1
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Tarui A, Shimomura H, Yasuno Y, Karuo Y, Sato K, Kawai K, Omote M. Decarboxylative Aldol Reaction of α,α-Difluoro-β-keto Esters: Easy Access to Difluoroenolate. ACS OMEGA 2024; 9:26275-26284. [PMID: 38911753 PMCID: PMC11190933 DOI: 10.1021/acsomega.4c02105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Revised: 04/26/2024] [Accepted: 05/23/2024] [Indexed: 06/25/2024]
Abstract
Yb(OTf)3 promoted the Krapcho decarboxylation of 2,2-difluoro-3-oxopropanoate, and a subsequent aldol reaction was achieved. This process is the first example of generating difluoroenolates through a decarboxylation-type process, and a large number of carbonyl compounds are applicable to the aldol reaction. The protocol is a complete one-pot reaction that uses the bench-stable and nonhygroscopic 2,2-difluoro-3-oxopropanoate to generate the difluoroenolate. This strategy has been applied for the synthesis of CF2-containing bioactive GABAB agonists, contributing to drug design.
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Affiliation(s)
- Atsushi Tarui
- Faculty of Pharmaceutical
Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan
| | - Hiroshi Shimomura
- Faculty of Pharmaceutical
Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan
| | - Yohei Yasuno
- Faculty of Pharmaceutical
Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan
| | - Yukiko Karuo
- Faculty of Pharmaceutical
Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan
| | - Kazuyuki Sato
- Faculty of Pharmaceutical
Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan
| | - Kentaro Kawai
- Faculty of Pharmaceutical
Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan
| | - Masaaki Omote
- Faculty of Pharmaceutical
Sciences, Setsunan University, 45-1 Nagaotoge-cho, Hirakata, Osaka 573-0101, Japan
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2
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Xie X, Dong S, Hong K, Huang J, Xu X. Catalytic Asymmetric Difluoroalkylation Using In Situ Generated Difluoroenol Species as the Privileged Synthon. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2024; 11:e2307520. [PMID: 38318687 PMCID: PMC11005710 DOI: 10.1002/advs.202307520] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/10/2023] [Revised: 11/29/2023] [Indexed: 02/07/2024]
Abstract
A robust and practical difluoroalkylation synthon, α,α-difluoroenol species, which generated in situ from trifluoromethyl diazo compounds and water in the presence of dirhodium complex, is disclosed. As compared to the presynthesized difluoroenoxysilane and in situ formed difluoroenolate under basic conditions, this difluoroenol intermediate displayed versatile reactivity, resulting in dramatically improved enantioselectivity under mild conditions. As demonstrated in catalytic asymmetric aldol reaction and Mannich reactions with ketones or imines in the presence of chiral organocatalysts, quinine-derived urea, and chiral phosphoric acid (CPA), respectively, this relay catalysis strategy provides an effective platform for applying asymmetric fluorination chemistry. Moreover, this method features a novel 1,2-difunctionalization process via installation of a carbonyl motif and an alkyl group on two vicinal carbons, which is a complementary protocol to the metal carbene gem-difunctionalization reaction.
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Affiliation(s)
- Xiongda Xie
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Shanliang Dong
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Kemiao Hong
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Jingjing Huang
- School of Chemistry, Sun Yat-Sen University, Guangzhou, Guangdong, 510275, P. R. China
| | - Xinfang Xu
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
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3
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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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4
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Tan K, He J, Mu Z, Ammar IM, Che C, Geng J, Xing Q. Visible-Light-Promoted C(sp 3)-C(sp 3) Cross-Coupling of Amino Acids and Aryl Trifluoromethyl Ketones Through Simultaneous Decarboxylation and Defluorination. Org Lett 2023. [PMID: 37991739 DOI: 10.1021/acs.orglett.3c03675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2023]
Abstract
A photoredox-catalyzed approach for the difluoroalkylation of amino acids was achieved through simultaneous decarboxylation and defluorination processes. This innovative protocol employs commonly available amino acids and trifluoroacetophenones as the primary starting materials, eliminating the necessity for preactivation. This strategy has enabled the synthesis of several difluoroketone functionalized amines in moderate to impressive yields. These synthesized compounds are presented as foundational molecules for subsequent modification. The underlying mechanism for the transformation is anchored in a single electron transfer (SET) radical pathway.
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Affiliation(s)
- Kui Tan
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518059, China
- Southern University of Science and Technology, Shenzhen 518055, China
| | - Jiaan He
- PolyAdvant, Shenzhen, 518000, China
| | | | - Ibrahim M Ammar
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518059, China
| | - Chao Che
- State Key Laboratory of Chemical Oncogenomics and Key Laboratory of Chemical Genomics, Peking University Shenzhen Graduate School, Shenzhen 518055China
| | - Jin Geng
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518059, China
| | - Qi Xing
- Shenzhen Institute of Advanced Technology, Chinese Academy of Sciences, Shenzhen 518059, China
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5
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Yoshida S. C-F Transformations of Benzotrifluorides by the Activation of Ortho-Hydrosilyl Group. CHEM REC 2023; 23:e202200308. [PMID: 36762730 DOI: 10.1002/tcr.202200308] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/28/2022] [Revised: 01/23/2023] [Indexed: 02/11/2023]
Abstract
Single C-F transformations of aromatic trifluoromethyl compounds are challenging issues due to the strong C-F bond. We have recently developed selective methods for single C-F transformations such as allylation of o-hydrosilyl-substituted benzotrifluorides through the hydride abstraction with trityl cations. Single C-F thiolation and azidation of o-(hydrosilyl)benzotrifluorides were achieved using trityl sulfides and trityl azide catalyzed by Yb(OTf)3 . Treatment of o-(hydrosilyl)benzotrifluorides with trityl chloride resulted in single C-F chlorination. The resulting fluorosilyl group served in further transformations including protonation, halogenation, and Hiyama cross-coupling with C-Si cleavage. We also synthesized benzyl fluorides by LiAlH4 -reduction of the resulting fluorosilanes and further C-F transformations. These methods enabled us to prepare a broad range of organofluorines from simple benzotrifluorides through C-F and C-Si transformations.
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Affiliation(s)
- Suguru Yoshida
- Department of Biological Science and Technology, Faculty of Advanced Engineering, Tokyo University of Science, 6-3-1 Niijuku, Katsushika-ku, Tokyo, 125-8585, Japan
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6
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Sun LW, Hu YF, Ji WJ, Zhang PY, Ma M, Shen ZL, Chu XQ. Selective and Controllable Defluorophosphination and Defluorophosphorylation of Trifluoromethylated Enones: An Auxiliary Function of the Carbonyl Group. Org Lett 2023; 25:3745-3749. [PMID: 37167193 DOI: 10.1021/acs.orglett.3c01215] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
The auxiliary function of a carbonyl group in the tunable defluorophosphination and defluorophosphorylation of trifluoromethylated enones with P(O)-containing compounds was demonstrated. Controlled replacement of one or two fluorine atoms in trifluoromethylated enones while maintaining high chemo- and stereoselectivity was achieved under mild conditions, thus enabling diversity-oriented synthesis of skeletally diverse organophosphorus libraries─(Z)-difluoro-1,3-dien-1-yl phosphinates, (1Z,3E)-4-phosphoryl-4-fluoro-buta-1,3-dien-1-yl phosphinates, and (E)-4-phosphoryl-4-fluoro-1,3-but-3-en-1-ones─in good yields with excellent functional group tolerance.
