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Binnemans K, Jones PT. Methanesulfonic acid (MSA) in clean processes and applications: a tutorial review. GREEN CHEMISTRY : AN INTERNATIONAL JOURNAL AND GREEN CHEMISTRY RESOURCE : GC 2024; 26:8583-8614. [PMID: 39081497 PMCID: PMC11284624 DOI: 10.1039/d4gc02031f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 04/24/2024] [Accepted: 06/24/2024] [Indexed: 08/02/2024]
Abstract
This Tutorial Review acquaints chemists and metallurgists with the properties and industrial applications of methanesulfonic acid (MSA, CH3SO3H). Over the past quarter-century, MSA has garnered increasing interest as a reagent for green chemistry due to its strong acidity, while circumventing many of the challenges associated with handling concentrated sulfuric acid, hydrochloric acid, or nitric acid. Concentrated MSA is a non-oxidizing reagent, exhibiting high chemical stability against redox reactions and hydrolysis, as well as high thermal stability and limited corrosivity towards construction materials. It is colorless, odorless, and possesses a very low vapor pressure. MSA combines commendable biodegradability with low toxicity. It is extensively utilized as a Brønsted acid catalyst for esterification or alkylation reactions, and is employed in biodiesel production. The high solubility of its metal salts, the high electrical conductivity of its concentrated solutions, coupled with the high electrochemical stability of MSA and its anion, make MSA-based electrolytes beneficial in electrochemical applications. Examples include the electrodeposition of tin-lead solder for electronic applications and the high-speed plating of tin on steel plate for food cans. MSA-based electrolytes are used in redox flow batteries (RFBs). MSA offers a much safer and environmentally friendlier alternative to electrolytes based on fluoroboric or fluorosilicic acid. A novel application area is as a strong acid in extractive metallurgy, where it may contribute to the development of circular hydrometallurgy. MSA is being explored in lithium-ion battery recycling flowsheets, as well as in other applications in the field of metal recovery and refining. However, this review is not solely about the advantages of MSA for green chemistry or clean technologies, as there are also some potential drawbacks. Apart from its higher price compared to regular strong acids, MSA has only minor advantages for applications where sulfuric acid performs well. Since methanesulfonate biodegrades into sulfate, the same emission restrictions as for sulfate should be considered. In conclusion, MSA is the acid of choice for applications where metal sulfates cannot be used due to poor solubility or where concentrated sulfuric acid is too reactive towards organics.
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Affiliation(s)
- Koen Binnemans
- KU Leuven, Department of Chemistry Celestijnenlaan 200F P.O. box 2404 B-3001 Heverlee Belgium
| | - Peter Tom Jones
- KU Leuven, Department of Materials Engineering Kasteelpark Arenberg 44 bus 2450 B-3001 Heverlee Belgium
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Wang Y, Liu S. Remarkable Enhancement of Antioxidant Activity of the Ovalbumin-EGCG Conjugate through a Novel Preceding Selective Protection Grafting Strategy. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2024; 72:13320-13327. [PMID: 38819406 DOI: 10.1021/acs.jafc.4c01187] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
Conventional radical grafting of proteins with catechins consumed the most antioxidant-active hydroxyls during grafting, thus failing to effectively retain antioxidant activity in conjugates. In this study, a novel strategy of selective protection of the most reactive hydroxyls before grafting was developed to preserve the most reactive hydroxyls and effectively retain antioxidant activity in conjugates. Selective protection of the most reactive hydroxyls of (-)-epigallocatechin-3-gallate (EGCG) was successfully realized in a yield of 87% applying trimethyl orthopropionate and catalytic calcium triflate at 40 °C. The novel ovalbumin (OVA)-EGCG conjugate with 93% grafting ratio was prepared by radical grafting with the selectively protected EGCG and subsequent deprotection. Substantially enhanced antioxidant performance of the novel OVA-EGCG conjugate in liposomes was unveiled with notably reduced curcumin degradation and leakage. The strategy and approaches developed in this study will be valuable to effectively improve the antioxidant activities of protein-catechin grafting conjugates.
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Affiliation(s)
- Yumin Wang
- Department of Food Science and Nutrition, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
| | - Songbai Liu
- Department of Food Science and Nutrition, Zhejiang University, 866 Yuhangtang Road, Hangzhou 310058, China
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3
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Huang M, Wu YD, Zhang X. Mechanistic Insights into Sc(III)-Catalyzed Asymmetric Homologation of Ketones with Diazo Compounds: How Trans Influence Assists in Controlling Stereochemistry. Chemistry 2024; 30:e202303873. [PMID: 38357809 DOI: 10.1002/chem.202303873] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2023] [Revised: 01/23/2024] [Accepted: 02/13/2024] [Indexed: 02/16/2024]
Abstract
Asymmetric one-carbon homologation or ring expansion of ketones with formal insertion of carbene intermediate, is a challenging but useful strategy to construct a complex skeleton. Sc(III) and chiral ligands have been employed in this regard. However, due to flexible conformations and a variety of stereo models, the origin of stereochemistry remains ambiguous. Density functional theory (DFT) calculations were carried out to explore the interactions that control the stereoselectivity of a Sc(III)-catalyzed asymmetric homologation. The trans influence of counterions was found to affect the coordination mode of ketone to Sc(III), and consequently affect the stereoselectivity.
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Affiliation(s)
- Meirong Huang
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
- Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China
| | - Yun-Dong Wu
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
- Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China
| | - Xinhao Zhang
- Lab of Computational Chemistry and Drug Design, State Key Laboratory of Chemical Oncogenomics, Peking University Shenzhen Graduate School, Shenzhen, 518055, P. R. China
- Shenzhen Bay Laboratory, Shenzhen, 518132, P. R. China
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4
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Basu D, Ghosh B, Srivastava D, Patra N, Nayek HP. Mononuclear organogermanium(IV) catalysts for a [3 + 2] cycloaddition reaction. Dalton Trans 2024; 53:5648-5657. [PMID: 38441230 DOI: 10.1039/d4dt00239c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/20/2024]
Abstract
Three mononuclear Ge(IV) compounds, [(C6H5)2Ge(C13H8N2O4)] (1), [(C6H5)2Ge(C14H10N2O5)] (2), and [(C6H5)2Ge(C14H11NO3)] (3), have been synthesized by the reaction of pro-ligands H2L1 (C13H10N2O4), H2L2 (C14H12N2O5), and H2L3 (C14H13NO3) with (C6H5)2GeCl2 in the presence of triethylamine. All compounds were characterized by FT-IR spectroscopy and NMR spectroscopy. Single crystal X-ray diffraction analysis shows that the germanium(IV) atom exhibits a five-coordinated geometry in compounds 1 and 2. All compounds were screened as Lewis acid catalysts in the [3 + 2] cycloaddition reaction between sodium azide and various nitriles. The reactions resulted in the formation of 5-substituted 1H-tetrazoles with yields of up to 96%. Based on the experimental findings and DFT calculations, a plausible mechanism is proposed for the [3 + 2] cycloaddition reaction.
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Affiliation(s)
- Debayan Basu
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, Jharkhand, India.
| | - Barshali Ghosh
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, Jharkhand, India.
| | - Diship Srivastava
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, Jharkhand, India.
| | - Niladri Patra
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, Jharkhand, India.
| | - Hari Pada Nayek
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines), Dhanbad-826004, Jharkhand, India.
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Behrsing T, Blair VL, Jaroschik F, Deacon GB, Junk PC. Rare Earths-The Answer to Everything. Molecules 2024; 29:688. [PMID: 38338432 PMCID: PMC10856286 DOI: 10.3390/molecules29030688] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2024] [Revised: 01/24/2024] [Accepted: 01/27/2024] [Indexed: 02/12/2024] Open
Abstract
Rare earths, scandium, yttrium, and the fifteen lanthanoids from lanthanum to lutetium, are classified as critical metals because of their ubiquity in daily life. They are present in magnets in cars, especially electric cars; green electricity generating systems and computers; in steel manufacturing; in glass and light emission materials especially for safety lighting and lasers; in exhaust emission catalysts and supports; catalysts in artificial rubber production; in agriculture and animal husbandry; in health and especially cancer diagnosis and treatment; and in a variety of materials and electronic products essential to modern living. They have the potential to replace toxic chromates for corrosion inhibition, in magnetic refrigeration, a variety of new materials, and their role in agriculture may expand. This review examines their role in sustainability, the environment, recycling, corrosion inhibition, crop production, animal feedstocks, catalysis, health, and materials, as well as considering future uses.
