1
|
Zhu N, Yao H, Zhang X, Bao H. Metal-catalyzed asymmetric reactions enabled by organic peroxides. Chem Soc Rev 2024; 53:2326-2349. [PMID: 38259195 DOI: 10.1039/d3cs00735a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2024]
Abstract
As a class of multifunctional reagents, organic peroxides play vital roles in the chemical industry, pharmaceutical synthesis and polymerization reactions. Metal-catalyzed asymmetric catalysis has emerged as one of the most straightforward and efficient strategies to construct enantioenriched molecules, and an increasing number of metal-catalyzed asymmetric reactions enabled by organic peroxides have been disclosed by researchers in recent years. Despite remarkable progress, the types of asymmetric reactions facilitated by organic peroxides remain limited and the catalysis systems need to be further broadened. To the best of our knowledge, there is still no review devoted to summarizing the reactions from this perspective. In this review, we will endeavor to highlight the advances in metal-catalyzed asymmetric reactions enabled by organic peroxides. We hope that this survey will summarize the functions of organic peroxides in catalytic reactions, improve the understanding of these compounds and inspire future developments in this area.
Collapse
Affiliation(s)
- Nengbo Zhu
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China.
| | - Huijie Yao
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China.
- Fujian College, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
| | - Xiyu Zhang
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China.
| | - Hongli Bao
- State Key Laboratory of Structural Chemistry, Key Laboratory of Coal to Ethylene Glycol and Its Related Technology, Center for Excellence in Molecular Synthesis, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China.
- Fujian College, University of Chinese Academy of Sciences, 155 Yangqiao Road West, Fuzhou, Fujian 350002, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
- College of Chemistry, Fuzhou University, Fuzhou, Fujian 350108, P. R. China
| |
Collapse
|
2
|
Emmanuel López Muñoz P, Rodríguez Tzompantzi T, Bernès S, Luisa Meza-León R. Regio-, chemo- and stereoselective epoxidation of the 7,3-lactone-xylofuranose and some related chiral lactones. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.153811] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
|
3
|
Kuncser AC, Vlaicu ID, Pavel OD, Zavoianu R, Badea M, Radu D, Culita DC, Rostas AM, Olar R. Soft synthesis and characterization of goethite-based nanocomposites as promising cyclooctene oxidation catalysts. RSC Adv 2021; 11:27589-27602. [PMID: 35480697 PMCID: PMC9037824 DOI: 10.1039/d1ra04211d] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Accepted: 08/01/2021] [Indexed: 11/21/2022] Open
Abstract
Goethite based nanocomposites with a different composition such as 6FeO(OH)·MnO(OH)·0.5H2O (Mn-composite), xFeO(OH)·M(OH)2·yH2O (Co-composite (M: Co, x = 12, y = 3), Ni-composite (M: Ni, x = 7, y = 2)) and xFeO(OH)·MO·yH2O (Cu-composite (M: Cu, x = 5.5, y = 3), Zn-composite (M: Zn, x = 6, y = 1.5)) have been prepared by a soft chemical synthesis consisting in acetate hydrolysis. The data provided by Fourier transform infrared (FTIR), ultraviolet-visible-near infrared (UV-Vis-NIR), electron paramagnetic resonance (EPR) and Mössbauer spectra account for a slight modification of all composites' physicochemical properties compared to the starting material. Powder X-ray diffraction and transmission electron microscopy (TEM) investigations revealed the secondary phase nature and presence along with that of goethite. The TEM data are also consistent with a nano rod-like morphology with a 5–10 nm width and an average length of 40 nm. The catalytic oxidation of cyclooctene with O2 using isobutyraldehyde as reductant and acetonitrile as a solvent was performed in batch conditions for 5 h at room temperature. The selectivity for the epoxide was higher than 99% for all tested solids. The conversion of cyclooctene decreased from 55% to 4% following the same order of variance as the base/acid sites ratio: Mn-composite > Fe-composite > Co-composite > Ni-composite > Zn-composite > Cu-composite. The 6FeO(OH)·MnO(OH)·0.5H2O (Mn-composite) exhibited the most promising catalytic activity in cyclooctene oxidation, which can be correlated with the redox ability of Mn(iii) combined with the increased base character of this solid. The catalytic activity of this sample decreases by 10% after several successive reaction cycles. Goethite based nanocomposites with different compositions (6FeO(OH)·MnO(OH)·0.5H2O, xFeO(OH)·M(OH)2·yH2O or xFeO(OH)·MO·yH2O where M = Co, Ni, Cu or Zn) have been prepared by a soft chemical synthesis via acetate hydrolysis.![]()
