1
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Sokolenko LV, Sokolenko TM, Yagupolskii YL. 1,2-Difluoroethylene (HFO-1132): synthesis and chemistry. Beilstein J Org Chem 2024; 20:1955-1966. [PMID: 39161709 PMCID: PMC11331538 DOI: 10.3762/bjoc.20.171] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2024] [Accepted: 07/26/2024] [Indexed: 08/21/2024] Open
Abstract
This article provides a comprehensive overview of the synthesis and chemistry of 1,2-difluoroethylene (HFO-1132). The major routes for the preparation of the E- and Z-isomer of HFO-1132 are reviewed, along with the chemistry in radical, nucleophilic, and electrophilic reactions.
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Affiliation(s)
- Liubov V Sokolenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str., 5, Kyiv-94, 02660, Ukraine
| | - Taras M Sokolenko
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str., 5, Kyiv-94, 02660, Ukraine
| | - Yurii L Yagupolskii
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar str., 5, Kyiv-94, 02660, Ukraine
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2
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Sheldon DJ, Parr JM, Crimmin MR. Defluorination of HFCs by a magnesium reagent. Dalton Trans 2024; 53:6524-6528. [PMID: 38563682 PMCID: PMC11019403 DOI: 10.1039/d4dt00636d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2024] [Accepted: 03/28/2024] [Indexed: 04/04/2024]
Abstract
Reaction of a series of HFCs with a main group reagent containing a Mg-Mg bond results in defluorination to form the corresponding magnesium fluoride complex. In the case of 1,1,1,2-tetrafluoroethane (HFC-134a) generation of the fluoride occurs alongside selective formation of 1,1-difluoroethene. DFT calculations have been carried out to better understand the selectivity and compare the barriers for sp3 C-F bond activation with sp3 C-H bond activation in this system.
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Affiliation(s)
- Daniel J Sheldon
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, W12 0BZ, UK.
| | - Joseph M Parr
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, W12 0BZ, UK.
| | - Mark R Crimmin
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, London, W12 0BZ, UK.
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3
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Kirij NV, Filatov AA, Yagupolskii YL, Peng S, Sprague L. ( E, Z)-1,1,1,4,4,4-Hexafluorobut-2-enes: hydrofluoroolefins halogenation/dehydrohalogenation cascade to reach new fluorinated allene. Beilstein J Org Chem 2024; 20:452-459. [PMID: 38440173 PMCID: PMC10910381 DOI: 10.3762/bjoc.20.40] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2023] [Accepted: 01/25/2024] [Indexed: 03/06/2024] Open
Abstract
A series of 2,3-dihalo-1,1,1,4,4,4-hexafluorobutanes and 2-halo-1,1,1,4,4,4-hexafluorobut-2-enes were prepared from commercially available hydrofluoroolefins 1,1,1,4,4,4-hexafluorobut-2-enes and their 1H, 19F and 13C chemical shifts measured. Some reactions of synthesized 2-halo-1,1,1,4,4,4-hexafluorobut-2-enes have been investigated. A simple, one-pot procedure for the preparation of a new allene (1,1,4,4,4-pentafluorobuta-1,2-diene) and some of its transformations is presented.
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Affiliation(s)
- Nataliia V Kirij
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar Str., 5, Kyiv-94, 02660, Ukraine
| | - Andrey A Filatov
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar Str., 5, Kyiv-94, 02660, Ukraine
| | - Yurii L Yagupolskii
- Institute of Organic Chemistry, National Academy of Sciences of Ukraine, Academician Kukhar Str., 5, Kyiv-94, 02660, Ukraine
| | - Sheng Peng
- The Chemours Company, Chemours Discovery Hub, Newark, DE 19713, United States
| | - Lee Sprague
- The Chemours Company, Chemours Discovery Hub, Newark, DE 19713, United States
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4
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Csenki JT, Novák Z. Iodonium based regioselective double nucleophilic alkene functionalization of a hydrofluoroolefin scaffold. Chem Commun (Camb) 2024; 60:726-729. [PMID: 38112008 DOI: 10.1039/d3cc04985j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2023]
Abstract
Herein, we report a modular regioselective alkene difunctionalization strategy based on the use of hydrofluoroolefin (HFO) gas as fluorous feedstock material. The transformation of the HFO gas to iodonium salt creates vicinal electrophilic sites readily available for a broad range of nucleophiles.
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Affiliation(s)
- János T Csenki
- MTA-ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Eötvös Loránd University, Institute of Chemistry, Pázmány Péter stny. 1/A, Budapest H-1117, Hungary.
| | - Zoltán Novák
- MTA-ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Eötvös Loránd University, Institute of Chemistry, Pázmány Péter stny. 1/A, Budapest H-1117, Hungary.
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5
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Hooker LV, Bandar JS. Synthetic Advantages of Defluorinative C-F Bond Functionalization. Angew Chem Int Ed Engl 2023; 62:e202308880. [PMID: 37607025 PMCID: PMC10843719 DOI: 10.1002/anie.202308880] [Citation(s) in RCA: 13] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/23/2023] [Revised: 08/20/2023] [Accepted: 08/21/2023] [Indexed: 08/24/2023]
Abstract
Much progress has been made in the development of methods to both create compounds that contain C-F bonds and to functionalize C-F bonds. As such, C-F bonds are becoming common and versatile synthetic functional handles. This review summarizes the advantages of defluorinative functionalization reactions for small molecule synthesis. The coverage is organized by the type of carbon framework the fluorine is attached to for mono- and polyfluorinated motifs. The main challenges, opportunities and advances of defluorinative functionalization are discussed for each class of organofluorine. Most of the text focuses on case studies that illustrate how defluorofunctionalization can improve routes to synthetic targets or how the properties of C-F bonds enable unique mechanisms and reactions. The broader goal is to showcase the opportunities for incorporating and exploiting C-F bonds in the design of synthetic routes, improvement of specific reactions and advent of new methods.