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Affiliation(s)
- Li-Wen Sun
- Technical Institute of Fluorochemistry, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Ya-Fei Hu
- Technical Institute of Fluorochemistry, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Wen-Jun Ji
- Technical Institute of Fluorochemistry, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Peng-Yuan Zhang
- Technical Institute of Fluorochemistry, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Mengtao Ma
- Department of Chemistry and Materials Science, College of Science, Nanjing Forestry University, Nanjing 210037, China
| | - Zhi-Liang Shen
- Technical Institute of Fluorochemistry, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
| | - Xue-Qiang Chu
- Technical Institute of Fluorochemistry, Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Nanjing Tech University, Nanjing 211816, China
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7
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Messara A, Panossian A, Mikami K, Hanquet G, Leroux FR. Direct Deprotonative Functionalization of α,α-Difluoromethyl Ketones using a Catalytic Organosuperbase. Angew Chem Int Ed Engl 2023; 62:e202215899. [PMID: 36602033 DOI: 10.1002/anie.202215899] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2022] [Revised: 01/04/2023] [Accepted: 01/05/2023] [Indexed: 01/06/2023]
Abstract
The deprotonative functionalization of α,α-difluoromethyl ketones is described herein. Using a catalytic organosuperbase and a silane additive, the corresponding difluoroenolate could be generated and trapped with aldehydes to deliver various α,α-difluoro-β-hydroxy ketones in high yields. This new strategy tolerates numerous functional groups and represents the access to the difluoroenolate by direct deprotonation of the difluoromethyl unit. The diastereoselective version of the reaction was also investigated with d.r. up to 93 : 7. Several transformations were performed to demonstrate the synthetic potential of these α,α-difluoro-β-hydroxy ketones. In addition, this method has been extended to the use of other electrophiles such as imines and chalcogen derivatives, and a difluoromethyl sulfoxide as nucleophile, thus leading to a diversity of difluoromethylene compounds.
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Affiliation(s)
- Amélia Messara
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
| | - Armen Panossian
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
| | - Koichi Mikami
- Department of Chemical Science and Engineering, School of Materials and Chemical Technology, Tokyo Institute of Technology, O-okayama, Meguro-ku, 152-8552, Tokyo, Japan
| | - Gilles Hanquet
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
| | - Frédéric R Leroux
- Laboratoire d'Innovation Moléculaire et Applications (UMR 7042), Université de Strasbourg, Université de Haute-Alsace, CNRS, 67000, Strasbourg, France
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8
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Ghosh S, Qu ZW, Roy S, Grimme S, Chatterjee I. Photoredox Catalyzed Single C-F Bond Activation of Trifluoromethyl Ketones: A Solvent Controlled Divergent Access of gem-Difluoromethylene Containing Scaffolds. Chemistry 2023; 29:e202203428. [PMID: 36445786 DOI: 10.1002/chem.202203428] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/04/2022] [Revised: 11/28/2022] [Accepted: 11/29/2022] [Indexed: 11/30/2022]
Abstract
Selective defluorinative functionalization of trifluoromethyl ketones is a long-standing challenge owing to the exhaustive mode of the process. To meet the demands for the installation of the gem-difluoromethylene unit for the construction of the molecular architectures of well-known pharmaceuticals and agrochemicals, a distinct pathway is thereby highly desirable. Here, a protocol is introduced that allows the divergent synthesis of gem-difluoromethylene group containing tetrahydrofuran derivatives and linear ketones via single C-F bond activation of trifluoromethyl ketones using visible-light photoredox catalysis in the presence of suitable olefins as trapping partner. The choice of appropriate solvent and catalyst plays a significant role in controlling the divergent behavior of this protocol. Highly reducing photo-excited catalysts are found to be responsible for the generation of α,α-difluoromethyl ketone (DFMK) radicals as the key intermediate via a SET process. This protocol also results in a high diastereoselectivity towards the formation of partially fluorinated cyclic ketal derivatives with simultaneous construction of one C-C and two C-O bonds. State-of-the-art DFT calculations are performed to address the origin of diastereoselectivity as well as the divergence of this protocol.
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Affiliation(s)
- Soumen Ghosh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry, Clausius Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Sourav Roy
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Clausius Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Indranil Chatterjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
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9
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Pang B, Wang Y, Hao L, Wu G, Ma Z, Ji Y. Tandem C-C/C-N Bond Formation via Rh(III)-Catalyzed α-Fluoroalkenylation and Sequential Annulation of 2-Arylquinazolinones and gem-Difluorostyrenes. J Org Chem 2023; 88:143-153. [PMID: 36563294 DOI: 10.1021/acs.joc.2c02006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient method of Rh(III)-catalyzed coupling reaction between 2-arylquinazolinones and gem-difluorostyrenes has been developed. In this work, two diverse structures of monofluoroalkenes and isoindolo[1,2-b]quinazolin-10(12H)-one derivatives were respectively synthesized by controlling the amount of additives (Ca(OH)2 and AgNTf2) to achieve controlled stepwise breaking of the C-F bonds of gem-difluorostyrenes. This reaction has the characteristics of a wide range of substrates and good functional group tolerance. Meanwhile, several control experiments were conducted and a plausible mechanism was proposed.
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Affiliation(s)
- Binghan Pang
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Yangyang Wang
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Liqiang Hao
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Gaorong Wu
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Zhihong Ma
- Biotalk Co., LTD, Shanghai 200092, China
| | - Yafei Ji
- Engineering Research Centre of Pharmaceutical Process Chemistry, Ministry of Education, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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10
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Zhang X, Friedrich A, Marder TB. Copper-Catalyzed Borylation of Acyl Chlorides with an Alkoxy Diboron Reagent: A Facile Route to Acylboron Compounds. Chemistry 2022; 28:e202201329. [PMID: 35510606 PMCID: PMC9400893 DOI: 10.1002/chem.202201329] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/29/2022] [Indexed: 12/15/2022]
Abstract
Herein, the copper-catalyzed borylation of readily available acyl chlorides with bis(pinacolato)diboron, (B2 pin2 ) or bis(neopentane glycolato)diboron (B2 neop2 ) is reported, which provides stable potassium acyltrifluoroborates (KATs) in good yields from the acylboronate esters. A variety of functional groups are tolerated under the mild reaction conditions (room temperature) and substrates containing different carbon-skeletons, such as aryl, heteroaryl and primary, secondary, tertiary alkyl are applicable. Acyl N-methyliminodiacetic acid (MIDA) boronates can also been accessed by modification of the workup procedures. This process is scalable and also amenable to the late-stage conversion of carboxylic acid-containing drugs into their acylboron analogues, which have been challenging to prepare previously. A catalytic mechanism is proposed based on in situ monitoring of the reaction between p-toluoyl chloride and an NHC-copper(I) boryl complex as well as the isolation of an unusual lithium acylBpinOBpin compound as a key intermediate.