Collapse
Affiliation(s)
- Andrei Cristian Kuncser
- National Institute of Materials Physics, Laboratory of Atomic Structures and Defects in Advanced Materials 405A Atomiştilor Str., Măgurele Ilfov 077125 Romania
| | - Ioana Dorina Vlaicu
- National Institute of Materials Physics, Laboratory of Atomic Structures and Defects in Advanced Materials 405A Atomiştilor Str., Măgurele Ilfov 077125 Romania
| | - Octavian Dumitru Pavel
- University of Bucharest, Faculty of Chemistry, Department of Organic Chemistry, Biochemistry and Catalysis 4-12 Regina Elisabeta Av. S3 Bucharest 030018 Romania
| | - Rodica Zavoianu
- University of Bucharest, Faculty of Chemistry, Department of Organic Chemistry, Biochemistry and Catalysis 4-12 Regina Elisabeta Av. S3 Bucharest 030018 Romania
| | - Mihaela Badea
- University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry 90-92 Panduri Str. 050663 Bucharest Romania
| | - Dana Radu
- National Institute of Materials Physics, Laboratory of Atomic Structures and Defects in Advanced Materials 405A Atomiştilor Str., Măgurele Ilfov 077125 Romania
| | - Daniela Cristina Culita
- Ilie Murgulescu Institute of Physical Chemistry 202 Splaiul Independentei 060021 Bucharest Romania
| | - Arpad Mihai Rostas
- National Institute of Materials Physics, Laboratory of Atomic Structures and Defects in Advanced Materials 405A Atomiştilor Str., Măgurele Ilfov 077125 Romania
| | - Rodica Olar
- University of Bucharest, Faculty of Chemistry, Department of Inorganic Chemistry 90-92 Panduri Str. 050663 Bucharest Romania
| |
Collapse
|
4
|
Yu Q, Lu C, Zhao B. Enantioselective Hydroboration of Ketones Catalyzed by Rare-Earth-Metal Complexes Supported with Phenoxy-Functionalized TsDPEN Ligands. Organometallics 2021. [DOI: 10.1021/acs.organomet.1c00272] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Qishun Yu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Organic Synthesis of Jiangsu Province, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Chengrong Lu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Organic Synthesis of Jiangsu Province, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Bei Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Organic Synthesis of Jiangsu Province, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| |
Collapse
|
5
|
Zhang LW, Wang L, Ji N, Dai SY, He W. Asymmetric epoxidation of α,β-unsaturated ketones via an amine-thiourea dual activation catalysis. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.152941] [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]
|
6
|
Affiliation(s)
- Ruibin Wang
- Department of Chemistry Guangdong Technion Israel Institute of Technology Guangdong 515063 P. R. China
| | - Sehoon Park
- Department of Chemistry Guangdong Technion Israel Institute of Technology Guangdong 515063 P. R. China
- Technion-Israel Institute of Technology Technion City 32000 Haifa Israel
| |
Collapse
|
7
|
Shan H, Lu C, Zhao B, Yao Y. Asymmetric epoxidation of α,β-unsaturated ketones catalyzed by rare-earth metal amides RE[N(SiMe 3) 2] 3 with chiral TADDOL ligands. NEW J CHEM 2021. [DOI: 10.1039/d0nj05228k] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
The first application of rare-earth metal catalyst combined with TADDOLs in the asymmetric epoxidation of α,β-unsaturated ketones is disclosed.
Collapse
Affiliation(s)
- Haiwen Shan
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Chengrong Lu
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Bei Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Yingming Yao
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| |
Collapse
|
8
|
Cheng J, Lu C, Zhao B. Cycloaddition of carbon dioxide and epoxides catalyzed by rare earth metal complexes bearing a Trost ligand. NEW J CHEM 2021. [DOI: 10.1039/d1nj02460d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Rare earth metal complexes containing Trost ligands were used to catalyze the cycloaddition reaction of epoxides with CO2. A series of epoxides were successfully converted into the corresponding cyclic carbonates under mild conditions.