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Affiliation(s)
- Leidy V Hooker
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523, USA
| | - Jeffrey S Bandar
- Department of Chemistry, Colorado State University, Fort Collins, CO, 80523, USA
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6
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Luo YC, Wang MK, Yu LC, Zhang X. Nickel-Catalyzed Selective C(sp 2 )-F Bond Alkylation of Industrially Relevant Hydrofluoroolefin HFO-1234yf. Angew Chem Int Ed Engl 2023; 62:e202308690. [PMID: 37470697 DOI: 10.1002/anie.202308690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2023] [Revised: 07/18/2023] [Accepted: 07/19/2023] [Indexed: 07/21/2023]
Abstract
The selective transition-metal catalyzed C-F bond functionalization of inexpensive industrial fluorochemicals represents one of the most attractive approaches to valuable fluorinated compounds. However, the selective C(sp2 )-F bond carbofunctionalization of refrigerant hydrofluoroolefins (HFOs) remains challenging. Here, we report a nickel-catalyzed selective C(sp2 )-F bond alkylation of HFO-1234yf with alkylzinc reagents. The resulting 2-trifluoromethylalkenes can serve as a versatile synthon for diversified transformations, including the anti-Markovnikov type hydroalkylation and the synthesis of bioactive molecule analogues. Mechanistic studies reveal that lithium salt is essential to promote the oxidative addition of Ni0 (Ln ) to the C-F bond; the less electron-rich N-based ligands, such as bipyridine and pyridine-oxazoline, feature comparable or even higher oxidative addition rates than the electron-rich phosphine ligands; the strong σ-donating phosphine ligands, such as PMe3 , are detrimental to transmetallation, but the less electron-rich and bulky N-based ligands, such as pyridine-oxazoline, facilitate transmetallation and reductive elimination to form the final product.
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Affiliation(s)
- Yun-Cheng Luo
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Ming-Kuan Wang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Ling-Chao Yu
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
| | - Xingang Zhang
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai, 200032, China
- School of Chemistry and Material Sciences, Hangzhou Institute for Advanced Study, University of Chinese Academy of Sciences, 1 Sub-lane Xiangshan, Hangzhou, 310024, China
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7
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Song S, Xu S. Recent Progress in Selective C-F Bond Activation of Trifluoromethyl Alkenes. CHINESE J ORG CHEM 2023. [DOI: 10.6023/cjoc202210006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
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8
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Advances in Catalytic C–F Bond Activation and Transformation of Aromatic Fluorides. Catalysts 2022. [DOI: 10.3390/catal12121665] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022] Open
Abstract
The activation and transformation of C–F bonds in fluoro-aromatics is a highly desirable process in organic chemistry. It provides synthetic methods/protocols for the generation of organic compounds possessing single or multiple C–F bonds, and effective catalytic systems for further study of the activation mode of inert chemical bonds. Due to the high polarity of the C–F bond and it having the highest bond energy in organics, C–F activation often faces considerable academic challenges. In this mini-review, the important research achievements in the activation and transformation of aromatic C–F bond, catalyzed by transition metal and metal-free systems, are presented.
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9
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Aelterman M, Biremond T, Jubault P, Poisson T. Electrochemical Synthesis of gem-Difluoro- and γ-Fluoro-Allyl Boronates and Silanes. Chemistry 2022; 28:e202202194. [PMID: 36067044 PMCID: PMC9828158 DOI: 10.1002/chem.202202194] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Indexed: 01/12/2023]
Abstract
The electrochemical synthesis of fluorinated allyl silanes and boronates was disclosed. The addition of electrogenerated boryl or silyl radicals onto many α-trifluoromethyl or α-difluoromethylstyrenes in an undivided cell allowed the formation of a large panel of synthetically useful gem-difluoro and γ-fluoroallyl boronates and silanes (64 examples, from 31 % to 95 % yield). In addition, a scale up of the reactions under continuous flow was showcased using an electrochemical reactor with promising volumetric productivity (688 g.L-1 .h-1 and 496 g.L-1 .h-1 ). Moreover, the synthetic utility of these building blocks was highlighted through versatile transformations. Finally, plausible reaction mechanisms were suggested to explain the formation of the products.
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Affiliation(s)
- Maude Aelterman
- Normandie Univ INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014)76000RouenFrance
| | - Tony Biremond
- Normandie Univ INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014)76000RouenFrance
| | - Philippe Jubault
- Normandie Univ INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014)76000RouenFrance
| | - Thomas Poisson
- Normandie Univ INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014)76000RouenFrance
- Institut Universitaire de France1 rue Descartes75231ParisFrance
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10
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Csenki JT, Tóth BL, Béke F, Varga B, P. Fehér P, Stirling A, Czégény Z, Bényei A, Novák Z. Synthesis of Hydrofluoroolefin-Based Iodonium Reagent via Dyotropic Rearrangement and Its Utilization in Fluoroalkylation. Angew Chem Int Ed Engl 2022; 61:e202208420. [PMID: 35876269 PMCID: PMC9540448 DOI: 10.1002/anie.202208420] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Indexed: 11/25/2022]
Abstract
[1,2]-shift of atoms in alkyl fragments belongs to the class of dyotropic rearrangements. Various atoms, including halogens can be involved in the migration, however participation of iodine is unprecedented. Herein, we report our experimental and DFT studies on the oxidation triggered dyotropic rearrangement of iodo and chloro functions via butterfly-type transition state to demonstrate the migrating ability of λ3 -iodane centre. With the exploitation of dyotropic rearrangement we designed and synthesized a novel fluoroalkyl iodonium reagent from industrial feedstock gas HFO-1234yf. We demonstrated that the hypervalent reagent serves as an excellent fluoroalkylation agent for various amines and nitrogen heterocycles.