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Affiliation(s)
- Xiaolei Zhang
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Alexandra Friedrich
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
| | - Todd B. Marder
- Institut für Anorganische Chemie and Institute for Sustainable Chemistry & Catalysis with BoronJulius-Maximilians-Universität WürzburgAm Hubland97074WürzburgGermany
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11
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Li L, Zhang X, Ning Y, Zhang X, Liu B, Zhang Z, Sivaguru P, Zanoni G, Li S, Anderson EA, Bi X. Carbodefluorination of fluoroalkyl ketones via a carbene-initiated rearrangement strategy. Nat Commun 2022; 13:4280. [PMID: 35879307 PMCID: PMC9314321 DOI: 10.1038/s41467-022-31976-z] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2022] [Accepted: 07/12/2022] [Indexed: 11/09/2022] Open
Abstract
The C-F bond cleavage and C-C bond formation (i.e., carbodefluorination) of readily accessible (per)fluoroalkyl groups constitutes an atom-economical and efficient route to partially fluorinated compounds. However, the selective mono-carbodefluorination of trifluoromethyl (CF3) groups remains a challenge, due to the notorious inertness of C-F bond and the risk of over-defluorination arising from C-F bond strength decrease as the defluorination proceeds. Herein, we report a carbene-initiated rearrangement strategy for the carbodefluorination of fluoroalkyl ketones with β,γ-unsaturated alcohols to provide skeletally and functionally diverse α-mono- and α,α-difluoro-γ,δ-unsaturated ketones. The reaction starts with the formation of silver carbenes from fluoroalkyl N-triftosylhydrazones, followed by nucleophilic attack of a β,γ-unsaturated alcohol to form key silver-coordinated oxonium ylide intermediates, which triggers selective C-F bond cleavage by HF elimination and C-C bond formation through Claisen rearrangement of in situ generated difluorovinyl ether. The origin of chemoselectivity and the reaction mechanism are determined by experimental and DFT calculations. Collectively, this strategy by an intramolecular cascade process offers significant advances over existing stepwise strategies in terms of selectivity, efficiency, functional group tolerance, etc.
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Affiliation(s)
- Linxuan Li
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Xinyu Zhang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Yongquan Ning
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Xiaolong Zhang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Binbin Liu
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Zhansong Zhang
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | | | - Giuseppe Zanoni
- Department of Chemistry, University of Pavia, Viale Taramelli 12, 27100, Pavia, Italy
| | - Shuang Li
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China
| | - Edward A Anderson
- Chemistry Research Laboratory, University of Oxford, 12 Mansfield Road, Oxford, OX1 3TA, UK
| | - Xihe Bi
- Department of Chemistry, Northeast Normal University, Changchun, 130024, China.
- State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, China.
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12
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Fu Y, Shi H, Lei S, Shi L, Li H. Cu catalyzed [4 + 2] cycloaddition for the synthesis of highly substituted 3-fluoropyridines. Org Biomol Chem 2022; 20:3731-3736. [PMID: 35467681 DOI: 10.1039/d2ob00133k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A copper catalyzed annulation-aromatization of benzyl trifluoromethyl ketimines with 3-acryloyloxazolidin-2-ones for the synthesis of 3-fluoropyridines through double C-F bond cleavages has been developed. In this approach, the annulation occurred between the in situ formed dienes from trifluoromethyl ketimines via the first C-F bond cleavage and 3-acryloyloxazolidin-2-ones. Then the aromatization afforded 3-fluoropyridines in moderate yields through the second C-F bond cleavage. The 3-fluoropyridine products could be further hydrolyzed to multi-substituted 3-pyridinecarboxylic acids.
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Affiliation(s)
- Yiwei Fu
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Haoyu Shi
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Shengshu Lei
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
| | - Lei Shi
- Huabao Flavours & Fragrances Co., Ltd., 1299 Yecheng Road, Shanghai 201822, China
| | - Hao Li
- State Key Laboratory of Bioreactor Engineering, Shanghai Key Laboratory of New Drug Design, and School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China.
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13
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Ghosh S, Qu Z, Pradhan S, Ghosh A, Grimme S, Chatterjee I. HFIP‐Assisted Single C−F Bond Activation of Trifluoromethyl Ketones using Visible‐Light Photoredox Catalysis. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202115272] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Soumen Ghosh
- Department of Chemistry Indian Institute of Technology Ropar Nangal Road Rupnagar Punjab 140001 India
| | - Zheng‐Wang Qu
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Rheinische Friedrich-Wilhelms-Universität Bonn Beringstrasse 4 53115 Bonn Germany
| | - Suman Pradhan
- Department of Chemistry Indian Institute of Technology Ropar Nangal Road Rupnagar Punjab 140001 India
| | - Avisek Ghosh
- Department of Chemistry Indian Institute of Technology Ropar Nangal Road Rupnagar Punjab 140001 India
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry Institut für Physikalische und Theoretische Chemie Rheinische Friedrich-Wilhelms-Universität Bonn Beringstrasse 4 53115 Bonn Germany
| | - Indranil Chatterjee
- Department of Chemistry Indian Institute of Technology Ropar Nangal Road Rupnagar Punjab 140001 India
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14
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Yang J, Liu S, Hong P, Li J, Wang Z, Ren J. Synthesis of 2,2-Difluoro-3-hydroxy-1,4-diketones via an HFIP-Catalyzed Mukaiyama Aldol Reaction of Glyoxal Monohydrates with Difluoroenoxysilanes. J Org Chem 2022; 87:1144-1153. [PMID: 34994195 DOI: 10.1021/acs.joc.1c02504] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A novel efficient HFIP-catalyzed synthesis of structurally diverse 2,2-difluoro-3-hydroxy-1,4-diketone derivatives from readily available glyoxal monohydrates and difluoroenoxysilanes is described. This convenient protocol is induced by the distinctive fluorine effect of the reactants and the fluoroalcohol catalyst, which represents the first application of fluoroalcohol catalysis in a Mukaiyama aldol reaction.
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Affiliation(s)
- Jianguo Yang
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Hubei University, Wuhan 430062, P.R. China.,Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P.R. China
| | - Saimei Liu
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Hubei University, Wuhan 430062, P.R. China
| | - Peng Hong
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P.R. China
| | - Jinshan Li
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P.R. China
| | - Zhiming Wang
- Advanced Research Institute and Department of Chemistry, Taizhou University, 1139 Shifu Avenue, Taizhou 318000, P.R. China
| | - Jun Ren
- Collaborative Innovation Center for Advanced Organic Chemical Materials Co-Constructed by the Province and Ministry, Hubei University, Wuhan 430062, P.R. China
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15
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Yan G, Gong X, Zhou Q. Recent advances in C-F bond activation of trifluoromethylated carbonyl compounds and derivatives. Org Biomol Chem 2022; 20:5365-5376. [DOI: 10.1039/d2ob00795a] [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 selective activation of the inert C-F bonds is one of the most challenging topics in modern organic chemistry. Trifluoromethylketones represent a class of versatile building blocks, which are inexpensive...