Collapse
Affiliation(s)
- Jun Cheng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Chengrong Lu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Bei Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| |
Collapse
|
9
|
Synthesis of chiral salan ligands with bulky substituents and their application in Cu-catalyzed asymmetric Henry reaction. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121546] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
|
10
|
Majdecki M, Tyszka-Gumkowska A, Jurczak J. Highly Enantioselective Epoxidation of α,β-Unsaturated Ketones Using Amide-Based Cinchona Alkaloids as Hybrid Phase-Transfer Catalysts. Org Lett 2020; 22:8687-8691. [PMID: 33112627 PMCID: PMC7660942 DOI: 10.1021/acs.orglett.0c03272] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
![]()
A series of 20 one chiral epoxides
were obtained with excellent
yields (up to 99%) and enantioselectivities (up to >99% ee) using
hybrid amide-based Cinchona alkaloids. Our method
is characterized by low catalyst loading (0.5 mol %) and short reaction
times. Moreover, the epoxidation process can be carried out in 10
cycles, without further catalyst addition to the reaction mixture.
This methodology significantly enhance the scale of the process using
very low catalyst loading.
Collapse
Affiliation(s)
- Maciej Majdecki
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Agata Tyszka-Gumkowska
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| | - Janusz Jurczak
- Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland
| |
Collapse
|
11
|
Sun Y, Lu C, Zhao B, Xue M. Enantioselective Hydroboration of Ketones Catalyzed by Rare-Earth Metal Complexes Containing Trost Ligands. J Org Chem 2020; 85:10504-10513. [PMID: 32589850 DOI: 10.1021/acs.joc.0c00877] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Four chiral dinuclear rare-earth metal complexes [REL1]2 (RE = Y(1), Eu(2), Nd(3), La (4)) stabilized by Trost proligand H3L1 (H3L1 = (S,S)-2,6-bis[2-(hydroxydiphenylmethyl)pyrrolidin-1-ylmethyl]-4-methylphenol) were first prepared, and all were characterized by X-ray diffraction. Complex 4 was employed as the catalyst for enantioselective hydroboration reaction of substituted ketones, and the corresponding secondary alcohols with excellent yields and high ee values were obtained using reductant HBpin. The same result was also achieved using the combination of lanthanium amides La[N(SiMe3)2]3 with Trost proligand H3L1 in a 1:1 molar ratio. The experimental findings and DFT calculation revealed the possible mechanism of the enantioselective hydroboration reaction and defined the origin of the enantioselectivity in the current system.
Collapse
|
12
|
Passos GFS, Gomes MGM, de Aquino TM, de Araújo-Júnior JX, de Souza SJM, Cavalcante JPM, dos Santos EC, Bassi ÊJ, da Silva-Júnior EF. Computer-Aided Design, Synthesis, and Antiviral Evaluation of Novel Acrylamides as Potential Inhibitors of E3-E2-E1 Glycoproteins Complex from Chikungunya Virus. Pharmaceuticals (Basel) 2020; 13:E141. [PMID: 32629969 PMCID: PMC7407227 DOI: 10.3390/ph13070141] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2020] [Revised: 06/23/2020] [Accepted: 06/25/2020] [Indexed: 02/07/2023] Open
Abstract
Chikungunya virus (CHIKV) causes an infectious disease characterized by inflammation and pain of the musculoskeletal tissues accompanied by swelling in the joints and cartilage damage. Currently, there are no licensed vaccines or chemotherapeutic agents to prevent or treat CHIKV infections. In this context, our research aimed to explore the potential in vitro anti-CHIKV activity of acrylamide derivatives. In silico methods were applied to 132 Michael's acceptors toward the six most important biological targets from CHIKV. Subsequently, the ten most promising acrylamides were selected and synthesized. From the cytotoxicity MTT assay, we verified that LQM330, 334, and 336 demonstrate high cell viability at 40 µM. Moreover, these derivatives exhibited anti-CHIKV activities, highlighting the compound LQM334 which exhibited an inhibition value of 81%. Thus, docking simulations were performed to suggest a potential CHIKV-target for LQM334. It was observed that the LQM334 has a high affinity towards the E3-E2-E1 glycoproteins complex. Moreover, LQM334 reduced the percentage of CHIKV-positive cells from 74.07 to 0.88%, 48h post-treatment on intracellular flow cytometry staining. In conclusion, all virtual simulations corroborated with experimental results, and LQM334 could be used as a promising anti-CHIKV scaffold for designing new drugs in the future.
