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Sumii Y, Shibata N. Current State of Microflow Trifluoromethylation Reactions. CHEM REC 2023; 23:e202300117. [PMID: 37309300 DOI: 10.1002/tcr.202300117] [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: 04/03/2023] [Revised: 05/25/2023] [Indexed: 06/14/2023]
Abstract
The trifluoromethyl group is a powerful structural motif in drugs and polymers; thus, developing trifluoromethylation reactions is an important area of research in organic chemistry. Over the past few decades, significant progress has been made in developing new methods for the trifluoromethylation of organic molecules, ranging from nucleophilic and electrophilic approaches to transition-metal catalysis, photocatalysis, and electrolytic reactions. While these reactions were initially developed in batch systems, more recent microflow versions are highly attractive for industrial applications owing to their scalability, safety, and time efficiency. In this review, we discuss the current state of microflow trifluoromethylation. Approaches for microflow trifluoromethylation based on different trifluoromethylation reagents are described, including continuous flow, flow photochemical, microfluidic electrochemical reactions, and large-scale microflow reactions.
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Affiliation(s)
- Yuji Sumii
- Department of Engineering, Nagoya Institute of Technology, Gokiso, Showa-Ku, Nagoya, 466-8555, Japan
| | - Norio Shibata
- Department of Engineering, Nagoya Institute of Technology, Gokiso, Showa-Ku, Nagoya, 466-8555, Japan
- Department of Nanopharmaceutical Sciences, Department of Engineering, Nagoya Institute of Technology, Gokiso, Showa-Ku, Nagoya, 466-8555, Japan
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Gonçalves MA, Gonçalves AS, Franca TCC, Santana MS, da Cunha EFF, Ramalho TC. Improved Protocol for the Selection of Structures from Molecular Dynamics of Organic Systems in Solution: The Value of Investigating Different Wavelet Families. J Chem Theory Comput 2022; 18:5810-5818. [DOI: 10.1021/acs.jctc.2c00593] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Mateus A. Gonçalves
- Chemistry Department, Federal University of Lavras, 37200-000Lavras, MG, Brazil
| | - Arlan S. Gonçalves
- Federal Institute of Education Science and Technology of Espírito Santo, Vila Velha29100-000, Brazil
- Federal Institute of Education Science and Technology of Espírito Santo, Unit Goiabeiras, 29056-264Vitória, Espírito Santo, Brazil
| | - Tanos C. C. Franca
- Laboratory of Molecular Modeling Applied to Chemical and Biological Defense (LMACBD), Military Institute of Engineering (IME), Rio de Janeiro22290-270, Brazil
| | - Mozarte S. Santana
- Chemistry Department, Federal University of Lavras, 37200-000Lavras, MG, Brazil
| | | | - Teodorico C. Ramalho
- Chemistry Department, Federal University of Lavras, 37200-000Lavras, MG, Brazil
- Faculty of Informatics and Management, Center for Basic and Applied Research, University of Hradec Kralove, Hradec Kralove50003, Czech Republic
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Ameduri B. Copolymers of Vinylidene fluoride with Functional comonomers and Applications therefrom: Recent Developments, Challenges and Future Trends. Prog Polym Sci 2022. [DOI: 10.1016/j.progpolymsci.2022.101591] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/15/2022]
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Tretyakov EV, Ovcharenko VI, Terent'ev AO, Krylov IB, Magdesieva TV, Mazhukin DG, Gritsan NP. Conjugated nitroxide radicals. RUSSIAN CHEMICAL REVIEWS 2022. [DOI: 10.1070/rcr5025] [Citation(s) in RCA: 17] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Tagami T, Aoki Y, Kawamura S, Sodeoka M. 1,2-Bis-perfluoroalkylations of alkenes and alkynes with perfluorocarboxylic anhydrides via the formation of perfluoroalkylcopper intermediates. Org Biomol Chem 2021; 19:9148-9153. [PMID: 34523640 DOI: 10.1039/d1ob01529j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel, Cu-mediated protocol toward the 1,2-bis-perfluoroalkyaltion of alkenes/alkynes was developed. The method proceeded with perfluorocarboxylic anhydrides as inexpensive and readily available perfluoroalkyl sources. Diacyl peroxide was generated in situ from the perfluorocarboxylic anhydrides and H2O2. The key step in this reaction is the formation of a stable perfluoroalkylcopper intermediate that is achieved with the aid of a bipyridyl ligand. Subsequent reaction of the intermediate with perfluoroalkyl-containing alkyl or vinyl radicals affords the desired products.