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Affiliation(s)
- János T. Csenki
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Balázs L. Tóth
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Ferenc Béke
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Bálint Varga
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Péter P. Fehér
- Research Centre for Natural SciencesEötvös Loránd Research NetworkMagyar Tudósok körútja 21117BudapestHungary
| | - András Stirling
- Research Centre for Natural SciencesEötvös Loránd Research NetworkMagyar Tudósok körútja 21117BudapestHungary
- Department of ChemistryEszterházy Károly Catholic UniversityLeányka u. 63300EgerHungary
| | - Zsuzsanna Czégény
- Research Centre for Natural SciencesEötvös Loránd Research NetworkMagyar Tudósok körútja 21117BudapestHungary
| | - Attila Bényei
- Department of Physical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
| | - Zoltán Novák
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
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11
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Csenki JT, Tóth BL, Béke F, Varga B, Fehér PP, Stirling A, Czégény Z, Bényei A, Novák Z. Synthesis of Hydrofluoroolefin‐based Iodonium Reagent via Dyotropic Rearrangement and Its Utilization in Fluoroalkylation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- János Tivadar Csenki
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Balázs László Tóth
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Ferenc Béke
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Bálint Varga
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Péter Pál Fehér
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont HUNGARY
| | - András Stirling
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont HUNGARY
| | - Zsuzsanna Czégény
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont HUNGARY
| | - Attila Bényei
- University of Debrecen: Debreceni Egyetem Department of Physical Chemistry HUNGARY
| | - Zoltán Novák
- Eotvos Lorand Tudomanyegyetem Institute of Chemistry Pázány Péter stny 1/a 1117 Budapest HUNGARY
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12
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Oyama N, Akiyama S, Kubota K, Imamoto T, Ito H. Cu(I)‐Catalyzed Enantioselective γ‐Boryl Substitution of Trifluoromethyl‐ and Silyl‐substituted Alkenes. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200664] [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)
- Natsuki Oyama
- Hokkaido University: Hokkaido Daigaku Division of Applied Chemistry JAPAN
| | - Sota Akiyama
- Hokkaido University: Hokkaido Daigaku Division of Applied Chemistry JAPAN
| | - Koji Kubota
- Hokkaido University: Hokkaido Daigaku Division of Applied Chemistry JAPAN
| | | | - Hajime Ito
- Hokkaido University Division of Applied Chemistry Kita-13 Nishi-8Kita-ku 060-8628 Sapporo JAPAN
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13
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Ligand‐Controlled Palladium‐Catalyzed Regiodivergent Defluorinative Allylation of
gem
‐Difluorocyclopropanes
via
σ‐Bond Activation. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200307] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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14
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Luo C, Zhou Y, Chen H, Wang T, Zhang ZB, Han P, Jing LH. Photoredox Metal-Free Allylic Defluorinative Silylation of α-Trifluoromethylstyrenes with Hydrosilanes. Org Lett 2022; 24:4286-4291. [PMID: 35674520 DOI: 10.1021/acs.orglett.2c01690] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
We report an efficient strategy that combines organic photoredox and hydrogen atom transfer to deliver gem-difluoroallylsilanes via defluorinative silylation of α-trifluoromethylstyrenes using hydrosilanes as silicon sources. This protocol provides an environmentally friendly approach for the preparation of structurally diverse gem-difluoroallylsilanes with excellent functional group compatibility and renders it suitable for late-stage modification of bioactive and complex molecules.
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Affiliation(s)
- Cong Luo
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Yang Zhou
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Hang Chen
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Ting Wang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Zheng-Bing Zhang
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Pan Han
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
| | - Lin-Hai Jing
- Chemical Synthesis and Pollution Control Key Laboratory of Sichuan Province, College of Chemistry and Chemical Engineering, China West Normal University, Nanchong 637002, China
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15
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Pan X, Talavera M, Scholz G, Braun T. Chlorodefluorination of Fluoromethanes and Fluoroolefins at a Lewis Acidic Aluminum Fluoride. ChemCatChem 2022. [DOI: 10.1002/cctc.202200029] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Xinzi Pan
- Humboldt-Universitat zu Berlin Department of Chemistry GERMANY
| | - Maria Talavera
- Humboldt-Universitat zu Berlin Department of Chemistry GERMANY
| | - Gudrun Scholz
- Humboldt-Universitat zu Berlin Department of Chemistry GERMANY
| | - Thomas Braun
- Humboldt University Chemistry Brook-Taylor Str. 2 12489 Berlin GERMANY
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16
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Zhu Z, Lin L, Xiao J, Shi Z. Nickel‐Catalyzed Stereo‐ and Enantioselective Cross‐Coupling of
gem
‐Difluoroalkenes with Carbon Electrophiles by C−F Bond Activation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113209] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ziqi Zhu
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
| | - Lin Lin
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
| | - Jieshuai Xiao
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry Chemistry and Biomedicine Innovation Center (ChemBIC) School of Chemistry and Chemical Engineering Nanjing University Nanjing 210093 China
- School of Chemistry and Chemical Engineering Henan Normal University Xinxiang Henan 453007 China
- College of Chemistry and Chemical Engineering Yangzhou University Yangzhou 225002 China
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17
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Hill M, Okokhere-Edeghoghon B, Mahon MF, McMullin CL. Diverse Reactivity of a Magnesium Silanide toward Ketones. Chem Commun (Camb) 2022; 58:10711-10714. [DOI: 10.1039/d2cc03966d] [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
The reactivity of a molecular magnesium silanide toward ketones displays a significant variability of outcome, resulting in adduct formation, deprotonation, dearomatisation or deoxygenation, that is dependent on the structure and...
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18
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Okokhere-Edeghoghon B, Neale SE, Hill MS, Mahon MF, McMullin CL. Isocyanate deoxygenation by a molecular magnesium silanide. Dalton Trans 2021; 51:136-144. [PMID: 34866137 DOI: 10.1039/d1dt03775g] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The stoichiometric reactivity of a β-diketiminato (BDI) magnesium silanide towards a variety of organic isocyanates has been assessed. While the primary outcome of reactions of t-BuNCO, DippNCO and CyNCO was the production of β-diketiminato magnesium siloxide adducts of the isonitrile resulting from isocyanate deoxygenation, analogous treatment with i-PrNCO led to multiple products, four of which have been positively identified. Although the specificity of this latter reaction was hampered by competitive isocycanate addition at the γ-methine carbon of the BDI supporting ligand, the identification of [{i-PrNCO}CH{(Me)CNDipp}Mg{Me2PhSi}C(O)Ni-Pr]6 provided corroborative evidence for the likely generation of sila-amidate intermediates in all four reactions under study. The formation of [{Me2PhSi}C(O)NR]- anions as the most likely initial species formed en route to isonitrile and siloxide formation was, therefore, validated by a computational density functional theory (DFT) study.
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Affiliation(s)
| | - Samuel E Neale
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
| | - Michael S Hill
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
| | - Mary F Mahon
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
| | - Claire L McMullin
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK.
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19
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Zhu Z, Lin L, Xiao J, Shi Z. Nickel-Catalyzed Stereo- and Enantioselective Cross-Coupling of gem-Difluoroalkenes with Carbon Electrophiles by C-F Bond Activation. Angew Chem Int Ed Engl 2021; 61:e202113209. [PMID: 34889493 DOI: 10.1002/anie.202113209] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Indexed: 11/07/2022]
Abstract
Stereo- and enantioselective cross-electrophile coupling involving C-F bond activation is reported. Treatment of gem-difluoroalkenes with racemic benzyl electrophiles in the presence of a chiral nickel complex using B2 pin2 as a stoichiometric reductant allows the construction of a C(sp2 )-C(sp3 ) bond under mild conditions, affording a broad range of monofluoroalkenes bearing stereogenic allylic centers. Initial mechanistic studies indicate that a radical chain pathway may be operating, wherein the ester group in the gem-difluoroalkene promotes C-F bond activation through oxidative addition to a Ni species.