Collapse
Affiliation(s)
- Gabriel Felipe Silva Passos
- Laboratory of Medicinal Chemistry, Pharmaceutical Sciences Institute, Federal University of Alagoas, Maceió 57072-970, Brazil; (G.F.S.P.); (M.G.M.G.); (J.X.d.A.-J.)
| | - Matheus Gabriel Moura Gomes
- Laboratory of Medicinal Chemistry, Pharmaceutical Sciences Institute, Federal University of Alagoas, Maceió 57072-970, Brazil; (G.F.S.P.); (M.G.M.G.); (J.X.d.A.-J.)
| | - Thiago Mendonça de Aquino
- Center of Analysis and Research in Nuclear Magnetic Resonance, Chemistry and Biotechnology Institute, Federal University of Alagoas, Maceió 57072-970, Brazil;
| | - João Xavier de Araújo-Júnior
- Laboratory of Medicinal Chemistry, Pharmaceutical Sciences Institute, Federal University of Alagoas, Maceió 57072-970, Brazil; (G.F.S.P.); (M.G.M.G.); (J.X.d.A.-J.)
| | - Stephannie Janaina Maia de Souza
- Immunoregulation Research Group, Laboratory of Research in Virology and Immunology, Institute of Biological and Health Sciences, Federal University of Alagoas, Maceió 57072-970, Brazil; (S.J.M.d.S.); (J.P.M.C.); (E.C.d.S.); (Ê.J.B.)
| | - João Pedro Monteiro Cavalcante
- Immunoregulation Research Group, Laboratory of Research in Virology and Immunology, Institute of Biological and Health Sciences, Federal University of Alagoas, Maceió 57072-970, Brazil; (S.J.M.d.S.); (J.P.M.C.); (E.C.d.S.); (Ê.J.B.)
| | - Elane Conceição dos Santos
- Immunoregulation Research Group, Laboratory of Research in Virology and Immunology, Institute of Biological and Health Sciences, Federal University of Alagoas, Maceió 57072-970, Brazil; (S.J.M.d.S.); (J.P.M.C.); (E.C.d.S.); (Ê.J.B.)
| | - Ênio José Bassi
- Immunoregulation Research Group, Laboratory of Research in Virology and Immunology, Institute of Biological and Health Sciences, Federal University of Alagoas, Maceió 57072-970, Brazil; (S.J.M.d.S.); (J.P.M.C.); (E.C.d.S.); (Ê.J.B.)
| | - Edeildo Ferreira da Silva-Júnior
- Laboratory of Medicinal Chemistry, Pharmaceutical Sciences Institute, Federal University of Alagoas, Maceió 57072-970, Brazil; (G.F.S.P.); (M.G.M.G.); (J.X.d.A.-J.)
- Center of Analysis and Research in Nuclear Magnetic Resonance, Chemistry and Biotechnology Institute, Federal University of Alagoas, Maceió 57072-970, Brazil;
| |
Collapse
|
13
|
Devi ES, Pavithra T, Tamilselvi A, Nagarajan S, Sridharan V, Maheswari CU. N-Heterocyclic Carbene Catalyzed Synthesis of Trisubstituted Epoxides via Tandem Amidation/Epoxidation Sequence. Org Lett 2020; 22:3576-3580. [PMID: 32271025 DOI: 10.1021/acs.orglett.0c01017] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A tandem amidation/epoxidation sequence between various substituted chalcones and N,N-dimethylformamide (DMF) for the synthesis of trisubstituted epoxides employing N-heterocyclic carbene catalysis was developed. This reaction was performed under metal-free conditions in the presence of tert-butyl hydroperoxide (TBHP) as the oxidant. Trisubstituted epoxides bearing a ketone and an amide functionality (N,N-dimethyl formyl group) were synthesized starting from a wide range of chalcones in moderate to good yields with excellent diastereoselectivity.