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16
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Ghosh S, Qu ZW, Pradhan S, Ghosh A, Grimme S, Chatterjee I. HFIP-Assisted Single C-F Bond Activation of Trifluoromethyl Ketones using Visible-Light Photoredox Catalysis. Angew Chem Int Ed Engl 2021; 61:e202115272. [PMID: 34821454 DOI: 10.1002/anie.202115272] [Citation(s) in RCA: 32] [Impact Index Per Article: 10.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/10/2021] [Indexed: 11/07/2022]
Abstract
A visible light photoredox catalytic method for the selective cleavage of single strong C-F bond in trifluoromethyl ketones is reported. Single electron reduction of trifluoromethyl ketones generates difluoromethyl radicals which can be engaged in intermolecular C-C bond formation with N-methyl-N-arylmethacrylamides to furnish fluorine-containing oxindole derivatives in good yields. The reaction shows excellent chemoselectivity with good functional group tolerance under mild conditions. 1,1,1,3,3,3-Hexafluoroisopropanol (HFIP) as a solvent plays a critical role for the selective single C-F bond cleavage. High-level DFT calculations are depicted to shed light on the mechanism.
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Affiliation(s)
- Soumen Ghosh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Zheng-Wang Qu
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Suman Pradhan
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Avisek Ghosh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
| | - Stefan Grimme
- Mulliken Center for Theoretical Chemistry, Institut für Physikalische und Theoretische Chemie, Rheinische Friedrich-Wilhelms-Universität Bonn, Beringstrasse 4, 53115, Bonn, Germany
| | - Indranil Chatterjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab, 140001, India
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17
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Luo S, Peng M, Querard P, Li CC, Li CJ. Copper-Catalyzed Conjugate Addition of Carbonyls as Carbanion Equivalent via Hydrazones. J Org Chem 2021; 86:13111-13117. [PMID: 34478300 DOI: 10.1021/acs.joc.1c01380] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Copper-catalyzed conjugate addition is a classic method for forming new carbon-carbon bonds. However, copper has never showed catalytic activity for umpolung carbanions in hydrazone chemistry. Herein, we report a facile conjugate addition of hydrazone catalyzed by readily available copper complexes at room temperature. The employment of mesitylcopper(I) and electron-rich phosphine bidentate ligand is a key factor affecting reactivity. The reaction allows various aromatic hydrazones to react with diverse conjugated compounds to produce 1,4-adducts in yields of about 20 to 99%.
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Affiliation(s)
- Siyi Luo
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrook Street West, Montreal, Quebec H3A 0B8, Canada
| | - Marie Peng
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrook Street West, Montreal, Quebec H3A 0B8, Canada
| | - Pierre Querard
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrook Street West, Montreal, Quebec H3A 0B8, Canada
| | - Chen-Chen Li
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrook Street West, Montreal, Quebec H3A 0B8, Canada
| | - Chao-Jun Li
- Department of Chemistry and FRQNT Centre for Green Chemistry and Catalysis, McGill University, 801 Sherbrook Street West, Montreal, Quebec H3A 0B8, Canada
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18
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Zhu C, Sun M, Chen K, Liu H, Feng C. Selective C–F Bond Allylation of Trifluoromethylalkenes. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202106531] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Chuan Zhu
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis (IAS) School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Meng‐Meng Sun
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis (IAS) School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Kai Chen
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis (IAS) School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Haidong Liu
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis (IAS) School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF) Institute of Advanced Synthesis (IAS) School of Chemistry and Molecular Engineering Nanjing Tech University 30 South Puzhu Road Nanjing 211816 P. R. China
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19
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Zhu C, Sun MM, Chen K, Liu H, Feng C. Selective C-F Bond Allylation of Trifluoromethylalkenes. Angew Chem Int Ed Engl 2021; 60:20237-20242. [PMID: 34191389 DOI: 10.1002/anie.202106531] [Citation(s) in RCA: 41] [Impact Index Per Article: 13.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/15/2021] [Revised: 06/18/2021] [Indexed: 01/10/2023]
Abstract
Selective C-F bond functionalization of CF3 group represents an appealing strategy for the incorporation of pharmaceutically privileged difluoromethylene moiety. Despite the recent significant advancement attained in the functionalization of Ar-CF3 molecules, prescriptions amenable for alkenyl-CF3 congeners remain sufficiently inadequate. Herein, we report a strategically novel protocol for the C-F bond elaboration of trifluoromethylalkene derivatives. By using readily available allyl metallics as nucleophilic coupling partner, the present reaction enables an expedient construction of structurally diversified CF2 -bridged 1,5-dienes. Furthermore, the exquisite selectivity observed in this transformation is revealed to be based on the underlying mechanism that consists of a cascade of nucleophilic SN 2' defluorinative allylation and electronically promoted Cope rearrangement.
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Affiliation(s)
- Chuan Zhu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Meng-Meng Sun
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Kai Chen
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Haidong Liu
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
| | - Chao Feng
- Technical Institute of Fluorochemistry (TIF), Institute of Advanced Synthesis (IAS), School of Chemistry and Molecular Engineering, Nanjing Tech University, 30 South Puzhu Road, Nanjing, 211816, P. R. China
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20
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Su J, Hu X, Huang H, Guo Y, Song Q. Difluorocarbene enables to access 2-fluoroindoles from ortho-vinylanilines. Nat Commun 2021; 12:4986. [PMID: 34404806 PMCID: PMC8371155 DOI: 10.1038/s41467-021-25313-z] [Citation(s) in RCA: 25] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2021] [Accepted: 07/22/2021] [Indexed: 02/07/2023] Open
Abstract
2-Fluoroindoles as an important structural scaffold are widely existing in many bioactive or therapeutic agents. Despite their potential usefulness, efficient constructions of 2-fluoroindole derivatives are very sparce. The development of straightforward synthetic approaches to access 2-fluoroindoles is highly desirable for studying their fundamental properties and applications. Herein, we report an efficient and general strategy for the construction of 2-fluoroindoles in which a wide variety of 2-fluoroindoles were accessed with high efficiency and chemoselectivity. Instead of starting from indole skeletons, our strategy constructs indole scaffolds alongside the incorporation of fluorine atom on C2 position in a formal [4+1] cyclization from readily accessible ortho-vinylanilines and difluorocarbene. In our protocol, commercially accessible halodifluoroalkylative reagents provide one carbon and one fluorine atom by cleaving one C-N tertiary bond and forming one C-N bond and one C-C double bond with ortho-vinylanilines. Downstream transformations on 2-fluoroindoles lead to various valuable bioactive molecules which demonstrated significant synthetic advantages over previous reports. And mechanistic studies suggest that the reaction undergoes a cascade difluorocarbene-trapping and intramolecular Michael addition reaction followed by Csp3-F bond cleavage.
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Affiliation(s)
- Jianke Su
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China
| | - Xinyuan Hu
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China
| | - Hua Huang
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China
| | - Yu Guo
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China
| | - Qiuling Song
- grid.411404.40000 0000 8895 903XInstitute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian China ,grid.411604.60000 0001 0130 6528Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian China
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21
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An X, Feng Z, Huang L, Yang Y, Liu Z. Recent Advances in the Single C—F Bond Cleavage Reactions of Trifluoromethylarenes. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202110037] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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22
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Fu Y, Qin C, Zhang Z, Shi H, Zhao J, Gong X, Shi L, Li H. [4 + 2] Cycloaddition of trifluoromethyl ketimines with 2-alkenyl azaarenes through selective C–F bond cleavage of CF 3. Org Chem Front 2021. [DOI: 10.1039/d1qo00639h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A transition-metal-free [4 + 2] cycloaddition of trifluoromethyl ketimines with 2-alkenyl azaarenes through selective C–F bond cleavage of CF3 has been developed to afford cis-tetrahydroxypyridine products in moderate yields under mild conditions.
