1
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Le TV, Ramachandru GG, Daugulis O. Trifluoroethylation and Pentafluoropropylation of C(sp 3)-H Bonds. Chemistry 2024; 30:e202303190. [PMID: 38011542 DOI: 10.1002/chem.202303190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2023] [Revised: 11/14/2023] [Accepted: 11/27/2023] [Indexed: 11/29/2023]
Abstract
Polyfluorinated substituents often enhance effectiveness, improve the stability within metabolic processes, and boost the lipophilicity of biologically active compounds. However, methods for their introduction into aliphatic carbon chains remain very limited. A potentially general route to integrate the fluorinated scaffolds into organic molecules involves insertion of fluorine-containing carbenes into C(sp3)-H bonds. The electron-withdrawing characteristics of perfluoroalkyl groups enhances the reactivity of these carbenes which should enable the functionalization of unactivated C(sp3)-H bonds. Curiously, it appears that use of perfluoroalkyl-containing carbenes in alkane C-H functionalization is exceedingly rare. This concept describes photolysis, enzymatic catalysis, and transition metal catalysis as three primary approaches to C(sp3)-H functionalization by trifluoromethylcarbene and its homologues.
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Affiliation(s)
- Thanh V Le
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, USA
| | - Girish G Ramachandru
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, USA
| | - Olafs Daugulis
- Department of Chemistry, University of Houston, 3585 Cullen Blvd, Houston, TX, USA
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2
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Béke F, Csenki JT, Novák Z. Fluoroalkylations and Fluoroalkenylations with Iodonium Salts. CHEM REC 2023; 23:e202300083. [PMID: 37129578 DOI: 10.1002/tcr.202300083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/02/2023] [Revised: 04/17/2023] [Indexed: 05/03/2023]
Abstract
Synthesis and applications of fluoroalkyl and fluoroalkenyliodonium salts are summarized in this account article, focusing preferably to the reagents designed in our laboratory in the last decade. Among these reagents trifluoroethyl(aryl)iodonium salts have been used most frequently to build carbon-carbon and carbon-heteroatom bonds in simple nucleophilic substitutions and through transition metal catalyzed coupling reactions. Iodonium salts equipped with unsaturated fluorinated function showed diverse reactivity due to their electron deficient character, and these molecular motifs enable cycloadditions and nucleophilic additions to prepare fluorinated carbo- and heterocyclic molecules. Beyond the overview of existing transformations, with the presented collection, we aim to inspire future developments of iodonium reagents and their application in organic synthesis.
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Affiliation(s)
- Ferenc Béke
- Catalysis and Organic Synthesis Research Group, Institute of Chemistry., Eötvös Loránd University, Pázmány Péter stny. 1/a, Budapest, 1117, Hungary
| | - János T Csenki
- Catalysis and Organic Synthesis Research Group, Institute of Chemistry., Eötvös Loránd University, Pázmány Péter stny. 1/a, Budapest, 1117, Hungary
| | - Zoltán Novák
- Catalysis and Organic Synthesis Research Group, Institute of Chemistry., Eötvös Loránd University, Pázmány Péter stny. 1/a, Budapest, 1117, Hungary
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3
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Le TV, Romero I, Daugulis O. "Sandwich" Diimine-Copper Catalyzed Trifluoroethylation and Pentafluoropropylation of Unactivated C(sp 3 )-H Bonds by Carbene Insertion. Chemistry 2023; 29:e202301672. [PMID: 37267071 PMCID: PMC10642771 DOI: 10.1002/chem.202301672] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2023] [Revised: 05/26/2023] [Accepted: 05/30/2023] [Indexed: 06/04/2023]
Abstract
We report here "sandwich"-diimine copper complex-catalyzed trifluoroethylation and pentafluoropropylation of unactivated C(sp3 )-H bonds in alkyl esters, halides, and protected amines by employing CF3 CHN2 and CF3 CF2 CHN2 reagents. Reactions proceed in dichloromethane solvent at room temperature. Identical C-H functionalization conditions and stoichiometries are employed for generality and convenience. Selectivities for C-H insertions are higher for compounds possessing stronger electron-withdrawing substituents. Preliminary mechanistic studies point to a mechanism involving a pre-equilibrium forming a "sandwich"-diimine copper-CF3 CHN2 complex followed by rate-determining loss of nitrogen affording the reactive copper carbene. It reacts with trifluoromethyldiazomethane about 6.5 times faster than with 1-fluoroadamantane explaining the need for slow addition of the diazo compound.
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Affiliation(s)
| | | | - Olafs Daugulis
- Department of Chemistry, University of Houston 3585 Cullen Blvd
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4
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Liu R, Zhou N, Zhao T, Zhang Y, Wang K, Zhao X, Lu K. Visible-Light-Induced Difluoroalkylation of Alkenes and Alkynes with Fluoro-Containing Hypervalent Iodane (III) Reagents Under Photo-Catalyst-Free Conditions. J Org Chem 2023; 88:483-492. [PMID: 36563003 DOI: 10.1021/acs.joc.2c02488] [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
A visible-light-induced difluoroalkylation of unactivated alkenes by fluoro-containing hypervalent iodine-based difluoroalkylation reagent was achieved for the first time under photo-catalyst-free conditions. Moreover, the same reaction conditions were applicable to the difluoroalkylation of alkynes to give the hydrodifluoroalkylation products in moderate to excellent yields. The readily available reagent, broad substrate scope, and photo-catalyst-free conditions make this protocol an efficient and environmental friendly method for the hydrodifluoroalkylation of alkenes and alkynes.
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Affiliation(s)
- Ruiyue Liu
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Ningning Zhou
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Tingting Zhao
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Ying Zhang
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Kun Wang
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Xia Zhao
- College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China
| | - Kui Lu
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
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5
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Zeng YF, Zhou MX, Li YN, Wu X, Guo Y, Wang Z. Switchable Reductive N-Trifluoroethylation and N-Trifluoroacetylation of Indoles with Trifluoroacetic Acid and Trimethylamine Borane. Org Lett 2022; 24:7440-7445. [PMID: 36173131 DOI: 10.1021/acs.orglett.2c03011] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The metal-free reductive N-trifluoroethylation and N-trifluoroacetylation of indoles have been developed. Bench stable and inexpensive trimethylamine borane and trifluoroacetic acid (TFA) were utilized as the reductive and fluorinating reagents, respectively. These transformations were switchable on the basis of altering the loading of trimethylamine borane and TFA. Preliminary experiments indicated indoline was the common intermediate in these two transformations.