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Affiliation(s)
- Thomas Behrsing
- School of Chemistry, Monash University, Melbourne, VIC 3800, Australia; (T.B.); (V.L.B.); (G.B.D.)
| | - Victoria L. Blair
- School of Chemistry, Monash University, Melbourne, VIC 3800, Australia; (T.B.); (V.L.B.); (G.B.D.)
| | | | - Glen B. Deacon
- School of Chemistry, Monash University, Melbourne, VIC 3800, Australia; (T.B.); (V.L.B.); (G.B.D.)
| | - Peter C. Junk
- College of Science & Engineering, James Cook University, Townsville, QLD 4811, Australia
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Rathod AB, Borade BR, Sambherao PI, Kontham R. Bi(OTf) 3-promoted cascade annulation of hydroxy-pyranones and unsaturated γ-ketoesters for the construction of polycyclic bridged pyrano-furopyranones. Org Biomol Chem 2024; 22:496-500. [PMID: 38165227 DOI: 10.1039/d3ob01862h] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2024]
Abstract
An efficient protocol for constructing complex three dimensional polycyclic bridged chromano-furopyranones and pyrano-furopyranones (closely related to bioactive natural products) via bismuth(III)-catalyzed cascade annulation of hydroxy-pyranones and unsaturated γ-ketoesters is presented. This process involves intermolecular Michael addition, intramolecular hemiketalization, lactonization, formation of one C-C bond and two C-O bonds, rings, and contiguous stereocenters.
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Affiliation(s)
- Akshay B Rathod
- Organic Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Balasaheb R Borade
- Organic Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Pooja I Sambherao
- Organic Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
| | - Ravindar Kontham
- Organic Chemistry Division, CSIR-National Chemical Laboratory Dr Homi Bhabha Road, Pune-411008, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad-201002, India
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7
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Shen G, Zhong L, Liu G, Yang L, Wen X, Chen G, Zhao J, Hou C, Wang X. Synthesis of rare-earth metal-organic frameworks to construct high-resolution sensing array for multiplex anions detection, cell imaging and blood phosphorus monitoring. J Colloid Interface Sci 2023; 652:1925-1936. [PMID: 37690300 DOI: 10.1016/j.jcis.2023.09.010] [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: 07/06/2023] [Revised: 08/27/2023] [Accepted: 09/02/2023] [Indexed: 09/12/2023]
Abstract
Accurate detection and differentiation of multiple anions is still a difficult problem due to their wide variety, structural similarity, and mutual interference. Hence, four rare-earth metal-organic frameworks (RE-MOFs) including Dy-MOFs, Er-MOFs, Tb-MOFs and Y-MOFs are successfully prepared by using TCPP as the ligand and rare-earth ions as the metal center via coordination chelation. It is found that 7 anions can light up their fluorescence. Thus, a high-resolution sensing array based on RE-MOFs nanoprobes is employed to differentiate these anions from intricate analytes in real-time scenarios. The distinctive host-guest response promotes the RE-MOFs nanoprobes to selectively extract the target anions from the complex samples. By taking advantage of the cross-response between RE-MOFs nanoprobes and anions, it allows to create an array for detecting target analytes using pattern recognition. Additionally, RE-MOFs nanoprobes also facilitate the quantitative analysis of these anions (PO43-, H2PO4-, HPO42-, F-, S2-, CO32- and C2O42-). More importantly, the exceptional effectiveness of this method has been demonstrated through various successful applications, including quality monitoring of 8 toothpaste brands, intracellular phosphate imaging, and blood phosphorus detection in mice with vascular calcification. These findings provide robust evidence for the efficacy and reliability of the RE-MOFs nanoprobes array for anion recognition.
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Affiliation(s)
- Gongle Shen
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Linling Zhong
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Guizhu Liu
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Liu Yang
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Xin Wen
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Guanxi Chen
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China
| | - Jiangqi Zhao
- College of Materials Science and Engineering, Sichuan University, Chengdu 610065, PR China
| | - Changjun Hou
- Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, PR China
| | - Xianfeng Wang
- Wuxi School of Medicine, Jiangnan University, Wuxi 214122, PR China; Key Laboratory for Biorheological Science and Technology of Ministry of Education, State and Local Joint Engineering Laboratory for Vascular Implants, Bioengineering College of Chongqing University, Chongqing 400044, PR China.
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8
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Gholap DP, Huse R, Dipake S, Lande MK. Water compatible silica supported iron trifluoroacetate and trichloroacetate: as prominent and recyclable Lewis acid catalysts for solvent-free green synthesis of hexahydroquinoline-3-carboxamides. RSC Adv 2023; 13:23431-23448. [PMID: 37546227 PMCID: PMC10401520 DOI: 10.1039/d3ra03542e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 07/25/2023] [Indexed: 08/08/2023] Open
Abstract
Silica supported iron trifluoroacetate and iron trichloroacetate green Lewis acid catalysts were developed by a novel, cheap, environment-friendly approach and utilized in the synthesis of hexahydroquinoline-3-carboxamide derivatives. The structure and morphology of the prepared Lewis acid catalysts were studied by FTIR, PXRD, FE-SEM, HR-TEM, EDX, BET, TGA and NH3-TPD techniques. The present catalysts shows maximum conversion efficiency in hexahydroquinoline-3-carboxamide derivatives synthesis at 70 °C in solvent free reaction condition with best product yield in a short reaction time. Both catalysts are reusable and simple to recover, and perform meritoriously in water as well as in a variety of organic solvents. The key advantages of the current synthetic route are permitting of a variety of functional groups, quick reaction time, high product yield, mild reaction condition, recyclability of catalyst and solvent-free green synthesis. This makes it more convenient, economic and environmentally beneficial.
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Affiliation(s)
| | - Ramdas Huse
- Department of Chemistry, Dr Babasaheb Ambedkar Marathwada University Aurangabad Maharashtra India
| | - Sudarshan Dipake
- Department of Chemistry, Dr Babasaheb Ambedkar Marathwada University Aurangabad Maharashtra India
| | - M K Lande
- Department of Chemistry, Dr Babasaheb Ambedkar Marathwada University Aurangabad Maharashtra India
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9
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Zhang Z, Chen L, Wang Y, Dai W, Li P, Yang Z, Li X, Zheng H. Furan Synthesis via a Tandem 1,2-Acyloxy Migration/[3 + 2] Cycloaddition/Aromatization of Enol Ether-Tethered Propargylic Esters. J Org Chem 2023. [PMID: 37192482 DOI: 10.1021/acs.joc.3c00216] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/18/2023]
Abstract
An effective method for the synthesis of furans is developed via a tandem 1,2-acyloxy migration/intramolecular [3 + 2] cycloaddition/aromatization of enol ether-tethered propargylic esters. The reaction exhibits excellent functional group tolerance, broad substrate scope, and excellent chemoselectivity. The isolation of dihydrofuran intermediates in some cases gives more insight into the [3 + 2] cycloisomerization process.
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Affiliation(s)
- Zhiqiang Zhang
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Luxin Chen
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Ying Wang
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Weikai Dai
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Pengfei Li
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Zhen Yang
- Zhejiang Key Laboratory of Alternative Technologies for Fine Chemicals Process, College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
- Research Center of Advanced Catalytic Materials & Functional Molecular Synthesis, College of Chemistry & Chemical Engineering, Shaoxing University, Shaoxing 312000, China
| | - Xiuhuan Li
- State Key Laboratory of Crop Stress Biology for Arid Areas, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
| | - Huaiji Zheng
- Shaanxi Key Laboratory of Natural Products & Chemical Biology, College of Chemistry & Pharmacy, Northwest Agriculture & Forestry University, 3 Taicheng Road, Yangling 712100, China
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10
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Chang MY, Lin CY. One-pot synthesis of sulfonyl dibenzosuberdiones via In(OTf) 3-promoted double Friedel-Crafts reactions of oxygenated arylacetic acids with β-arylvinyl sulfones. Org Biomol Chem 2023; 21:2405-2416. [PMID: 36857673 DOI: 10.1039/d3ob00149k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Under open-vessel atmosphere conditions, a one-pot easy-to-operate method for the construction of diverse sulfonyl dibenzosuberdiones is developed via In(OTf)3-promoted tandem double Friedel-Crafts reactions of oxygenated arylacetic acids with β-arylvinyl sulfones. A plausible mechanism is proposed and discussed in detail. This protocol allows for highly effective sequential intermolecular Michael addition, intramolecular ring-closure and α-benzylic oxidation via the formation of two carbon-carbon single (C-C) bonds and one carbon-oxygen double (CO) bond.