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Affiliation(s)
- Yiwei Fu
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Cong Qin
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Zhiqiang Zhang
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- Centre for Computational Chemistry and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
| | - Haoyu Shi
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Jianbo Zhao
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
| | - Xueqing Gong
- Key Laboratory for Advanced Materials and Joint International Research Laboratory for Precision Chemistry and Molecular Engineering
- Feringa Nobel Prize Scientist Joint Research Center
- Centre for Computational Chemistry and Research Institute of Industrial Catalysis
- School of Chemistry and Molecular Engineering
- East China University of Science and Technology
| | - Lei Shi
- Huabao Flavours & Fragrances Co
- Ltd
- Shanghai 201822
- China
| | - Hao Li
- State Key Laboratory of Bioreactor Engineering
- Shanghai Key Laboratory of New Drug Design
- and School of Pharmacy
- East China University of Science and Technology
- Shanghai 200237
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23
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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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24
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Ma X, Song Q. Recent progress on selective deconstructive modes of halodifluoromethyl and trifluoromethyl-containing reagents. Chem Soc Rev 2020; 49:9197-9219. [PMID: 33146196 DOI: 10.1039/d0cs00604a] [Citation(s) in RCA: 119] [Impact Index Per Article: 29.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Halodifluoromethyl and trifluoromethyl-containing compounds are widely employed in organic chemistry, pharmaceuticals and materials science. Therefore, their applications and transformations have received significant attention during the past few decades. The single, double, triple and quadruple cleavage of halodifluoromethyl compounds and various deconstructive modes of trifluoromethyl-containing compounds could generate a variety of synthons to prepare more valuable products. Herein, we summarize the most significant achievements in this field with an intriguing focus on results from the last decade.
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Affiliation(s)
- Xingxing Ma
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University Fuzhou, Fujian, 350108, China
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25
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Zhang Y, Ge J, Luo L, Yan SQ, Lai GW, Mei ZQ, Luo HQ, Fan XL. Difluoroisoxazolacetophenone: A Difluoroalkylation Reagent for Organocatalytic Vinylogous Nitroaldol Reactions of 1,2-Diketones. Org Lett 2020; 22:7952-7957. [PMID: 32991188 DOI: 10.1021/acs.orglett.0c02873] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Difluoroisoxazolacetophenone (DFIO) is developed as a new difluoroalkylation reagent that can be easily prepared from inexpensive starting materials. In situ remote C-C bond cleavage of DFIO affords γ,γ-difluoroisoxazole nitronate that undergoes base-catalyzed vinylogous nitroaldol additions to isatins, benzothiophene-2,3-dione, unsaturated-α-ketoesters, and cyclic 1,2-diketones. This organocatalytic debenzoate vinylogous nitroaldol reaction provides a new and mild approach for the preparation of various difluoroisoxazole-substituted 3-hydroxy-2-oxindoles.
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Affiliation(s)
- Yong Zhang
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Jin Ge
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Liang Luo
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Su-Qiong Yan
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Guo-Wei Lai
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Zu-Qin Mei
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Hai-Qing Luo
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
| | - Xiao-Lin Fan
- Key Laboratory of Organo-pharmaceutical Chemistry, Gannan Normal University, Ganzhou 341000, P.R. China
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26
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Ikeda M, Matsuzawa T, Morita T, Hosoya T, Yoshida S. Synthesis of Diverse Aromatic Ketones through C−F Cleavage of Trifluoromethyl Group. Chemistry 2020; 26:12333-12337. [DOI: 10.1002/chem.202001816] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/15/2020] [Indexed: 12/28/2022]
Affiliation(s)
- Mai Ikeda
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Tsubasa Matsuzawa
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Takamoto Morita
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
| | - Suguru Yoshida
- Laboratory of Chemical Bioscience Institute of Biomaterials and Bioengineering Tokyo Medical and Dental University (TMDU) 2-3-10 Kanda-Surugadai, Chiyoda-ku Tokyo 101-0062 Japan
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27
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Shao N, Rodriguez J, Quintard A. Redox-Neutral 1,3-Diol Synthesis by Base-Promoted Diastereoselective Alcohol–Aldolization. Org Lett 2020; 22:7197-7201. [DOI: 10.1021/acs.orglett.0c02536] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Na Shao
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille 13397, France
| | - Jean Rodriguez
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille 13397, France
| | - Adrien Quintard
- Aix Marseille Univ, CNRS, Centrale Marseille, iSm2, Marseille 13397, France
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28
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Kim Y, Kanemoto K, Shimomori K, Hosoya T, Yoshida S. Functionalization of a Single C-F Bond of Trifluoromethylarenes Assisted by an ortho-Silyl Group Using a Trityl-Based All-in-One Reagent with Ytterbium Triflate Catalyst. Chemistry 2020; 26:6136-6140. [PMID: 32185819 DOI: 10.1002/chem.202001315] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2020] [Indexed: 12/24/2022]
Abstract
Catalytic thiolation and azidation of a single C-F bond of trifluoromethylarenes were achieved assisted by an ortho-silyl group with all-in-one reagents to generate a trityl cation and nucleophiles. The reactions catalyzed by ytterbium triflate efficiently afforded a wide variety of difluoromethylenes avoiding the further C-F bond cleavage, by virtue of the mild conditions without the generation of a Brønsted acid.
