehran, Islamic Republic of Iran.
| | - Noushin Farajinia Lehi
- Department of Organic Chemistry and Oil, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, 1983969411, Tehran, Islamic Republic of Iran
| | - Reza Mohammadian
- Department of Organic Chemistry and Oil, Faculty of Chemistry and Petroleum Sciences, Shahid Beheshti University, 1983969411, Tehran, Islamic Republic of Iran
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15
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Chen Z, Zhou Y, Hu T, Xiong HY, Zhang G. Merging Imidazolidines with a Trifluoromethylated Tetrasubstituted Carbon through Tungsten Catalyzed 1,3-Dipolar Cycloaddition. J Org Chem 2021; 86:7714-7724. [PMID: 34010567 DOI: 10.1021/acs.joc.1c00676] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An unprecedented 1,3-dipole cycloaddition between acyclic CF3-ketimines and N-benzyl azomethine ylide has been allowed by tungsten catalysis, furnishing a range of novel imidazolidines bearing a trifluoromethylated tetrasubstituted carbon center. This reaction appears as one of rare examples that challenging acyclic CF3-ketimines have been engaged in 1,3-cycloaddition reactions. The capability for gram-scale synthesis and variant derivatizations of cycloaddition adducts illustrates the synthetic potential of this approach. This protocol provides a facile access to a rapidly enlarging pool of motifs with a trifluoromethylated fully substituted carbon.
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Affiliation(s)
- Zhifang Chen
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, People's Republic of China
| | - Yufeng Zhou
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, People's Republic of China
| | - Tingjun Hu
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, People's Republic of China
| | - Heng-Ying Xiong
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, People's Republic of China
| | - Guangwu Zhang
- Institute of Organic Functional Molecules, College of Chemistry and Chemical Engineering, Henan University, Kaifeng, 475004, People's Republic of China
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16
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Luo J, Chen GS, Chen SJ, Li ZD, Liu YL. Catalytic Enantioselective Isocyanide-Based Reactions: Beyond Passerini and Ugi Multicomponent Reactions. Chemistry 2021; 27:6598-6619. [PMID: 32964538 DOI: 10.1002/chem.202003224] [Citation(s) in RCA: 38] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2020] [Indexed: 12/19/2022]
Abstract
The development of catalytic enantioselective isocyanide-based reactions is currently of great interest because the resulting products are valuable in organic synthesis, pharmacological chemistry, and materials science. This review assembles and comprehensively summarizes the recent achievements in this rapidly growing area according to the reaction types. Special attention is paid to the advantages, limitations, possible mechanisms, and synthetic applications of each reaction. In addition, a personal outlook on the opportunities for further exploration is given at the end.
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Affiliation(s)
- Jian Luo
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
| | - Guo-Shu Chen
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
| | - Shu-Jie Chen
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
| | - Zhao-Dong Li
- Department of Applied Chemistry, College of Materials and Energy, South China Agricultural University, Wushan Street five road No. 483, Guangzhou, 510642, P. R. China
| | - Yun-Lin Liu
- School of Chemistry and Chemical Engineering, Guangzhou University, 230 Wai Huan Xi Road, Guangzhou, 510006, P. R. China
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17
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Farooq S, Haq IU, Ullah N. Synthesis, characterization and biological evaluation of N-Mannich base derivatives of 2-phenyl-2-imidazoline as potential antioxidants, enzyme inhibitors, antimicrobials, cytotoxic and anti-inflammatory agents. ARAB J CHEM 2021. [DOI: 10.1016/j.arabjc.2021.103050] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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18
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Li J, Yu B, Lu Z. Chiral Imidazoline Ligands and Their Applications in
Metal‐Catalyzed
Asymmetric Synthesis
†. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000486] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jiajing Li
- Department of Chemistry, Zhejiang University Hangzhou Zhejiang 310058 China
