1
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Deliaval M, Jayarajan R, Eriksson L, Szabó KJ. Three-Component Approach to Densely Functionalized Trifluoromethyl Allenols by Asymmetric Organocatalysis. J Am Chem Soc 2023; 145:10001-10006. [PMID: 37126044 PMCID: PMC10176480 DOI: 10.1021/jacs.3c02852] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2023]
Abstract
We have developed a new three-component catalytic coupling reaction of alkynyl boronates, diazomethanes, and aliphatic/aromatic ketones in the presence of BINOL derivatives. The reaction proceeds with a remarkably high enantio- and diastereoselectivity (up to three contiguous stereocenters) affording tertiary CF3-allenols in a single operational step. The reaction proceeds under mild, neutral, metal-free conditions, which leads to a high level of functional group tolerance.
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Affiliation(s)
- Marie Deliaval
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Ramasamy Jayarajan
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Lars Eriksson
- Department of Materials and Environmental Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Kálmán J Szabó
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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2
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Shen Q. A Toolbox of Reagents for Trifluoromethylthiolation: From Serendipitous Findings to Rational Design. J Org Chem 2023; 88:3359-3371. [PMID: 36795864 DOI: 10.1021/acs.joc.2c02777] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023]
Abstract
Two types of electrophilic trifluoromethylthiolating reagents were developed in the past 10 years in our laboratory. The development of the first type of reagent, trifluoromethanesulfenate I, which is highly reactive toward a variety of nucleophiles, was based on an unexpected discovery in the initial design for the development of an electrophilic trifluoromethylthiolating reagent with a hypervalent iodine skeleton. A structure-activity study disclosed that α-cumyl trifluoromethanesulfenate (reagent II) without the iodo substituent is equally effective. Subsequent derivatization let us develop an α-cumyl bromodifluoromethanesulfenate III that could be used for the preparation of [18F]ArSCF3. To remediate the low reactivity of the type I electrophilic trifluoromethylthiolating reagent for Friedel-Crafts trifluoromethylthiolation of electron-rich (hetero)arenes, we designed and prepared N-trifluoromethylthiosaccharin IV, which exhibits broad reactivity toward various nucleophiles, including electron-rich arenes. A comparison of the structure of N-trifluoromethylthiosaccharin IV with that of N-trifluoromethylthiophthalimide showed that the replacement of one carbonyl group in N-trifluoromethylthiophthalimide with a sulfonyl group made N-trifluoromethylthiosaccharin IV much more electrophilic. Thus, the replacement of both carbonyls with two sulfonyl groups would further increase the electrophilicity. Such a rationale prompted us to design and develop the current most electrophilic trifluoromethylthiolating reagent, N-trifluoromethylthiodibenzenesulfonimide V, and its reactivity was much higher than that of N-trifluoromethylthiosaccharin IV. We further developed an optically pure electrophilic trifluoromethylthiolating reagent, (1S)-(-)-N-trifluoromethylthio-2,10-camphorsultam VI, for the preparation of optically active trifluoromethylthio-substituted carbon stereogenic centers. Reagents I-VI now constitute a powerful toolbox for the introduction of the trifluoromethylthio group into the target molecules.