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Affiliation(s)
- Youngchan Kim
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Kazuya Kanemoto
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Ken Shimomori
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Takamitsu Hosoya
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
| | - Suguru Yoshida
- Laboratory of Chemical Bioscience, Institute of Biomaterials and Bioengineering, Tokyo Medical and Dental University (TMDU), 2-3-10 Kanda-Surugadai, Chiyoda-ku, Tokyo, 101-0062, Japan
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29
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Huang X, Zhang Y, Liang W, Zhang Q, Zhan Y, Kong L, Peng B. Dearomatization of aryl sulfoxides: a switch between mono- and dual-difluoroalkylation. Chem Sci 2020; 11:3048-3053. [PMID: 34122809 PMCID: PMC8157523 DOI: 10.1039/d0sc00244e] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022] Open
Abstract
Herein we describe the dearomatization of aryl sulfoxides with difluoroenol silyl ether (DFESE) using a rearrangement/addition protocol. The selection of the sulfoxide activator determines whether one or two difluoroalkyl groups are incorporated into dearomatized products. Using TFAA can deliberately halt the reaction at the mono-difluoroalkylated dearomatized intermediate formed via a [3,3]-rearrangement, which can be further trapped by external nucleophiles to give mono-difluoroalkylated alicycles. In contrast, switching to Tf2O enhances the electrophilicity of dearomatized intermediates, thus allowing for the adoption of a second DFESE to produce dual-difluoroalkylated alicycles. Herein we describe the dearomatization of aryl sulfoxides with difluoroenol silyl ether (DFESE) using a rearrangement/addition protocol.![]()
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Affiliation(s)
- Xin Huang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Yage Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Weijian Liang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Qifeng Zhang
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Yaling Zhan
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Lichun Kong
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
| | - Bo Peng
- Key Laboratory of the Ministry of Education for Advanced Catalysis Materials, Zhejiang Normal University China
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30
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New Cu4Na4- and Cu5-Based Phenylsilsesquioxanes. Synthesis via Complexation with 1,10-Phenanthroline, Structures and High Catalytic Activity in Alkane Oxidations with Peroxides in Acetonitrile. Catalysts 2019. [DOI: 10.3390/catal9090701] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
Self-assembly of copper(II)phenylsilsesquioxane assisted by the use of 1,10-phenanthroline (phen) results in isolation of two unusual cage-like compounds: (PhSiO1,5)12(CuO)4(NaO0.5)4(phen)4 1 and (PhSiO1,5)6(PhSiO1,5)7(HO0.5)2(CuO)5(O0.25)2(phen)3 2. X-Ray diffraction study revealed extraordinaire molecular architectures of both products. Namely, complex 1 includes single cyclic (PhSiO1,5)12 silsesquioxane ligand. Four sodium ions of 1 are additionally ligated by 1,10-phenanthrolines. In turn, “sodium-less” complex 2 represents coordination of 1,10-phenanthrolines to copper ions. Two silsesquioxane ligands of 2 are: (i) noncondensed cubane of a rare Si6-type and (ii) unprecedented Si7-based ligand including two HOSiO1.5 fragments. These silanol units were formed due to removal of phenyl groups from silicon atoms, observed in mild conditions. The presence of phenanthroline ligands in products 1 and 2 favored the π–π stacking interactions between neighboring cages. Noticeable that in the case of 1 all four phenanthrolines participated in such supramolecular organization, unlike to complex 2 where one of the three phenanthrolines is not “supramolecularly active”. Complexes 1 and 2 were found to be very efficient precatalysts in oxidations with hydroperoxides. A new method for the determination of the participation of hydroxyl radicals has been developed.
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31
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Tang L, Liu ZY, She W, Feng C. Selective single C-F bond arylation of trifluoromethylalkene derivatives. Chem Sci 2019; 10:8701-8705. [PMID: 31803445 PMCID: PMC6849639 DOI: 10.1039/c9sc01966a] [Citation(s) in RCA: 57] [Impact Index Per Article: 11.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2019] [Accepted: 08/04/2019] [Indexed: 12/24/2022] Open
Abstract
Through an SN2′ amination, N-alkylation and palladium-catalyzed allylic substitution sequence, we realized ipso-C–F bond arylation/alkenylation of trifluoromethylalkene derivatives.
A strategically novel single C–F bond functionalization of CF3-derived molecules, which shows a prominent advantage for the expedient construction of difluoromethylene-bridged organic scaffolds, is disclosed. The reported protocol consists of SN2′ amination, N-alkylation and palladium-catalyzed allylic substitution reactions, which enables straightforward arylation and alkenylation of vinyltrifluoromethane derivatives. Furthermore, this strategy is characterized by its broad substrate scope with respect to both CF3-alkene and arylboronic acid derivatives.
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Affiliation(s)
- Luning Tang
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , P. R. China .
| | - Ze-Yao Liu
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , P. R. China .
| | - Wenzhi She
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , P. R. China .
| | - Chao Feng
- Institute of Advanced Synthesis , School of Chemistry and Molecular Engineering , Nanjing Tech University , Nanjing 211816 , P. R. China .
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32
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Hisano N, Kimura D, Mori K. Synthesis of Seven-membered Ring Containing Difluoromethylene Unit by Sc(OTf)3-catalyzed Activation of Single C–F Bond in CF3 Group. CHEM LETT 2019. [DOI: 10.1246/cl.190280] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Naoya Hisano
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Daiki Kimura
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
| | - Keiji Mori
- Department of Applied Chemistry, Graduate School of Engineering, Tokyo University of Agriculture and Technology, 2-24-16 Nakacho, Koganei, Tokyo 184-8588, Japan
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33
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Danopoulos AA, Simler T, Braunstein P. N-Heterocyclic Carbene Complexes of Copper, Nickel, and Cobalt. Chem Rev 2019; 119:3730-3961. [PMID: 30843688 DOI: 10.1021/acs.chemrev.8b00505] [Citation(s) in RCA: 269] [Impact Index Per Article: 53.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The emergence of N-heterocyclic carbenes as ligands across the Periodic Table had an impact on various aspects of the coordination, organometallic, and catalytic chemistry of the 3d metals, including Cu, Ni, and Co, both from the fundamental viewpoint but also in applications, including catalysis, photophysics, bioorganometallic chemistry, materials, etc. In this review, the emergence, development, and state of the art in these three areas are described in detail.
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Affiliation(s)
- Andreas A Danopoulos
- Laboratory of Inorganic Chemistry , National and Kapodistrian University of Athens , Panepistimiopolis Zografou , Athens GR 15771 , Greece.,Université de Strasbourg, CNRS, Institut de Chimie UMR 7177 , Laboratoire de Chimie de Coordination , Strasbourg 67081 Cedex , France
| | - Thomas Simler
- Université de Strasbourg, CNRS, Institut de Chimie UMR 7177 , Laboratoire de Chimie de Coordination , Strasbourg 67081 Cedex , France
| | - Pierre Braunstein
- Université de Strasbourg, CNRS, Institut de Chimie UMR 7177 , Laboratoire de Chimie de Coordination , Strasbourg 67081 Cedex , France
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34
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Fuchibe K, Oki R, Hatta H, Ichikawa J. Single C−F Bond Activation of the CF
3
Group with a Lewis Acid: CF
3
‐Cyclopropanes as Versatile 4,4‐Difluorohomoallylating Agents. Chemistry 2018; 24:17932-17935. [DOI: 10.1002/chem.201805054] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2018] [Indexed: 12/26/2022]
Affiliation(s)
- Kohei Fuchibe
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Rie Oki
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Hibiki Hatta
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
| | - Junji Ichikawa
- Division of ChemistryFaculty of Pure and Applied SciencesUniversity of Tsukuba Tsukuba Ibaraki 305-8571 Japan
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35
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Wei F, Shen XQ, Zhang XH, Zhang XG. Copper-Catalyzed Defluorinative Thioannulation of Trifluoropropynes for the Synthesis of 1,2-Dithiole-3-thiones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800846] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Feng Wei
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035, People's Republic of China Tel./Fax: (+86)-577-8668-9615
| | - Xiao-Qin Shen
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035, People's Republic of China Tel./Fax: (+86)-577-8668-9615
| | - Xiao-Hong Zhang
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035, People's Republic of China Tel./Fax: (+86)-577-8668-9615
| | - Xing-Guo Zhang
- College of Chemistry and Materials Engineering; Wenzhou University; Wenzhou 325035, People's Republic of China Tel./Fax: (+86)-577-8668-9615
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36
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Xiong G, Wang BB, He Y, you L, Ren B, Sun Y. Syntheses, structures, and luminescence of a series of novel trimetallic coordination polymers constructed by Cu-I clusters and alkaline-carboxyl- alkaline-earth building units. J SOLID STATE CHEM 2018. [DOI: 10.1016/j.jssc.2018.06.026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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37
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Jaroschik F. Picking One out of Three: Selective Single C-F Activation in Trifluoromethyl Groups. Chemistry 2018; 24:14572-14582. [PMID: 29923644 DOI: 10.1002/chem.201801702] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/06/2018] [Revised: 06/03/2018] [Indexed: 01/01/2023]
Abstract
The introduction of a trifluoromethyl (CF3 ) group into an organic molecule can modify its chemical behavior and lead to changes in its physicochemical and pharmacological properties. The CF3 group is often chosen for its chemical inertness and stability, which are related to the strong C-F bonds. In recent years, the potential of gaining straightforward access to difluorinated compounds through selective single C-F activation in CF3 groups has been unveiled. This review describes the latest methodologies for the synthesis of difluoromethylated arenes, difluoroalkenes and difluorinated aldol products of potential synthetic and/or biological interest, employing low-valent metals, transition metal catalysis, FLP and Lewis acid mediated transformations as well as photoredox catalysis.