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Affiliation(s)
- Yao-Fu Zeng
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Ming-Xi Zhou
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Yi-Na Li
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Xin Wu
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Yu Guo
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
| | - Zhen Wang
- School of Pharmaceutical Science, Hunan Provincial Key Laboratory of Tumor Microenvironment Responsive Drug Research, Hengyang Medical School, University of South China, Hengyang, Hunan 421001, China
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6
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Csenki JT, Tóth BL, Béke F, Varga B, P. Fehér P, Stirling A, Czégény Z, Bényei A, Novák Z. Synthesis of Hydrofluoroolefin-Based Iodonium Reagent via Dyotropic Rearrangement and Its Utilization in Fluoroalkylation. Angew Chem Int Ed Engl 2022; 61:e202208420. [PMID: 35876269 PMCID: PMC9540448 DOI: 10.1002/anie.202208420] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/08/2022] [Indexed: 11/25/2022]
Abstract
[1,2]-shift of atoms in alkyl fragments belongs to the class of dyotropic rearrangements. Various atoms, including halogens can be involved in the migration, however participation of iodine is unprecedented. Herein, we report our experimental and DFT studies on the oxidation triggered dyotropic rearrangement of iodo and chloro functions via butterfly-type transition state to demonstrate the migrating ability of λ3 -iodane centre. With the exploitation of dyotropic rearrangement we designed and synthesized a novel fluoroalkyl iodonium reagent from industrial feedstock gas HFO-1234yf. We demonstrated that the hypervalent reagent serves as an excellent fluoroalkylation agent for various amines and nitrogen heterocycles.
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Affiliation(s)
- János T. Csenki
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Balázs L. Tóth
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Ferenc Béke
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Bálint Varga
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
| | - Péter P. Fehér
- Research Centre for Natural SciencesEötvös Loránd Research NetworkMagyar Tudósok körútja 21117BudapestHungary
| | - András Stirling
- Research Centre for Natural SciencesEötvös Loránd Research NetworkMagyar Tudósok körútja 21117BudapestHungary
- Department of ChemistryEszterházy Károly Catholic UniversityLeányka u. 63300EgerHungary
| | - Zsuzsanna Czégény
- Research Centre for Natural SciencesEötvös Loránd Research NetworkMagyar Tudósok körútja 21117BudapestHungary
| | - Attila Bényei
- Department of Physical ChemistryUniversity of DebrecenEgyetem tér 14032DebrecenHungary
| | - Zoltán Novák
- ELTE “Lendület” Catalysis and Organic Synthesis Research Group DepartmentInstitute of ChemistryEötvös Loránd UniversityPázmány Péter stny. 1/A1117BudapestHungary
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7
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Zhou N, Wang K, Zhao T, Rui M, Zhao X, Feng J, Lu K. Design and synthesis of fluoro‐containing hypervalent iodane (III) reagents for visible light triggered cyclization of alkynoates to 3‐fluoroalkylated coumarins. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200386] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Ningning Zhou
- Tianjin University of Science and Technology Department of Pharmaceutical Engineering CHINA
| | - Kun Wang
- Tianjin University of Science and Technology Department of Pharmaceutical Engineering CHINA
| | - Tingting Zhao
- Tianjin University of Science and Technology Department of Pharmaceutical Engineering CHINA
| | - Mingyang Rui
- Tianjin University of Science and Technology Department of Pharmaceutical Engineering CHINA
| | - Xia Zhao
- Tianjin Normal University College of Chemistry CHINA
| | - Jiaxu Feng
- Tianjin University of Science and Technology Department of Chemistry CHINA
| | - Kui Lu
- Tianjin University of Science & Technology Department of Pharmaceutical Engineering No.29, 13th AvenueTianjin Economic and Technological Development Area 300457 Tianjin CHINA
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8
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Csenki JT, Tóth BL, Béke F, Varga B, Fehér PP, Stirling A, Czégény Z, Bényei A, Novák Z. Synthesis of Hydrofluoroolefin‐based Iodonium Reagent via Dyotropic Rearrangement and Its Utilization in Fluoroalkylation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208420] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- János Tivadar Csenki
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Balázs László Tóth
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Ferenc Béke
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Bálint Varga
- Eötvös Loránd Tudományegyetem: Eotvos Lorand Tudomanyegyetem Institute of Chemistry HUNGARY
| | - Péter Pál Fehér
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont HUNGARY
| | - András Stirling
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont HUNGARY
| | - Zsuzsanna Czégény
- Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont Research Centre for Natural Sciences: Termeszettudomanyi Kutatokozpont HUNGARY
| | - Attila Bényei
- University of Debrecen: Debreceni Egyetem Department of Physical Chemistry HUNGARY
| | - Zoltán Novák
- Eotvos Lorand Tudomanyegyetem Institute of Chemistry Pázány Péter stny 1/a 1117 Budapest HUNGARY
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9
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Baguia H, Evano G. Direct Perfluoroalkylation of C−H Bonds in (Hetero)arenes. Chemistry 2022; 28:e202200975. [DOI: 10.1002/chem.202200975] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Hajar Baguia
- Laboratoire de Chimie Organique Service de Chimie et Physico-Chimie Organiques Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
| | - Gwilherm Evano
- Laboratoire de Chimie Organique Service de Chimie et Physico-Chimie Organiques Université libre de Bruxelles (ULB) Avenue F. D. Roosevelt 50, CP160/06 1050 Brussels Belgium
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10
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Diastereo-selective synthesis of CF3-substituted epoxide via in situ generated trifluoroethylideneiodonium ylide. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.07.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
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11
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Hu BL, Wu CF, Zhang XG, Kim J. Direct synthesis of trifluoroethylated benzofurans from silver-catalyzed annulation of trifluoromethyl propynols with phenols. Tetrahedron 2022. [DOI: 10.1016/j.tet.2022.132929] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
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12
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Deng Z, Qiu LY, Pan W, Qian B, Chen J, Zhang H, Chen QY, Cao W, Tang XJ. TFA-Promoted Intermolecular Friedel-Crafts Alkylation of Arenes with 2,2,2-Trifluoroethylaryl Sulfoxides. Chem Asian J 2022; 17:e202200190. [PMID: 35644874 DOI: 10.1002/asia.202200190] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/26/2022] [Revised: 05/14/2022] [Indexed: 11/08/2022]
Abstract
The classical Pummerer rearrangement of 2,2,2-trifluoroethylaryl sulfoxide with trifluoracetic anhydride (TFAA) affords the S , O -acetal efficiently. In the presence of trifluoracetic acid (TFA) as the co-solvent, the S , O -acetal can regenerate reactive thionium intermediate of Pummerer rearrangement. When employing arenes as nucleophiles, this strategy produces corresponding 1-thiyl-2,2,2-trifluoroethyl arenes with excellent yields under metal-free conditions.