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Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan. .,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan.,NPUST College of Professional Studies, National Pingtung University of Science and Technology, Pingtung 912, Taiwan
| | - Chun-Yi Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
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11
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Hayes G, Laurel M, MacKinnon D, Zhao T, Houck HA, Becer CR. Polymers without Petrochemicals: Sustainable Routes to Conventional Monomers. Chem Rev 2023; 123:2609-2734. [PMID: 36227737 PMCID: PMC9999446 DOI: 10.1021/acs.chemrev.2c00354] [Citation(s) in RCA: 27] [Impact Index Per Article: 27.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2022] [Indexed: 11/28/2022]
Abstract
Access to a wide range of plastic materials has been rationalized by the increased demand from growing populations and the development of high-throughput production systems. Plastic materials at low costs with reliable properties have been utilized in many everyday products. Multibillion-dollar companies are established around these plastic materials, and each polymer takes years to optimize, secure intellectual property, comply with the regulatory bodies such as the Registration, Evaluation, Authorisation and Restriction of Chemicals and the Environmental Protection Agency and develop consumer confidence. Therefore, developing a fully sustainable new plastic material with even a slightly different chemical structure is a costly and long process. Hence, the production of the common plastic materials with exactly the same chemical structures that does not require any new registration processes better reflects the reality of how to address the critical future of sustainable plastics. In this review, we have highlighted the very recent examples on the synthesis of common monomers using chemicals from sustainable feedstocks that can be used as a like-for-like substitute to prepare conventional petrochemical-free thermoplastics.
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Affiliation(s)
- Graham Hayes
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - Matthew Laurel
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - Dan MacKinnon
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - Tieshuai Zhao
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - Hannes A. Houck
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
- Institute
of Advanced Study, University of Warwick, CV4 7ALCoventry, United Kingdom
| | - C. Remzi Becer
- Department
of Chemistry, University of Warwick, CV4 7ALCoventry, United Kingdom
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12
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Penk DN, Endres EJ, Nuriye AY, Macdonald JE. Dependence of Transition-Metal Telluride Phases on Metal Precursor Reactivity and Mechanistic Implications. Inorg Chem 2023; 62:3947-3956. [PMID: 36802520 DOI: 10.1021/acs.inorgchem.2c04342] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
Modern bottom-up synthesis to nanocrystalline solid-state materials often lacks the reasoned product control that molecular chemistry boasts from having over a century of research and development. In this study, six transition metals including iron, cobalt, nickel, ruthenium, palladium, and platinum were reacted with the mild reagent didodecyl ditelluride in their acetylacetonate, chloride, bromide, iodide, and triflate salts. This systematic analysis demonstrates how rationally matching the reactivity of metal salts to the telluride precursor is necessary for the successful production of metal tellurides. The trends in reactivity suggest that radical stability is the better predictor of metal salt reactivity than hard-soft acid-base theory. Of the six transition-metal tellurides, the first colloidal syntheses of iron and ruthenium tellurides (FeTe2 and RuTe2) are reported.
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Affiliation(s)
| | | | - Ahmed Y Nuriye
- Department of Chemistry, The Pennsylvania State University, Abington, Pennsylvania 19001, United States
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13
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Hasan MN, Salman MS, Hasan MM, Kubra KT, Sheikh MC, Rehan AI, Rasee AI, Awual ME, Waliullah R, Hossain MS, Islam A, Khandaker S, Alsukaibi AK, Alshammari HM, Awual MR. Assessing sustainable Lutetium(III) ions adsorption and recovery using novel composite hybrid nanomaterials. J Mol Struct 2023. [DOI: 10.1016/j.molstruc.2022.134795] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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14
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Mortis A, Maichle-Mössmer C, Anwander R. Distinct Reactivity of Trimethylytterbium toward AlMe 3 and GaMe 3 : Synthesis of Donor-Stabilized Dimethylytterbium. Chemistry 2023; 29:e202203824. [PMID: 36688627 DOI: 10.1002/chem.202203824] [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: 12/07/2022] [Revised: 01/13/2023] [Accepted: 01/23/2023] [Indexed: 01/24/2023]
Abstract
Me3 TACN (1,4,7-trimethyl-1,4,7-triazacyclononane)-stabilized trimethylytterbium was obtained via a salt-metathesis protocol employing [(Me3 TACN)YbCl3 ] and methyllithium. Complex [(Me3 TACN)YbMe3 ] seems not to engage in redox chemistry with potassium graphite and is thermally quite stable in the solid state. Treatment of trivalent [(Me3 TACN)YbMe3 ] with 3 equiv. of AlMe3 afforded divalent tetramethylaluminate complex [(Me3 TACN)Yb(AlMe4 )2 ]. The reaction of [(Me3 TACN)YbMe3 ] with GaMe3 in THF gave trivalent ion pair [(Me3 TACN)YbMe2 (thf)][GaMe4 ], which is susceptible to reduction with KC8 . The thermally very labile divalent [(Me3 TACN)YbMe(μ-Me)]2 is the first discrete donor adduct of a divalent dimethyl rare-earth-metal complex.
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Affiliation(s)
- Alexandros Mortis
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | - Cäcilia Maichle-Mössmer
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
| | - Reiner Anwander
- Institut für Anorganische Chemie, Eberhard Karls Universität Tübingen, Auf der Morgenstelle 18, 72076, Tübingen, Germany
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15
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Gholap DP, Huse R, Dipake S, Lande MK. Silica supported lanthanum trifluoroacetate and trichloroacetate as an efficient and reusable water compatible Lewis acid catalyst for synthesis of 2,4,5-triarylimidazoles via a solvent-free green approach. RSC Adv 2023; 13:2090-2103. [PMID: 36712612 PMCID: PMC9832349 DOI: 10.1039/d2ra07021a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Accepted: 12/10/2022] [Indexed: 01/13/2023] Open
Abstract
In the present research article, we have developed solid heterogenous silica supported lanthanum trifluoroacetate and trichloroacetate as green Lewis acid catalysts. These catalysts were synthesized by a novel, simple, cheap, clean, and environment friendly method. The physicochemical properties of the prepared catalysts were well studied and characterized by sophisticated spectroscopic techniques such as FTIR, TGA, XRD, EDX, SEM, TEM and BET analysis. The catalyst was utilized in the synthesis of arylimidazole derivatives via green protocols under solvent-free conditions at 70 °C with a higher yield, mild reaction conditions and a short reaction time. The catalyst works superiorly in water as well as in various organic solvents as a reusable and easily recoverable catalyst.
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Affiliation(s)
| | - Ramdas Huse
- Department of Chemistry, Dr Babasaheb Ambedkar Marathwada University Aurangabad Maharashtra India
| | - Sudarshan Dipake
- Department of Chemistry, Dr Babasaheb Ambedkar Marathwada University Aurangabad Maharashtra India
| | - Machhindra K Lande
- Department of Chemistry, Dr Babasaheb Ambedkar Marathwada University Aurangabad Maharashtra India
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16
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Qin H, Jin C, Odilov A, Mintah Bonku E, Zhu F, Liu Q, Shen J, Aisa HA. Optimized Synthesis of a Key Intermediate of Nirmatrelvir. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.2c00225] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Hongjian Qin
- Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi, Xinjiang 830011, P. R. China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China
| | - Chen Jin
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu 210023, P. R. China
| | - Abdullajon Odilov
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Emmanuel Mintah Bonku
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Fuqiang Zhu
- Topharman Shanghai Co., Ltd., No. 388 Jialilue Road, Zhangjiang Hitech Park, Shanghai 201203, P. R. China
| | - Qi Liu
- Topharman Shanghai Co., Ltd., No. 388 Jialilue Road, Zhangjiang Hitech Park, Shanghai 201203, P. R. China
| | - Jingshan Shen
- School of Chinese Materia Medica, Nanjing University of Chinese Medicine, 138 Xianlin Road, Nanjing, Jiangsu 210023, P. R. China
- Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 555 Zuchongzhi Road, Shanghai 201203, P. R. China
| | - Haji A. Aisa
- Key Laboratory of Plant Resources and Chemistry in Arid Regions, Xinjiang Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, South Beijing Road 40-1, Urumqi, Xinjiang 830011, P. R. China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, P. R. China
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17
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Su Z, Wang S. Construction of 4-Acyl-2-quinolones through Sc(OTf) 3-Catalyzed Ring-Closing Alkyne-Carbonyl Metathesis. J Org Chem 2022; 87:16873-16881. [PMID: 36413958 DOI: 10.1021/acs.joc.2c02077] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
Abstract
An atom-economical protocol to construct densely substituted 4-acyl-2-quinolones from N-(2-alkynylphenyl)-α-ketoamides has been developed through Sc(OTf)3-catalyzed ring-closing alkyne-carbonyl metathesis. Mechanistic experimental studies support that coordinative interaction between Sc(OTf))3 and the substrate, the formation of an oxetene intermediate, and an electrocyclic ring-opening of the oxetene might be involved.
