1
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Chen X, Liu Y, Zhang S, Li Y, Zhou XY, Feng X, Yu X, Yamamoto Y, Bao M. Palladium-Catalyzed Trifluoroacetylation of Arylboronic Acids Using a Trifluoroacetylation Reagent. Org Lett 2024. [PMID: 39158221 DOI: 10.1021/acs.orglett.4c02689] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/20/2024]
Abstract
A new trifluoroacetylation reagent was developed by using inexpensive and readily available trifluoroacetic anhydride and N-phenyl-4-methylbenzenesulfonamide for the first time. The reaction of (het)aryl boronic acids with the new trifluoroacetylation reagent, N-phenyl-N-tosyltrifluoroacetamide, proceeded smoothly in the presence of a palladium catalyst to provide trifluoromethyl ketones in satisfactory to excellent yields. Various groups, including the synthetically useful functional groups Cl, TMS, and PhCO, were tolerated well under the current reaction conditions. This new trifluoroacetylation reagent can be used in the large-scale synthesis of trifluoromethyl ketones, even at a low palladium catalyst loading.
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Affiliation(s)
- Xia Chen
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
| | - Yining Liu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Sheng Zhang
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yang Li
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiao-Yu Zhou
- School of Chemistry and Materials Engineering, Liupanshui Normal University, Liupanshui 553004, China
| | - Xiujuan Feng
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Xiaoqiang Yu
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
| | - Yoshinori Yamamoto
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
- Department of Chemistry, Graduate School of Science, Tohoku University, Aoba-ku, Sendai 980-8578, Japan
| | - Ming Bao
- State Key Laboratory of Fine Chemicals, Frontier Science Center for Smart Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, China
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2
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Veth L, Windhorst AD, Vugts DJ. Synthesis of 18F-labelled aryl trifluoromethyl ketones with improved molar activity. Chem Commun (Camb) 2024; 60:6801-6804. [PMID: 38869169 DOI: 10.1039/d4cc01776e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/14/2024]
Abstract
A method for the radiosynthesis of 18F-labelled aryl trifluoromethyl ketones starting from widely available Weinreb amides using [18F]fluoroform is presented. The method uses potassium hexamethyldisilazane as base and delivers products in high molar activity (up to 24 GBq μmol-1) and excellent radiochemical conversions. The applicability for PET tracer synthesis is demonstrated by the radiosynthesis of ten (hetero)aryl trifluoromethylketones, bearing electron-withdrawing and -donating substituents including a derivative of bioactive probenecid.
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Affiliation(s)
- Lukas Veth
- Dept. of Radiology & Nuclear Medicine Amsterdam UMC, Location Vrije Universiteit Amsterdam De Boelelaan, 1117, Amsterdam, The Netherlands.
| | - Albert D Windhorst
- Dept. of Radiology & Nuclear Medicine Amsterdam UMC, Location Vrije Universiteit Amsterdam De Boelelaan, 1117, Amsterdam, The Netherlands.
| | - Danielle J Vugts
- Dept. of Radiology & Nuclear Medicine Amsterdam UMC, Location Vrije Universiteit Amsterdam De Boelelaan, 1117, Amsterdam, The Netherlands.
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3
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Bai X, Bai Y, Li Y, Zhao C, Du H, Li Y, Shen C, Zhang M, Chen L. Chemoselective Synthesis of α-Halo- α,α-difluoromethyl Ketones from Trimethyl(phenylethynyl)silane. Org Lett 2024; 26:4508-4513. [PMID: 38770840 DOI: 10.1021/acs.orglett.4c01365] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/22/2024]
Abstract
Here, we describe a novel strategy for chemoselective synthesis of α-halo-α,α-difluoromethyl ketones (-COCF3 and -COClCF2 motifs) from trimethyl(phenylethynyl)silane under catalyst-free and mild conditions. Commercially available Selectfluor or additional NaCl as halogen reagent was employed to complete this transformation, thereby demonstrating the potential synthetic value of this new reaction in organic synthesis.
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Affiliation(s)
- Xiaoyan Bai
- School of Environmental and Chemical Engineering, Wuyi University, Jiangmen 529020, P. R. China
| | - Yuye Bai
- School of Environmental and Chemical Engineering, Wuyi University, Jiangmen 529020, P. R. China
| | - Ya Li
- School of Environmental and Chemical Engineering, Wuyi University, Jiangmen 529020, P. R. China
| | - Cong Zhao
- School of Environmental and Chemical Engineering, Wuyi University, Jiangmen 529020, P. R. China
| | - Hongxuan Du
- School of Environmental and Chemical Engineering, Wuyi University, Jiangmen 529020, P. R. China
| | - Yibiao Li
- School of Environmental and Chemical Engineering, Wuyi University, Jiangmen 529020, P. R. China
| | - Chengshuo Shen
- Department of Chemistry, Zhejiang Sci-Tech University, Xiasha Campus, Hangzhou 310018, P. R. China
| | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, P. R. China
| | - Lu Chen
- School of Environmental and Chemical Engineering, Wuyi University, Jiangmen 529020, P. R. China
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4
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Mourya B, Gadge ST, Bhanage BM. The synthesis of alk-2-ynl Weinreb amides via Pd/Cu-catalysed oxidative carbonylation of terminal alkynes. Org Biomol Chem 2024; 22:3518-3522. [PMID: 38622969 DOI: 10.1039/d4ob00290c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/17/2024]
Abstract
Synthesis of alk-2-ynl-Weinreb amides via Pd-catalyzed oxidative carbonylation of terminal alkynes and N,O-dimethylhydroxylamine hydrochloride at room temperature under low CO/O2 pressure is reported for the first time. This protocol offers tolerance of various functional groups under mild reaction conditions. The protocol incorporates aromatic- and aliphatic-substituted alkynes through a one-step oxidative carbonylative route toward desired alkynyl Weinreb amides, which are of considerable importance as valuable synthetic building blocks.