Collapse
Affiliation(s)
- E Sankari Devi
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, India
| | - Thangavel Pavithra
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, India
| | - A Tamilselvi
- Department of Chemistry, Thiagarajar College, Madurai-625009, India
| | - Subbiah Nagarajan
- Department of Chemistry, National Institute of Technology-Warangal, Warangal-506004, India
| | - Vellaisamy Sridharan
- Department of Chemistry and Chemical Sciences, Central University of Jammu, Rahya-Suchani (Bagla), District-Samba, Jammu-181143, J&K, India
| | - C Uma Maheswari
- Department of Chemistry, School of Chemical and Biotechnology, SASTRA Deemed University, Thanjavur-613401, India
| |
Collapse
|
14
|
Isosteric expansion of the structural diversity of chiral ligands: Design and application of proline-based N,N′-dioxide ligands for copper-catalyzed enantioselective Henry reactions. Tetrahedron 2019. [DOI: 10.1016/j.tet.2019.130492] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
|
15
|
Xia X, Lu C, Zhao B, Yao Y. Lanthanide complexes combined with chiral salen ligands: application in the enantioselective epoxidation reaction of α,β-unsaturated ketones. RSC Adv 2019; 9:13749-13756. [PMID: 35519594 PMCID: PMC9063913 DOI: 10.1039/c9ra01529a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2019] [Accepted: 04/17/2019] [Indexed: 11/21/2022] Open
Abstract
Readily available lanthanide amides Ln[N(SiMe3)2]3 (Ln = Nd (1), Sm (2), Eu (3), Yb (4), La (5)), combined with chiral salen ligands H2La ((S,S)-N,N'-di-(3,5-disubstituted-salicylidene)-1,2-cyclohexanediamine) and H2Lb ((S,S)-N,N'-di-(3,5-disubstituted-salicylidene)-1,2-diphenyl-1,2-ethanediamine) were employed in the enantioselective epoxidation of α,β-unsaturated ketones. It was found that the salen-La complex shows the highest efficiency and enantioselectivity. A relatively broad scope of α,β-unsaturated ketones was investigated, and excellent yields (up to 99%) and moderate to good enantioselectivities (37-87%) of the target molecules were achieved.
Collapse
Affiliation(s)
- Xuexiu Xia
- College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University Suzhou 215123 People's Republic of China
| | - Chengrong Lu
- College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University Suzhou 215123 People's Republic of China
| | - Bei Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University Suzhou 215123 People's Republic of China
- Key Laboratory of Organic Synthesis of Jiangsu Province People's Republic of China +86 51265880305 +86 512 65880305
| | - Yingming Yao
- College of Chemistry, Chemical Engineering and Materials Science, Dushu Lake Campus, Soochow University Suzhou 215123 People's Republic of China
- Key Laboratory of Organic Synthesis of Jiangsu Province People's Republic of China +86 51265880305 +86 512 65880305
| |
Collapse
|
16
|
Zhou M, Zheng X, Wang Y, Yuan D, Yao Y. A Multicomponent Approach to Oxazolidinone Synthesis Catalyzed by Rare‐Earth Metal Amides. ChemCatChem 2019. [DOI: 10.1002/cctc.201900221] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Meixia Zhou
- Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering and Materials Science Dushu Lake CampusSoochow University Suzhou 215123 P.R. China
| | - Xizhou Zheng
- Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering and Materials Science Dushu Lake CampusSoochow University Suzhou 215123 P.R. China
| | - Yaorong Wang
- Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering and Materials Science Dushu Lake CampusSoochow University Suzhou 215123 P.R. China
| | - Dan Yuan
- Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering and Materials Science Dushu Lake CampusSoochow University Suzhou 215123 P.R. China
| | - Yingming Yao
- Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering and Materials Science Dushu Lake CampusSoochow University Suzhou 215123 P.R. China
| |
Collapse
|
17
|
Synthesis of novel phase transfer catalysts derived from proline-mandelic acid/tartaric acid: their evaluation in enantioselective epoxidation and Darzen condensation. J CHEM SCI 2019. [DOI: 10.1007/s12039-019-1597-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
18
|
Wang W, Wang X, Zhou S, Xu X, Du J, Zhang L, Mu X, Wei Y, Zhu X, Wang S. Syntheses, Structures, and Catalytic Activities of the Anionic Heterobimetallic Rare-Earth Metal Complexes Supported by Pyrrolyl-Substituted 1,2-Diimino Ligands. Inorg Chem 2018; 57:10390-10400. [PMID: 30074389 DOI: 10.1021/acs.inorgchem.8b01556] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Wei Wang
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Xiaojia Wang
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Shuangliu Zhou
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Xiaolong Xu