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Affiliation(s)
- Ziqi Zhu
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Lin Lin
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Jieshuai Xiao
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China.,College of Chemistry and Chemical Engineering, Yangzhou University, Yangzhou, 225002, China
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20
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Novák Z, Kotschy A, Varga B, Csenki JT, Tóth BL, Béke F. Application of Industrially Relevant HydroFluoroOlefin (HFO) Gases in Organic Syntheses. SYNTHESIS-STUTTGART 2021. [DOI: 10.1055/a-1538-8344] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractHydrofluoroolefin (HFO) gases are state-of-the-art cooling agents with widespread household and industrial applications. Considering their structural benefits these fluorous feedstocks have gained the attention of organic chemists in the last couple of years. In this short review we summarized the existing synthetic transformations of these gaseous starting material and present their applicability in the synthesis of fluorine-containing organic molecules, which have potential importance as building blocks and reagents for diverse syntheses.1 Introduction2 Addition Reactions3 Substitutions4 Organometallic Chemistry4.1 Organolithium Compounds4.2 Organometallic Complexes4.3 Silicon Organic Chemistry4.4 Boron Organic Chemistry4.5 Palladium-Catalyzed Transformations4.6 Metathesis4.7 Hydroesterification, Hydroformylation5 Conclusions
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Affiliation(s)
- Zoltán Novák
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
| | | | - Bálint Varga
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
| | - János T. Csenki
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
| | - Balázs L. Tóth
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
| | - Ferenc Béke
- ELTE ‘Lendület’ Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Faculty of Science, Eötvös Loránd University
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21
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Zhou J, Zhao Z, Shibata N. Silylboronate-Mediated Defluorosilylation of Aryl Fluorides with or without Ni-Catalyst. Front Chem 2021; 9:771473. [PMID: 34760872 PMCID: PMC8573161 DOI: 10.3389/fchem.2021.771473] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Accepted: 10/04/2021] [Indexed: 11/13/2022] Open
Abstract
The defluorosilylation of aryl fluorides to access aryl silanes was achieved under transition-metal-free conditions via an inert C-F bond activation. The defluorosilylation, mediated by silylboronates and KOtBu, proceeded smoothly at room temperature to afford various aryl silanes in good yields. Although a comparative experiment indicated that Ni catalyst facilitated this transformation more efficiently, the transition-metal-free protocol is advantageous from a green chemistry perspective.
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Affiliation(s)
- Jun Zhou
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Nagoya, Japan
| | - Zhengyu Zhao
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Nagoya, Japan
| | - Norio Shibata
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Nagoya, Japan.,Institute of Advanced Fluorine-Containing Materials, Zhejiang Normal University, Jinhua, China
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22
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Zhang J, Geng S, Feng Z. Advances in silylation and borylation of fluoroarenes and gem-difluoroalkenes via C-F bond cleavage. Chem Commun (Camb) 2021; 57:11922-11934. [PMID: 34700335 DOI: 10.1039/d1cc04729a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Organoboron and organosilane compounds are widely used in organic synthesis and pharmaceuticals. In addition, the C-F bond functionalization is a useful tool for the construction of carbon-carbon and carbon-heteroatom bonds. In particular, the late-stage functionalization of bioactive molecules through defluoroborylation and defluorosilylation reactions will provide good opportunities for the development and diversification of new medicinal compounds. Thus, this feature article summarized the methods for the defluorosilylation and defluoroborylation of unreactive monofluoroarenes and gem-difluoroalkenes from 2000 to 2021, which might create some new ideas and will be helpful for further research in this field. These defluoroborylation and defluorosilylation strategies can be applied to synthesize silylated arenes, borylated arenes, silylated fluoroalkenes, and borylated fluoroalkenes, thus providing impressive advantages over traditional methods for the synthesis of organoboron and organosilane compounds in terms of divergent structures.
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Affiliation(s)
- Juan Zhang
- College of Biomedical Engineering, Taiyuan University of Technology, Taiyuan 030024, P. R. China
| | - Shasha Geng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China.
| | - Zhang Feng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, Chemical Biology Research Center, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, P. R. China.
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23
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Tóth BL, Sályi G, Domján A, Egyed O, Bényei A, Gonda Z, Novák Z. Z
‐Selective Fluoroalkenylation of (Hetero)Aromatic Systems by Iodonium Reagents in Palladium‐Catalyzed Directed C−H Activation. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202101108] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Balázs L. Tóth
- ELTE Catalysis and Organic Synthesis Research Group Institute of Chemistry Eötvös Loránd University Faculty of Science Pázmány Péter sétány. 1/A H-1117 Budapest Hungary
| | - Gergő Sályi
- ELTE Catalysis and Organic Synthesis Research Group Institute of Chemistry Eötvös Loránd University Faculty of Science Pázmány Péter sétány. 1/A H-1117 Budapest Hungary
| | - Attila Domján
- Research Centre for Natural Sciences Eötvös Loránd Research Network Magyar Tudósok körútja 2 H-1117 Budapest Hungary
| | - Orsolya Egyed
- Research Centre for Natural Sciences Eötvös Loránd Research Network Magyar Tudósok körútja 2 H-1117 Budapest Hungary
| | - Attila Bényei
- Department of Physical Chemistry University of Debrecen Egyetem tér 1 H-4032 Debrecen Hungary
| | - Zsombor Gonda
- ELTE Catalysis and Organic Synthesis Research Group Institute of Chemistry Eötvös Loránd University Faculty of Science Pázmány Péter sétány. 1/A H-1117 Budapest Hungary
| | - Zoltán Novák
- ELTE Catalysis and Organic Synthesis Research Group Institute of Chemistry Eötvös Loránd University Faculty of Science Pázmány Péter sétány. 1/A H-1117 Budapest Hungary
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24
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Abstract
AbstractThe unique properties of fluorine-containing organic compounds make fluorine substitution attractive for the development of pharmaceuticals and various specialty materials, which have inspired the evolution of diverse C-F bond activation techniques. Although many advances have been made in functionalizations of activated C-F bonds utilizing transition metal complexes, there are fewer approaches available for nonactivated C-F bonds due to the difficulty in oxidative addition of transition metals to the inert C-F bonds. In this regard, using Lewis acid to abstract the fluoride and light/radical initiator to generate the radical intermediate have emerged as powerful tools for activating those inert C-F bonds. Meanwhile, these transition-metal-free processes are greener, economical, and for the pharmaceutical industry, without heavy metal residues. This review provides an overview of recent C-F bond activations and functionalizations under transition-metal-free conditions. The key mechanisms involved are demonstrated and discussed in detail. Finally, a brief discussion on the existing limitations of this field and our perspective are presented.