| | - Bing Yu
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 China
| | - Zhan Lu
- Department of Chemistry, Zhejiang University Hangzhou Zhejiang 310058 China
- College of Chemistry, Zhengzhou University Zhengzhou Henan 450001 China
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19
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Coin G, Dubourdeaux P, Bayle PA, Lebrun C, Maldivi P, Latour JM. Imidazoline synthesis: mechanistic investigations show that Fe catalysts promote a new multicomponent redox reaction. Dalton Trans 2021; 50:6512-6519. [PMID: 33908990 DOI: 10.1039/d1dt00919b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
Multicomponent reactions are attracting strong interest because they contribute to develop more efficient synthetic chemistry. Understanding their mechanism at the molecular level is thus an important issue to optimize their operation. The development of integrated experimental and theoretical approaches has very recently emerged as most powerful to achieve this goal. In the wake of our recent investigation of amidine synthesis, we used this approach to explore how an Fe-catalyzed aziridination can lead to an imidazoline when run in acetonitrile. We report that the synthesis of imidazoline by combination of styrene, acetonitrile, an iron catalyst and a nitrene precursor occurs along a new kind of multicomponent reaction. The formation of imidazoline results from acetonitrile interception of a benzyl radical styrene aziridination intermediate within Fe coordination sphere, as opposed to classical nucleophilic opening of the aziridine by a Lewis acid. Comparison of this mechanism to that of amidine formation allows a rationalization of the modes of intermediates trapping by acetonitrile according to the oxidation state Fe active species. The molecular understanding of these processes may help to design other multicomponent reactions.
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Affiliation(s)
- Guillaume Coin
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - LCBM/pmb, F-38000 Grenoble, France. and Univ. Grenoble Alpes, CNRS, UMR 5250, DCM, F-38000 Grenoble, France
| | | | | | - Colette Lebrun
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - SyMMES, F-38000 Grenoble, France.
| | - Pascale Maldivi
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - SyMMES, F-38000 Grenoble, France.
| | - Jean-Marc Latour
- Univ. Grenoble Alpes, CEA, CNRS, IRIG - LCBM/pmb, F-38000 Grenoble, France.
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20
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Claraz A, Djian A, Masson G. Electrochemical tandem trifluoromethylation of allylamines/formal (3 + 2)-cycloaddition for the rapid access to CF3-containing imidazolines and oxazolidines. Org Chem Front 2021. [DOI: 10.1039/d0qo01307b] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A straightforward and environmentally friendly synthesis of CF3-containing imidazolines and oxazolidines has been developed through an electrochemical three-component reaction among allylamines, the Langlois reagent, and nitrile or carbonyl compounds.
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Affiliation(s)
- Aurélie Claraz
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Aurélie Djian
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles
- Université Paris Saclay
- CNRS
- UPR2301
- 91198 Gif-sur-Yvette cedex
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21
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Aneeja T, Radhika S, Neetha M, Anilkumar G. An Overview of the One-pot Synthesis of Imidazolines. CURR ORG CHEM 2020. [DOI: 10.2174/1385272824999201001153735] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
One-pot syntheses are a simple, efficient and easy methodology, which are widely
used for the synthesis of organic compounds. Imidazoline is a valuable heterocyclic moiety
used as a synthetic intermediate, chiral auxiliary, chiral catalyst and a ligand for asymmetric
catalysis. Imidazole is a fundamental unit of biomolecules that can be easily prepared from
imidazolines. The one-pot method is an impressive approach to synthesize organic compounds
as it minimizes the reaction time, separation procedures, and ecological impact. Many significant
one-pot methods such as N-bromosuccinimide mediated reaction, ring-opening of tetrahydrofuran,
triflic anhydrate mediated reaction, etc. were reported for imidazoline synthesis.
This review describes an overview of the one-pot synthesis of imidazolines and covers literature
up to 2020.