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Affiliation(s)
- Bharati Mourya
- Department of Chemistry, Institute of Chemical Technology, Mumbai 400019, India.
| | - Sandip T Gadge
- Department of Chemistry, Institute of Chemical Technology, Mumbai 400019, India.
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5
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Jana S, Telu S, Jakobsson JE, Yang BY, Pike VW. Copper(I)-free syntheses of [ 11C/ 18F]trifluoromethyl ketones from alkyl or aryl esters and [ 11C/ 18F]fluoroform. Chem Commun (Camb) 2024; 60:4589-4592. [PMID: 38577766 PMCID: PMC11047764 DOI: 10.1039/d4cc00465e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Herein, we report a copper(I)-free method for labeling the trifluoroacetyl group with positron-emitting carbon-11 (t1/2 = 20.4 min) or fluorine-18 (t1/2 = 109.8 min) as part of our exploration of radiolabeled fluoroforms to access new radiolabeled chemotypes of interest for tracer development. Treatment of alkyl esters and aryl esters, containing electron-donating or electron-withdrawing groups, with [11C/18F]fluoroform in the presence of strong base, gave [11C/18F]trifluoromethyl ketones as novel radiolabeling synthons in moderate to high yields within 15 minutes.
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Affiliation(s)
- Susovan Jana
- Molecular Imaging Branch, NIMH, National Institutes of Health, 10 Center Dr, Bethesda, Maryland 20892, USA.
| | - Sanjay Telu
- Molecular Imaging Branch, NIMH, National Institutes of Health, 10 Center Dr, Bethesda, Maryland 20892, USA.
| | - Jimmy E Jakobsson
- Molecular Imaging Branch, NIMH, National Institutes of Health, 10 Center Dr, Bethesda, Maryland 20892, USA.
| | - Bo Yeun Yang
- Molecular Imaging Branch, NIMH, National Institutes of Health, 10 Center Dr, Bethesda, Maryland 20892, USA.
| | - Victor W Pike
- Molecular Imaging Branch, NIMH, National Institutes of Health, 10 Center Dr, Bethesda, Maryland 20892, USA.
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6
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Popov AV, Kobelevskaya VA, Borodin NI, Zinchenko SV. α,β-Unsaturated CF3-ketones via secondary amine salts-catalyzed aldol condensation of 1,1,1-trufluoroacetone with aromatic and heteroaromatic aldehydes. J Fluor Chem 2023. [DOI: 10.1016/j.jfluchem.2023.110108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/08/2023]
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7
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Said MS, Khonde NS, Kumar P, Gajbhiye JM. Electron-Deficient Fluoroarene-Mediated Synthesis of Trifluoromethyl Ketones from Carboxylic Acids. Org Lett 2023; 25:1094-1098. [PMID: 36757825 DOI: 10.1021/acs.orglett.2c04318] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/10/2023]
Abstract
Fluoroarene-mediated trifluoromethylation of carboxylic acids for the synthesis of trifluoromethyl ketones is disclosed. The fluoroarene activates the acid group and generates the fluoride source in situ for the trifluoromethylation reaction. The present protocol is safe and metal-free, operates under mild reaction conditions, and does not require any external additives to generate trifluoromethyl anion. The current transformation provides good functional group tolerance and also delivers 92% and 88% yields of trifluoromethyl ketones in batch and continuous flow, respectively.
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Affiliation(s)
- Madhukar S Said
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Nilesh S Khonde
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Pradeep Kumar
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Jayant M Gajbhiye
- Division of Organic Chemistry, CSIR-National Chemical Laboratory, Dr. Homi Bhabha Road, Pune 411008, India.,Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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8
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Murai Y, Hashimoto M. Heteroaromatic Diazirines Are Essential Building Blocks for Material and Medicinal Chemistry. Molecules 2023; 28:molecules28031408. [PMID: 36771073 PMCID: PMC9921084 DOI: 10.3390/molecules28031408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2022] [Revised: 01/26/2023] [Accepted: 01/26/2023] [Indexed: 02/05/2023] Open
Abstract
In materials (polymer) science and medicinal chemistry, heteroaromatic derivatives play the role of the central skeleton in development of novel devices and discovery of new drugs. On the other hand, (3-trifluoromethyl)phenyldiazirine (TPD) is a crucial chemical method for understanding biological processes such as ligand-receptor, nucleic acid-protein, lipid-protein, and protein-protein interactions. In particular, use of TPD has increased in recent materials science to create novel electric and polymer devices with comparative ease and reduced costs. Therefore, a combination of heteroaromatics and (3-trifluoromethyl)diazirine is a promising option for creating better materials and elucidating the unknown mechanisms of action of bioactive heteroaromatic compounds. In this review, a comprehensive synthesis of (3-trifluoromethyl)diazirine-substituted heteroaromatics is described.
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Affiliation(s)
- Yuta Murai
- Graduate School of Life Science, Hokkaido University, Kita 21, Nishi 11, Kita-ku, Sapporo 001-0021, Japan
- Faculty of Advanced Life Science, Hokkaido University, Kita 21, Nishi 11, Kita-ku, Sapporo 001-0021, Japan
- Correspondence: (Y.M.); (M.H.); Tel.: +81-11-706-9030 (Y.M.); +81-11-706-3849 (M.H.)
| | - Makoto Hashimoto
- Division of Applied Bioscience, Graduate School of Agriculture, Hokkaido University, Kita 9, Nishi 9, Kita-ku, Sapporo 060-8589, Japan
- Correspondence: (Y.M.); (M.H.); Tel.: +81-11-706-9030 (Y.M.); +81-11-706-3849 (M.H.)