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Affiliation(s)
- Zhenjie Su
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
| | - Shaozhong Wang
- State Key Laboratory of Coordination Chemistry, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210023, China
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18
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Continuous flow synthesis of HMF from glucose using gadolinium (III) trifluoromethanesulfonate in Brønsted acidic ionic liquid as a catalytic system. J Flow Chem 2022. [DOI: 10.1007/s41981-022-00250-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/03/2022]
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19
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2-Benzyl-3-morpholino-7-(thiophen-2-yl)-6-(thiophen-2-ylmethyl)-6,7-dihydro-5H-pyrrolo[3,4-b]pyridin-5-one. MOLBANK 2022. [DOI: 10.3390/m1503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022] Open
Abstract
The new polyheterocyclic compound 2-benzyl-3-morpholino-7-(thiophen-2-yl)-6-(thiophen-2-ylmethyl)-6,7-dihydro-5H-pyrrolo[3,4-b]pyridin-5-one (1) was synthesized via a one-pot process involving an Ugi-Zhu three-component reaction coupled to a cascade aza-Diels-Alder cycloaddition/N-acylation/decarboxylation/dehydration process, using toluene as the solvent, ytterbium (III) triflate as the Lewis acid catalyst, and microwave-dielectric heating to increase the overall yield by up to 73%, while decreasing the reaction time to less than one hour. Product 1 was fully characterized by its physicochemical properties and using spectroscopic techniques (IR, HRMS and NMR).
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20
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Substrate-Dependent Selectivity in Sc(OTf)3-Catalyzed Cyclization of Alkenoic Acids and N-Protected Alkenamides. Catalysts 2022. [DOI: 10.3390/catal12111481] [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] Open
Abstract
Five- and six-membered ring lactones and lactams are ubiquitous frameworks in various natural and synthetic molecules and are key building blocks in organic synthesis. Catalytic addition of an O-H or N-H bond across an unactivated C–C double bond is an appealing approach to rapidly access such highly valuable N- and O-containing skeletons in a waste-free and 100% atom efficient process. Herein, we report, for the first time, the efficient and high-yield cyclization of δ/ε-alkenoic acids and N-protected δ-alkenamides catalyzedby practical and easily accessible Lewis acid scandium(III) triflate under thermal and microwave conditions. The selectivity outcome of the reaction of δ/ε-alkenoic acids was dependent on the substitution patterns of the backbone chain and alkene moiety, leading to the exclusive formation of either the corresponding γ/δ-lactones via an O-selective cyclization or the Friedel–Crafts-type product by C-selective cyclization. An uncommon and rarely disclosed O-selective cyclization occurred preferentially or exclusively when N-protected δ-alkenamides were engaged in the reaction. The atom selectivity of the cyclization was unambiguously confirmed by single crystal X-ray crystallography.
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21
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Pandey P, Yu X, Panetti GB, Lapsheva E, Gau MR, Carroll PJ, Autschbach J, Schelter EJ. Synthesis, Electrochemical, and Computational Studies of Organocerium(III) Complexes with Ce–Aryl Sigma Bonds. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Pragati Pandey
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104, United States
| | - Xiaojuan Yu
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Grace B. Panetti
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104, United States
| | - Ekaterina Lapsheva
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104, United States
| | - Michael R. Gau
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104, United States
| | - Patrick J. Carroll
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104, United States
| | - Jochen Autschbach
- Department of Chemistry, University at Buffalo, State University of New York, Buffalo, New York 14260, United States
| | - Eric J. Schelter
- P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34 Street, Philadelphia, Pennsylvania 19104, United States
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22
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Kutrakul N, Liu A, Ratchahat S, Posoknistakul P, Laosiripojana N, Wu KCW, Sakdaronnarong C. Highly selective catalytic conversion of raw sugar and sugarcane bagasse to lactic acid over YbCl3, ErCl3, and CeCl3 Lewis acid catalysts without alkaline in a hot-compressed water reaction system. Chem Eng Res Des 2022. [DOI: 10.1016/j.cherd.2022.09.014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
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23
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Lueckheide MJ, Ertem MZ, Michon MA, Chmielniak P, Robinson JR. Peroxide-Selective Reduction of O 2 at Redox-Inactive Rare-Earth(III) Triflates Generates an Ambiphilic Peroxide. J Am Chem Soc 2022; 144:17295-17306. [PMID: 36083877 DOI: 10.1021/jacs.2c08140] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Metal peroxides are key species involved in a range of critical biological and synthetic processes. Rare-earth (group III and the lanthanides; Sc, Y, La-Lu) peroxides have been implicated as reactive intermediates in catalysis; however, reactivity studies of isolated, structurally characterized rare-earth peroxides have been limited. Herein, we report the peroxide-selective (93-99% O22-) reduction of dioxygen (O2) at redox-inactive rare-earth triflates in methanol using a mild metallocene reductant, decamethylferrocene (Fc*). The first molecular praseodymium peroxide ([PrIII2(O22-)(18C6)2(EG)2][OTf]4; 18C6 = 18-crown-6, EG = ethylene glycol, -OTf = -O3SCF3; 2-Pr) was isolated and characterized by single-crystal X-ray diffraction, Raman spectroscopy, and NMR spectroscopy. 2-Pr displays high thermal stability (120 °C, 50 mTorr), is protonated by mild organic acids [pKa1(MeOH) = 5.09 ± 0.23], and engages in electrophilic (e.g., oxygen atom transfer) and nucleophilic (e.g., phosphate-ester cleavage) reactivity. Our mechanistic studies reveal that the rate of oxygen reduction is dictated by metal-ion accessibility, rather than Lewis acidity, and suggest new opportunities for differentiated reactivity of redox-inactive metal ions by leveraging weak metal-ligand binding events preceding electron transfer.
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Affiliation(s)
- Matthew J Lueckheide
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Mehmed Z Ertem
- Chemistry Division, Energy & Photon Sciences, Brookhaven National Laboratory, Upton, New York 11973, United States
| | - Michael A Michon
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Pawel Chmielniak
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
| | - Jerome R Robinson
- Department of Chemistry, Brown University, Providence, Rhode Island 02912, United States
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24
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Demay-Drouhard P, Gaffen JR, Caputo CB, Baumgartner T. Fluorescence-based measurement of the Lewis acidities of lanthanide triflates in solution. CAN J CHEM 2022. [DOI: 10.1139/cjc-2022-0115] [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
Despite the prominence of rare-earth complexes to act as Lewis acid catalysts in organic synthesis, the comprehensive measure of the Lewis acid strength of such compounds has yet to be performed due to incompatibilities with existing methods. We report our results in measurement of a sequence of lanthanide triflates via our recently established fluorescent Lewis adduct (FLA) method. The persistence in solution of these Lewis acids as solvated coordination complexes is accurately measurable by the FLA method. However, several of the rare-earth species exhibit fluorescence quenching, which may potentially inhibit the measurement. Nevertheless, meaningful FLA measurements were still possible, and the results correspond to both periodic trends and were even consistent with previous correlated reported data.
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Affiliation(s)
- Paul Demay-Drouhard
- Department of Chemistry, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
| | - Joshua R. Gaffen
- Department of Chemistry, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
| | - Christopher B. Caputo
- Department of Chemistry, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
| | - Thomas Baumgartner
- Department of Chemistry, York University, 4700 Keele Street, Toronto, ON M3J 1P3, Canada
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25
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Takumi M, Sakaue H, Shibasaki D, Nagaki A. Rapid access to organic triflates based on flash generation of unstable sulfonium triflates in flow. Chem Commun (Camb) 2022; 58:8344-8347. [PMID: 35797717 DOI: 10.1039/d2cc02344j] [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
Flash (extremely fast) electrochemical generation of unstable arylbis(arylthio)sulfonium triflates [ArS(ArSSAr)]+ [OTf]- that are unsuitable for accumulation in batch processes was achieved within 10 s in a divided-type flow electrochemcial reactor, enabling one-flow access to vinyl triflates, short-lived oxocarbenium triflates and glycosyl triflates.