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Affiliation(s)
- Qilong Shen
- Key Laboratory of Organofluorine Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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3
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Hernández-Negrete O, Sotelo-Mundo RR, Esparza-Ponce HE, Encinas-Romero MA, Hernández-Paredes J. New hydrate cocrystal of l-proline with 4-acetylphenylboronic acid obtained via mechanochemistry and solvent evaporation: An experimental and theoretical study. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123282] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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4
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Xiao Y, Zhou Q, Fu Z, Yu L, Wang J. Synthesis of Poly(β-hydroxyketone)s with Three-Component Polymerization of Diazocarbonyl Compounds, Triethylboron, and Aldehydes. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02348] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Yiyang Xiao
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Qi Zhou
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Zihao Fu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Lefei Yu
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
| | - Jianbo Wang
- Beijing National Laboratory of Molecular Sciences (BNLMS) and Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing 100871, China
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5
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Xiao Y, Jia Y, Huang J, Li X, Zhou Z, Zhang J, Jiang M, Zhou X, Jiang Z, Yang Z. Synthesis of SCF
3
‐Substituted Sulfonium Ylides from Sulfonium Salts or α‐Bromoacetic Esters. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202101271] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Yushan Xiao
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals School of Pharmaceutical Sciences Wuhan University Wuhan 430071 People's Republic of China
| | - Yimin Jia
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals School of Pharmaceutical Sciences Wuhan University Wuhan 430071 People's Republic of China
| | - Jinfeng Huang
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals School of Pharmaceutical Sciences Wuhan University Wuhan 430071 People's Republic of China
| | - Xiangyu Li
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals School of Pharmaceutical Sciences Wuhan University Wuhan 430071 People's Republic of China
| | - Zhiwen Zhou
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals School of Pharmaceutical Sciences Wuhan University Wuhan 430071 People's Republic of China
| | - Jing Zhang
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals School of Pharmaceutical Sciences Wuhan University Wuhan 430071 People's Republic of China
| | - Mou Jiang
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics National Center for Magnetic Resonance in Wuhan Wuhan Institute of Physics and Mathematics Innovative Academy of Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 People's Republic of China
| | - Xin Zhou
- State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics National Center for Magnetic Resonance in Wuhan Wuhan Institute of Physics and Mathematics Innovative Academy of Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 People's Republic of China
| | - Zhong‐Xing Jiang
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals School of Pharmaceutical Sciences Wuhan University Wuhan 430071 People's Republic of China
| | - Zhigang Yang
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals School of Pharmaceutical Sciences Wuhan University Wuhan 430071 People's Republic of China
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6
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Mizuta S, Kitamura K, Morii Y, Ishihara J, Yamaguchi T, Ishikawa T. Trifluoromethylthiolation of Hindered α-Bromoamides with Nucleophilic Trifluoromethylthiolating Reagents. J Org Chem 2021; 86:18017-18029. [PMID: 34855413 DOI: 10.1021/acs.joc.1c02316] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
General methods have not been previously developed for the synthesis of sterically hindered α-SCF3-substituted carbonyl compounds using nucleophilic trifluoromethylthiolating reagents. Thus, we herein report sp3C-SCF3 bond formation in hindered α-bromoamides containing 3-bromo-oxindoles and linear α-bromoamides using CuSCF3 or AgSCF3 under mild conditions to access sterically hindered α-SCF3-substituted amides. This transformation is applicable to not only 3-SCF3-substituted oxindoles but also primary and secondary amides and reveals a broad functional group tolerance. This method will benefit the fields of medicinal and agricultural chemistry.
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Affiliation(s)
- Satoshi Mizuta
- Center for Bioinformatics and Molecular Medicine, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan
| | - Kanami Kitamura
- Center for Bioinformatics and Molecular Medicine, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan
| | - Yuki Morii
- Department of Pharmaceutical Organic Chemistry, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan
| | - Jun Ishihara
- Department of Pharmaceutical Organic Chemistry, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan
| | - Tomoko Yamaguchi
- Center for Bioinformatics and Molecular Medicine, Graduate School of Biomedical Sciences, Nagasaki University, 1-14 Bunkyo, Nagasaki 852-8521, Japan
| | - Takeshi Ishikawa
- Department of Chemistry, Biotechnology, and Chemical Engineering, Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan
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7
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Bakulina O, Inyutina A, Dar’in D, Krasavin M. Multicomponent Reactions Involving Diazo Reagents: A 5-Year Update. Molecules 2021; 26:6563. [PMID: 34770972 PMCID: PMC8587191 DOI: 10.3390/molecules26216563] [Citation(s) in RCA: 6] [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: 10/12/2021] [Revised: 10/25/2021] [Accepted: 10/26/2021] [Indexed: 01/18/2023] Open
Abstract
This review summarizes recent developments in multicomponent reactions of diazo compounds. The role of diazo reagent and the type of interaction between components was analyzed to structure the discussion. In contrast to previous reviews on related topics mostly focused on metal catalyzed transformations, a substantial amount of organocatalytic or catalyst-free methodologies is covered in this work.