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Affiliation(s)
- Takuma Tagami
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
| | - Yuma Aoki
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan.
| | - Shintaro Kawamura
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. .,Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Mikiko Sodeoka
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan. .,Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, RIKEN, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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Yu Y, Liu A, Dhawan G, Mei H, Zhang W, Izawa K, Soloshonok VA, Han J. Fluorine-containing pharmaceuticals approved by the FDA in 2020: Synthesis and biological activity. CHINESE CHEM LETT 2021. [DOI: 10.1016/j.cclet.2021.05.042] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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Briou B, Gimello O, Totee C, Ono T, Ameduri B. May Trifluoromethylation and Polymerization of Styrene Occur from a Perfluorinated Persistent Radical (PPFR)? Chemistry 2020; 26:16001-16010. [PMID: 32853467 DOI: 10.1002/chem.202002602] [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: 05/28/2020] [Revised: 08/12/2020] [Indexed: 11/06/2022]
Abstract
The radical polymerization of styrene (St) initiated by a trifluoromethyl radical generated from a perfluorinated highly branched persistent radical (PPFR) is presented with an isolated yield above 70 %. The release of . CF3 radical occurred from a temperature above 85 °C. Deeper 1 H and 19 F NMR spectroscopies of the resulting fluorinated polystyrenes (CF3 -PSts) evidenced the presence of both CF3 end-group of the PSt chain and the trifluoromethylation of the phenyl ring (in meta-position mainly). [PPFR]0 /[St]0 initial molar ratios of 3:1, 3:10 and 3:100 led to various molar masses ranging from 1750 to 5400 g mol-1 in 70-86 % yields. MALDI-TOF spectrometry of such CF3 -PSts highlighted polymeric distributions which evidenced differences between m/z fragments of 104 and 172 corresponding to styrene and trifluoromethyl styrene units, respectively. Such CF3 -PSt polymers were also compared to conventional PSts produced from the radical polymerization of St initiated by a peroxydicarbonate initiator. A mechanism of the polymerization is presented showing the formation of a trifluoromethyl styrene first, followed by its radical (co)polymerization with styrene. The thermal properties (thermal stability and glass transition temperature, Tg ) of these polymers were also compared and revealed a much better thermal stability of the CF3 -PSt (10 % weight loss at 356-376 °C) and a Tg of around 70 °C.
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Affiliation(s)
- Benoit Briou
- ICGM, ENSCM, CNRS, Université Montpellier, 34296, Montpellier, France
| | - Olinda Gimello
- ICGM, ENSCM, CNRS, Université Montpellier, 34296, Montpellier, France
| | - Cedric Totee
- PAC CNRS-UM-ENSCM, ICGM Montpellier, 34296, Montpellier, France
| | - Taizo Ono
- Fluorine Division, Research & Development Center, Mitsubishi Materials Electronic Chemicals Co, Ltd, 3-1-6, Barajima, Akita, 010-8585, Japan
| | - Bruno Ameduri
- ICGM, ENSCM, CNRS, Université Montpellier, 34296, Montpellier, France
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Confer MP, Allayarov SR, Kim IP, Markin I, Jackson VE, Dixon DA. Direct fluorination of tetrafluoroethylene at low temperatures. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109493] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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Gao F, Meng FX, Du JY, Zhang S, Huang HL. One-Step Synthesis of Trifluoroethylated Chromones via Radical Cascade Cyclization-Coupling of 2-(Allyloxy)arylaldehydes. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901636] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Fei Gao
- Institute of Molecular Medicine; Renji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
| | - Fan-Xiao Meng
- College of Chemistry and Chemical Engineering; Liaocheng University; 252059 Liaocheng Shandong China
| | - Ji-Yuan Du
- College of Chemistry and Chemical Engineering; Liaocheng University; 252059 Liaocheng Shandong China