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Affiliation(s)
- Florian Jaroschik
- Institut Charles Gerhardt Montpellier UMR 5253, Ecole Nationale Supérieure de Chimie de Montpellier, 240 avenue du Prof Jeanbrau, 34080, Montpellier, France
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38
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Rasson C, Stouse A, Boreux A, Cirriez V, Riant O. Copper-Catalyzed One-Pot Borylative Aldolisation β-Fluoride Elimination for the Formal Addition of Acrylates to Carbonyl Moieties. Chemistry 2018; 24:9234-9237. [PMID: 29694692 DOI: 10.1002/chem.201802023] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2018] [Indexed: 01/07/2023]
Abstract
Herein, we report the copper-catalyzed domino borylation/aldolisation of methyl 2-fluoroacrylate with carbonyl compounds followed by an elimination to give Morita-Baylis-Hillman (MBH) analogues. The optimal conditions described were shown to be compatible with a wide range of aldehydes and ketones. Unprecedented MBH adducts derived from ketones were efficiently synthesized.
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Affiliation(s)
- Corentin Rasson
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), Université catholique de Louvain, Place Louis Pasteur 1, bte L4.01.02, 1348, Louvain-la-Neuve, Belgium
| | - Adrien Stouse
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), Université catholique de Louvain, Place Louis Pasteur 1, bte L4.01.02, 1348, Louvain-la-Neuve, Belgium
| | - Arnaud Boreux
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), Université catholique de Louvain, Place Louis Pasteur 1, bte L4.01.02, 1348, Louvain-la-Neuve, Belgium
| | - Virginie Cirriez
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), Université catholique de Louvain, Place Louis Pasteur 1, bte L4.01.02, 1348, Louvain-la-Neuve, Belgium
| | - Olivier Riant
- Institute of Condensed Matter and Nanosciences, Molecules, Solids and Reactivity (IMCN/MOST), Université catholique de Louvain, Place Louis Pasteur 1, bte L4.01.02, 1348, Louvain-la-Neuve, Belgium
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39
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Ricucci A, Rodriguez J, Quintard A. Organo- and Copper-Multi-Catalyzed Pseudo Four-Component Access to gem
-Difluorohydrins. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701459] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Angela Ricucci
- CNRS, Centrale Marseille, iSm2; Aix Marseille Université; 13397 Marseille France
| | - Jean Rodriguez
- CNRS, Centrale Marseille, iSm2; Aix Marseille Université; 13397 Marseille France
| | - Adrien Quintard
- CNRS, Centrale Marseille, iSm2; Aix Marseille Université; 13397 Marseille France
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40
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Tan DH, Lin E, Ji WW, Zeng YF, Fan WX, Li Q, Gao H, Wang H. Copper-Catalyzed Stereoselective Defluorinative Borylation and Silylation of gem
-Difluoroalkenes. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701497] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dong-Hang Tan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - E Lin
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Wei-Wei Ji
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Yao-Fu Zeng
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Wen-Xin Fan
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Qingjiang Li
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Hui Gao
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
| | - Honggen Wang
- School of Pharmaceutical Sciences; Sun Yat-sen University; Guangzhou 510006 People's Republic of China
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41
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Tarui A, Oduti M, Shinya S, Sato K, Omote M. Decarboxylative aldol reaction of α,α-difluoro-β-ketocarboxylate salt: a facile method for generation of difluoroenolate. RSC Adv 2018; 8:20568-20575. [PMID: 35542341 PMCID: PMC9080823 DOI: 10.1039/c8ra02440e] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/20/2018] [Accepted: 05/29/2018] [Indexed: 11/21/2022] Open
Abstract
We developed a decarboxylative aldol reaction using α,α-difluoro-β-ketocarboxylate salt, carbonyl compounds, and ZnCl2/N,N,N′,N′-tetramethylethylenediamine. The generation of difluoroenolate proceeded smoothly under mild heating to provide α,α-difluoro-β-hydroxy ketones in good to excellent yield (up to 99%). The α,α-difluoro-β-ketocarboxylate salt was bench stable and easy to handle under air, which realizes a convenient and environmentally friendly methodology for synthesis of difluoromethylene compounds. A ZnCl2/N,N,N′,N′-tetramethylethylenediamine complex promoted decarboxylative aldol reaction of α,α-difluoro-β-ketocarboxylate salt with carbonyl compounds has been developed.![]()
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Affiliation(s)
- Atsushi Tarui
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
| | - Mayuna Oduti
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
| | - Susumu Shinya
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
| | - Kazuyuki Sato
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
| | - Masaaki Omote
- Faculty of Pharmaceutical Sciences
- Setsunan University
- Hirakata
- Japan
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42
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Xu L, Zhang Q, Xie Q, Huang B, Dai JJ, Xu J, Xu HJ. Pd-catalyzed defluorination/arylation of α-trifluoromethyl ketones via consecutive β-F elimination and C–F bond activation. Chem Commun (Camb) 2018; 54:4406-4409. [DOI: 10.1039/c8cc01568f] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pd-catalyzed selective activation of a CF3 group by consecutive β-F elimination and C–F oxidative addition is reported herein.