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25
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Sheldon DJ, Crimmin MR. Complete deconstruction of SF 6 by an aluminium(I) compound. Chem Commun (Camb) 2021; 57:7096-7099. [PMID: 34159971 PMCID: PMC8291285 DOI: 10.1039/d1cc02838c] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The room-temperature activation of SF6, a potent greenhouse gas, is reported using a monovalent aluminium(i) reagent to form well-defined aluminium(iii) fluoride and aluminium(iii) sulfide products. New reactions have been developed to utilise the aluminium(iii) fluoride and aluminium(iii) sulfide as a nucleophilic source of F− and S2− for a range of electrophiles. The overall reaction sequence results in the net transfer of fluorine or sulfur atoms from an environmentally detrimental gas to useful organic products. The room-temperature activation of SF6, a potent greenhouse gas, is reported using a monovalent aluminium(i) reagent to form well-defined aluminium(iii) fluoride and aluminium(iii) sulfide products.![]()
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Affiliation(s)
- Daniel J Sheldon
- Molecular Sciences Research Hub, Department of Chemistry, Imperial College London, London, W12 0BZ, UK.
| | - Mark R Crimmin
- Molecular Sciences Research Hub, Department of Chemistry, Imperial College London, London, W12 0BZ, UK.
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26
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Achternbosch M, Brieger L, Strohmann C. Influence Of Lithium Coordinating Additives On The Structure Of Phenyldimethylsilyllithium. Z Anorg Allg Chem 2021. [DOI: 10.1002/zaac.202100031] [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)
- Moritz Achternbosch
- Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund Otto-Hahn-Str. 6 44227 Dortmund
| | - Lukas Brieger
- Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund Otto-Hahn-Str. 6 44227 Dortmund
| | - Carsten Strohmann
- Fakultät für Chemie und Chemische Biologie Technische Universität Dortmund Otto-Hahn-Str. 6 44227 Dortmund
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27
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Zhang H, Wang E, Geng S, Liu Z, He Y, Peng Q, Feng Z. Experimental and Computational Studies of the Iron‐Catalyzed Selective and Controllable Defluorosilylation of Unactivated Aliphatic
gem
‐Difluoroalkenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202100049] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Huan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
| | - Enhui Wang
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 China
| | - Shasha Geng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
| | - Zhengli Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
| | - Qian Peng
- State Key Laboratory of Elemento-Organic Chemistry College of Chemistry Nankai University Tianjin 300071 China
| | - Zhang Feng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research School of Pharmaceutical Sciences Chongqing University Chongqing 401331 P.R. China
- Sichuan Key Laboratory of Medical Imaging North Sichuan Medical College Nanchong P. R. China
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28
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Zhang H, Wang E, Geng S, Liu Z, He Y, Peng Q, Feng Z. Experimental and Computational Studies of the Iron-Catalyzed Selective and Controllable Defluorosilylation of Unactivated Aliphatic gem-Difluoroalkenes. Angew Chem Int Ed Engl 2021; 60:10211-10218. [PMID: 33555634 DOI: 10.1002/anie.202100049] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/03/2021] [Revised: 02/05/2021] [Indexed: 12/21/2022]
Abstract
The first iron-catalyzed defluorosilylation of unactivated gem-difluoroalkenes was developed, delivering gem-disilylated alkenes and (E)-silylated alkenes with excellent efficiency. This protocol features good functional group compatibility and excellent regio- and stereoselectivity, enabling the late-stage silylation of biologically relevant compounds, thus providing good opportunities for applications in medicinal chemistry. Preliminary mechanistic studies and DFT calculations reveal that a nucleophilic addition and elimination of the second C-F bond might be involved in the disilylation catalytic system, demonstrating unusual reactivity characteristics of iron catalysis.
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Affiliation(s)
- Huan Zhang
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China
| | - Enhui Wang
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Shasha Geng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China
| | - Zhengli Liu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China
| | - Yun He
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China
| | - Qian Peng
- State Key Laboratory of Elemento-Organic Chemistry, College of Chemistry, Nankai University, Tianjin, 300071, China
| | - Zhang Feng
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing, 401331, P.R. China.,Sichuan Key Laboratory of Medical Imaging, North Sichuan Medical College, Nanchong, P. R. China
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29
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Kysliak O, Görls H, Kretschmer R. Cooperative Bond Activation by a Bimetallic Main-Group Complex. J Am Chem Soc 2021; 143:142-148. [PMID: 33356229 DOI: 10.1021/jacs.0c12166] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Inspired by natural metalloenzymes that efficiently catalyze a variety of transformations, chemists have developed large numbers of dinuclear transition-metal complexes with extraordinary properties and reactivity patterns. For main-group element compounds, however, metal-metal cooperativity is much less explored. Here we present the synthesis and characterization of a room-temperature-stable compound with two separated two-coordinated gallium(I) centers possessing both a lone pair of electrons and a vacant orbital, reminiscent of singlet carbenes. This species displays enhanced reactivity compared to its mononuclear counterpart due to bimetallic cooperativity that allows for the facile activation of strong C-F bonds across the gallium-gallium bond. Two mechanistic scenarios of the cooperative bond activation have been identified by DFT and DLPNO-CCSD(T) calculations.
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Affiliation(s)
- Oleksandr Kysliak
- Institute of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, Humboldtstraße 8, 07743 Jena, Germany
| | - Helmar Görls
- Institute of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, Humboldtstraße 8, 07743 Jena, Germany
| | - Robert Kretschmer
- Institute of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, Humboldtstraße 8, 07743 Jena, Germany.,Jena Center for Soft Matter (JCSM), Friedrich Schiller University Jena, Philosophenweg 7, 07743 Jena, Germany
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30
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Yan G, Qiu K, Guo M. Recent advance in the C–F bond functionalization of trifluoromethyl-containing compounds. Org Chem Front 2021. [DOI: 10.1039/d1qo00037c] [Citation(s) in RCA: 53] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Abstract
The C–F bond is the strongest single bond in organic compounds.