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Affiliation(s)
- Zhen Deng
- Shanghai University, Department of Chemistry, CHINA
| | - Liu-Yan Qiu
- Shanghai University, Department of Chemistry, CHINA
| | - Wenjie Pan
- Shanghai University, Department of Chemistry, CHINA
| | - Baiyu Qian
- Shanghai University, Department of Chemistry, CHINA
| | - Jie Chen
- Shanghai University, Department of Chemistry, CHINA
| | - Hui Zhang
- Shanghai University, Department of Chemistry, CHINA
| | - Qing-Yun Chen
- Shanghai Institute of Organic Chemistry, Key Laboratory of Organofluorine Chemistry, CHINA
| | - Weiguo Cao
- Shanghai University, Department of Chemistry, CHINA
| | - Xiao-Jun Tang
- Shanghai University, Department of chemistry, 99th Shang-Da Road, 200444, Shanghai, CHINA
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13
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Zhou N, Liu R, Zhang C, Wang K, Feng J, Zhao X, Lu K. Photoinduced Three-Component Difluoroalkylation of Quinoxalinones with Alkenes via Difluoroiodane(III) Reagents. Org Lett 2022; 24:3576-3581. [PMID: 35546558 DOI: 10.1021/acs.orglett.2c01358] [Citation(s) in RCA: 15] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
An environmentally friendly strategy for the photocatalyzed three-component reaction between quinoxalinones, alkenes, and hypervalent iodine(III) reagents is disclosed. The new designed difluoroiodane(III) reagent shows excellent reactivity, providing a wide range of difluoroalkyl-substituted quinoxaline-2(1H)-ones in moderate to excellent yields under mild conditions. Experimental studies demonstrated that a difluoroalkyl radical intermediate was involved in this reaction.
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Affiliation(s)
- Ningning Zhou
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Ruiyue Liu
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Chunmeng Zhang
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Kun Wang
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Jiaxu Feng
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
| | - Xia Zhao
- College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387, China
| | - Kui Lu
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry, College of Biotechnology, Tianjin University of Science &Technology, Tianjin 300457, China
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14
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Dong L, Feng T, Xiong D, Xu Z, Cheng J, Xu X, Shao X, Li Z. Copper(II)-Catalyzed Direct C-H Trifluoroethylation of Heteroarenes. Org Lett 2022; 24:1913-1917. [PMID: 35261242 DOI: 10.1021/acs.orglett.2c00245] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Trifluoroethyl (CH2CF3) is an important functional group in many pharmaceutical and agrochemical compounds. Herein, we report an efficient method for the copper-catalyzed direct trifluoroethylation of heteroarenes. The reaction exhibited good compatibility to various substrates, and the desired products were obtained in good yields. Preliminary mechanistic investigations indicate the trifluoroethyl radical is involved in the catalytic circle. Moreover, the late-stage modification of bioactive molecules further confirmed the practical applications of this method.
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Affiliation(s)
- Lefeng Dong
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Tingting Feng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Dongdong Xiong
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Zhiping Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Jiagao Cheng
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology, School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, PR China
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15
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Canty AJ, Ariafard A. Two-Stage Catalysis in the Pd-Catalyzed Formation of 2,2,2-Trifluoroethyl-Substituted Acrylamides: Oxidative Alkylation of PdII by an IIII Reagent and Roles for Acetate, Triflate, and Triflic Acid. Organometallics 2022. [DOI: 10.1021/acs.organomet.1c00644] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Allan J. Canty
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
| | - Alireza Ariafard
- School of Natural Sciences-Chemistry, University of Tasmania, Hobart, Tasmania 7001, Australia
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16
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Ruyet L, Lapuh MI, Koshti VS, Földesi T, Jubault P, Poisson T, Novák Z, Besset T. Z-Selective Pd-catalyzed 2,2,2-trifluoroethylation of acrylamides at room temperature. Chem Commun (Camb) 2021; 57:6241-6244. [PMID: 34079967 DOI: 10.1039/d1cc02007b] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
A straightforward 2,2,2-trifluoroethylation of acrylamides by Pd-catalyzed C-H bond activation was reported by using a fluorinated hypervalent iodine reagent as a coupling partner. At room temperature, this additive-free approach allowed the synthesis of Z-2,2,2-trifluoroethylated acrylamides (19 examples, up to 73% yield) in a stereoselective manner. Under these mild reaction conditions, the methodology turned out to be functional group tolerant and mechanistic studies gave us a better understanding of the transformation.
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Affiliation(s)
- Louise Ruyet
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
| | - Maria I Lapuh
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
| | - Vijay S Koshti
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
| | - Tamás Földesi
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of Science, Budapest H-1117, Hungary
| | - Philippe Jubault
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
| | - Thomas Poisson
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France. and Institut Universitaire de France, Paris 75231, France
| | - Zoltán Novák
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of Science, Budapest H-1117, Hungary
| | - Tatiana Besset
- Normandie Univ, INSA Rouen, UNIROUEN, CNRS, COBRA (UMR 6014), Rouen 76000, France.
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17
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Han ZZ, Zhang CP. Phenyl(trifluoroethyl)iodonium-triflate-initiated ring-opening polymerization of tetrahydrofuran. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153146] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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18
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Kervefors G, Pal KB, Tolnai GL, Mahanti M, Leffler H, Nilsson UJ, Olofsson B. Synthesis and Biological Studies of O3‐Aryl Galactosides as Galectin Inhibitors. Helv Chim Acta 2021. [DOI: 10.1002/hlca.202000220] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gabriella Kervefors
- Department of Organic Chemistry, Arrhenius Laboratory Stockholm University SE-106 91 Stockholm Sweden
| | - Kumar Bhaskar Pal
- Centre for Analysis and Synthesis, Department of Chemistry Lund University SE-221 00 Lund Sweden
| | - Gergely L. Tolnai
- Department of Organic Chemistry, Arrhenius Laboratory Stockholm University SE-106 91 Stockholm Sweden
- Present address Institute of Chemistry Eotvos Lorand University Budapest Hungary
| | - Mukul Mahanti
- Centre for Analysis and Synthesis, Department of Chemistry Lund University SE-221 00 Lund Sweden
| | - Hakon Leffler
- Department of Laboratory Medicine, Section MIG Lund University SE-221 84 Lund Sweden
| | - Ulf J. Nilsson
- Centre for Analysis and Synthesis, Department of Chemistry Lund University SE-221 00 Lund Sweden
| | - Berit Olofsson
- Department of Organic Chemistry, Arrhenius Laboratory Stockholm University SE-106 91 Stockholm Sweden
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19
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Yan T, Chen C, Wen L. Study on the Selective Difluorochloroethylation Reactions of Amides with Hypervalent Iodine Reagent. CHINESE J ORG CHEM 2021. [DOI: 10.6023/cjoc202104007] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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20
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Wu W, Luo B, You Y, Weng Z. Copper-catalyzed one-pot synthesis of 2-(2,2,2-trifluoroethyl)-substituted benzofused heterocycles. Org Chem Front 2021. [DOI: 10.1039/d1qo00157d] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
A method for copper-catalyzed synthesis of 2-trifluoroethyl-substituted benzofurans and indoles from the reaction of salicylaldehyde/2-aminobenzaldehyde p-tosylhydrazones with 2-bromo-3,3,3-trifluoropropene has been developed.