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Affiliation(s)
- Olga Bakulina
- Institute of Chemistry, St. Petersburg State University, 26 Universitetskii Pr., 198504 Peterhof, Russia; (A.I.); (D.D.)
| | | | | | - Mikhail Krasavin
- Institute of Chemistry, St. Petersburg State University, 26 Universitetskii Pr., 198504 Peterhof, Russia; (A.I.); (D.D.)
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8
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Szabó KJ, Lübcke M. Diazocarbonyl Compounds in Organofluorine Chemistry. Synlett 2021. [DOI: 10.1055/a-1297-6902] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
AbstractDiazocarbonyl compounds are useful substrates in di- and trifunctionalization reactions based on F/CF3/SCF3 introduction. In the presented reactions, various electrophilic F/CF3/SCF3-transfer reagents were used. The majority of the reactions were based on rhodium catalysis and the application of various oxygen nucleophiles, such as alcohols, cyclic/acyclic ethers, and carboxylic acids. The oxyfluorination reactions were further developed to provide a new fluorine-18 labeling method. Density functional theory (DFT) modeling studies were performed to get a deeper mechanistic understanding of these reactions. These DFT modeling studies indicated that the catalytic reactions proceed through formation of rhodium carbene and oxonium ylide intermediates. The oxonium ylides undergo tautomerization to enol ether type species that subsequently react with the electrophilic F/CF3/SCF3-transfer reagents. We
also present an arylation–trifluoromethylthiolation reaction for simultaneous introduction of C–SCF3 and C–C bonds into diazocarbonyl compounds. This reaction does not proceed by rhodium catalysis, but follows a Hooz-type mechanism.1 Introduction2 Diazocarbonyl Compounds: Versatile Substrates in Organic Synthesis3 Fluorination, Trifluoromethylation, and Trifluoromethylthiolation of Diazo Substrates3.1 Metal-Free Reactions3.2 Metal-Catalyzed Reactions with Nucleophilic Reagents3.3 Metal-Catalyzed Reactions with Electrophilic Reagents4 Oxyfluorination Reactions4.1 Fluorobenziodoxole as a Fluorine Source4.2 [18F]Fluorobenziodoxole as a Fluorine Source for Radiolabeling4.3 Oxyfluorination with NFSI5 Oxytrifluoromethylation6 Oxytrifluoromethylthiolation7 Arylation–Trifluoromethylthiolation Reaction8 Conclusions and Outlook
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Affiliation(s)
- Kálmán J. Szabó
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University
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9
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New visible light organo(metal)-photocatalyzed fluoroalkylsulfanylation (RFS-) and fluoroalkylselenolation (RFSe-) reactions of organic substrates. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109652] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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10
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Jin MY, Gu X, Deng M, Wang C, Wang JJ. Catalytic mutual multicomponent reaction: facile access to α-trifluoromethylthiolated ketones. Chem Commun (Camb) 2020; 56:10552-10555. [PMID: 32785314 DOI: 10.1039/d0cc04555a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A multicomponent catalytic reaction between ketones, Morita-Baylis-Hillman (MBH) carbonates and trifluoromethylthiolating agents is devised for straightforwardly accessing two products, α-trifluoromethylthiolated ketones and α-methylene β-amino esters in a one pot fashion. Particularly noteworthy is that the trifluoromethylthiolating reagent is employed as both the nitrogen and SCF3 source initiated by DABCO. This mild one pot strategy enjoys atom- and step-economic attractiveness, for direct introduction of an SCF3 group onto a variety of acyclic ketones, which have been considered as less effective and less developed substrates.
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Affiliation(s)
- Ming Yu Jin
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China.
| | - Xiaodong Gu
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China.
| | - Min Deng
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China.
| | - Chuancheng Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China.
| | - Jun Joelle Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, Guangdong, China. and Department of Chemistry, Hong Kong Baptist University, Kowloon, Hong Kong
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11
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Transition‐Metal‐Free C(sp
2
)–C(sp
2
) Cross‐Coupling of Diazo Quinones with Catechol Boronic Esters. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202006542] [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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12
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Pisella G, Gagnebin A, Waser J. Three-Component Reaction for the Synthesis of Highly Functionalized Propargyl Ethers. Chemistry 2020; 26:10199-10204. [PMID: 32187739 DOI: 10.1002/chem.202001317] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Indexed: 12/27/2022]
Abstract
Multicomponent reactions provide efficient means to access molecular complexity. Herein, we report a copper-catalyzed three-component reaction of diazo compounds, alcohols and ethynyl benziodoxole (EBX) reagents for the synthesis of propargyl ethers. Extensive variations of the three partners of the reaction is possible, leading to highly functionalized and structurally diverse products under mild conditions. Alkynylation of a copper ylide intermediate is postulated as key step for this transformation.