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Affiliation(s)
- Guobing Yan
- College of Jiyang
- Zhejiang A&F University
- Zhuji 311800
- China
- College of Science
| | - Kaiying Qiu
- Department of Chemistry
- Lishui University
- Lishui 323000
- China
| | - Ming Guo
- College of Jiyang
- Zhejiang A&F University
- Zhuji 311800
- China
- College of Science
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31
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Sheldon DJ, Coates G, Crimmin MR. Defluorosilylation of trifluoromethane: upgrading an environmentally damaging fluorocarbon. Chem Commun (Camb) 2020; 56:12929-12932. [PMID: 32975261 DOI: 10.1039/d0cc04592f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The rapid, room-temperature defluorosilylation of trifluoromethane, a highly potent greenhouse gas, has been achieved using a simple silyl lithium reagent. An extensive computational mechanistic analysis provides a viable reaction pathway and demonstrates the unexpected electrophilic nature of LiCF3. The reaction generates a bench stable fluorinated building block that shows promise as an easy-to-use difluoromethylating agent. The difluoromethyl group is an increasingly important bioisostere in active pharmaceutical ingredients, and therefore our methodology creates value from waste. The potential scalability of the process has been demonstrated by achieving the reaction on a gram-scale.
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Affiliation(s)
- Daniel J Sheldon
- Molecular Sciences Research Hub, Department of Chemistry, Imperial College London, London W12 0BZ, UK.
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32
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Okokhere-Edeghoghon B, Dehmel M, Hill MS, Kretschmer R, Mahon MF, McMullin CL, Morris LJ, Rajabi NA. Nucleophilic Magnesium Silanide and Silaamidinate Derivatives. Inorg Chem 2020; 59:13679-13689. [DOI: 10.1021/acs.inorgchem.0c02034] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
| | - Maximilian Dehmel
- Institute of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Michael S. Hill
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Robert Kretschmer
- Institute of Inorganic and Analytical Chemistry (IAAC), Friedrich Schiller University Jena, 07743 Jena, Germany
| | - Mary F. Mahon
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Claire L. McMullin
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Louis J. Morris
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
| | - Nasir A. Rajabi
- Department of Chemistry, University of Bath, Claverton Down, Bath BA2 7AY, United Kingdom
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33
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Xie T, Zhang C, Zhang S, Rao W, Xu H, Shen Z, Chu X. Synthesis of Polycyclic Furan and Chromene Derivatives
via
Cascade Reactions Enabled by Cleavage of Multiple C(
sp
3
)−F Bonds. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000660] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Ting Xie
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 People's Republic of China
| | - Chen Zhang
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 People's Republic of China
| | - Si‐Xuan Zhang
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 People's Republic of China
| | - Weidong Rao
- Jiangsu Provincial Key Lab for the Chemistry and Utilization of Agro-Forest Biomass College of Chemical Engineering Nanjing Forestry University Nanjing 210037 People's Republic of China
| | - Haiyan Xu
- School of Environmental and Chemical Engineering Jiangsu University of Science and Technology Zhenjiang Jiangsu 212003 People's Republic of China
| | - Zhi‐Liang Shen
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 People's Republic of China
| | - Xue‐Qiang Chu
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis School of Chemistry and Molecular Engineering Nanjing Tech University Nanjing 211816 People's Republic of China
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34
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Murray BJ, Marsh TGF, Yufit DS, Fox MA, Harsanyi A, Boulton LT, Sandford G. HFO‐1234yf as a CF
3
‐Building Block: Synthesis and Chemistry of CF
3
‐Ynones. European J Org Chem 2020. [DOI: 10.1002/ejoc.202001071] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Ben J. Murray
- Department of Chemistry Durham University South Road DH1 3LE Durham U.K
| | | | - Dmitri S. Yufit
- Department of Chemistry Durham University South Road DH1 3LE Durham U.K
| | - Mark A. Fox
- Department of Chemistry Durham University South Road DH1 3LE Durham U.K
| | - Antal Harsanyi
- Medicines Research Centre GlaxoSmithKline R&D Ltd Gunnels Wood Road SG1 2NY Stevenage Hertfordshire U.K
| | - Lee T. Boulton
- Medicines Research Centre GlaxoSmithKline R&D Ltd Gunnels Wood Road SG1 2NY Stevenage Hertfordshire U.K
| | - Graham Sandford
- Department of Chemistry Durham University South Road DH1 3LE Durham U.K
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35
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Lim S, Cho H, Jeong J, Jang M, Kim H, Cho SH, Lee E. Cobalt-Catalyzed Defluorosilylation of Aryl Fluorides via Grignard Reagent Formation. Org Lett 2020; 22:7387-7392. [PMID: 32903016 DOI: 10.1021/acs.orglett.0c02752] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Transition-metal-catalyzed transformations of the carbon-fluorine bond not only tackle an interesting problem of challenging bond activation but also offer new synthetic strategies where the relatively inert C-F bond is converted to versatile functional groups. Herein we report a practical cobalt-catalyzed silylation of aryl fluorides that uses a cheap electrophilic silicon source with magnesium. This method is compatible with various silicon sources and can be operated under aerobic conditions. Mechanistic studies support the in situ formation of a Grignard reagent, which is captured by the electrophilic silicon source.
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Affiliation(s)
- Soobin Lim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Hyungdo Cho
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Jongheon Jeong
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Minjae Jang
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Hyunseok Kim
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Seung Hwan Cho
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
| | - Eunsung Lee
- Department of Chemistry, Pohang University of Science and Technology, Pohang 37673, Republic of Korea
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36
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Schuhknecht D, Spaniol TP, Yang Y, Maron L, Okuda J. Reactivity of a Molecular Calcium Hydride Cation ([CaH] +) Supported by an NNNN Macrocycle. Inorg Chem 2020; 59:9406-9415. [PMID: 32543844 DOI: 10.1021/acs.inorgchem.0c01289] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The hydride ligand in the cationic calcium hydride supported by a NNNN-type macrocycle, [(Me4TACD)2Ca2(μ-H)2(THF)][BAr4]2 (1; Me4TACD = 1,4,7,10-tetramethyl-1,4,7,10-tetraazacyclododecane; THF = tetrahydrofuran; BAr4 = B(C6H3-3,5-Me2)4), shows, in addition to its Brönsted basicity toward weak acids, a pronounced nucleophilicity resulting in nucleophilic substitution or insertion (addition) at a silicon or sp2 carbon center. Terminal acetylenes RC≡CH (R = SiMe3, cyclopropyl) as well as 1,4-diphenylbutadiene were deprotonated by 1 to give dinuclear complexes [(Me4TACD)2Ca2(μ-C≡CR)2][BAr4]2 (2a, R = SiMe3; 2b, R = cyclopropyl) and [(Me4TACD)2Ca2(μ2-η4-1,4-Ph2C4H2)][BAr4]2 (3) with H2 evolution. The addition reaction with BH3(THF) gave a tetrahydridoborate complex, [(Me4TACD)Ca(BH4)(THF)2][BAr4] (4), with κ2-H2BH2 coordination in the solid state, suggesting a pronounced Lewis acidic calcium center. The behavior resulting from both Lewis acidity and hydricity becomes apparent in the nucleophilic substitution of fluorobenzene by 1 to give benzene and the dimeric fluoride complex [(Me4TACD)2Ca2(μ-F)2(THF)][BAr4]2·2.5THF (5). Analogous nucleophilic substitution reaction is observed for heterofunctionalized organosilanes XSiR3 [X = I, N(SiHMe2)2, N3; R = Me3 or HMe2], which resulted in the formation of calcium complexes [(Me4TACD)Ca(X)(THF)n][BAr4] (6-8) containing an X ligand along with hydrosilane HSiR3. An insertion reaction by 1 was observed with CO2 and CO to give dinuclear formato complex [(Me4TACD)2Ca2(μ-OCHO)2][BAr4]2 (9) and cis-enediolato complex [(Me4TACD)2Ca2(μ-OCH═CHO)][BAr4]2·3.5THF (10), respectively. The latter is believed to have been formed as a result of the dimerization of an initially generated formyl or oxymethylene complex, [(Me4TACD)Ca(OCH)]+.