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Affiliation(s)
- Thaipparambil Aneeja
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Sankaran Radhika
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Mohan Neetha
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
| | - Gopinathan Anilkumar
- School of Chemical Sciences, Mahatma Gandhi University, Priyadarsini Hills P.O., Kottayam, Kerala, 686560, India
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22
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Yan J, Wang Y, Hou S, Shi L, Zhu X, Hao X, Song M. NCC Pincer Ni (II) Complexes Catalyzed Hydrophosphination of Nitroalkenes with Diphenylphosphine. Appl Organomet Chem 2020. [DOI: 10.1002/aoc.5954] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Jing Yan
- College of Chemistry Zhengzhou University No. 100 of Science Road Zhengzhou Henan 450001 P. R. China
| | - Yan‐Bing Wang
- College of Chemistry Zhengzhou University No. 100 of Science Road Zhengzhou Henan 450001 P. R. China
| | - Senyao Hou
- College of Chemistry Zhengzhou University No. 100 of Science Road Zhengzhou Henan 450001 P. R. China
| | - Linlin Shi
- College of Chemistry Zhengzhou University No. 100 of Science Road Zhengzhou Henan 450001 P. R. China
| | - Xinju Zhu
- College of Chemistry Zhengzhou University No. 100 of Science Road Zhengzhou Henan 450001 P. R. China
| | - Xin‐Qi Hao
- College of Chemistry Zhengzhou University No. 100 of Science Road Zhengzhou Henan 450001 P. R. China
| | - Mao‐Ping Song
- College of Chemistry Zhengzhou University No. 100 of Science Road Zhengzhou Henan 450001 P. R. China
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23
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Sprague DJ, Johnston JN. Substituted Imidazoline Synthesis: A Diastereo- and Enantioselective aza-Henry Route to a Human Proteasome Modulator. Org Lett 2020; 22:8496-8499. [PMID: 33054232 DOI: 10.1021/acs.orglett.0c03096] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The first enantio- and diastereoselective synthesis of Tepe's human proteasome modulator is described. Routes to this and other highly substituted chiral imidazolines generally produce racemic material. Key to the route disclosed here is a gram-scale anti-selective aza-Henry reaction of an α-alkyl α-nitro ester nucleophile, catalyzed by a Bis(Amidine) [BAM] chiral proton complex, delivering the key intermediate in high yield as a single stereoisomer. The adduct is reduced to the amino ester and converted to an imidazoline.
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Affiliation(s)
- Daniel J Sprague
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
| | - Jeffrey N Johnston
- Department of Chemistry and Vanderbilt Institute of Chemical Biology, Vanderbilt University, Nashville, Tennessee 37235, United States
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24
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Affiliation(s)
| | - Jetze J. Tepe
- Department of Chemistry Michigan State University East Lansing Michigan 48823
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25
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Zuo Q, Shi Z, Zhan F, Wang Z, Lin JS, Jiang Y. TfOH-catalyzed formal [3+2] cycloaddition of N-tosylaziridine dicarboxylates and nitriles: Synthesis of tetrafunctionalized 2-imidazolines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151576] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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26
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Synthesis of 2-imidazolines by co-grinding of N-tosylaziridines and nitriles. MENDELEEV COMMUNICATIONS 2020. [DOI: 10.1016/j.mencom.2020.03.019] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
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27
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Solomon MM, Umoren SA, Quraishi MA, Salman M. Myristic acid based imidazoline derivative as effective corrosion inhibitor for steel in 15% HCl medium. J Colloid Interface Sci 2019; 551:47-60. [DOI: 10.1016/j.jcis.2019.05.004] [Citation(s) in RCA: 92] [Impact Index Per Article: 18.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/08/2018] [Revised: 04/14/2019] [Accepted: 05/01/2019] [Indexed: 10/26/2022]
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28
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Zhu ZH, Li Y, Wang YB, Lan ZG, Zhu X, Hao XQ, Song MP. α-Alkylation of Nitriles with Alcohols Catalyzed by NNN′ Pincer Ru(II) Complexes Bearing Bipyridyl Imidazoline Ligands. Organometallics 2019. [DOI: 10.1021/acs.organomet.9b00146] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhi-Hui Zhu
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Yigao Li
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Yan-Bing Wang
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Zhi-Gang Lan
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xinju Zhu
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Xin-Qi Hao
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
| | - Mao-Ping Song
- College of Chemistry and Molecular Engineering, Zhengzhou University, No 100 of Science Road, Zhengzhou, Henan 450001, P. R. China
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29
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Li QQ, He PX, Zhang J, Zhang JD, Xin YM, Liu P, Wang YY, Li JL. Substituent changes in the salen ligands of Cu IINa I-complexes to induce various structures and catalytic activities towards 2-imidazolines from nitriles and 1,2-diaminopropane. Chem Commun (Camb) 2019; 55:4619-4622. [PMID: 30919878 DOI: 10.1039/c9cc00879a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Based on various comparable salen ligands, three synthesized CuIINaI-complexes present efficient catalytic activities for the coupling and cyclization reaction of 1,2-diaminopropane with nitriles towards 2-imidazolines. The catalytic results show that salen ligands with an electron-donating substituent and small steric hindrance improve the catalytic activity.