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9
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Fujihira Y, Iwasaki H, Sumii Y, Adachi H, Kagawa T, Shibata N. Continuous-Flow Synthesis of Perfluoroalkyl Ketones via Perfluoroalkylation of Esters Using HFC-23 and HFC-125 under a KHMDS–Triglyme System. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2022. [DOI: 10.1246/bcsj.20220162] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Yamato Fujihira
- Department of Engineering, Life Science and Applied Chemistry Program, Nagoya Institute of Technology, Gokiso-cho, Showa-Ku, Nagoya 466-8555, Japan
| | - Hiroto Iwasaki
- Department of Engineering, Life Science and Applied Chemistry Program, Nagoya Institute of Technology, Gokiso-cho, Showa-Ku, Nagoya 466-8555, Japan
| | - Yuji Sumii
- Department of Engineering, Life Science and Applied Chemistry Program, Nagoya Institute of Technology, Gokiso-cho, Showa-Ku, Nagoya 466-8555, Japan
| | - Hiroaki Adachi
- Tosoh Finechem Corporation, 4988, Kaiseicho, Shunan, 746-0006, Japan
| | - Takumi Kagawa
- Tosoh Finechem Corporation, 4988, Kaiseicho, Shunan, 746-0006, Japan
| | - Norio Shibata
- Department of Engineering, Life Science and Applied Chemistry Program, Nagoya Institute of Technology, Gokiso-cho, Showa-Ku, Nagoya 466-8555, Japan
- Department of Nanopharmaceutical Sciences, Nagoya Institute of Technology, Gokiso-cho, Showa-Ku, Nagoya 466-8555, Japan
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10
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Mild and efficient one-pot synthesis of (E)-styrylperfluoroalkyl ketone from styrene. RESULTS IN CHEMISTRY 2022. [DOI: 10.1016/j.rechem.2021.100260] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
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11
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Panda S, Poudel TN, Hegde P, Aldrich CC. Innovative Strategies for the Construction of Diverse 1'-Modified C-Nucleoside Derivatives. J Org Chem 2021; 86:16625-16640. [PMID: 34756029 DOI: 10.1021/acs.joc.1c01920] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Modified C-nucleosides have proven to be enormously successful as chemical probes to understand fundamental biological processes and as small-molecule drugs for cancer and infectious diseases. Historically, the modification of the glycosyl unit has focused on the 2'-, 3'-, and 4'-positions as well as the ribofuranosyl ring oxygen. By contrast, the 1'-position has rarely been studied due to the labile nature of the anomeric position. However, the improved chemical stability of C-nucleosides allows the modification of the 1'-position with substituents not found in conventional N-nucleosides. Herein, we disclose new chemistry for the installation of diverse substituents at the 1'-position of C-nucleosides, including alkyl, alkenyl, difluoromethyl, and fluoromethyl substituents, using the 4-amino-7-(1'-hydroxy-d-ribofuranosyl)pyrrolo[2,1-f][1,2,4]triazine scaffold as a representative purine nucleoside mimetic.
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Affiliation(s)
- Subhankar Panda
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Tej Narayan Poudel
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Pooja Hegde
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
| | - Courtney C Aldrich
- Department of Medicinal Chemistry, University of Minnesota, Minneapolis, Minnesota 55455, United States
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12
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Ispizua-Rodriguez X, Munoz SB, Krishnamurti V, Mathew T, Prakash GKS. Direct Synthesis of Tri-/Difluoromethyl Ketones from Carboxylic Acids by Cross-Coupling with Acyloxyphosphonium Ions. Chemistry 2021; 27:15908-15913. [PMID: 34469605 DOI: 10.1002/chem.202102854] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2021] [Indexed: 11/09/2022]
Abstract
A simple and straightforward approach to the synthesis of trifluoromethyl and difluoromethyl ketones from widely available carboxylic acids is disclosed. The transformation utilizes an acyloxyphosphonium ion as the active electrophile, conveniently generated in situ from the carboxylic acid substrate by using commodity chemicals. The utility of the reaction system is exemplified by its chemoselectivity, with tolerance to a variety of important functional groups. The late-stage functionalization of carboxylic acid active pharmaceutical ingredients and pharmaceutically relevant compounds is also discussed.
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Affiliation(s)
- Xanath Ispizua-Rodriguez
- Department of Chemistry, Loker Hydrocarbon Research Institute, University of Southern California, 837 Bloom Walk, Los Angeles, CA-90089-1661, USA
| | - Socrates B Munoz
- Department of Chemistry, Kansas State University, 322 CBC Bldg, Manhattan, KS66506-0401, USA
| | - Vinayak Krishnamurti
- Department of Chemistry, Loker Hydrocarbon Research Institute, University of Southern California, 837 Bloom Walk, Los Angeles, CA-90089-1661, USA
| | - Thomas Mathew
- Department of Chemistry, Loker Hydrocarbon Research Institute, University of Southern California, 837 Bloom Walk, Los Angeles, CA-90089-1661, USA
| | - G K S Prakash
- Department of Chemistry, Loker Hydrocarbon Research Institute, University of Southern California, 837 Bloom Walk, Los Angeles, CA-90089-1661, USA
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13
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Liu X, Liu L, Huang T, Zhang J, Tang Z, Li C, Chen T. Trifluoromethylation of Benzoic Acids: An Access to Aryl Trifluoromethyl Ketones. Org Lett 2021; 23:4930-4934. [PMID: 34109800 DOI: 10.1021/acs.orglett.1c01720] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
The trifluoromethylation of benzoic acids with TMSCF3 was achieved through nucleophilic substitution with the use of anhydrides as an in situ activating reagent. Under the reaction conditions, a wide range of carboxylic acids including the bioactive ones worked well, thus providing a facile and efficient method for preparing aryl trifluoromethyl ketones from the readily available starting materials.