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Affiliation(s)
- Wei Wu
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Beibei Luo
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Yi You
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
| | - Zhiqiang Weng
- Key Laboratory of Molecule Synthesis and Function Discovery
- and Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials
- College of Chemistry
- Fuzhou University
- Fuzhou
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21
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Arun V, Roy L, De Sarkar S. Alcohols as Fluoroalkyl Synthons: Ni-catalyzed Dehydrogenative Approach to Access Polyfluoroalkyl Bis-indoles. Chemistry 2020; 26:16649-16654. [PMID: 32914904 DOI: 10.1002/chem.202003912] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2020] [Indexed: 01/04/2023]
Abstract
An acceptorless dehydrogenative strategy for the synthesis of polyfluoroalkylated bis-indoles is described by employing an earth-abundant nickel-based catalytic system under air. The notable feature of the present transformation is the use of bench stable and easily affordable polyfluorinated alcohols without any pre-functionalization for the introduction of precious polyfluoroalkyl groups. The developed straightforward protocol accomplished biologically relevant fluoroalkyl bis-indoles in a sustainable fashion. Extensive DFT study predicts the unique role of indole molecules which stabilizes the transition states during the dehydrogenation process of polyfluorinated alcohols, presumably through non-covalent π⋅⋅⋅π and H-bonding interactions.
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Affiliation(s)
- V Arun
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
| | - Lisa Roy
- Institute of Chemical Technology Mumbai, IOC Odisha Campus Bhubaneswar, IIT Kharagpur Extension Centre, Bhubaneswar, 751013, India
| | - Suman De Sarkar
- Department of Chemical Sciences, Indian Institute of Science Education and Research Kolkata, Mohanpur, 741246, West Bengal, India
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22
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Zhao K, Zhang ZY, Cui XL, Wang YX, Wu XD, Li WM, Wu JX, Zhao LL, Guo JY, Loh TP. Visible-Light-Induced Regio- and Stereoselective C(sp 2)-H Trifluoroethylation of Enamides with 2,2,2-Trifluoroethyl Iodide. Org Lett 2020; 22:9029-9035. [PMID: 33176097 DOI: 10.1021/acs.orglett.0c03418] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A photoredox-catalyzed regio- and stereoselective trifluoroethylation reaction of enamides using commercially available 2,2,2-trifluoroethyl iodide as trifluoroethylating agents has been developed, furnishing geometrically defined and synthetically and physiochemically pivotal β-trifluoroethylated enamides bearing a diverse range of functional groups.
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Affiliation(s)
- Kai Zhao
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Ze-Yu Zhang
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Xian-Lu Cui
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Ying-Xue Wang
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Xian-Dan Wu
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Wei-Ming Li
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Jia-Xu Wu
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Li-Li Zhao
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Jing-Yu Guo
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, Technical Institute of Fluorochemistry, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, Nanjing 211816, China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, Singapore 637371, Singapore
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23
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Abstract
![]()
A visible
light induced palladium-catalyzed fluoroalkylation method
was developed. The Heck-type alkyl coupling reaction enables the introduction
of trifluoroethyl, difluoroethyl and other fluoroalkyl fragment into
styrenes under mild reaction conditions without the use of additional
photosensitizers and ensures access to fluoroalkylated olefins on
a broad scale.
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Affiliation(s)
- Réka Adamik
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of ́ Science, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary
| | - Tamás Földesi
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of ́ Science, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary
| | - Zoltán Novák
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös Loránd University, Faculty of ́ Science, Pázmány Péter stny. 1/A, H-1117 Budapest, Hungary
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24
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Zhou K, Geng J, Wang D, Zhang J, Zhao Y. An Indirect Strategy for Trifluoromethylation via an Iridium Catalyst: Approach to Generate Isocoumarin Skeletons in Bioactive Molecules. Org Lett 2020; 22:5109-5114. [PMID: 32551685 DOI: 10.1021/acs.orglett.0c01700] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
3-Bromo-1,1,1-trifluoroacetone was first disclosed as an effective indirect trifluoromethylation reagent to construct the important 3-trifluoromethyl isocoumarin skeleton. The reaction proceeds through a ligand-promoted, iridium-catalyzed ortho-selective C-H alkylation of benzoic acid and an intermolecular cyclization reaction promoted by silver acetate. A wide range of 3-trifluoromethyl isocoumarins can be easily obtained in moderate to good yields. Importantly, the isocoumarin skeleton can be easily formed in bioactive compounds, highlighting the importance of this reaction.
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Affiliation(s)
- Kehan Zhou
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, P. R. China.,Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jingyao Geng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Dongjie Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jingyu Zhang
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, P. R. China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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25
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Mai BK, Himo F. Mechanisms of Metal-Catalyzed Electrophilic F/CF3/SCF3 Transfer Reactions from Quantum Chemical Calculations. TOP ORGANOMETAL CHEM 2020. [DOI: 10.1007/3418_2020_45] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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26
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Metal- and additive-free cascade trifluoroethylation/cyclization of organic isoselenocyanates by phenyl(2,2,2-trifluoroethyl)iodonium triflate. J Fluor Chem 2019. [DOI: 10.1016/j.jfluchem.2019.109360] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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27
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Zhao Z, Ma KCY, Legault CY, Murphy GK. Denitrogenative Hydrotrifluoromethylation of Benzaldehyde Hydrazones: Synthesis of (2,2,2-Trifluoroethyl)arenes. Chemistry 2019; 25:11240-11245. [PMID: 31276254 DOI: 10.1002/chem.201902818] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Revised: 07/03/2019] [Indexed: 12/20/2022]
Abstract
Reacting hydrazones of arylaldehydes with Togni's CF3 -benziodoxolone reagent, in the presence of potassium hydroxide and cesium fluoride, induces a denitrogenative hydrotrifluoromethylation event to produce (2,2,2-trifluoroethyl)arenes. This novel reaction was tolerant to many electronically-diverse functional groups and substitution patterns, as well as naphthyl- and heteroaryl-derived substrates. Advantages of this process include the easy access to hydrazone precursors on a large scale, speed and operational simplicity, and being transition metal-free.