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Affiliation(s)
- Masahiro Takumi
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Hodaka Sakaue
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Daiki Shibasaki
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
| | - Aiichiro Nagaki
- Department of Synthetic Chemistry and Biological Chemistry, Graduate School of Engineering, Kyoto University, Kyoto, 615-8510, Japan
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26
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Chang MY, Lin CY, Chen SM. Synthesis of 1‐Aryl Isoquinolinones or o‐Diaryl Pyrimidines via Bismuth Triflate‐Mediated Intermolecular Annulation of Arylacetic Acids with Nitroarylaldehydes or Trimethoxybenzene in the Presence of Acetonitrile. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200517] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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27
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Fujinaga M, Ohkubo T, Yamasaki T, Kumata K, Nengaki N, Zhang MR. Scandium Triflate-Catalyzed N-[ 18F]Fluoroalkylation of Aryl- Or Heteroaryl-Amines with [ 18F]Epifluorohydrin under Mild Conditions. Org Lett 2022; 24:4024-4028. [PMID: 35613453 DOI: 10.1021/acs.orglett.2c01459] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The scandium triflate-catalyzed N-[18F]fluoroalkylation of aryl- or heteroaryl-amines with [18F]epifluorohydrin ([18F]2) was investigated. This reaction is mild and provides one-step access to N-[18F]fluoroalkylated aryl- or heteroaryl-amines, which are used for positron emission tomography imaging. The use of 2,2,2-trifluoroethanol as a cosolvent improved the reaction efficiency. The use of (S)- and (R)-[18F]2 produced the corresponding enantiomeric N-[18F]fluoroalkylated anilines.
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Affiliation(s)
- Masayuki Fujinaga
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, Chiba 263-8555, Japan
| | - Takayuki Ohkubo
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, Chiba 263-8555, Japan.,SHI Accelerator Service Ltd., 1-17-6 Osaki, Shinagawa-ku, Tokyo 141-0032, Japan
| | - Tomoteru Yamasaki
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, Chiba 263-8555, Japan
| | - Katsushi Kumata
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, Chiba 263-8555, Japan
| | - Nobuki Nengaki
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, Chiba 263-8555, Japan.,SHI Accelerator Service Ltd., 1-17-6 Osaki, Shinagawa-ku, Tokyo 141-0032, Japan
| | - Ming-Rong Zhang
- Department of Advanced Nuclear Medicine Sciences, Institute for Quantum Medical Science, National Institutes for Quantum Science and Technology, 4-9-1 Anagawa, Inage-ku, Chiba, Chiba 263-8555, Japan
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28
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Stevens AC, Brak K, Bremner WS, Brown AM, Chtchemelinine A, Heumann L, Kerschen JA, Subotkowski W, Vieira T, Wolfe LC, Xu B, Yu CY. Development of a Scalable Lanthanide Halide/Quaternary Ammonium Salt System for the Nucleophilic Addition of Grignard Reagents to Carbonyl Groups and Application to the Synthesis of a Remdesivir Intermediate. Org Process Res Dev 2022. [DOI: 10.1021/acs.oprd.1c00191] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Andrew C. Stevens
- Gilead Alberta ULC, 1021 Hayter Road, Edmonton, Alberta T6S 1A1, Canada
| | - Katrien Brak
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - W. Stacy Bremner
- Gilead Alberta ULC, 1021 Hayter Road, Edmonton, Alberta T6S 1A1, Canada
| | - Angela M. Brown
- J-Star Research Inc., 3001 Hadley Road #3, South Plainsfield, New Jersey 07080, United States
| | - Andrei Chtchemelinine
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Lars Heumann
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - James A. Kerschen
- J-Star Research Inc., 3001 Hadley Road #3, South Plainsfield, New Jersey 07080, United States
| | - Witold Subotkowski
- J-Star Research Inc., 3001 Hadley Road #3, South Plainsfield, New Jersey 07080, United States
| | - Tiago Vieira
- Gilead Alberta ULC, 1021 Hayter Road, Edmonton, Alberta T6S 1A1, Canada
| | - Lydia C. Wolfe
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
| | - Boran Xu
- Gilead Alberta ULC, 1021 Hayter Road, Edmonton, Alberta T6S 1A1, Canada
| | - Chia-Yun Yu
- Gilead Sciences, Inc., 333 Lakeside Drive, Foster City, California 94404, United States
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29
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Zegke M, Grödler D, Roca Jungfer M, Haseloer A, Kreuter M, Neudörfl JM, Sittel T, James CM, Rothe J, Altmaier M, Klein A, Breugst M, Abram U, Strub E, Wickleder MS. Ammonium Pertechnetate in Mixtures of Trifluoromethanesulfonic Acid and Trifluoromethanesulfonic Anhydride. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Markus Zegke
- University of Cologne Department of Chemistry Institute for Inorganic Chemistry Greinstrasse 4–6 50939 Cologne Germany
| | - Dennis Grödler
- University of Cologne Department of Chemistry Institute for Inorganic Chemistry Greinstrasse 4–6 50939 Cologne Germany
| | - Maximilian Roca Jungfer
- Freie Universität Berlin Institute for Chemistry and Biochemistry Inorganic Chemistry Fabeckstrasse 34–36 14195 Berlin Germany
| | - Alexander Haseloer
- University of Cologne Department of Chemistry Institute for Inorganic Chemistry Greinstrasse 4–6 50939 Cologne Germany
| | - Meike Kreuter
- University of Cologne Department of Chemistry Division of Nuclear Chemistry Zülpicher Strasse 45 50674 Cologne Germany
| | - Jörg M. Neudörfl
- University of Cologne Department of Chemistry Institute for Organic Chemistry Greinstrasse 4–6 50939 Cologne Germany
| | - Thomas Sittel
- Karlsruhe Institute of Technology Institute for Nuclear Waste Disposal Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Christopher M. James
- University of Cologne Department of Chemistry Institute for Inorganic Chemistry Greinstrasse 4–6 50939 Cologne Germany
| | - Jörg Rothe
- Karlsruhe Institute of Technology Institute for Nuclear Waste Disposal Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Marcus Altmaier
- Karlsruhe Institute of Technology Institute for Nuclear Waste Disposal Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Axel Klein
- University of Cologne Department of Chemistry Institute for Inorganic Chemistry Greinstrasse 4–6 50939 Cologne Germany
| | - Martin Breugst
- University of Cologne Department of Chemistry Institute for Organic Chemistry Greinstrasse 4–6 50939 Cologne Germany
| | - Ulrich Abram
- Freie Universität Berlin Institute for Chemistry and Biochemistry Inorganic Chemistry Fabeckstrasse 34–36 14195 Berlin Germany
| | - Erik Strub
- University of Cologne Department of Chemistry Division of Nuclear Chemistry Zülpicher Strasse 45 50674 Cologne Germany
| | - Mathias S. Wickleder
- University of Cologne Department of Chemistry Institute for Inorganic Chemistry Greinstrasse 4–6 50939 Cologne Germany
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30
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Zegke M, Grödler D, Roca Jungfer M, Haseloer A, Kreuter M, Neudörfl JM, Sittel T, James CM, Rothe J, Altmaier M, Klein A, Breugst M, Abram U, Strub E, Wickleder MS. Ammonium Pertechnetate in Mixtures of Trifluoromethanesulfonic Acid and Trifluoromethanesulfonic Anhydride. Angew Chem Int Ed Engl 2022; 61:e202113777. [PMID: 34752692 PMCID: PMC9299680 DOI: 10.1002/anie.202113777] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2021] [Indexed: 11/14/2022]
Abstract
Ammonium pertechnetate reacts in mixtures of trifluoromethanesulfonic anhydride and trifluoromethanesulfonic acid under final formation of ammonium pentakis(trifluoromethanesulfonato)oxidotechnetate(V), (NH4 )2 [TcO(OTf)5 ]. The reaction proceeds only at exact concentrations and under the exclusion of air and moisture via pertechnetyl trifluoromethanesulfonate, [TcO3 (OTf)], and intermediate TcVI species. 99 Tc nuclear magnetic resonance (NMR) has been used to study the TcVII compound and electron paramagnetic resonance (EPR), 99 Tc NMR and X-ray absorption near-edge structure (XANES) experiments indicate the presence of the reduced technetium species. In moist air, (NH4 )2 [TcO(OTf)5 ] slowly hydrolyses under formation of the tetrameric oxidotechnetate(V) (NH4 )4 [{TcO(TcO4 )4 }4 ] ⋅10 H2 O. Single-crystal X-ray crystallography was used to determine the solid-state structures. Additionally, UV/Vis absorption and IR spectra as well as quantum chemical calculations confirm the identity of the species.