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Affiliation(s)
- Xue Liu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Long Liu
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Tianzeng Huang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Jingjing Zhang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Zhi Tang
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Chunya Li
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
| | - Tieqiao Chen
- Key Laboratory of Ministry of Education for Advanced Materials in Tropical Island Resources, Hainan Provincial Key Lab of Fine Chem, Hainan Provincial Fine Chemical Engineering Research Center, Hainan University, Haikou 570228, China
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14
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Muzalevskiy VM, Sizova ZA, Panyushkin VV, Chertkov VA, Khrustalev VN, Nenajdenko VG. α,β-Disubstituted CF 3-Enones as a Trifluoromethyl Building Block: Regioselective Preparation of Totally Substituted 3-CF 3-Pyrazoles. J Org Chem 2021; 86:2385-2405. [PMID: 33423495 DOI: 10.1021/acs.joc.0c02516] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Abstract
An efficient pathway toward a novel class of trifluoromethyl building blocks was elaborated. The reaction of α-CF3-enamines with arylaldehydes resulted in direct synthesis of α,β-diaryl-CF3-enones isolated in up to 93% yield as E-isomers. The possible reaction mechanism was proposed using the Zimmerman-Traxler model. The reaction of α,β-diaryl-CF3-enones with hydrazines opens a novel pathway to trifluoromethylated pyrazolines. Oxidation of pyrazolines with DDQ opened access to totally regioselective preparation of 3-CF3-pyrazoles isolated in high yield. Using this strategy, 4-arylated derivatives of known drugs Celebrex, Mavacoxib, and SC-560 can be synthesized.
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Affiliation(s)
- Vasiliy M Muzalevskiy
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Zoia A Sizova
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Vasiliy V Panyushkin
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Vyacheslav A Chertkov
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
| | - Victor N Khrustalev
- Peoples' Friendship University of Russia, Moscow 117198, Russia.,N. D. Zelinsky Institute of Organic Chemistry of RAS, 47 Leninsky Prospect, Moscow 119991, Russia
| | - Valentine G Nenajdenko
- Department of Chemistry, M. V. Lomonosov Moscow State University, Leninskie Gory 1, Moscow 119991, Russia
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15
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Dong X, Ma P, Zhang T, Jalani HB, Li G, Lu H. Iridium-Catalyzed C-H Amination of Weinreb Amides: A Facile Pathway toward Anilines and Quinazolin-2,4-diones. J Org Chem 2020; 85:13096-13107. [PMID: 32969226 DOI: 10.1021/acs.joc.0c01789] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
C-H amination of arenes directed by weakly coordinating Weinreb amides has been achieved with an iridium catalyst and 2,2,2-trichloroethoxycarbonyl (Troc) azide as an aminating agent, providing a robust method of producing synthetic useful ortho-TrocNH aryl Weinreb amides. Taking advantage of the reactivity of Weinreb amide and Troc groups in the amination products, selective hydrolysis was achieved as an attractive process for the synthesis of ortho-NH2 aryl Weinreb amides, which are the building blocks useful in the synthesis of bioactive compounds, and cascade aminocyclization with primary amines was successful and provided an efficient pathway for the construction of quinazolin-2,4-diones, which are present in various alkaloids and natural products.
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Affiliation(s)
- Xunqing Dong
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Panpan Ma
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Tao Zhang
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
| | - Hitesh B Jalani
- Department for Management of Science and Technology Development, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam.,Faculty of Applied Sciences, Ton Duc Thang University, Ho Chi Minh City 758307, Vietnam
| | - Guigen Li
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China.,Department of Chemistry and Biochemistry, Texas Tech University, Lubbock, Texas 79409-1061, United States
| | - Hongjian Lu
- Institute of Chemistry and BioMedical Sciences, Jiangsu Key Laboratory of Advanced Organic Materials, School of Chemistry and Chemical Engineering, Nanjing University, Nanjing 210093, China
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16
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Li Y, Wang Z, Zhu T, Qi H, Xiong L, Liu F. Nucleophilic fluoroalkylation as an efficient avenue to achieve fluorinated polyimide monomers containing
Csp
3
‐R
f
from carbonyl compounds. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200208] [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)
- Yongjian Li
- College of ChemistryNanchang University Nanchang China
| | - Zhongkai Wang
- College of ChemistryNanchang University Nanchang China
| | - Tangsong Zhu
- College of ChemistryNanchang University Nanchang China
| | - Haixia Qi
- College of ChemistryNanchang University Nanchang China
| | - Lei Xiong
- College of ChemistryNanchang University Nanchang China
| | - Feng Liu
- College of ChemistryNanchang University Nanchang China
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17
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Ben Jamaa A, Latrache M, Riguet E, Grellepois F. cis-Dihydroxylated α-Trifluoromethylated N, O-Acetal from l-Tartaric Acid: Synthesis of Tetrasubstituted Stereocenter via Diastereoselective Pictet-Spengler Cyclization of N-Acyliminium Ions. J Org Chem 2020; 85:9585-9598. [PMID: 32790358 DOI: 10.1021/acs.joc.0c00801] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The synthesis of cyclic, chiral α-trifluoromethylated N,O-acetals having a protected cis-diol moiety has been readily achieved in two steps from a known bis-Weinreb amide derived from l-tartaric acid. The reaction of O-acetyl analogues of these N,O-acetals with triflic acid in 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) at 0 °C generated in situ the corresponding electrophilic α-trifluoromethyl N-acyliminium ions that undergo Pictet-Spengler-type cyclizations. After only 10 min of reaction, the original enantiopure aza-tricyclic scaffolds bearing a trifluoromethyl substituent at the bridgehead position were obtained with diastereoselectivities ranging from 75:25 to 97:3.
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Affiliation(s)
- Abdelkhalek Ben Jamaa
- Université de Reims Champagne-Ardenne, CNRS, Institut de Chimie Moléculaire de Reims UMR 7312, 51097 Reims, France
| | - Mohammed Latrache
- Université de Reims Champagne-Ardenne, CNRS, Institut de Chimie Moléculaire de Reims UMR 7312, 51097 Reims, France
| | - Emmanuel Riguet
- Université de Reims Champagne-Ardenne, CNRS, Institut de Chimie Moléculaire de Reims UMR 7312, 51097 Reims, France
| | - Fabienne Grellepois
- Université de Reims Champagne-Ardenne, CNRS, Institut de Chimie Moléculaire de Reims UMR 7312, 51097 Reims, France
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18
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Johansen MB, Gedde OR, Mayer TS, Skrydstrup T. Access to Aryl and Heteroaryl Trifluoromethyl Ketones from Aryl Bromides and Fluorosulfates with Stoichiometric CO. Org Lett 2020; 22:4068-4072. [PMID: 32391697 DOI: 10.1021/acs.orglett.0c01117] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
We report a sequential one-pot preparation of aromatic trifluoromethyl ketones starting from readily accessible aryl bromides and fluorosulfates, the latter easily prepared from the corresponding phenols. The methodology utilizes low pressure carbon monoxide generated ex situ from COgen to generate Weinreb amides as reactive intermediates that undergo monotrifluoromethylation affording the corresponding aromatic trifluoromethyl ketones (TFMKs) in good yields. The stoichiometric use of CO enables the possibility for accessing 13C-isotopically labeled TFMK by switching to the use of 13COgen.