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Affiliation(s)
- Zhensheng Zhao
- Department of Chemistry, University of Waterloo, 200 University Ave W., Waterloo, ON, N2L3G1, Canada
| | - Kevin C Y Ma
- Department of Chemistry, University of Waterloo, 200 University Ave W., Waterloo, ON, N2L3G1, Canada
| | - Claude Y Legault
- Department of Chemistry, Université de Sherbrooke, Sherbrooke, Québec, J1K2R1, Canada
| | - Graham K Murphy
- Department of Chemistry, University of Waterloo, 200 University Ave W., Waterloo, ON, N2L3G1, Canada
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28
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Budhwan R, Yadav S, Murarka S. Late stage functionalization of heterocycles using hypervalent iodine(iii) reagents. Org Biomol Chem 2019; 17:6326-6341. [PMID: 31215580 DOI: 10.1039/c9ob00694j] [Citation(s) in RCA: 48] [Impact Index Per Article: 9.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Late stage functionalization (LSF) through direct X-H manipulations (X = C, N) enables synthetic chemists to accelerate the diversification of natural products, agrochemicals and pharmaceuticals allowing rapid access to novel bioactive molecules without resorting to arduous de novo synthesis. LSF does not only allow tapping of the hitherto unexplored chemical space but also renders the synthetic sequence more straightforward, atom economical and cost-effective. In this regard, the recent decade has witnessed the emergence of hypervalent iodine(iii) reagents as a powerful synthetic tool owing to their easy availability, mild reaction conditions, remarkable oxidizing properties and high functional group tolerance. Iodine(iii) reagents have tremendous applications in the regio- and chemo-selective late-stage functionalization of a diverse variety of heterocycles through an exciting range of transformations, such as oxidative amination, cross-dehydrogenative coupling (CDC), fluoroalkylation, azidation, halogenation and oxidation. The present review, classified according to the types of synthetic methods involved, encompasses all these recent developments in the field of transition-metal-free iodine(iii)-catalyzed/mediated direct functionalizations of heterocycles with representative examples and insightful mechanistic discussions.
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Affiliation(s)
- Rajnish Budhwan
- Department of Chemistry, Indian Institute of Technology Jodhpur, NH-65 Nagaur Road, Karwar - 342037, Jodhpur District, Rajasthan, India.
| | - Suman Yadav
- Department of Chemistry, Indian Institute of Technology Jodhpur, NH-65 Nagaur Road, Karwar - 342037, Jodhpur District, Rajasthan, India.
| | - Sandip Murarka
- Department of Chemistry, Indian Institute of Technology Jodhpur, NH-65 Nagaur Road, Karwar - 342037, Jodhpur District, Rajasthan, India.
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29
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Maiti S, Kim J, Park JH, Nam D, Lee JB, Kim YJ, Kee JM, Seo JK, Myung K, Rohde JU, Choe W, Kwon OH, Hong SY. Chemoselective Trifluoroethylation Reactions of Quinazolinones and Identification of Photostability. J Org Chem 2019; 84:6737-6751. [DOI: 10.1021/acs.joc.9b00470] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Saikat Maiti
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
- Center for Genomic Integrity (CGI), Institute for Basic Science (IBS), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Jaeshin Kim
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Jae-Heon Park
- Center for Soft and Living Matter, IBS, 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | | | - Jae Bin Lee
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Ye-Jin Kim
- Center for Soft and Living Matter, IBS, 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | | | | | - Kyungjae Myung
- Center for Genomic Integrity (CGI), Institute for Basic Science (IBS), 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | | | | | - Oh-Hoon Kwon
- Center for Soft and Living Matter, IBS, 50 UNIST-gil, Ulsan 44919, Republic of Korea
| | - Sung You Hong
- School of Energy and Chemical Engineering, Ulsan National Institute of Science and Technology (UNIST), 50 UNIST-gil, Ulsan 44919, Republic of Korea
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30
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Han Q, Hu X, Xue X, Zhao C, Zhang C. Palladium‐Catalyzed Trifluoroethylation of Benzo[
h
]quinoline Derivatives by Mesityl(2,2,2‐trifluoroethyl)iodonium Triflate. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900030] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Qiu‐Yan Han
- School of Chemistry, Chemical Engineering and Life ScienceWuhan University of Technology 205 Luoshi Road Wuhan 430070 China
| | - Xiaoxiao Hu
- State Key Laboratory of Elemento-organic Chemistry, College of ChemistryNankai University Tianjin 300071 China
| | - Xiao‐Song Xue
- State Key Laboratory of Elemento-organic Chemistry, College of ChemistryNankai University Tianjin 300071 China
| | - Cheng‐Long Zhao
- 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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31
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Li Z, Dong J, Wang J, Yang DY, Weng Z. Elemental sulfur-promoted one-pot synthesis of 2-(2,2,2-trifluoroethyl)benzoxazoles and their derivatives. Chem Commun (Camb) 2019; 55:13132-13135. [DOI: 10.1039/c9cc06822h] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
An elemental sulfur promoted one-pot synthesis of 2-(2,2,2-trifluoroethyl)benzoxazole derivatives from the reaction of o-aminophenols, thiols, and anilines with 2-bromo-3,3,3-trifluoropropene is reported.