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Affiliation(s)
- Guillaume Pisella
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
| | - Alec Gagnebin
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
| | - Jérôme Waser
- Laboratory of Catalysis and Organic Synthesis, Ecole Polytechnique Fédérale de Lausanne, EPFL, SB ISIC LCSO, BCH 4306, 1015, Lausanne, Switzerland
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13
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Wu K, Wu LL, Zhou CY, Che CM. Transition-Metal-Free C(sp 2 )-C(sp 2 ) Cross-Coupling of Diazo Quinones with Catechol Boronic Esters. Angew Chem Int Ed Engl 2020; 59:16202-16208. [PMID: 32558142 DOI: 10.1002/anie.202006542] [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: 05/06/2020] [Indexed: 12/11/2022]
Abstract
A transition-metal-free C(sp2 )-C(sp2 ) bond formation reaction by the cross-coupling of diazo quinones with catechol boronic esters was developed. With this protocol, a variety of biaryls and alkenyl phenols were obtained in good to high yields under mild conditions. The reaction tolerates various functionalities and is applicable to the derivatization of pharmaceuticals and natural products. The synthetic utility of the method was demonstrated by the short synthesis of multi-substituted triphenylenes and three bioactive natural products, honokiol, moracin M, and stemofuran A. Mechanistic studies and density functional theory (DFT) calculations revealed that the reaction involves attack of the boronic ester by a singlet quinone carbene followed by a 1,2-rearrangement through a stepwise mechanism.
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Affiliation(s)
- Kai Wu
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.,HKU Shenzhen Institute of Research & Innovation, Shenzhen, China
| | - Liang-Liang Wu
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China
| | - Cong-Ying Zhou
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.,HKU Shenzhen Institute of Research & Innovation, Shenzhen, China.,Present address: College of Chemistry and Materials Science, Jinan University, Guangzhou, China
| | - Chi-Ming Che
- State Key Laboratory of Synthetic Chemistry, Department of Chemistry, The University of Hong Kong, Pokfulam Road, Hong Kong, China.,HKU Shenzhen Institute of Research & Innovation, Shenzhen, China
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14
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Jiang X, Meyer D, Baran D, Cortés González MA, Szabó KJ. Trifluoromethylthiolation, Trifluoromethylation, and Arylation Reactions of Difluoro Enol Silyl Ethers. J Org Chem 2020; 85:8311-8319. [PMID: 32441100 PMCID: PMC7339110 DOI: 10.1021/acs.joc.0c01030] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
![]()
This study reports a new application
area of difluoro enol silyl
ethers, which can be easily obtained from trifluoromethyl ketones.
The main focus has been directed to the electrophilic fluoroalkylation
and arylation methods. The trifluoromethylthiolation of difluoro enol
silyl ethers can be used for the construction of a novel trifluoromethylthio-α,α-difluoroketone
(−COCF2SCF3) functionality. The −CF2SCF3 moiety has interesting properties due to the
electron-withdrawing, albeit lipophilic, character of the SCF3 group, which can be combined with the high electrophilicity
of the difluoroketone motif. The methodology could also be extended
to difluoro homologation of the trifluoromethyl ketones using the
Togni reagent. In addition, we presented a method for transition-metal-free
arylation of difluoro enol silyl ethers based on hypervalent iodines.