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Affiliation(s)
- Quan-Quan Li
- Key Laboratory of Synthetic and Natural Functional Molecule Chemistry of the Ministry of Education, Shaanxi Key Laboratory of Physico-Inorganic Chemistry, College of Chemistry and Materials Science, Northwest University, Xi'an 710127, P. R. China.
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30
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On the Reactivity of N-tert-Butyl-1,2-Diaminoethane: Synthesis of 1-tert-Butyl-2-Imidazoline, Formation of an Intramolecular Carbamate Salt from the Reaction with CO2, and Generation of a Hydroxyalkyl-Substituted Imidazolinium Salt. HETEROATOM CHEMISTRY 2019. [DOI: 10.1155/2019/1094173] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
N-tert-Butyl-1,2-diaminoethane was shown to react rapidly with atmospheric carbon dioxide to generate the zwitterionic ammonium carbamate salt CO2N(H)C2H4N(H)2tBu (1). Reaction of N-tert-butyl-1,2-diaminoethane with triethylorthoformate gave 1-tert-butyl-2-imidazoline (2) in 24% yield after fractional distillation, and the hydroxyalkyl-tethered imidazolinium salt [HOC(Me)2CH2NC2H4N(CH)tBu][Cl] (3) was synthesised from the sequential reaction of N-tert-butyl-1,2-diaminoethane with isobutylene epoxide, HCl, and triethylorthoformate.
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31
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Üstün E, Düşünceli SD, Özdemir I. Theoretical analysis of frontier orbitals, electronic transitions, and global reactivity descriptors of M(CO)4L2 type metal carbonyl complexes: a DFT/TDDFT study. Struct Chem 2018. [DOI: 10.1007/s11224-018-1231-0] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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32
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Sudharsan M, Suresh D. Synthesis and palladium(II) metal chemistry of thiazoline/imidazoline derived ligands: An efficient catalyst for cross-coupling reactions of arylboronic acids with acid chlorides and aryl halides. Inorganica Chim Acta 2018. [DOI: 10.1016/j.ica.2018.09.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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33
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Synthesis, antimicrobial activity, and molecular docking study of fluorine-substituted indole-based imidazolines. Med Chem Res 2018. [DOI: 10.1007/s00044-018-2177-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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34
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Çapan İ, Servi S. Synthesis of novel aza-heterocyclic derivatives from diester and diacid chlorides having the dibenzobarrelene skeleton. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1437449] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Affiliation(s)
- İrfan Çapan
- Department of Polymer Technology, Technical Sciences Vocational College, Gazi University, Ankara, Turkey
| | - Süleyman Servi
- Department of Chemistry, Faculty of Science, Fırat University, Elazığ, Turkey
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35
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Hu J, Li Z, Zhang X, Han Y, Liu Y, Zhao Y, Liu Y, Gong P. Palladium-Catalyzed Cyclization Reaction of Oxime Acetates and Aryl Iodides: Syntheses of 2-Imidazolines. Org Lett 2018; 20:2116-2119. [DOI: 10.1021/acs.orglett.8b00696] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Jinxing Hu
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, 103 Wenhua Road, Shenhe District, Shenyang 110016, People’s Republic of China
| | - Zefei Li
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, 103 Wenhua Road, Shenhe District, Shenyang 110016, People’s Republic of China
| | - Xian Zhang
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, 103 Wenhua Road, Shenhe District, Shenyang 110016, People’s Republic of China
| | - Yufei Han
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, 103 Wenhua Road, Shenhe District, Shenyang 110016, People’s Republic of China
| | - Yue Liu
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, 103 Wenhua Road, Shenhe District, Shenyang 110016, People’s Republic of China
| | - Yanfang Zhao
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, 103 Wenhua Road, Shenhe District, Shenyang 110016, People’s Republic of China
| | - Yajing Liu
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, 103 Wenhua Road, Shenhe District, Shenyang 110016, People’s Republic of China
| | - Ping Gong
- Key Laboratory of Structure-based Drug Design and Discovery (Shenyang Pharmaceutical University), Ministry of Education, 103 Wenhua Road, Shenhe District, Shenyang 110016, People’s Republic of China
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36