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Affiliation(s)
- Lei Xu
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
| | - Qi Zhang
- Institute of Industry & Equipment Technology
- Hefei University of Technology Hefei
- P. R. China
| | - Qiang Xie
- PET-CT Center, The First Affiliated Hospital of USTC
- Hefei
- P. R. China
| | - Bei Huang
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
| | - Jian-Jun Dai
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
| | - Jun Xu
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
| | - Hua-Jian Xu
- School of Biology and Medical Engineering
- Key Laboratory of Advanced Functional Materials and Devices of Anhui Province Hefei University of Technology Hefei
- P. R. China
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43
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Kumar T, Massicot F, Harakat D, Chevreux S, Martinez A, Bordolinska K, Preethalayam P, Kokkuvayil Vasu R, Behr JB, Vasse JL, Jaroschik F. Generation of ϵ,ϵ-Difluorinated Metal-Pentadienyl Species through Lanthanide-Mediated C−F Activation. Chemistry 2017; 23:16460-16465. [DOI: 10.1002/chem.201704322] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/14/2017] [Indexed: 11/05/2022]
Affiliation(s)
- Tarun Kumar
- Institut de Chimie Moléculaire de Reims (CNRS UMR 7312); Université de Reims Champagne-Ardenne, BP 1039; 51687 Reims Cedex 2 France
| | - Fabien Massicot
- Institut de Chimie Moléculaire de Reims (CNRS UMR 7312); Université de Reims Champagne-Ardenne, BP 1039; 51687 Reims Cedex 2 France
| | - Dominique Harakat
- Institut de Chimie Moléculaire de Reims (CNRS UMR 7312); Université de Reims Champagne-Ardenne, BP 1039; 51687 Reims Cedex 2 France
| | - Sylviane Chevreux
- Institut de Chimie Moléculaire de Reims (CNRS UMR 7312); Université de Reims Champagne-Ardenne, BP 1039; 51687 Reims Cedex 2 France
| | - Agathe Martinez
- Institut de Chimie Moléculaire de Reims (CNRS UMR 7312); Université de Reims Champagne-Ardenne, BP 1039; 51687 Reims Cedex 2 France
| | - Klaudia Bordolinska
- Institut de Chimie Moléculaire de Reims (CNRS UMR 7312); Université de Reims Champagne-Ardenne, BP 1039; 51687 Reims Cedex 2 France
| | - Preethanuj Preethalayam
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram 695019 India
| | - Radhakrishnan Kokkuvayil Vasu
- Organic Chemistry Section; National Institute for Interdisciplinary Science and Technology (CSIR); Thiruvananthapuram 695019 India
| | - Jean-Bernard Behr
- Institut de Chimie Moléculaire de Reims (CNRS UMR 7312); Université de Reims Champagne-Ardenne, BP 1039; 51687 Reims Cedex 2 France
| | - Jean-Luc Vasse
- Institut de Chimie Moléculaire de Reims (CNRS UMR 7312); Université de Reims Champagne-Ardenne, BP 1039; 51687 Reims Cedex 2 France
| | - Florian Jaroschik
- Institut de Chimie Moléculaire de Reims (CNRS UMR 7312); Université de Reims Champagne-Ardenne, BP 1039; 51687 Reims Cedex 2 France
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44
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Synthesis and Reactivity of Fluoroalkyl Copper Complexes by the Oxycupration of Tetrafluoroethylene. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703923] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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45
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Ohashi M, Adachi T, Ishida N, Kikushima K, Ogoshi S. Synthesis and Reactivity of Fluoroalkyl Copper Complexes by the Oxycupration of Tetrafluoroethylene. Angew Chem Int Ed Engl 2017; 56:11911-11915. [DOI: 10.1002/anie.201703923] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2017] [Revised: 05/25/2017] [Indexed: 11/08/2022]
Affiliation(s)
- Masato Ohashi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Takuya Adachi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Naoyoshi Ishida
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Kotaro Kikushima
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
| | - Sensuke Ogoshi
- Department of Applied Chemistry; Faculty of Engineering; Osaka University; Suita Osaka 565-0871 Japan
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46
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Wang F, Zhang T, Tu HY, Zhang XG. Transition-Metal-Free Conversion of Trifluoropropanamides into Cyanoformamides through C–CF3 Bond Cleavage and Nitrogenation. J Org Chem 2017; 82:5475-5480. [DOI: 10.1021/acs.joc.7b00626] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Fang Wang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Tao Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Hai-Yong Tu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xing-Guo Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
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47
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Wada S, Jordan RF. Olefin Insertion into a Pd-F Bond: Catalyst Reactivation Following β-F Elimination in Ethylene/Vinyl Fluoride Copolymerization. Angew Chem Int Ed Engl 2017; 56:1820-1824. [PMID: 28079950 DOI: 10.1002/anie.201611198] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2016] [Revised: 12/15/2016] [Indexed: 11/06/2022]
Abstract
The discrete (phosphinoarenesulfonate)Pd fluoride complex (POBp,OMe )PdF(lutidine), where POBp,OMe =(2-MeOC6 H4 )(2-{2,6-(MeO)2 C6 H3 }C6 H4 )(2-SO3 -5-MeC6 H3 )P, inserts vinyl fluoride (VF) to form (POBp,OMe )PdCH2 CHF2 (lutidine) and inserts multiple ethylene (E) units to generate polyethylene that contains -CH2 F chain ends. These results provide strong evidence that the -CHF2 and -CH2 F chain ends in E/VF copolymer generated by (phosphinoarenesulfonate)PdR catalysts form by β-F elimination of Pd(β-F-alkyl) species, VF or E insertion of the resulting (PO)PdF species, and subsequent chain growth. These results also imply that β-F elimination is not an important catalyst deactivation reaction in this system.
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Affiliation(s)
- Shinji Wada
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, IL, 60637, USA.,Permanent address: New Product R&D Center, Technology General Division, Asahi Glass Co., LTD., 1150 Hazawa-cho, Kanagawa-ku, yokohama-shi, Kanagawa, 221-8755, Japan
| | - Richard F Jordan
- Department of Chemistry, The University of Chicago, 5735 South Ellis Avenue, Chicago, IL, 60637, USA
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48
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Wada S, Jordan RF. Olefin Insertion into a Pd-F Bond: Catalyst Reactivation Following β-F Elimination in Ethylene/Vinyl Fluoride Copolymerization. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611198] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Shinji Wada
- Department of Chemistry; The University of Chicago; 5735 South Ellis Avenue Chicago IL 60637 USA
- Permanent address: New Product R&D Center; Technology General Division; Asahi Glass Co., LTD.; 1150 Hazawa-cho, Kanagawa-ku, yokohama-shi Kanagawa 221-8755 Japan
| | - Richard F. Jordan
- Department of Chemistry; The University of Chicago; 5735 South Ellis Avenue Chicago IL 60637 USA
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49
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Saito K, Umi T, Yamada T, Suga T, Akiyama T. Niobium(v)-catalyzed defluorinative triallylation of α,α,α-trifluorotoluene derivatives by triple C–F bond activation. Org Biomol Chem 2017; 15:1767-1770. [DOI: 10.1039/c6ob02825j] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The conjugation between the carbocation center and the adjacent fluorine atoms worked effectively in the cascade defluorinative triallylation of α,α,α-trifluorotoluene derivatives.
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Affiliation(s)
- Kodai Saito
- Department of Chemistry
- Gakushuin University
- Tokyo 171-8588
- Japan
| | - Taishi Umi
- Department of Chemistry
- Gakushuin University
- Tokyo 171-8588
- Japan
| | - Takayuki Yamada
- Department of Chemistry
- Gakushuin University
- Tokyo 171-8588
- Japan
| | - Takuya Suga
- Department of Chemistry
- Gakushuin University
- Tokyo 171-8588
- Japan
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50
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Affiliation(s)
- Hideki Amii
- Division of Molecular Science, Graduate School of Science and Technology, Gunma University
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