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Affiliation(s)
- Markus Zegke
- University of CologneDepartment of ChemistryInstitute for Inorganic ChemistryGreinstrasse 4–650939CologneGermany
| | - Dennis Grödler
- University of CologneDepartment of ChemistryInstitute for Inorganic ChemistryGreinstrasse 4–650939CologneGermany
| | - Maximilian Roca Jungfer
- Freie Universität BerlinInstitute for Chemistry and BiochemistryInorganic ChemistryFabeckstrasse 34–3614195BerlinGermany
| | - Alexander Haseloer
- University of CologneDepartment of ChemistryInstitute for Inorganic ChemistryGreinstrasse 4–650939CologneGermany
| | - Meike Kreuter
- University of CologneDepartment of ChemistryDivision of Nuclear ChemistryZülpicher Strasse 4550674CologneGermany
| | - Jörg M. Neudörfl
- University of CologneDepartment of ChemistryInstitute for Organic ChemistryGreinstrasse 4–650939CologneGermany
| | - Thomas Sittel
- Karlsruhe Institute of TechnologyInstitute for Nuclear Waste DisposalHermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
| | - Christopher M. James
- University of CologneDepartment of ChemistryInstitute for Inorganic ChemistryGreinstrasse 4–650939CologneGermany
| | - Jörg Rothe
- Karlsruhe Institute of TechnologyInstitute for Nuclear Waste DisposalHermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
| | - Marcus Altmaier
- Karlsruhe Institute of TechnologyInstitute for Nuclear Waste DisposalHermann-von-Helmholtz-Platz 176344Eggenstein-LeopoldshafenGermany
| | - Axel Klein
- University of CologneDepartment of ChemistryInstitute for Inorganic ChemistryGreinstrasse 4–650939CologneGermany
| | - Martin Breugst
- University of CologneDepartment of ChemistryInstitute for Organic ChemistryGreinstrasse 4–650939CologneGermany
| | - Ulrich Abram
- Freie Universität BerlinInstitute for Chemistry and BiochemistryInorganic ChemistryFabeckstrasse 34–3614195BerlinGermany
| | - Erik Strub
- University of CologneDepartment of ChemistryDivision of Nuclear ChemistryZülpicher Strasse 4550674CologneGermany
| | - Mathias S. Wickleder
- University of CologneDepartment of ChemistryInstitute for Inorganic ChemistryGreinstrasse 4–650939CologneGermany
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31
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Qiu H, Shen T, Yang Z, Wu F, Li X, Tu Y, Ling J. Janus Polymerization: A
One‐Shot
Approach towards Amphiphilic Multiblock Poly(ester‐acetal)s Directly from 1,
3‐Dioxolane
with
ε
‐Caprolactone. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100782] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Huan Qiu
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
| | - Ting Shen
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
| | - Zhening Yang
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
| | - Feng Wu
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China
| | - Xiaohong Li
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China
| | - Yingfeng Tu
- College of Chemistry, Chemical Engineering and Materials Science Soochow University Suzhou Jiangsu 215123 China
| | - Jun Ling
- MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering Zhejiang University Hangzhou Zhejiang 310027 China
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32
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Gruszka W, Garden JA. Salt additives as activity boosters: a simple strategy to access heterometallic cooperativity in lactide polymerisation. Chem Commun (Camb) 2022; 58:1609-1612. [PMID: 35018909 DOI: 10.1039/d1cc06594g] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Inorganic salt additives can activate carbonyl groups towards organic addition reactions. Here, we translate this concept to ring-opening polymerisation for the first time, generating heterometallic ProPhenol catalysts in situ, which show similar activity enhancements to pre-formed heterometallic complexes. Extremely high activities are observed, with K/Mg and K/Ca combinations converting >85 eq. lactide in 5 s at room temperature.
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Affiliation(s)
- Weronika Gruszka
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
| | - Jennifer A Garden
- EaStCHEM School of Chemistry, University of Edinburgh, Edinburgh, EH9 3FJ, UK.
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33
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Prieto A, Jaroschik F. Recent Applications of Rare Earth Complexes in Photoredox Catalysis for Organic
Synthesis. CURR ORG CHEM 2022. [DOI: 10.2174/1385272825666211126123928] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
:
In recent years, photoredox catalysis has appeared as a new paradigm for forging a
wide range of chemical bonds under mild conditions using abundant reagents. This approach
allows many organic transformations through the generation of various radical species, enabling
the valorization of non-traditional partners. A continuing interest has been devoted to
the discovery of novel radical-generating procedures. Over the last ten years, strategies using
rare-earth complexes as either redox-active centers or as redox-neutral Lewis acids have
emerged. This review provides an overview of the recent accomplishments made in this field.
It especially aims to demonstrate the utility of rare-earth complexes for ensuring photocatalytic
transformations and to inspire future developments.
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Affiliation(s)
- Alexis Prieto
- ICGM, Univ Montpellier, CNRS, ENSCM, Montpellier, France
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34
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Basu D, Nayek HP. Bis(catecholato)germane: An Effective Catalyst for Friedel-Crafts Alkylation Reaction. Dalton Trans 2022; 51:10587-10594. [DOI: 10.1039/d2dt01721k] [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
Bis(catecholato)germane, [Ge(C6H4O2)2(H2O)2] (1) was synthesized by the reaction of catechol and germanium oxide in water according to a reported method. Complex 1 was characterized by FT-IR spectroscopy, NMR spectroscopy and...
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35
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Chen Z, Yan K, Luo H, Yan J, Zeng Y. Lewis acid-catalyzed [4 + 2] cycloaddition of donor–acceptor cyclobutanes with iminooxindoles: access to spiro[piperidine-3,2′-oxindoles]. RSC Adv 2022; 12:32097-32101. [DOI: 10.1039/d2ra04730f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 10/27/2022] [Indexed: 11/10/2022] Open
Abstract
A Lewis acid-catalyzed [4 + 2] cycloaddition reaction from D–A cyclobutanes and iminooxindoles, providing the corresponding spiro[piperidine-3,2′-oxindoles] under mild conditions.
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Affiliation(s)
- Zuliang Chen
- College of Chemistry and Bio-engineering, Yichun University, Yichun 336000, P. R. China
- Key Laboratory of Jiangxi University for Applied Chenistry and Chemical Biology, Yichun University, 336000, P. R. China
| | - Keyi Yan
- College of Chemistry and Bio-engineering, Yichun University, Yichun 336000, P. R. China
| | - Hui Luo
- College of Chemistry and Bio-engineering, Yichun University, Yichun 336000, P. R. China
| | - Jun Yan
- College of Chemistry and Bio-engineering, Yichun University, Yichun 336000, P. R. China
| | - Yang Zeng
- College of Chemistry and Bio-engineering, Yichun University, Yichun 336000, P. R. China
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36
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Wu C, Wan J, Song C, He L, Liu H, Li X, Li J, Hu XG, Xiao HP, Jiang J. Yb(OTf) 3 catalyzed [1,3]-rearrangement of 3-alkenyl oxindoles. Org Biomol Chem 2021; 20:122-126. [PMID: 34874368 DOI: 10.1039/d0ob02032j] [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
A Yb(OTf)3 catalyzed [1,3]-rearrangement of 3-alkenyl oxindoles was achieved, affording a variety of multifunctional 3-ylideneoxindoles with good yields and Z/E selectivities (64%-89% yield, 78 : 22->99 : 1 Z/E). Importantly, an operationally simple, one-pot sequential catalytic synthesis of 3-ylideneoxindoles was also developed. Additionally, a cross [1,3]-rearrangement experiment and nonracemic transformation were also carried out, which indicated a concerted rearrangement mechanism of this methodology.