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Jun Du
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Lijun Zhang
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Xiaolong Mu
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Yun Wei
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Xiancui Zhu
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
| | - Shaowu Wang
- Laboratory of Functionalized Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, Anhui 241000, China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, China
| |
Collapse
|
19
|
A Domino Approach for the Synthesis of α,β‐Epoxy Ketones from Carbonyl Compounds under Neat Conditions at Ambient Temperature. ChemistrySelect 2018. [DOI: 10.1002/slct.201801162] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
20
|
Song P, Lu C, Fei Z, Zhao B, Yao Y. Enantioselective Reduction of Ketones Catalyzed by Rare-Earth Metals Complexed with Phenoxy Modified Chiral Prolinols. J Org Chem 2018; 83:6093-6100. [DOI: 10.1021/acs.joc.8b00783] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Peng Song
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Organic Synthesis of Jiangsu Province, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Chengrong Lu
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Organic Synthesis of Jiangsu Province, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Zenghui Fei
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Organic Synthesis of Jiangsu Province, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Bei Zhao
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Organic Synthesis of Jiangsu Province, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| | - Yingming Yao
- College of Chemistry, Chemical Engineering and Materials Science, Key Laboratory of Organic Synthesis of Jiangsu Province, Dushu Lake Campus, Soochow University, Suzhou 215123, People’s Republic of China
| |
Collapse
|
21
|
Enantioselective phospha-Michael reaction of diethyl phosphonate with exocyclic α,β-unsaturated benzocyclic ketones catalyzed by a dinuclear zinc−AzePhenol catalyst. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.03.016] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
22
|
Hu L, Lu C, Zhao B, Yao Y. Intermolecular addition of alcohols to carbodiimides catalyzed by rare-earth metal amides. Org Chem Front 2018. [DOI: 10.1039/c7qo00991g] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Various isoureas were obtained in good to excellent yields via the addition reaction using La[N(SiMe3)2]3 as the catalyst.
Collapse
Affiliation(s)
- Lijuan Hu
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Chengrong Lu
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Bei Zhao
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| | - Yingming Yao
- College of Chemistry
- Chemical Engineering and Materials Science
- Dushu Lake Campus
- Soochow University
- Suzhou 215123
| |
Collapse
|
23
|
|
24
|
Affiliation(s)
| | - Normand Voyer
- Département de chimie and PROTEO, Université Laval , Québec, Canada
| |
Collapse
|
25
|
Luo Y, Gao Z, Chen J. Rare-earth metal bis(silylamide) complexes supported by ferrocene-substituted amidinate and their performance in cis -1,4 selective polymerization of isoprene. J Organomet Chem 2017. [DOI: 10.1016/j.jorganchem.2017.05.056] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
26
|
Co(II) Schiff base complex decorated on polysalicylaldehyde as an efficient, selective, heterogeneous and reusable catalyst for epoxidation of olefins in mild and self-coreductant conditions. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-3027-z] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
|
27
|
One pot synthesis of α,β-epoxy ketones by oxidative coupling of methyl arenes with cinnamic acids involving C(sp 3 )―H activation and decarboxylative strategy. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.04.025] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
|
28
|
|
29
|
Chauhan P, Ravi M, Kant R, Yadav PP. Oxidative coupling of 1-(2-methyl-4-phenylquinolin-3-yl)ethanone with ethanol and unexpected deacetylative synthesis of 3-hydroxy quinoline. Org Biomol Chem 2017; 15:1080-1085. [PMID: 28067392 DOI: 10.1039/c6ob02336c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
An efficient one pot method for the synthesis of anti-α,β-epoxy ketones from 1-(2-methyl-4-phenylquinolin-3-yl)ethanone and ethanol has been developed by a modified Darzen reaction. The reaction occurs under oxidative conditions via a cascade sequence of bromination, aldol condensation followed by substitution. The reaction in the presence of NBS and a base however, in the absence of an oxidant, led to the formation of the corresponding 3-hydroxylated product via an unusual rearrangement.