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Affiliation(s)
- Martin B Johansen
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark.,Department of Engineering, Aarhus University, Åbogade 40, DK-8200 Aarhus N, Denmark
| | - Oliver R Gedde
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Thea S Mayer
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), Interdisciplinary Nanoscience Center (iNANO), and Department of Chemistry, Aarhus University, Gustav Wieds Vej 14, DK-8000 Aarhus C, Denmark
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19
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Domino K, Johansen MB, Daasbjerg K, Skrydstrup T. Stoichiometric Studies on the Carbonylative Trifluoromethylation of Aryl Pd(II) Complexes using TMSCF3 as the Trifluoromethyl Source. Organometallics 2020. [DOI: 10.1021/acs.organomet.9b00849] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Katrine Domino
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry, and the Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Martin B. Johansen
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry, and the Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
- Department of Engineering, Aarhus University, Åbogade 42, 8200 Aarhus N, Denmark
| | - Kim Daasbjerg
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry, and the Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
| | - Troels Skrydstrup
- Carbon Dioxide Activation Center (CADIAC), Department of Chemistry, and the Interdisciplinary Nanoscience Center (iNANO), Aarhus University, Gustav Wieds Vej 14, 8000 Aarhus C, Denmark
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20
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Wilkinson IVL, Perkins KJ, Dugdale H, Moir L, Vuorinen A, Chatzopoulou M, Squire SE, Monecke S, Lomow A, Geese M, Charles PD, Burch P, Tinsley JM, Wynne GM, Davies SG, Wilson FX, Rastinejad F, Mohammed S, Davies KE, Russell AJ. Chemical Proteomics and Phenotypic Profiling Identifies the Aryl Hydrocarbon Receptor as a Molecular Target of the Utrophin Modulator Ezutromid. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.201912392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Isabel V. L. Wilkinson
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Kelly J. Perkins
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene Function South Parks Road Oxford OX1 3PT UK
| | - Hannah Dugdale
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene Function South Parks Road Oxford OX1 3PT UK
| | - Lee Moir
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene Function South Parks Road Oxford OX1 3PT UK
| | - Aini Vuorinen
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Maria Chatzopoulou
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Sarah E. Squire
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene Function South Parks Road Oxford OX1 3PT UK
| | - Sebastian Monecke
- Evotec International GmbHManfred Eigen Campus Essener Bogen 7 22419 Hamburg Germany
| | - Alexander Lomow
- Evotec International GmbHManfred Eigen Campus Essener Bogen 7 22419 Hamburg Germany
| | - Marcus Geese
- Evotec International GmbHManfred Eigen Campus Essener Bogen 7 22419 Hamburg Germany
| | - Philip D. Charles
- Department of BiochemistryUniversity of Oxford South Parks Rd Oxford OX1 3QU UK
- Target Discovery InstituteUniversity of OxfordOld Road Campus Roosevelt Drive Oxford OX3 7FZ UK
| | - Peter Burch
- Summit Therapeutics plc. 136a Eastern Avenue, Milton Park Abingdon Oxfordshire OX14 4SB UK
| | - Jonathan M. Tinsley
- Summit Therapeutics plc. 136a Eastern Avenue, Milton Park Abingdon Oxfordshire OX14 4SB UK
| | - Graham M. Wynne
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Stephen G. Davies
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
| | - Francis X. Wilson
- Summit Therapeutics plc. 136a Eastern Avenue, Milton Park Abingdon Oxfordshire OX14 4SB UK
| | - Fraydoon Rastinejad
- Target Discovery InstituteUniversity of OxfordOld Road Campus Roosevelt Drive Oxford OX3 7FZ UK
| | - Shabaz Mohammed
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
- Department of BiochemistryUniversity of Oxford South Parks Rd Oxford OX1 3QU UK
| | - Kay E. Davies
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene Function South Parks Road Oxford OX1 3PT UK
| | - Angela J. Russell
- Department of ChemistryUniversity of OxfordChemistry Research Laboratory Mansfield Road Oxford OX1 3TA UK
- Department of PharmacologyUniversity of Oxford Mansfield Road Oxford OX1 3PQ UK
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21
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Wilkinson IVL, Perkins KJ, Dugdale H, Moir L, Vuorinen A, Chatzopoulou M, Squire SE, Monecke S, Lomow A, Geese M, Charles PD, Burch P, Tinsley JM, Wynne GM, Davies SG, Wilson FX, Rastinejad F, Mohammed S, Davies KE, Russell AJ. Chemical Proteomics and Phenotypic Profiling Identifies the Aryl Hydrocarbon Receptor as a Molecular Target of the Utrophin Modulator Ezutromid. Angew Chem Int Ed Engl 2020; 59:2420-2428. [PMID: 31755636 PMCID: PMC7003794 DOI: 10.1002/anie.201912392] [Citation(s) in RCA: 28] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Revised: 11/13/2019] [Indexed: 12/20/2022]
Abstract
Duchenne muscular dystrophy (DMD) is a fatal muscle-wasting disease arising from mutations in the dystrophin gene. Upregulation of utrophin to compensate for the missing dystrophin offers a potential therapy independent of patient genotype. The first-in-class utrophin modulator ezutromid/SMT C1100 was developed from a phenotypic screen through to a Phase 2 clinical trial. Promising efficacy and evidence of target engagement was observed in DMD patients after 24 weeks of treatment, however trial endpoints were not met after 48 weeks. The objective of this study was to understand the mechanism of action of ezutromid which could explain the lack of sustained efficacy and help development of new generations of utrophin modulators. Using chemical proteomics and phenotypic profiling we show that the aryl hydrocarbon receptor (AhR) is a target of ezutromid. Several lines of evidence demonstrate that ezutromid binds AhR with an apparent KD of 50 nm and behaves as an AhR antagonist. Furthermore, other reported AhR antagonists also upregulate utrophin, showing that this pathway, which is currently being explored in other clinical applications including oncology and rheumatoid arthritis, could also be exploited in future DMD therapies.