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Affiliation(s)
- Chaofei Wu
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
| | - Junlin Wan
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
| | - Chao Song
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
| | - Lingchen He
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
| | - Hongxin Liu
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
| | - Xinhua Li
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
| | - Juan Li
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
| | - Xin-Gen Hu
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
| | - Hong-Ping Xiao
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
| | - Jun Jiang
- College of Chemistry and Materials Science, Wenzhou University, Wenzhou 325035, PR China.
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37
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Bedard N, Foley C, Davis GJ, Jewett JC, Hulme C. Sequential Knoevenagel [4+1] Cycloaddition-Condensation-Aza-Friedel-Crafts Intramolecular Cyclization: A 4-Center-3-Component Reaction Toward Tunable Fluorescent Indolizine Tetracycles. J Org Chem 2021; 86:17550-17559. [PMID: 34818017 DOI: 10.1021/acs.joc.1c01280] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A two-step multicomponent reaction oxidation protocol is reported herein, which affords novel tunable fluorescent tetracyclic indolizines. The procedure involves a novel 4-center-3-component reaction, which proceeds via a sequential Knoevenagel condensation, [4+1] cycloaddition, and imine condensation to afford imino-indolizines. Products then undergo cyclization and are oxidized in situ to afford fluorescent tetracycles, which are readily tunable through modification of diversity elements.
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Affiliation(s)
- Nathan Bedard
- Department of Chemistry & Biochemistry, College of Science, The University of Arizona, Tucson, Arizona 85721, United States
| | - Christopher Foley
- Department of Chemistry & Biochemistry, College of Science, The University of Arizona, Tucson, Arizona 85721, United States
| | - Garrett J Davis
- Department of Chemistry & Biochemistry, College of Science, The University of Arizona, Tucson, Arizona 85721, United States
| | - John C Jewett
- Department of Chemistry & Biochemistry, College of Science, The University of Arizona, Tucson, Arizona 85721, United States
| | - Christopher Hulme
- Department of Chemistry & Biochemistry, College of Science, The University of Arizona, Tucson, Arizona 85721, United States.,Department of Pharm./Tox., College of Pharmacy, The University of Arizona, Tucson, Arizona 85721, United States
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38
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Saito Y, Kobayashi S. Chiral Heterogeneous Scandium Lewis Acid Catalysts for Continuous‐Flow Enantioselective Friedel–Crafts Carbon–Carbon Bond‐Forming Reactions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202112797] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yuki Saito
- Department of Chemistry School of Science The University of Tokyo 7-3-1, Hongo, Bunkyo-ku Tokyo Japan
| | - Shū Kobayashi
- Department of Chemistry School of Science The University of Tokyo 7-3-1, Hongo, Bunkyo-ku Tokyo Japan
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39
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Saito Y, Kobayashi S. Chiral Heterogeneous Scandium Lewis Acid Catalysts for Continuous-Flow Enantioselective Friedel-Crafts Carbon-Carbon Bond-Forming Reactions. Angew Chem Int Ed Engl 2021; 60:26566-26570. [PMID: 34661969 DOI: 10.1002/anie.202112797] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Revised: 10/17/2021] [Indexed: 11/11/2022]
Abstract
While continuous-flow reactions with chiral heterogeneous catalysts provide a highly efficient method to synthesize optically active compounds, chiral heterogeneous Lewis acid catalysis has been less extensively explored. We have developed the first example of chiral heterogeneous Sc catalysts, which demonstrated excellent activity and selectivity for continuous-flow enantioselective Friedel-Crafts reactions of isatins with indoles. Noncovalent interactions between chiral Sc complexes and heteropoly acid-anchored amine-functionalized SiO2 as support were utilized for the synthesis. The heteropoly acid was found to be crucial for the preparation, activity, and selectivity of the catalysts. The chiral ligand could be easily tuned without chemical modification and the continuous-flow synthesis of a biologically active compound was achieved.
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Affiliation(s)
- Yuki Saito
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
| | - Shū Kobayashi
- Department of Chemistry, School of Science, The University of Tokyo, 7-3-1, Hongo, Bunkyo-ku, Tokyo, Japan
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40
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Kobylarski M, Monsigny L, Thuéry P, Berthet JC, Cantat T. Uranyl(VI) Triflate as Catalyst for the Meerwein-Ponndorf-Verley Reaction. Inorg Chem 2021; 60:16140-16148. [PMID: 34647730 DOI: 10.1021/acs.inorgchem.1c01798] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Catalytic transformation of oxygenated compounds is challenging in f-element chemistry due to the high oxophilicity of the f-block metals. We report here the first Meerwein-Ponndorf-Verley (MPV) reduction of carbonyl substrates with uranium-based catalysts, in particular from a series of uranyl(VI) compounds where [UO2(OTf)2] (1) displays the greatest efficiency (OTf = trifluoromethanesulfonate). [UO2(OTf)2] reduces a series of aromatic and aliphatic aldehydes and ketones into their corresponding alcohols with moderate to excellent yields, using iPrOH as a solvent and a reductant. The reaction proceeds under mild conditions (80 °C) with an optimized catalytic charge of 2.3 mol % and KOiPr as a cocatalyst. The reduction of aldehydes (1-10 h) is faster than that of ketones (>15 h). NMR investigations clearly evidence the formation of hemiacetal intermediates with aldehydes, while they are not formed with ketones.
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Affiliation(s)
- Marie Kobylarski
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
| | - Louis Monsigny
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
| | - Pierre Thuéry
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
| | | | - Thibault Cantat
- Université Paris-Saclay, CEA, CNRS, NIMBE, 91191 Gif-sur-Yvette, France
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41
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Kremsmair A, Hess A, Heinz B, Knochel P. Regioselective Magnesiations and Zincations of Aromatics and Heterocycles Triggered by Lewis Acids. Chemistry 2021; 28:e202103269. [PMID: 34704653 PMCID: PMC9300163 DOI: 10.1002/chem.202103269] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/09/2021] [Indexed: 11/11/2022]
Abstract
Mixed TMP‐bases (TMP=2,2,6,6‐tetramethylpiperidyl), such as TMPMgCl ⋅ LiCl, TMP2Mg ⋅ 2LiCl, TMPZnCl ⋅ LiCl and TMP2Zn ⋅ 2LiCl, are outstanding reagents for the metalation of functionalized aromatics and heterocycles. In the presence of Lewis acids, such as BF3 ⋅ OEt2 or MgCl2, the metalation scope of such bases was dramatically increased, and regioselectivity switches were achieved in the presence or absence of these Lewis acids. Furthermore, highly reactive lithium bases, such as TMPLi or Cy2NLi, are also compatible with various Lewis acids, such as MgCl2 ⋅ 2LiCl, ZnCl2 ⋅ 2LiCl or CuCN ⋅ 2LiCl. Performing such metalations in continuous flow using commercial setups permitted practical and convenient reaction conditions.
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Affiliation(s)
- Alexander Kremsmair
- Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen, Chemie und Pharmazie, GERMANY
| | - Andreas Hess
- Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen, Chemie und Pharmazie, GERMANY
| | - Benjamin Heinz
- Ludwig-Maximilians-Universität München: Ludwig-Maximilians-Universitat Munchen, Chemie und Pharamzie, GERMANY
| | - Paul Knochel
- Ludwig-Maximilians-Universitat Munchen, Department of Chemistry, Butenandtstr. 5-13, 81377, München, GERMANY
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42
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Gronbach LM, Voss A, Frahm M, Villinger A, Bresien J, Michalik D, Brasholz M. Lewis Acid-Catalyzed Carbofunctionalization of Uncommon C, N-Diacyliminium Ions: Controlling Regio- and Enantioselectivity. Org Lett 2021; 23:7834-7838. [PMID: 34596417 DOI: 10.1021/acs.orglett.1c02857] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The tricyclic azepino[1,2-a]indole acetates 7, readily accessible by visible-light-driven catalytic photooxygenation of cyclohepta[b]indoles 1, are convenient precursors to novel and uncommon cyclic C,N-diacyliminium ions 3. We report here the first Lewis acid-catalyzed C-C bond forming reactions of these species with TMSCN and silyl enol ethers as nucleophiles and utilizing TIPSOTf as well as Sc(OTf)3 as catalysts. Employing Sc(OTf)3/pybox complexes as a chiral catalyst system, regio- and enantioselective asymmetric alkylations with silyl enol ethers were achieved.