Collapse
Affiliation(s)
- Parul Chauhan
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, India.
| | - Makthala Ravi
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, India.
| | - Ruchir Kant
- Division of Molecular and Structural Biology, CSIR-Central Drug Research Institute, Lucknow-226031, India
| | - Prem P Yadav
- Division of Medicinal and Process Chemistry, CSIR-Central Drug Research Institute, Lucknow-226031, India.
| |
Collapse
|
30
|
Jiang X, Xue Y, Ma S. Aerobic oxidation and EATA-based highly enantioselective synthesis of lamenallenic acid. Org Chem Front 2017. [DOI: 10.1039/c6qo00785f] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective synthesis of (−)-lamenallenic acid utilizing the recently developed EATA reaction and aerobic oxidation reaction has been accomplished.
Collapse
Affiliation(s)
- Xingguo Jiang
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Yufeng Xue
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| | - Shengming Ma
- State Key Laboratory of Organometallic Chemistry
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
- Shanghai 200032
- P. R. China
| |
Collapse
|
31
|
Fei Z, Zeng C, Lu C, Zhao B, Yao Y. An efficient asymmetric hydrophosphonylation of unsaturated amides catalyzed by rare-earth metal amides [(Me3Si)2N]3RE(μ-Cl)Li(THF)3 with phenoxy-functionalized chiral prolinols. RSC Adv 2017. [DOI: 10.1039/c7ra00468k] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An asymmetric hydrophosphonylation reaction of diethyl phosphite with α,β-unsaturated amides catalyzed by [(Me3Si)2N]3RE(μ-Cl)Li(THF)3 with H2Ln ((S)-2,4-R2-6-[[2-(hydroxydiphenylmethyl)pyrrolidin-1-yl]methyl]phenol) was disclosed.
Collapse
Affiliation(s)
- Zenghui Fei
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou 215123
- P. R. China
| | - Chao Zeng
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou 215123
- P. R. China
| | - Chengrong Lu
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou 215123
- P. R. China
| | - Bei Zhao
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou 215123
- P. R. China
| | - Yingming Yao
- College of Chemistry, Chemical Engineering and Materials Science
- Soochow University
- Key Laboratory of Organic Synthesis of Jiangsu Province
- Suzhou 215123
- P. R. China
| |
Collapse
|
32
|
Ashokkumar V, Siva A. One-pot synthesis of α,β-epoxy ketones through domino reaction between alkenes and aldehydes catalyzed by proline based chiral organocatalysts. Org Biomol Chem 2017; 15:2551-2561. [DOI: 10.1039/c7ob00031f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A proline based metal free organocatalysts developed by new approach for the synthesis of epoxide derivatives through domino reaction. This domino reaction allows the direct access to epoxide from various alkene and aldehyde through C–H functionalization and C–C/C–O bond formation. The catalytic efficiencies of organocatalysts were also determined by domino reaction with very good yield (up to 95 %) and ee's (up to 99 %).
Collapse
Affiliation(s)
- Veeramanoharan Ashokkumar
- Supramolecular and Organometallic Chemistry Lab
- School of Chemistry
- Madurai Kamaraj University
- Madurai 625 021
- India
| | - Ayyanar Siva
- Supramolecular and Organometallic Chemistry Lab
- School of Chemistry
- Madurai Kamaraj University
- Madurai 625 021
- India
| |
Collapse
|
33
|
Rasool F, Bhat AH, Hussain N, Mukherjee D. Reaction of Glycals with Organic Peroxides: Synthesis of 2-iodo, 2-Deoxy and 2,3-Unsaturated Glycosides. ChemistrySelect 2016. [DOI: 10.1002/slct.201601849] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Faheem Rasool
- Natural Product Chemistry- Miocrobes; Indian Institute of Integrative Medicine (CSIR); Jammu- 180001
- Academy of Scientific and Innovative Research; New Delhi India
| | - Aabid H. Bhat
- Natural Product Chemistry- Miocrobes; Indian Institute of Integrative Medicine (CSIR); Jammu- 180001
| | - Nazar Hussain
- Natural Product Chemistry- Miocrobes; Indian Institute of Integrative Medicine (CSIR); Jammu- 180001
- Academy of Scientific and Innovative Research; New Delhi India
| | - Debaraj Mukherjee
- Natural Product Chemistry- Miocrobes; Indian Institute of Integrative Medicine (CSIR); Jammu- 180001
- Academy of Scientific and Innovative Research; New Delhi India
| |
Collapse
|
34
|
Liu YC, Wu ZL. Switchable asymmetric bio-epoxidation of α,β-unsaturated ketones. Chem Commun (Camb) 2016; 52:1158-61. [PMID: 26596424 DOI: 10.1039/c5cc07548c] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Efficient asymmetric bio-epoxidation of electron-deficient α,β-unsaturated ketones was realized via a tandem reduction-epoxidation-dehydrogenation cascade, which proceeds in a switchable manner to afford either chiral epoxy ketones or allylic epoxy alcohols with up to >99% yield and >99%ee.