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Affiliation(s)
- Isabel V. L. Wilkinson
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Kelly J. Perkins
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene FunctionSouth Parks RoadOxfordOX1 3PTUK
| | - Hannah Dugdale
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene FunctionSouth Parks RoadOxfordOX1 3PTUK
| | - Lee Moir
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene FunctionSouth Parks RoadOxfordOX1 3PTUK
| | - Aini Vuorinen
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Maria Chatzopoulou
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Sarah E. Squire
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene FunctionSouth Parks RoadOxfordOX1 3PTUK
| | - Sebastian Monecke
- Evotec International GmbHManfred Eigen CampusEssener Bogen 722419HamburgGermany
| | - Alexander Lomow
- Evotec International GmbHManfred Eigen CampusEssener Bogen 722419HamburgGermany
| | - Marcus Geese
- Evotec International GmbHManfred Eigen CampusEssener Bogen 722419HamburgGermany
| | - Philip D. Charles
- Department of BiochemistryUniversity of OxfordSouth Parks RdOxfordOX1 3QUUK
- Target Discovery InstituteUniversity of OxfordOld Road CampusRoosevelt DriveOxfordOX3 7FZUK
| | - Peter Burch
- Summit Therapeutics plc.136a Eastern Avenue, Milton ParkAbingdonOxfordshireOX14 4SBUK
| | - Jonathan M. Tinsley
- Summit Therapeutics plc.136a Eastern Avenue, Milton ParkAbingdonOxfordshireOX14 4SBUK
| | - Graham M. Wynne
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Stephen G. Davies
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
| | - Francis X. Wilson
- Summit Therapeutics plc.136a Eastern Avenue, Milton ParkAbingdonOxfordshireOX14 4SBUK
| | - Fraydoon Rastinejad
- Target Discovery InstituteUniversity of OxfordOld Road CampusRoosevelt DriveOxfordOX3 7FZUK
| | - Shabaz Mohammed
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
- Department of BiochemistryUniversity of OxfordSouth Parks RdOxfordOX1 3QUUK
| | - Kay E. Davies
- Department of Physiology, Anatomy and GeneticsUniversity of OxfordSir Henry Wellcome Building of Gene FunctionSouth Parks RoadOxfordOX1 3PTUK
| | - Angela J. Russell
- Department of ChemistryUniversity of OxfordChemistry Research LaboratoryMansfield RoadOxfordOX1 3TAUK
- Department of PharmacologyUniversity of OxfordMansfield RoadOxfordOX1 3PQUK
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22
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Synthesis of Leu-enkephalin peptidomimetics containing trifluoromethylalkenes as amide isopolar mimics. J Fluor Chem 2019; 218:90-98. [DOI: 10.1016/j.jfluchem.2018.12.005] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Baumeister S, Schepmann D, Wünsch B. Synthesis and receptor binding of thiophene bioisosteres of potent GluN2B ligands with a benzo[7]annulene-scaffold. MEDCHEMCOMM 2019; 10:315-325. [PMID: 30881618 DOI: 10.1039/c8md00545a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 01/04/2019] [Indexed: 11/21/2022]
Abstract
The involvement of NMDA receptors containing the GluN2B subunit in neurodegenerative disorders including Alzheimer's and Parkinson's disease renders this NMDA receptor subtype an interesting pharmacological target. The aim of this study was the bioisosteric replacement of benzene, methoxybenzene and aniline moieties of known potent GluN2B selective NMDA receptor antagonists by a thiophene ring. In a nine-step synthesis starting from commercially available propionic acid 9 the thiophene derivative 7a was obtained as a bioisostere of the potent GluN2B ligands cis-3 and trans-3. [7]Annuleno[b]thiophene 8a without a benzylic OH moiety was prepared in a six-step synthesis starting from carboxylic acid 18. 8a represents a bioisostere of potent GluN2B ligands 4 and 5. [7]Annulenothiophene 8a without a benzylic OH moiety reveals approx. 8-fold higher GluN2B affinity (K i = 26 nM) than the analogous thiophene derivative 7a with a benzylic OH moiety (K i = 204 nM). Both thiophene bioisosteres show a slight preference for GluN2B receptors over both σ receptors. The data indicate that the bioisosteric replacement of benzene or substituted benzene rings by a thiophene ring is well tolerated by the NMDA receptor. Furthermore, the benzylic OH moiety seems not to be essential for high GluN2B affinity.