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Affiliation(s)
- Danny Schuhknecht
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Thomas P Spaniol
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Yan Yang
- CNRS, INSA, UPS, UMR 5215, LPCNO, Université de Toulouse, 135 avenue de Rangueil, 31077 Toulouse, France
| | - Laurent Maron
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52056 Aachen, Germany
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37
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Abstract
In this account we describe studies on the reactivity of rhodium(I) complexes of the type [Rh(E)(PEt3)3], where E represents hydrido, fluorido, germyl, boryl or silyl ligands, towards fluorinated olefins. The results are compared with those reported by other research groups on fluoroolefins, as well as with the chemistry of compounds [Rh(E)(PEt3)3] towards fluoroaromatics in terms of selectivity and mechanisms.1 Introduction2 Reactivity Towards Fluoroolefins2.1 Reactivity of Hexafluoropropene2.2 Reactivity of (E)-1,2,3,3,3-Pentafluoropropene2.3 Reactivity of 2,3,3,3-Tetrafluoropropene and (E)-1,3,3,3-Tetrafluoropropene2.4 Reactivity of 3,3,3-Trifluoropropene2.5 Reactivity of Pentafluorostyrene3 Conclusion and Perspective
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Affiliation(s)
- Thomas Braun
- Department of Chemistry, Humboldt-Universität zu Berlin
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38
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Mandal D, Chandra S, Neuman NI, Mahata A, Sarkar A, Kundu A, Anga S, Rawat H, Schulzke C, Mote KR, Sarkar B, Chandrasekhar V, Jana A. Activation of Aromatic C-F Bonds by a N-Heterocyclic Olefin (NHO). Chemistry 2020; 26:5951-5955. [PMID: 32027063 PMCID: PMC7317942 DOI: 10.1002/chem.202000276] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2020] [Indexed: 11/09/2022]
Abstract
A N-heterocyclic olefin (NHO), a terminal alkene selectively activates aromatic C-F bonds without the need of any additional catalyst. As a result, a straightforward methodology was developed for the formation of different fluoroaryl-substituted alkenes in which the central carbon-carbon double bond is in a twisted geometry.
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Affiliation(s)
- Debdeep Mandal
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Shubhadeep Chandra
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Institut für Anorganische ChemieLehrstuhl für Anorganische KoordinationschemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Nicolás I. Neuman
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Instituto de Desarrollo Tecnológico para la Industria QuímicaCCT Santa Fe CONICET-UNLColectora Ruta Nacional 168, Km 472, Paraje El Pozo3000Santa FeArgentina
| | - Alok Mahata
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Arighna Sarkar
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Abhinanda Kundu
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Srinivas Anga
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Hemant Rawat
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Carola Schulzke
- Institut für BiochemieUniversität GreifswaldFelix-Hausdorff-Strasse 417487GreifswaldGermany
| | - Kaustubh R. Mote
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
| | - Biprajit Sarkar
- Institut für Chemie und BiochemieAnorganische ChemieFreie Universität BerlinFabeckstrasse 34–3614195BerlinGermany
- Institut für Anorganische ChemieLehrstuhl für Anorganische KoordinationschemieUniversität StuttgartPfaffenwaldring 5570569StuttgartGermany
| | - Vadapalli Chandrasekhar
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
- Department of ChemistryIndian Institute of Technology KanpurKanpur208016India
| | - Anukul Jana
- Tata Institute of Fundamental Research HyderabadGopanpally, Hyderabad500107India
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39
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Meyer D, El Qacemi M. Applications of 2-Chloro-3,3,3-trifluoroprop-1-ene (HCFO-1233xf): A Rapid Entry to Various β-Substituted-trifluoromethyl-ethenes. Org Lett 2020; 22:3479-3484. [PMID: 32281805 DOI: 10.1021/acs.orglett.0c00931] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
An efficient base-promoted reaction of O-, N-, and S-nucleophiles with 2-chloro-3,3,3-trifluoprop-1-ene (HCFO-1233xf) is described providing access to various β-substituted-trifluoromethyl-ethenes under mild reaction conditions. Mechanistic investigations shed some light on the regio-, chemo-, and stereoselectivities observed. The olefins prepared represent attractive intermediates in chemical discovery: some applications include their conversion to pyrrolidines via a [3 + 2] dipolar cycloaddition reaction. These weakly basic amines represent novel synthons that could be readily elaborated through a range of reactions.
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Affiliation(s)
- Daniel Meyer
- Syngenta Crop Protection Research, Stein, Switzerland
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40
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Phillips NA, Coates GJ, White AJP, Crimmin MR. Defluoroalkylation of sp 3 C-F Bonds of Industrially Relevant Hydrofluoroolefins. Chemistry 2020; 26:5365-5368. [PMID: 32039506 DOI: 10.1002/chem.202000636] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Indexed: 11/08/2022]
Abstract
A simple, one-pot procedure is reported for the selective defluoroalkylation of trifluoromethyl alkene derivatives with aldehydes and ketones. The reaction sequence allows construction of a new C-C bond in a highly selective manner from a single sp3 C-F bond of a CF3 group in the presence of sp2 C-F bonds. The scope incorporates industrially relevant fluorocarbons including HFO-1234yf and HFO-1234ze. No catalyst, additives or transition metals are required, rather the methodology relies on a recently developed boron reagent. Remarkably, the boron site of this reagent plays a dual role in the reaction sequence, being nucleophilic at boron in the C-F cleavage step (SN 2') but electrophilic at boron en route to the carbon-carbon bond-forming step (SE 2'). The duplicitous behaviour is underpinned by a hydrogen atom migration from boron to the carbon atom of a carbene ligand.