Collapse
Affiliation(s)
- Yu-Chang Liu
- Key Laboratory of Environmental and Applied Microbiology of CAS & Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
| | - Zhong-Liu Wu
- Key Laboratory of Environmental and Applied Microbiology of CAS & Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
| |
Collapse
|
35
|
Asymmetric Michael addition of malonates to unsaturated ketones catalyzed by rare earth metal complexes bearing phenoxy functionalized chiral diphenylprolinolate ligands. ACTA ACUST UNITED AC 2016. [DOI: 10.1016/j.tetasy.2016.07.014] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
|
36
|
Zong Z, Bai X, Lu S, Li Z. A general method for synthesis of cis-dicarbonyl epoxides through DBU/LiBr-cocatalyzed cyclization of α,β-dicarbonyl peroxides. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.07.034] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
|
37
|
Shi L, Su Q, Chen J, Li X, Luo Y. Rare-earth metal bis(silylamide) complexes supported by mono-dentate arylamido ligand: synthesis, reactivity, and catalyst precursors in living cis-1,4-selective polymerization of isoprene. Dalton Trans 2016; 45:1391-7. [DOI: 10.1039/c5dt03937a] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
One-pot salt metathesis reaction of LnCl3, [2,6-iPr2C6H3N(SiMe3)]Li and LiN(SiHMe2)2 in 1 : 1 : 2 molar ratio gave [2,6-iPr2C6H3N(SiMe3)]Ln[N(SiHMe2)2]2(THF) (Ln = Y, Lu, La), which were highly active for cis-1,4 polymerization of isoprene in the presence of [Ph3C][B(C6F5)4] and AliBu3.
Collapse
Affiliation(s)
- Liqin Shi
- Ningbo Polytechnic
- Ningbo 315800
- P. R. China
- Zhejiang University of Technology
- Hangzhou 310032
| | - Qi Su
- Organometallic Chemistry Laboratory
- Ningbo Institute of Technology
- Zhejiang University
- Ningbo 315100
- P. R. China
| | - Jue Chen
- Organometallic Chemistry Laboratory
- Ningbo Institute of Technology
- Zhejiang University
- Ningbo 315100
- P. R. China
| | - Xiaonian Li
- Zhejiang University of Technology
- Hangzhou 310032
- P. R. China
| | - Yunjie Luo
- Organometallic Chemistry Laboratory
- Ningbo Institute of Technology
- Zhejiang University
- Ningbo 315100
- P. R. China
| |
Collapse
|
38
|
Tolpygin AO, Linnikova OA, Glukhova TA, Cherkasov AV, Fukin GK, Trifonov AA. Bis(amido) rare-earth complexes coordinated by tridentate amidinate ligand: synthesis, structure and catalytic activity in the polymerization of isoprene and rac-lactide. RSC Adv 2016. [DOI: 10.1039/c5ra27960g] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Rare-earth bis(amides) {2-[Ph2Р(O)]C6H4NC(tBu)N(2,6-Me2C6H3)}Ln(N(SiMe3)2)2 (Ln = Y, Nd, La) coordinated by tridentate amidinate ligand were synthesized, structurally characterized and evaluated as catalysts for isoprene and rac-lactide polymerizations.
Collapse
Affiliation(s)
- Aleksei O. Tolpygin
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Olesya A. Linnikova
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Tatyana A. Glukhova
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Anton V. Cherkasov
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Georgy K. Fukin
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| | - Alexander A. Trifonov
- Institute of Organometallic Chemistry of Russian Academy of Sciences
- Nizhny Novgorod
- Russia
| |
Collapse
|
39
|
Ashokkumar V, Balasaravanan R, Sadhasivam V, Jenofar SM, Siva A. A new class of bifunctional chiral phase transfer catalysts for highly enantioselective asymmetric epoxidation of α,β-unsaturated ketones at ambient temperature. ACTA ACUST UNITED AC 2015. [DOI: 10.1016/j.molcata.2015.08.016] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
|