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Affiliation(s)
- Xingguo Jiang
- Department of Organic Chemistry, Stockholm University, Stockholm SE-106 91, Sweden
| | - Denise Meyer
- Department of Organic Chemistry, Stockholm University, Stockholm SE-106 91, Sweden
| | - Dominik Baran
- Department of Organic Chemistry, Stockholm University, Stockholm SE-106 91, Sweden
| | | | - Kálmán J Szabó
- Department of Organic Chemistry, Stockholm University, Stockholm SE-106 91, Sweden
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15
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Wu S, Song H, Zhang C. Fluoroalkylation of Diazo Compounds with Diverse R
fn
Reagents. Chem Asian J 2020; 15:1660-1677. [DOI: 10.1002/asia.202000305] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 04/05/2020] [Indexed: 11/06/2022]
Affiliation(s)
- Shuai Wu
- School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology 205 Luoshi Road Wuhan 430070 China
| | - Hai‐Xia Song
- School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology 205 Luoshi Road Wuhan 430070 China
| | - Cheng‐Pan Zhang
- School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology 205 Luoshi Road Wuhan 430070 China
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16
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Halder P, Pol MD, Ahire MM, Mhaske SB. Construction of unique SCF 3-containing building blocks via allylic alkylation of Morita-Baylis-Hillman adducts. Org Biomol Chem 2020; 18:2085-2093. [PMID: 32115601 DOI: 10.1039/d0ob00104j] [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
Lewis base-catalyzed allylic alkylation of Morita-Baylis-Hillman adducts with α-SCF3 ketones has been demonstrated. The developed strategy provides efficient access to a series of highly functionalized scaffolds featuring trifluoromethanesufinyl motif on a stereogenic carbon.
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Affiliation(s)
- Priyanka Halder
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Pune - 411008, India.
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17
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Qin H, Jia Y, Wang N, Jiang ZX, Yang Z. Practical and regioselective halo-trifluoromethylthiolation of sulfur ylides. Chem Commun (Camb) 2020; 56:8265-8268. [PMID: 32568315 DOI: 10.1039/d0cc03171b] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A H2O mediated practical and highly regioselective chloro- and bromo-trifluoromethylthiolation of sulfur ylides is reported using a difunctionalization strategy. In the reaction sequence, sulfur ylides presumably react with an electrophilic trifluoromethylthiolating reagent to generate an α-SCF3 substituted sulfonium salt intermediate, which then undergoes a substitution with nucleophilic halogens.
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Affiliation(s)
- Hongmei Qin
- Hubei Province Engineering and Technology Research Center for Fluorinated Pharmaceuticals, School of Pharmaceutical Sciences, Wuhan University, 185 Donghu Road, Wuhan 430071, China.
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18
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Franco F, Meninno S, Benaglia M, Lattanzi A. Formal α-trifluoromethylthiolation of carboxylic acid derivatives via N-acyl pyrazoles. Chem Commun (Camb) 2020; 56:3073-3076. [DOI: 10.1039/d0cc00116c] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
A direct and general one-pot approach to α-trifluoromethylthiolated amides, esters and carboxylic acids has been successfully developed under mild, catalytic and metal-free conditions.
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Affiliation(s)
- Francesca Franco
- Dipartimento di Chimica e Biologia
- Università di Salerno
- Fisciano
- Italy
| | - Sara Meninno
- Dipartimento di Chimica e Biologia
- Università di Salerno
- Fisciano
- Italy
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19
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Cortés González MA, Jiang X, Nordeman P, Antoni G, Szabó KJ. Rhodium-mediated 18F-oxyfluorination of diazoketones using a fluorine-18-containing hypervalent iodine reagent. Chem Commun (Camb) 2019; 55:13358-13361. [PMID: 31625541 DOI: 10.1039/c9cc06905d] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
α-[18F]Fluoro ethers were obtained from diazocarbonyl compounds using a hypervalent iodine based fluorine-18 reagent.
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Affiliation(s)
| | - Xingguo Jiang
- Department of Organic Chemistry
- Stockholm University
- Sweden
| | | | - Gunnar Antoni
- Department of Medicinal Chemistry
- Uppsala University
- Sweden
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20
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Abstract
A Ni(i)/Ni(iii) catalytic cycle allows aryl trifluoromethyl sulfides to be obtained at room temperature from [NMe4][SCF3] and aryl halides.
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Affiliation(s)
- Jesús Jover
- Departament de Química Inorgànica i Orgànica
- Secció de Química Inorgànica and Institut de Química Teòrica i Computacional (IQTC-UB)
- Universitat de Barcelona
- 08028 Barcelona
- Spain
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