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Affiliation(s)
- Zhengyu Li
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Jingnan Dong
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Junwen Wang
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
| | - Ding-Yah Yang
- Department of Chemistry
- Tunghai University
- Taichung City 40704
- Taiwan
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment, and Key Laboratory of Molecule Synthesis and Function Discovery
- College of Chemistry
- Fuzhou University
- Fuzhou
- China
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32
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Zhao CL, Han QY, Zhang CP. TfOH-Promoted Transition-Metal-Free Cascade Trifluoroethylation/Cyclization of Organic Isothiocyanates by Phenyl(2,2,2-trifluoroethyl)iodonium Triflate. Org Lett 2018; 20:6480-6484. [DOI: 10.1021/acs.orglett.8b02793] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Cheng-Long Zhao
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
| | - Qiu-Yan Han
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
| | - Cheng-Pan Zhang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan 430070, China
- Department of Chemistry, College of Basic Medicine, Army Medical University, Shapingba, Chongqing 400038, China
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33
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Lu Y, Goldstein EL, Stoltz BM. Palladium-Catalyzed Enantioselective C sp3-C sp3 Cross-Coupling for the Synthesis of (Poly)fluorinated Chiral Building Blocks. Org Lett 2018; 20:5657-5660. [PMID: 30183315 PMCID: PMC6192028 DOI: 10.1021/acs.orglett.8b02369] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
A general method for the enantioselective synthesis of carbo- and heterocyclic carbonyl compounds bearing fluorinated α-tetrasubstituted stereocenters using palladium-catalyzed decarboxylative allylic alkylation is described. The stereoselective Csp3-Csp3 cross-coupling reaction delivers five- and six-membered ketone and lactam products bearing (poly)fluorinated tetrasubstituted chiral centers in high yields and enantioselectivities. These fluorinated, stereochemically rich building blocks hold potential value in medicinal chemistry and are prepared using an orthogonal and enantioselective approach into such chiral moieties compared to traditional approaches, often without the use of electrophilic fluorinating reagents.
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Affiliation(s)
- Yanhui Lu
- Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa, Nagoya 464-8603, Japan
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, MC 101-20, Pasadena, California 91125, United States
| | - Elizabeth L. Goldstein
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, MC 101-20, Pasadena, California 91125, United States
| | - Brian M. Stoltz
- The Warren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, California Institute of Technology, MC 101-20, Pasadena, California 91125, United States
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34
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Soni V, Sharma DM, Punji B. Nickel-Catalyzed Regioselective C(2)-H Difluoroalkylation of Indoles with Difluoroalkyl Bromides. Chem Asian J 2018; 13:2516-2521. [PMID: 29722157 DOI: 10.1002/asia.201800504] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2018] [Revised: 05/01/2018] [Indexed: 12/20/2022]
Abstract
Regioselective C(2)-H difluoroalkylation of C-3 unsubstituted indoles with commonly available fluoroalkyl bromides is successfully achieved employing a simple nickel catalyst system, (DME)NiCl2 /Xantphos. This methodology shows excellent regioselectivity and exhibits a broad substrate scope. Various functional groups, such as -OMe, -F, and -Br, are tolerated on the indole backbone to give the difluoroalkylated products in moderate to good yields. Preliminary mechanistic findings demonstrate that the reaction is homogeneous in nature and involves a radical manifold. Synthetic utility of this nickel-catalyzed method is demonstrated by synthesizing melatonin receptor antagonist Luzindole derivative.
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Affiliation(s)
- Vineeta Soni
- Organometallic Synthesis and Catalysis Group, Chemical Engineering Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411 008, Maharastra, India
| | - Dipesh M Sharma
- Organometallic Synthesis and Catalysis Group, Chemical Engineering Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411 008, Maharastra, India
| | - Benudhar Punji
- Organometallic Synthesis and Catalysis Group, Chemical Engineering Division, CSIR-National Chemical Laboratory (CSIR-NCL), Dr. Homi Bhabha Road, Pune, 411 008, Maharastra, India
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35
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Mészáros Á, Székely A, Stirling A, Novák Z. Design of Trifluoroalkenyl Iodonium Salts for a Hypervalency‐Aided Alkenylation–Cyclization Strategy: Metal‐Free Construction of Aziridine Rings. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802347] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Ádám Mészáros
- ELTE “Lendület” Catalysis and Organic Synthesis Research GroupInstitute of ChemistryEötvös UniversityFaculty of Science Pázmány Péter stny. 1/A 1117 Budapest Hungary
| | - Anna Székely
- ELTE “Lendület” Catalysis and Organic Synthesis Research GroupInstitute of ChemistryEötvös UniversityFaculty of Science Pázmány Péter stny. 1/A 1117 Budapest Hungary
- Current address: Max Planck Institut für Kohlenforschung Kaiser-Wilhelm-Platz 2 45470 Mülheim an der Ruhr Germany
| | - András Stirling
- Theoretical Chemistry Research GroupInstitute of Organic ChemistryResearch Centre for Natural Sciences Magyar tudósok körútja 2. Budapest Hungary
| | - Zoltán Novák
- ELTE “Lendület” Catalysis and Organic Synthesis Research GroupInstitute of ChemistryEötvös UniversityFaculty of Science Pázmány Péter stny. 1/A 1117 Budapest Hungary
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36
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Mészáros Á, Székely A, Stirling A, Novák Z. Design of Trifluoroalkenyl Iodonium Salts for a Hypervalency-Aided Alkenylation-Cyclization Strategy: Metal-Free Construction of Aziridine Rings. Angew Chem Int Ed Engl 2018; 57:6643-6647. [PMID: 29660841 DOI: 10.1002/anie.201802347] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/22/2018] [Revised: 04/01/2018] [Indexed: 12/19/2022]
Abstract
The synthesis of fluorinated compounds and their use as pharmaceutical ingredients or synthetic building blocks have been in the focus of chemical and medicinal research. However, the efficient synthesis of trifluoromethylated nitrogen heterocycles is sometimes challenging. Herein, we disclose a simple aziridination process that relies on the use of amines and novel alkenyl iodonium reagents for the synthesis of strained, trifluoromethylated heterocycles. With the utilization of a newly designed and bench-stable but highly reactive hypervalent alkenyl iodonium species, these three-membered-ring heterocyclic compounds can be efficiently constructed from simple amines under mild conditions in the absence of transition-metal catalysts. The special reactivity of the new trifluoropropenyl synthon towards nucleophilic centers could be exploited in more general cyclization and alkenylation reactions in the future.