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Affiliation(s)
- Nicholas A Phillips
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 80 Wood Lane, White City, Shepherds Bush, London, W12 0BZ, UK
| | - Gregory J Coates
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 80 Wood Lane, White City, Shepherds Bush, London, W12 0BZ, UK
| | - Andrew J P White
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 80 Wood Lane, White City, Shepherds Bush, London, W12 0BZ, UK
| | - Mark R Crimmin
- Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, 80 Wood Lane, White City, Shepherds Bush, London, W12 0BZ, UK
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41
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Schuhknecht D, Leich V, Spaniol TP, Douair I, Maron L, Okuda J. Alkali Metal Triphenyl- and Trihydridosilanides Stabilized by a Macrocyclic Polyamine Ligand. Chemistry 2020; 26:2821-2825. [PMID: 31943432 PMCID: PMC7079104 DOI: 10.1002/chem.202000187] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2020] [Indexed: 12/28/2022]
Abstract
Potassium silanide [KSiH3]∞ contains 4.2 wt % of hydrogen and has been intensely studied as hydrogen storage material. The macrocyclic ligand Me4TACD (1,4,7,10‐tetramethyl‐1,4,7,10‐tetraaminocyclododecane, L) stabilizes the full range of triphenylsilyl complexes [(L)MSiPh3]n (M=Li–Cs), which react with H2 or PhSiH3 to form molecular [(L)MSiH3]n that can be isolated in soluble form and fully characterized.
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Affiliation(s)
- Danny Schuhknecht
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Valeri Leich
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Thomas P Spaniol
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
| | - Iskander Douair
- CNRS, INSA, UPS, UMR 5215, LPCNO, Université de Toulouse, 135 avenue de Rangueil, 31077, Toulouse, France
| | - Laurent Maron
- CNRS, INSA, UPS, UMR 5215, LPCNO, Université de Toulouse, 135 avenue de Rangueil, 31077, Toulouse, France
| | - Jun Okuda
- Institute of Inorganic Chemistry, RWTH Aachen University, Landoltweg 1, 52074, Aachen, Germany
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42
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Yang Y, Luo G, Li Y, Tong X, He M, Zeng H, Jiang Y, Liu Y, Zheng Y. Nickel-Catalyzed Reductive Coupling for Transforming Unactivated Aryl Electrophiles into β-Fluoroethylarenes. Chem Asian J 2020; 15:156-162. [PMID: 31755237 DOI: 10.1002/asia.201901490] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2019] [Revised: 11/21/2019] [Indexed: 01/24/2023]
Abstract
We report herein a facile synthetic method for converting unactivated (hetero)aryl electrophiles into β-fluoroethylated (hetero)arenes via nickel-catalyzed reductive cross-couplings. This coupling reaction features the involvement of FCH2 CH2 radical intermediate rather than β-fluoroethyl manganese species which provides effective solutions to the problematic β-fluoride side eliminations. The practical value of this protocol is further demonstrated by the late-stage modification of several complex ArCl or ArOH-derived bioactive molecules.
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Affiliation(s)
- Yi Yang
- College of Chemistry and Environmental Engineering, Sichuan University of Science&Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan, 643000, China
| | - Gen Luo
- College of Chemistry and Environmental Engineering, Sichuan University of Science&Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan, 643000, China
| | - Youlin Li
- College of Chemistry and Environmental Engineering, Sichuan University of Science&Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan, 643000, China
| | - Xia Tong
- College of Chemistry and Environmental Engineering, Sichuan University of Science&Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan, 643000, China
| | - Mengmeng He
- College of Chemistry and Environmental Engineering, Sichuan University of Science&Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan, 643000, China
| | - Hongyao Zeng
- College of Chemistry, Leshan Normal University, 778 Binghe Road, Leshan, Sichuan, 614000, China
| | - Yan Jiang
- College of Chemistry and Environmental Engineering, Sichuan University of Science&Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan, 643000, China
| | - Yingle Liu
- College of Chemistry and Environmental Engineering, Sichuan University of Science&Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan, 643000, China
| | - Yubin Zheng
- College of Chemistry and Environmental Engineering, Sichuan University of Science&Engineering, 180 Xueyuan Street, Huixing Lu, Zigong, Sichuan, 643000, China
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43
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Gao P, Gao L, Xi L, Zhang Z, Li S, Shi Z. Enantioselective copper-catalysed defluorosilylation of trifluoro-methylated alkenes with silylboronates. Org Chem Front 2020. [DOI: 10.1039/d0qo00773k] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the construction of gem-difluoroallylsilanes with high enantiomeric excess via a copper-catalysed defluorosilylation of trifluoromethylated alkenes with silylboronates is described.
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Affiliation(s)
- Pan Gao
- State Key Laboratory of Coordination Chemistry
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Liuzhou Gao
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education
- Institute of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Longlong Xi
- State Key Laboratory of Coordination Chemistry
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Zedong Zhang
- State Key Laboratory of Coordination Chemistry
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
| | - Shuhua Li
- Key Laboratory of Mesoscopic Chemistry of Ministry of Education
- Institute of Theoretical and Computational Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing 210093
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry
- Chemistry and Biomedicine Innovation Center (ChemBIC)
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
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44
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Murray BJ, Ball ED, Harsanyi A, Sandford G. 2,3,3,3-Tetrafluoropropene (HFO-1234yf) as a CF3
-Building Block: Synthesis of Enol Ethers and Vinyl Sulfides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901445] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Ben J. Murray
- Department of Chemistry; Durham University; South Road DH1 3LE Durham UK
| | - Ellis D. Ball
- Department of Chemistry; Durham University; South Road DH1 3LE Durham UK
| | - Antal Harsanyi
- Medicines Research Centre; GlaxoSmithKline R&D Ltd; Gunnels Wood Road SG1 2NY Stevenage Hertfordshire UK
| | - Graham Sandford
- Department of Chemistry; Durham University; South Road DH1 3LE Durham UK
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