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Trulli L, Sciubba F, Fioravanti S. Chiral trans-carboxylic trifluoromethyl 2-imidazolines by a Ag2O-catalyzed Mannich-type reaction. Tetrahedron 2018. [DOI: 10.1016/j.tet.2017.12.029] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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37
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Zhang D, Liu R, Zhou X. Intramolecular alkene hydroamination and degradation of amidines: divergent behavior of rare earth metal amidinate intermediates. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01481g] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The methods for catalytic intramolecular alkene hydroamination and degradation of amidines have been established. Furthermore, a tandem reconstruction/cyclization of amidines has also been developed.
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Affiliation(s)
- Dexing Zhang
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai 200433
- China
| | - Ruiting Liu
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai 200433
- China
| | - Xigeng Zhou
- Department of Chemistry
- Shanghai Key Laboratory of Molecular Catalysis and Innovative Materials
- Fudan University
- Shanghai 200433
- China
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38
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Zhao MX, Dong ZW, Zhu GY, Zhao XL, Shi M. Diastereo- and enantioselective Mannich/cyclization cascade reaction of isocyanoacetates with cyclic sulfamide ketimines by cinchona alkaloid squaramide/AgOAc cooperative catalysis. Org Biomol Chem 2018; 16:4641-4649. [DOI: 10.1039/c8ob01090k] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This reaction provides facile access to a variety of optically active imidazoline-fused sulfahydantoin derivatives in excellent yields and good to excellent stereoselectivities.
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Affiliation(s)
- Mei-Xin Zhao
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Zhi-Wen Dong
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Guang-Yu Zhu
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
| | - Xiao-Li Zhao
- Department of Chemistry
- East China Normal University
- Shanghai
- China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals
- East China University of Science and Technology
- Shanghai 200237
- China
- State Key Laboratory of Organometallic Chemistry
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39
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Zheng JF, Hu XN, Xu Z, Cai DC, Shen TL, Huang PQ. Substrate-Controlled Chemoselective Reactions of Isocyanoacetates with Amides and Lactams. J Org Chem 2017; 82:9693-9703. [DOI: 10.1021/acs.joc.7b01768] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Jian-Feng Zheng
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Xiu-Ning Hu
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Zhen Xu
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Dong-Cheng Cai
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Tai-Long Shen
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
| | - Pei-Qiang Huang
- Department of Chemistry,
Fujian Provincial Key Laboratory of Chemical Biology, iChEM (Collaborative
Innovation Center of Chemistry for Energy Materials), College of Chemistry
and Chemical Engineering, Xiamen University, Xiamen, Fujian 361005, P. R. China
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40
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Fang G, Liu J, Fu J, Liu Q, Bi X. Silver-Catalyzed Cascade Reaction of β-Enaminones and Isocyanoacetates To Construct Functionalized Pyrroles. Org Lett 2017; 19:1346-1349. [DOI: 10.1021/acs.orglett.7b00201] [Citation(s) in RCA: 40] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Guichun Fang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Jianquan Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
- School
of Chemistry and Chemical Engineering, Jiangsu Key Laboratory of Green
Synthesis for Functional Materials, Jiangsu Normal University, Xuzhou 221116, China
| | - Junkai Fu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Qun Liu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
| | - Xihe Bi
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis, Department of Chemistry, Northeast Normal University, Changchun 130024, China
- State
Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, China
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41
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Le Phuong HA, Cseri L, Whitehead GFS, Garforth A, Budd P, Szekely G. Environmentally benign and diastereoselective synthesis of 2,4,5-trisubstituted-2-imidazolines. RSC Adv 2017. [DOI: 10.1039/c7ra11827a] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A one-pot, membrane-assisted synthesis of 2,4,5-trisubstituted-2-imidazolines was developed, and substituent effects, reaction kinetics and mechanism by DFT were studied.