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Affiliation(s)
- Lisa Marie Gronbach
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
| | - Alice Voss
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
| | - Mario Frahm
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
| | - Alexander Villinger
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
| | - Jonas Bresien
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany
| | - Dirk Michalik
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany.,Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
| | - Malte Brasholz
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany.,Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
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43
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Synthesis of limonene β-amino alcohol from (R)-(+)-α-methylbenzylamine and (+)-limonene 1,2-epoxide. J Mol Struct 2021. [DOI: 10.1016/j.molstruc.2021.130691] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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44
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Bhangare DN, Shinde RG, Pawar PD, Nikalje MD, Lokhande MN. Catalytic Sc(
OTf
)
3
mediated direct asymmetric aldol reaction of (−)‐menthyl isothiocyanatoacetate with aldehydes by using (−)‐menthol as chiral auxiliary. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Dattatraya N. Bhangare
- Department of Chemistry Savitribai Phule Pune University Pune India
- Department of Chemistry Government of Maharashtra's Ismail Yusuf College Jogeshwari(E) Mumbai India
| | - Rohit G. Shinde
- Department of Chemistry Savitribai Phule Pune University Pune India
| | | | | | - Mahendra N. Lokhande
- Department of Chemistry Avvaiyar Government College for Women Karaikal Puducherry (U.T.) India
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45
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Kubra KT, Salman MS, Hasan MN, Islam A, Teo SH, Hasan MM, Sheikh MC, Awual MR. Sustainable detection and capturing of cerium(III) using ligand embedded solid-state conjugate adsorbent. J Mol Liq 2021. [DOI: 10.1016/j.molliq.2021.116667] [Citation(s) in RCA: 61] [Impact Index Per Article: 20.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
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46
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Fouilloux H, Qiang W, Robert C, Placet V, Thomas CM. Multicatalytic Transformation of (Meth)acrylic Acids: a One‐Pot Approach to Biobased Poly(meth)acrylates. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106640] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hugo Fouilloux
- PSL University Chimie ParisTech CNRS Institut de Recherche de Chimie Paris 75005 Paris France
| | - Wei Qiang
- PSL University Chimie ParisTech CNRS Institut de Recherche de Chimie Paris 75005 Paris France
| | - Carine Robert
- PSL University Chimie ParisTech CNRS Institut de Recherche de Chimie Paris 75005 Paris France
| | - Vincent Placet
- FEMTO-ST Institute CNRS/UFC/ENSMM/UTBM Department of Applied Mechanics Université de Bourgogne Franche-Comté Besançon France
| | - Christophe M. Thomas
- PSL University Chimie ParisTech CNRS Institut de Recherche de Chimie Paris 75005 Paris France
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47
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Nakamura K, Kondo M, Krishnan CG, Takizawa S, Sasai H. Azopyridine-based chiral oxazolines with rare-earth metals for photoswitchable catalysis. Chem Commun (Camb) 2021; 57:7414-7417. [PMID: 34231579 DOI: 10.1039/d1cc02602j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An azopyridine-based oxazoline was developed for utilizing azo group coordination and isomerization as a photoswitchable ligand. The ligand coordinated to rare-earth metal (RE) catalyst underwent efficient E/Z photoisomerization, suggesting tri- and bidentate coordination switching. The photoisomerization of the ligand enabled modulation of the enantioselectivity of an RE-catalyzed aminal forming reaction.
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Affiliation(s)
- Kento Nakamura
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
| | - Masaru Kondo
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan. and Department of Materials Science and Engineering, Graduate School of Science and Engineering, Ibaraki University, Hitachi 316-8511, Ibaraki, Japan
| | - Chandu G Krishnan
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
| | - Shinobu Takizawa
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
| | - Hiroaki Sasai
- SANKEN (The Institute of Scientific and Industrial Research), Osaka University, Mihogaoka, Ibaraki, Osaka 567-0047, Japan.
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48
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Fouilloux H, Qiang W, Robert C, Placet V, Thomas CM. Multicatalytic Transformation of (Meth)acrylic Acids: a One-Pot Approach to Biobased Poly(meth)acrylates. Angew Chem Int Ed Engl 2021; 60:19374-19382. [PMID: 34152679 DOI: 10.1002/anie.202106640] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2021] [Revised: 06/02/2021] [Indexed: 12/21/2022]
Abstract
Shifting from petrochemical feedstocks to renewable resources can address some of the environmental issues associated with petrochemical extraction and make plastics production sustainable. Therefore, there is a growing interest in selective methods for transforming abundant renewable feedstocks into monomers suitable for polymer production. Reported herein are one-pot catalytic systems, that are active, productive, and selective under mild conditions for the synthesis of copolymers from renewable materials. Each system allows for anhydride formation, alcohol acylation and/or acid esterification, as well as polymerization of the formed (meth)acrylates, providing direct access to a new library of unique poly(meth)acrylates.
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Affiliation(s)
- Hugo Fouilloux
- PSL University, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris, 75005, Paris, France
| | - Wei Qiang
- PSL University, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris, 75005, Paris, France
| | - Carine Robert
- PSL University, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris, 75005, Paris, France
| | - Vincent Placet
- FEMTO-ST Institute, CNRS/UFC/ENSMM/UTBM, Department of Applied Mechanics, Université de Bourgogne Franche-Comté, Besançon, France
| | - Christophe M Thomas
- PSL University, Chimie ParisTech, CNRS, Institut de Recherche de Chimie Paris, 75005, Paris, France
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49
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Saget R, Jaunky P, Duñach E. Bi(OTf) 3-catalysed intramolecular cyclisation of unsaturated acetals. RSC Adv 2021; 11:21066-21072. [PMID: 35479394 PMCID: PMC9034051 DOI: 10.1039/d1ra03686f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/11/2021] [Accepted: 06/07/2021] [Indexed: 01/06/2023] Open
Abstract
A series of highly functionalized carbocycles was efficiently prepared via the selective cyclisation of unsaturated acetals and ketals in the presence of only 1 mol% of Bi(iii) or Fe(iii) triflates as the catalysts at room temperature, with yields ranging from 60 to 90%. With Bi(OTf)3 catalysis, α,β-unsaturated ether carbocycles are formed selectively, whereas with the Fe(OTf)3 system, a cycloisomerisation to carbocyclic diethers is mainly obtained. This acetal/olefin cyclisation could be run at a multi-gram scale and compound 2c could be obtained on a 300 gram-scale with a yield of 69% after precipitation in hexane. A series of highly functionalized carbocycles was efficiently prepared via the selective cyclisation of unsaturated acetals and ketals in the presence of only 1 mol% of Bi(iii) or Fe(iii) triflates as the catalysts at room temperature, with yields ranging from 60 to 90%.![]()
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Affiliation(s)
- Raphaël Saget
- Institut de Chimie de Nice, Université Cote d'Azur, CNRS Parc Valrose 06108 Nice cedex 2 France http://web.univ-cotedazur.fr/labs/icn/fr.,V. MANE Fils, Centre de Recherche en Chimie Organique 620 Route de Grasse Le Bar-sur-Loup 06620 France https://www.mane.com/
| | - Piotr Jaunky
- V. MANE Fils, Centre de Recherche en Chimie Organique 620 Route de Grasse Le Bar-sur-Loup 06620 France https://www.mane.com/
| | - Elisabet Duñach
- Institut de Chimie de Nice, Université Cote d'Azur, CNRS Parc Valrose 06108 Nice cedex 2 France http://web.univ-cotedazur.fr/labs/icn/fr
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Longo LS, Siqueira FA, Anjos NS, Santos GFD. Scandium(III)‐Triflate‐Catalyzed Multicomponent Reactions for the Synthesis of Nitrogen Heterocycles. ChemistrySelect 2021. [DOI: 10.1002/slct.202101032] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Affiliation(s)
- Luiz S. Longo
- Department of Pharmaceutical Sciences Federal University of São Paulo - UNIFESP Rua São Nicolau 210 09913-030 Diadema SP Brazil
| | - Fernanda A. Siqueira
- Department of Chemistry Federal University of São Paulo - UNIFESP Rua Prof. Arthur Riedel 275 09972-270 Diadema SP Brazil
| | - Nicolas S. Anjos
- Department of Pharmaceutical Sciences Federal University of São Paulo - UNIFESP Rua São Nicolau 210 09913-030 Diadema SP Brazil
| | - Gabriela F. D. Santos
- Department of Pharmaceutical Sciences Federal University of São Paulo - UNIFESP Rua São Nicolau 210 09913-030 Diadema SP Brazil
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