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Affiliation(s)
- Sören Baumeister
- Institut für Pharmazeutische und Medizinische Chemie der Universität Münster , Corrensstraße 48 , D-48149 Münster , Germany . ; ; Tel: +49 251 83 33311
| | - Dirk Schepmann
- Institut für Pharmazeutische und Medizinische Chemie der Universität Münster , Corrensstraße 48 , D-48149 Münster , Germany . ; ; Tel: +49 251 83 33311
| | - Bernhard Wünsch
- Institut für Pharmazeutische und Medizinische Chemie der Universität Münster , Corrensstraße 48 , D-48149 Münster , Germany . ; ; Tel: +49 251 83 33311.,Cells-in-Motion Cluster of Excellence (EXC 1003 - CiM) , Westfälische Wilhelms-Universität Münster , Germany
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24
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Selg C, Kraft FB, Welcke L, Zeitler K. A Catalytic Strategy for α,ω‐Functionalization: NHC‐Mediated Fragmentation/Umpolung Cascades to Access Hydroxytrifluoromethyl Ynones and Allenones. ChemCatChem 2018. [DOI: 10.1002/cctc.201801454] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Christoph Selg
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Fabian B. Kraft
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Linda Welcke
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
| | - Kirsten Zeitler
- Institut für Organische ChemieUniversität Leipzig Johannisallee 29 04103 Leipzig Germany
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25
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Zhang P, Shen H, Zhu L, Cao W, Li C. Radical C(sp2)–H Trifluoromethylation of Aldehydes in Aqueous Solution. Org Lett 2018; 20:7062-7065. [DOI: 10.1021/acs.orglett.8b03012] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Pei Zhang
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Haigen Shen
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Lin Zhu
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Weiguo Cao
- Department of Chemistry, Shanghai University, 99 Shangda Road, Shanghai 200444, China
| | - Chaozhong Li
- Key Laboratory of Organofluorine Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
- School of Materials and Chemical Engineering, Ningbo University of Technology, No. 201 Fenghua Road, Ningbo 315211, China
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26
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Miller SA, van Beek B, Hamlin TA, Bickelhaupt FM, Leadbeater NE. A methodology for the photocatalyzed radical trifluoromethylation of indoles: A combined experimental and computational study. J Fluor Chem 2018. [DOI: 10.1016/j.jfluchem.2018.08.005] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
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27
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28
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Chen H, Ye JL, Huang PQ. Chemoselective direct reductive trifluoromethylation of amides: a flexible access to functionalized α-trifluoromethylamines. Org Chem Front 2018. [DOI: 10.1039/c7qo01031a] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A one-pot method is reported for the direct transformation of secondary amides to α-trifluoromethylamines.
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Affiliation(s)
- Hang Chen
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Jian-Liang Ye
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
| | - Pei-Qiang Huang
- Department of Chemistry
- Fujian Provincial Key Laboratory of Chemical Biology
- iChEM (Collaborative Innovation Center of Chemistry for Energy Materials)
- College of Chemistry and Chemical Engineering
- Xiamen University
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29
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Wilson CR, Gessner RK, Moosa A, Seldon R, Warner DF, Mizrahi V, Soares de Melo C, Simelane SB, Nchinda A, Abay E, Taylor D, Njoroge M, Brunschwig C, Lawrence N, Boshoff HIM, Barry CE, Sirgel FA, van Helden P, Harris CJ, Gordon R, Ghidelli-Disse S, Pflaumer H, Boesche M, Drewes G, Sanz O, Santos G, Rebollo-Lopez MJ, Urones B, Selenski C, Lafuente-Monasterio MJ, Axtman M, Lelièvre J, Ballell L, Mueller R, Street LJ, Ghorpade SR, Chibale K. Novel Antitubercular 6-Dialkylaminopyrimidine Carboxamides from Phenotypic Whole-Cell High Throughput Screening of a SoftFocus Library: Structure-Activity Relationship and Target Identification Studies. J Med Chem 2017; 60:10118-10134. [PMID: 29148755 PMCID: PMC5748279 DOI: 10.1021/acs.jmedchem.7b01347] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
![]()
A BioFocus
DPI SoftFocus library of ∼35 000 compounds was screened
against Mycobacterium tuberculosis (Mtb) in order
to identify novel hits with antitubercular activity. The hits were
evaluated in biology triage assays to exclude compounds suggested to function via frequently encountered promiscuous mechanisms of action including inhibition of the QcrB subunit of the cytochrome bc1 complex, disruption of cell–wall homeostasis, and DNA damage. Among the hits that passed this screening cascade, a 6-dialkylaminopyrimidine carboxamide series was prioritized for hit to lead optimization. Compounds from this series were active against clinical Mtb strains, while no cross-resistance to conventional antituberculosis drugs was observed. This suggested a novel mechanism of action, which was confirmed by chemoproteomic analysis leading to the identification of BCG_3193 and BCG_3827 as putative targets of the series with unknown function. Initial structure–activity relationship studies have resulted in compounds with moderate to potent antitubercular activity and improved physicochemical properties.
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Affiliation(s)
- Colin R Wilson
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa
| | - Richard K Gessner
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa
| | - Atica Moosa
- SAMRC/NHLS/UCT Molecular Mycobacteriology Research Unit, Department of Pathology, University of Cape Town , Rondebosch 7701, South Africa
| | - Ronnett Seldon
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa.,Institute of Infectious Disease and Molecular Medicine, University of Cape Town , Rondebosch 7701, South Africa
| | - Digby F Warner
- SAMRC/NHLS/UCT Molecular Mycobacteriology Research Unit, Department of Pathology, University of Cape Town , Rondebosch 7701, South Africa.,Institute of Infectious Disease and Molecular Medicine, University of Cape Town , Rondebosch 7701, South Africa
| | - Valerie Mizrahi
- SAMRC/NHLS/UCT Molecular Mycobacteriology Research Unit, Department of Pathology, University of Cape Town , Rondebosch 7701, South Africa.,Institute of Infectious Disease and Molecular Medicine, University of Cape Town , Rondebosch 7701, South Africa
| | - Candice Soares de Melo
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa
| | - Sandile B Simelane
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa
| | - Aloysius Nchinda
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa
| | - Efrem Abay
- Department of Medicine, Division of Clinical Pharmacology, Drug Discovery and Development Centre (H3D), University of Cape Town , Observatory, 7925, South Africa