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Affiliation(s)
- Ádám Mészáros
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös University, Faculty of Science, Pázmány Péter stny. 1/A, 1117, Budapest, Hungary
| | - Anna Székely
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös University, Faculty of Science, Pázmány Péter stny. 1/A, 1117, Budapest, Hungary.,Current address: Max Planck Institut für Kohlenforschung, Kaiser-Wilhelm-Platz 2, 45470, Mülheim an der Ruhr, Germany
| | - András Stirling
- Theoretical Chemistry Research Group, Institute of Organic Chemistry, Research Centre for Natural Sciences, Magyar tudósok körútja 2., Budapest, Hungary
| | - Zoltán Novák
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Institute of Chemistry, Eötvös University, Faculty of Science, Pázmány Péter stny. 1/A, 1117, Budapest, Hungary
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37
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Mai BK, Szabó KJ, Himo F. Mechanisms of Rh-Catalyzed Oxyfluorination and Oxytrifluoromethylation of Diazocarbonyl Compounds with Hypervalent Fluoroiodine. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00667] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Binh Khanh Mai
- Department of Organic 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
| | - Fahmi Himo
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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38
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Yan SY, Zhang ZZ, Shi BF. Nickel-catalyzed direct C-H trifluoroethylation of heteroarenes with trifluoroethyl iodide. Chem Commun (Camb) 2018; 53:10287-10290. [PMID: 28868560 DOI: 10.1039/c7cc05532c] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A highly selective nickel-catalyzed C-H trifluoroethylation of heteroarenes was developed with the assistance of a monodentate directing group. This protocol provides efficient access to various trifluoroethyl-substituted heteroarenes, including indoles, pyrroles, furans, and thiophenes, with commercially available CF3CH2I as an alkylation reagent. This robust catalytic procedure is scalable and tolerates a broad range of functional groups. Moreover, multifluoroalkylation of indoles is also viable.
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Affiliation(s)
- Sheng-Yi Yan
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.
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39
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Zhang H, Wang HY, Luo Y, Chen C, Cao Y, Chen P, Guo YL, Lan Y, Liu G. Regioselective Palladium-Catalyzed C-H Bond Trifluoroethylation of Indoles: Exploration and Mechanistic Insight. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03220] [Citation(s) in RCA: 71] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hao Zhang
- State
Key Laboratory of Organometallic Chemistry, Center for Excellence
in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Road, Shanghai, China, 200032
| | - Hao-Yang Wang
- State
Key Laboratory of Organometallic Chemistry, Center for Excellence
in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Road, Shanghai, China, 200032
| | - Yixin Luo
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, P. R. China
| | - Chaohuang Chen
- State
Key Laboratory of Organometallic Chemistry, Center for Excellence
in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Road, Shanghai, China, 200032
| | - Yimiao Cao
- State
Key Laboratory of Organometallic Chemistry, Center for Excellence
in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Road, Shanghai, China, 200032
| | - Pinhong Chen
- State
Key Laboratory of Organometallic Chemistry, Center for Excellence
in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Road, Shanghai, China, 200032
| | - Yin-Long Guo
- State
Key Laboratory of Organometallic Chemistry, Center for Excellence
in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Road, Shanghai, China, 200032
| | - Yu Lan
- School
of Chemistry and Chemical Engineering, Chongqing University, Chongqing 400030, P. R. China
| | - Guosheng Liu
- State
Key Laboratory of Organometallic Chemistry, Center for Excellence
in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling
Road, Shanghai, China, 200032
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40
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Yang J, Han QY, Zhao CL, Dong T, Hou ZY, Qin HL, Zhang CP. Pd-catalyzed divergent trifluoroethylation and arylation of arylboronic acids by aryl(2,2,2-trifluoroethyl)iodonium triflates. Org Biomol Chem 2018; 14:7654-8. [PMID: 27384263 DOI: 10.1039/c6ob01384h] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
Highly electrophilic aryl(2,2,2-trifluoroethyl)iodonium triflates have been used for the first time as trifluoroethyl and aryl transfer reagents in Pd-catalyzed functionalization of arylboronic acids. Electron-rich arylboronic acids reacted with aryl(2,2,2-trifluoroethyl)iodonium triflates (2a-b) in CH3CN in the presence of Pd2(dba)3 and K3PO4 at room temperature to provide trifluoroethyl arenes in up to 82% yield, while the reactions of both electron-rich and -poor arylboronic acids with 2a-b in DMF in the presence of Pd[P(t-Bu)3]2 and Cs2CO3 at 40 °C afforded arylation products in up to 99% yield. This tunable protocol allows access to trifluoroethyl arenes or biaryls in good to excellent yields under mild conditions and without the addition of extra ligands.
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Affiliation(s)
- Jing Yang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, China.
| | - Qiu-Yan Han
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, China.
| | - Cheng-Long Zhao
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, China.
| | - Tao Dong
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, China.
| | - Zhi-Yuan Hou
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, China.
| | - Hua-Li Qin
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, China.
| | - Cheng-Pan Zhang
- School of Chemistry, Chemical Engineering and Life Science, Wuhan University of Technology, 205 Luoshi Road, Wuhan, 430070, China.
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41
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Simkó DC, Elekes P, Pázmándi V, Novák Z. Sulfonium Salts as Alkylating Agents for Palladium-Catalyzed Direct Ortho Alkylation of Anilides and Aromatic Ureas. Org Lett 2018; 20:676-679. [PMID: 29327592 DOI: 10.1021/acs.orglett.7b03813] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel method for the ortho alkylation of acetanilide and aromatic urea derivatives via C-H activation was developed. Alkyl dibenzothiophenium salts are considered to be new reagents for the palladium-catalyzed C-H activation reaction, which enables the transfer of methyl and other alkyl groups from the sulfonium salt to the aniline derivatives under mild catalytic conditions.
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Affiliation(s)
- Dániel Cs Simkó
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Department of Organic Chemistry, Faculty of Science, Eötvös University , Pázmány P. stny. 1/A, H-1117 Budapest, Hungary
| | - Péter Elekes
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Department of Organic Chemistry, Faculty of Science, Eötvös University , Pázmány P. stny. 1/A, H-1117 Budapest, Hungary
| | - Vivien Pázmándi
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Department of Organic Chemistry, Faculty of Science, Eötvös University , Pázmány P. stny. 1/A, H-1117 Budapest, Hungary
| | - Zoltán Novák
- ELTE "Lendület" Catalysis and Organic Synthesis Research Group, Department of Organic Chemistry, Faculty of Science, Eötvös University , Pázmány P. stny. 1/A, H-1117 Budapest, Hungary
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42
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Affiliation(s)
- András Stirling
- Theoretical Chemistry Research Group, Institute of Organic Chemistry; Research Centre for Natural Sciences; Budapest Hungary
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43
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Zhao CL, Yang J, Han ZZ, Zhang CP. Structure-dependent selective O - or C -trifluoroethylation of 1,3-dicarbonyls by mesityl(2,2,2-trifluoroethyl)iodonium triflate. J Fluor Chem 2017. [DOI: 10.1016/j.jfluchem.2017.09.009] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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44
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Abstract
The first total synthesis of the natural product bruceolline I, isolated in small quantities from the ethanol extract of Brucea mollis stems, was achieved in 29% yield over nine steps and with high enantiomeric purity (>98%). The key step of the process is the tandem gold-catalyzed rearrangement/Nazarov reaction of a propargylic acetate derivative. This synthesis provides a sufficient amount of synthesized bruceolline I for further bioassays.