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Affiliation(s)
- Hai Anh Le Phuong
- School of Chemical Engineering & Analytical Science
- The University of Manchester
- Manchester
- UK
| | - Levente Cseri
- School of Chemical Engineering & Analytical Science
- The University of Manchester
- Manchester
- UK
| | | | - Arthur Garforth
- School of Chemical Engineering & Analytical Science
- The University of Manchester
- Manchester
- UK
| | - Peter Budd
- School of Chemistry
- The University of Manchester
- Manchester
- UK
| | - Gyorgy Szekely
- School of Chemical Engineering & Analytical Science
- The University of Manchester
- Manchester
- UK
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42
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Üstün E, Demir S, Coşkun F, Kaloğlu M, Şahin O, Büyükgüngör O, Özdemir İ. A theoretical insight for solvent effect on myoglobin assay of W(CO)4L2 type novel complexes with DFT/TDDFT. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.07.002] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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43
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Ellsworth AA, Magyar CL, Hubbell GE, Theisen CC, Holmes D, Mosey RA. One-pot triflic anhydride-mediated synthesis of 1,2-disubstituted 2-imidazolines from N-(2-haloethyl)amides and amines. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.08.040] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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44
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New ligands for nickel catalysis from diverse pharmaceutical heterocycle libraries. Nat Chem 2016; 8:1126-1130. [PMID: 27874864 PMCID: PMC5123601 DOI: 10.1038/nchem.2587] [Citation(s) in RCA: 126] [Impact Index Per Article: 15.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2016] [Accepted: 06/30/2016] [Indexed: 12/22/2022]
Abstract
Ligands are essential for controlling the reactivity and selectivity of reactions catalysed by transition metals. Access to large phosphine ligand libraries has become an essential tool for the application of metal-catalysed reactions industrially, but these existing libraries are not well suited to new catalytic methods based on non-precious metals (for example, Ni, Cu and Fe). The development of the requisite nitrogen- and oxygen-based ligand libraries lags far behind that of the phosphines and the development of new libraries is anticipated to be time consuming. Here we show that this process can be dramatically accelerated by mining for new ligands in a typical pharmaceutical compound library that is rich in heterocycles. Using this approach, we were able to screen a structurally diverse set of compounds with minimal synthetic effort and identify several new ligand classes for nickel-catalysed cross-electrophile coupling. These new ligands gave improved yields for challenging cross-couplings of pharmaceutically relevant substrates compared with those of those of previously published ligands.
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45
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Govender T, Arvidsson PI, Maguire GEM, Kruger HG, Naicker T. Enantioselective Organocatalyzed Transformations of β-Ketoesters. Chem Rev 2016; 116:9375-437. [PMID: 27463615 DOI: 10.1021/acs.chemrev.6b00156] [Citation(s) in RCA: 92] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The β-ketoester structural motif continues to intrigue chemists with its electrophilic and nucleophilic sites. Proven to be a valuable tool within organic synthesis, natural product, and medicinal chemistry, reports on chiral β-ketoester molecular skeletons display a steady increase. With the reignition of organocatalysis in the past decade, asymmetric methods available for the synthesis of this structural unit has significantly expanded, making it one of the most exploited substrates for organocatalytic transformations. This review provides comprehensive information on the plethora of organocatalysts used in stereoselective organocatalyzed construction of β-ketoester-containing compounds.