| | - Shiyan Zhang
- Institute of Molecular Medicine; Renji Hospital, School of Medicine; Shanghai Jiao Tong University; 200127 Shanghai China
| | - Hong-Li Huang
- College of Chemistry and Chemical Engineering; Liaocheng University; 252059 Liaocheng Shandong China
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Tretyakov E, Fedyushin P, Panteleeva E, Gurskaya L, Rybalova T, Bogomyakov A, Zaytseva E, Kazantsev M, Shundrina I, Ovcharenko V. Aromatic S NF-Approach to Fluorinated Phenyl tert-Butyl Nitroxides. Molecules 2019; 24:molecules24244493. [PMID: 31817965 PMCID: PMC6943699 DOI: 10.3390/molecules24244493] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2019] [Revised: 12/03/2019] [Accepted: 12/05/2019] [Indexed: 11/16/2022] Open
Abstract
The interaction of octafluorotoluene (1a), as well as pentafluorobenzonitrile (1b) with tert-butylamine, followed by the oxidation of thus formed tert-butylanilines (2a,b) with meta-chloroperoxybenzoic acid led to functionalized perfluorinated phenyl tert-butyl nitroxides [namely, 4-(N-tert-butyl(oxyl)amino)heptafluorotoluene (3a) and 4-(N-tert-butyl(oxyl)amino)tetrafluorobenzonitrile (3b)] with nearly quantitative total yields. The molecular and crystal structures of nitroxide 3a were proved by single crystal X-ray diffraction analysis. The radical nature of both nitroxides was confirmed by ESR data. The interaction of Cu(hfac)2 with the obtained nitroxides 3a,b gave corresponding trans-bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato-κ2O,O′)bis{4-(N-tert-butyl(oxyl)amino)perfluoroarene-κO}copper (II) complexes ([Cu(hfac)2(3a)2] and [Cu(hfac)2(3b)2]). X-ray crystal structure analysis showed square bipyramid coordination of a centrally symmetric Cu polyhedron with the axial positions occupied by oxygen atoms of the nitroxide groups. Magnetic measurements revealed intramolecular ferromagnetic exchange interactions between unpaired electrons of Cu(II) ions and paramagnetic ligands, with exchange interaction parameters JCu–R reaching 53 cm−1.
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Affiliation(s)
- Evgeny Tretyakov
- N. N. Vorozhtsov Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, 630090 Novosibirsk, Russia; (P.F.); (E.P.); (L.G.); (T.R.); (E.Z.); (M.K.); (I.S.)
- Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia;
- Correspondence: (E.T.); (V.O.)
| | - Pavel Fedyushin
- N. N. Vorozhtsov Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, 630090 Novosibirsk, Russia; (P.F.); (E.P.); (L.G.); (T.R.); (E.Z.); (M.K.); (I.S.)
| | - Elena Panteleeva
- N. N. Vorozhtsov Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, 630090 Novosibirsk, Russia; (P.F.); (E.P.); (L.G.); (T.R.); (E.Z.); (M.K.); (I.S.)
- Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia;
| | - Larisa Gurskaya
- N. N. Vorozhtsov Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, 630090 Novosibirsk, Russia; (P.F.); (E.P.); (L.G.); (T.R.); (E.Z.); (M.K.); (I.S.)
| | - Tatyana Rybalova
- N. N. Vorozhtsov Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, 630090 Novosibirsk, Russia; (P.F.); (E.P.); (L.G.); (T.R.); (E.Z.); (M.K.); (I.S.)
- Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia;
| | - Artem Bogomyakov
- Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia;
- International Tomography Center, 3a Institutskaya Str., 630090 Novosibirsk, Russia
| | - Elena Zaytseva
- N. N. Vorozhtsov Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, 630090 Novosibirsk, Russia; (P.F.); (E.P.); (L.G.); (T.R.); (E.Z.); (M.K.); (I.S.)
- Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia;
| | - Maxim Kazantsev
- N. N. Vorozhtsov Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, 630090 Novosibirsk, Russia; (P.F.); (E.P.); (L.G.); (T.R.); (E.Z.); (M.K.); (I.S.)
| | - Inna Shundrina
- N. N. Vorozhtsov Institute of Organic Chemistry, 9 Ac. Lavrentiev Avenue, 630090 Novosibirsk, Russia; (P.F.); (E.P.); (L.G.); (T.R.); (E.Z.); (M.K.); (I.S.)
- Novosibirsk State University, 2 Pirogova Str., 630090 Novosibirsk, Russia;
| | - Victor Ovcharenko
- International Tomography Center, 3a Institutskaya Str., 630090 Novosibirsk, Russia
- Correspondence: (E.T.); (V.O.)
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