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Affiliation(s)
- Dina Scarpi
- Dipartimento di Chimica "U. Schiff", Università degli Studi di Firenze , Via della Lastruccia 13, 50019, Sesto Fiorentino (FI), Italy
| | - Cristina Faggi
- Centro di Cristallografia Università degli Studi di Firenze , Via della Lastruccia 3, 50019 Sesto Fiorentino (FI), Italy
| | - Ernesto G Occhiato
- Dipartimento di Chimica "U. Schiff", Università degli Studi di Firenze , Via della Lastruccia 13, 50019, Sesto Fiorentino (FI), Italy
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45
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Maraswami M, Pankajakshan S, Chen G, Loh TP. Palladium-Catalyzed Direct C-H Trifluoroethylation of Aromatic Amides. Org Lett 2017; 19:4223-4226. [PMID: 28782962 DOI: 10.1021/acs.orglett.7b01859] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A simple and direct C-H trifluoroethylation of aromatic amides has been developed. The protocol is applicable to a variety of aromatic amides, including ones derived from amino acids. The developed method can be used for further modifications of peptides. Preliminary mechanistic studies have been done by isolating the reaction intermediate.
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Affiliation(s)
- Manikantha Maraswami
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371
| | - Sreekumar Pankajakshan
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371
| | - Gang Chen
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, College of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University , Nanjing, Jiangsu 210009, P. R. China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University , Singapore 637371.,Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China , Hefei 230026, China
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46
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Zhang Y, Du H, Zhu M, Li J, Zou D, Wu Y, Wu Y. Copper-catalyzed decarboxylative trifluoroethylation of cinnamic acids. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.060] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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Haghighi F, Panahi F, Golbon Haghighi M, Khalafi-Nezhad A. Transition metal-free N-fluoroalkylation of amines using cyanurate activated fluoroalcohols. Chem Commun (Camb) 2017; 53:12650-12653. [DOI: 10.1039/c7cc07428j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
N-Fluoroalkylation of amines was efficiently achieved using fluoroalkyl alcohols activated by 2,4,6-trichloro-1,3,5-triazine under mild and catalyst-free conditions.
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Affiliation(s)
- Fatemeh Haghighi
- Chemistry Department
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | - Farhad Panahi
- Chemistry Department
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
| | | | - Ali Khalafi-Nezhad
- Chemistry Department
- College of Sciences
- Shiraz University
- Shiraz 71454
- Iran
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48
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Borah AJ, Shi Z. Palladium-catalyzed regioselective C–H fluoroalkylation of indoles at the C4-position. Chem Commun (Camb) 2017; 53:3945-3948. [DOI: 10.1039/c7cc01274h] [Citation(s) in RCA: 82] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
An exclusive catalytic C4-selective fluoroalkylation of indoles with highly active (1H, 1H-perfluoroalkyl)mesityliodonium triflate has been described.
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Affiliation(s)
- Arun Jyoti Borah
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
| | - Zhuangzhi Shi
- State Key Laboratory of Coordination Chemistry
- School of Chemistry and Chemical Engineering
- Nanjing University
- Nanjing
- China
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49
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Kovács S, Tóth BL, Borsik G, Bihari T, May NV, Stirling A, Novák Z. Directortho-Trifluoroethylation of Aromatic Ureas by Palladium Catalyzed C-H activation: A Missing Piece of Aromatic Substitutions. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201601136] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Szabolcs Kovács
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Institute of Chemistry.; Eötvös Loránd University; Pázmány Péter stny. 1/a Budapest 1117 Hungary
| | - Balázs L. Tóth
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Institute of Chemistry.; Eötvös Loránd University; Pázmány Péter stny. 1/a Budapest 1117 Hungary
| | - Gábor Borsik
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Institute of Chemistry.; Eötvös Loránd University; Pázmány Péter stny. 1/a Budapest 1117 Hungary
| | - Tamás Bihari
- Research Centre for Natural Sciences of the; Hungarian Academy of Sciences, Institute of Organic Chemistry; Magyar Tudósok körútja 2. H- 1117 Budapest Hungary
| | - Nóra V. May
- Research Centre for Natural Sciences of the; Hungarian Academy of Sciences, Institute of Organic Chemistry; Magyar Tudósok körútja 2. H- 1117 Budapest Hungary
| | - András Stirling
- Research Centre for Natural Sciences of the; Hungarian Academy of Sciences, Institute of Organic Chemistry; Magyar Tudósok körútja 2. H- 1117 Budapest Hungary
| | - Zoltán Novák
- MTA-ELTE “Lendület” Catalysis and Organic Synthesis Research Group; Institute of Chemistry.; Eötvös Loránd University; Pázmány Péter stny. 1/a Budapest 1117 Hungary
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50
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Tolnai GL, Nilsson UJ, Olofsson B. Efficient O-Functionalization of Carbohydrates with Electrophilic Reagents. Angew Chem Int Ed Engl 2016; 55:11226-30. [PMID: 27528184 PMCID: PMC5113792 DOI: 10.1002/anie.201605999] [Citation(s) in RCA: 73] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/20/2016] [Revised: 07/12/2016] [Indexed: 12/11/2022]
Abstract
Novel methodology for O-functionalization of carbohydrate derivatives has been established using bench-stable and easily prepared iodonium(III) reagents. Both electron-withdrawing and electron-donating aryl groups were introduced under ambient conditions and without precautions to exclude air or moisture. Furthermore, the approach was extended both to full arylation of cyclodextrin, and to trifluoroethylation of carbohydrate derivatives. This is the first general approach to introduce traditionally non-electrophilic groups into any of the OH groups around the sugar backbone. The methodology will be useful both in synthetic organic chemistry and biochemistry, as important functional groups can be incorporated under simple and robust reaction conditions in a fast and efficient manner.
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Affiliation(s)
- Gergely L Tolnai
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden
| | - Ulf J Nilsson
- Centre for Analysis and Synthesis, Department of Chemistry, Lund University, 22100, Lund, Sweden
| | - Berit Olofsson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, 10691, Stockholm, Sweden.
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