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Affiliation(s)
- Thavendran Govender
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Per I Arvidsson
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa.,P. I. Arvidsson, Science for Life Laboratory, Drug Discovery and Development Platform and Division of Translational Medicine and Chemical Biology, Department of Medical Biochemistry and Biophysics, Karolinska Institutet SE-171 77 Stockholm, Sweden
| | - Glenn E M Maguire
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Hendrik G Kruger
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
| | - Tricia Naicker
- Catalysis and Peptide Research Unit, University of KwaZulu Natal , Durban, 4001, South Africa
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46
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Bauer JM, Frey W, Peters R. Dual Palladium(II)/Tertiary Amine Catalysis for Asymmetric Regioselective Rearrangements of Allylic Carbamates. Chemistry 2016; 22:5767-77. [PMID: 26990446 DOI: 10.1002/chem.201600138] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2016] [Indexed: 11/10/2022]
Abstract
The streamlined catalytic access to enantiopure allylic amines as valuable precursors towards chiral β- and γ-aminoalcohols as well as α- and β-aminoacids is desirable for industrial purposes. In this article an enantioselective method is described that transforms achiral allylic alcohols and N-tosylisocyanate in a single step into highly enantioenriched N-tosyl protected allylic amines via an allylic carbamate intermediate. The latter is likely to undergo a cyclisation-induced [3,3]-rearrangement catalysed by a planar chiral pentaphenylferrocene palladacycle in cooperation with a tertiary amine base. The otherwise often indispensable activation of palladacycle catalysts by a silver salt is not required in the present case and there is also no need for an inert gas atmosphere. To further improve the synthetic value, the rearrangement was used to form dimethylaminosulfonyl-protected allylic amines, which can be deprotected under non-reductive conditions.
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Affiliation(s)
- Johannes Moritz Bauer
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - Wolfgang Frey
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany
| | - René Peters
- Institut für Organische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569, Stuttgart, Germany.
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47
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Hao XQ, Shen MZ, Jian NG, Pang W, Shen XJ, Zhu X, Song MP. Synthesis of chiral S , N -thioimidazoline ligands for palladium-catalyzed asymmetric allylic alkylations. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.01.015] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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48
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Popov YV, Mokhov VM, Kalitina II. Colloid and nanosized catalysts in organic synthesis: XIII. Synthesis of 2-R-2-imidazolines catalyzed by copper and iron oxide nanoparticles. RUSS J GEN CHEM+ 2016. [DOI: 10.1134/s1070363216020122] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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49
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de la Campa R, Gammack Yamagata AD, Ortín I, Franchino A, Thompson AL, Odell B, Dixon DJ. Catalytic enantio- and diastereoselective Mannich reaction of α-substituted isocyanoacetates and ketimines. Chem Commun (Camb) 2016; 52:10632-5. [DOI: 10.1039/c6cc04132a] [Citation(s) in RCA: 50] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The highly diastereo- and enantioselective Mannich reaction/cyclisation of α-substituted isocyanoacetates and ketimines catalysed by silver acetate and a cinchona-derived amino phosphine is reported.
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Affiliation(s)
- Raquel de la Campa
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | | | - Irene Ortín
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Allegra Franchino
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Amber L. Thompson
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Barbara Odell
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
| | - Darren J. Dixon
- Chemistry Research Laboratory
- Department of Chemistry
- University of Oxford
- Oxford
- UK
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50
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Nakamura S, Yamaji R, Iwanaga M. Enantioselective construction of imidazolines having vicinal tetra-substituted stereocenters by direct Mannich reaction of α-substituted α-isocyanoacetates with ketimines. Chem Commun (Camb) 2016; 52:7462-5. [DOI: 10.1039/c6cc02911f] [Citation(s) in RCA: 47] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Enantioselective direct Mannich-type reaction of ketimines with α-substituted α-isocyanoacetates gave imidazolines having vicinal tetra-substituted stereocenters with high stereoselectivity.
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Affiliation(s)
- Shuichi Nakamura
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | - Ryota Yamaji
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
| | - Masaru Iwanaga
- Department of Life Science and Applied Chemistry
- Graduate School of Engineering
- Nagoya Institute of Technology
- Nagoya 466-8555
- Japan
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