| | - Dale Taylor
- Department of Medicine, Division of Clinical Pharmacology, Drug Discovery and Development Centre (H3D), University of Cape Town , Observatory, 7925, South Africa
| | - Mathew Njoroge
- Department of Medicine, Division of Clinical Pharmacology, Drug Discovery and Development Centre (H3D), University of Cape Town , Observatory, 7925, South Africa
| | - Christel Brunschwig
- Department of Medicine, Division of Clinical Pharmacology, Drug Discovery and Development Centre (H3D), University of Cape Town , Observatory, 7925, South Africa
| | - Nina Lawrence
- Department of Medicine, Division of Clinical Pharmacology, Drug Discovery and Development Centre (H3D), University of Cape Town , Observatory, 7925, South Africa
| | - Helena I M Boshoff
- Tuberculosis Research Section, Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health , Bethesda, Maryland 20892, United States
| | - Clifton E Barry
- Tuberculosis Research Section, Laboratory of Clinical Infectious Diseases, National Institute of Allergy and Infectious Diseases, National Institutes of Health , Bethesda, Maryland 20892, United States
| | - Frederick A Sirgel
- DST/NRF Centre of Excellence for Biomedical TB Research, SA MRC Centre for TB Research, Division of Molecular Biology and Human Genetics, Faculty of Health Sciences, Stellenbosch University , 7505 Tygerberg, South Africa
| | - Paul van Helden
- DST/NRF Centre of Excellence for Biomedical TB Research, SA MRC Centre for TB Research, Division of Molecular Biology and Human Genetics, Faculty of Health Sciences, Stellenbosch University , 7505 Tygerberg, South Africa
| | - C John Harris
- CJH Consultants , Ford Cottage, South Weirs, Brockenhurst, Hampshire SO42 7UQ, U.K
| | - Richard Gordon
- Strategic Health Innovation Partnerships (SHIP), South African Medical Research Council , Parow Valley, Cape Town, South Africa
| | - Sonja Ghidelli-Disse
- Cellzome GmbH, Molecular Discovery Research, GlaxoSmithKline , Meyerhofstrasse 1, Heidelberg 69117, Germany
| | - Hannah Pflaumer
- Cellzome GmbH, Molecular Discovery Research, GlaxoSmithKline , Meyerhofstrasse 1, Heidelberg 69117, Germany
| | - Markus Boesche
- Cellzome GmbH, Molecular Discovery Research, GlaxoSmithKline , Meyerhofstrasse 1, Heidelberg 69117, Germany
| | - Gerard Drewes
- Cellzome GmbH, Molecular Discovery Research, GlaxoSmithKline , Meyerhofstrasse 1, Heidelberg 69117, Germany
| | - Olalla Sanz
- Diseases of the Developing World, GlaxoSmithKline , Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Gracia Santos
- Diseases of the Developing World, GlaxoSmithKline , Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Maria José Rebollo-Lopez
- Diseases of the Developing World, GlaxoSmithKline , Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Beatriz Urones
- Diseases of the Developing World, GlaxoSmithKline , Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Carolyn Selenski
- Diseases of the Developing World, GlaxoSmithKline , Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | | | - Matthew Axtman
- Diseases of the Developing World, GlaxoSmithKline , Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Joël Lelièvre
- Diseases of the Developing World, GlaxoSmithKline , Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Lluis Ballell
- Diseases of the Developing World, GlaxoSmithKline , Calle Severo Ochoa 2, 28760 Tres Cantos, Madrid, Spain
| | - Rudolf Mueller
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa
| | - Leslie J Street
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa
| | - Sandeep R Ghorpade
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa
| | - Kelly Chibale
- Department of Chemistry, Drug Discovery and Development Centre (H3D), University of Cape Town , Rondebosch 7701, South Africa.,Institute of Infectious Disease and Molecular Medicine, University of Cape Town , Rondebosch 7701, South Africa.,South African Medical Research Council Drug Discovery and Development Research Unit, Department of Chemistry, University of Cape Town , Rondebosch 7701, South Africa
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30
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Phetcharawetch J, Betterley NM, Soorukram D, Pohmakotr M, Reutrakul V, Kuhakarn C. Synthesis of Difluoromethyl Ketones from Weinreb Amides, and Tandem Addition/Cyclization of o
-Alkynylaryl Weinreb Amides. European J Org Chem 2017. [DOI: 10.1002/ejoc.201701322] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Jongkonporn Phetcharawetch
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC); Faculty of Science; Mahidol University; Rama VI Road 10400 Bangkok Thailand
| | - Nolan M. Betterley
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC); Faculty of Science; Mahidol University; Rama VI Road 10400 Bangkok Thailand
| | - Darunee Soorukram
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC); Faculty of Science; Mahidol University; Rama VI Road 10400 Bangkok Thailand
| | - Manat Pohmakotr
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC); Faculty of Science; Mahidol University; Rama VI Road 10400 Bangkok Thailand
| | - Vichai Reutrakul
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC); Faculty of Science; Mahidol University; Rama VI Road 10400 Bangkok Thailand
| | - Chutima Kuhakarn
- Department of Chemistry and Center of Excellence for Innovation in Chemistry (PERCH-CIC); Faculty of Science; Mahidol University; Rama VI Road 10400 Bangkok Thailand
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31
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Pandey VK, Anbarasan P. One-Pot Trifluoromethylative Functionalization of Amides: Synthesis of Trifluoromethylated Bis(indolyl)arylmethanes and Triarylmethanes. J Org Chem 2017; 82:12328-12336. [DOI: 10.1021/acs.joc.7b02161] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Vinay Kumar Pandey
- Department of Chemistry, Indian Institute of Technology Madras, Chennai - 600036, India
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai - 600036, India
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32
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Judd TC, Brown DB. Access to substituted trifluoromethyl ketones using the versatile synthetic intermediate ( E )-1,1-dimethyl-2-(1,1,1-trifluoropropan-2-ylidene)hydrazine. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.10.022] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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33
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Das R, Kapur M. Palladium-Catalyzed, ortho-Selective C-H Halogenation of Benzyl Nitriles, Aryl Weinreb Amides, and Anilides. J Org Chem 2017; 82:1114-1126. [PMID: 28029050 DOI: 10.1021/acs.joc.6b02731] [Citation(s) in RCA: 50] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A palladium-catalyzed, ortho-selective C-H halogenation methodology is reported herein. The highlight of the work is the highly selective C(sp2)-H functionalization of benzyl nitriles in the presence of activated C(sp3)-H bond, which results in good yields of the halogenated products with excellent regioselectivity. Along with benzyl nitriles, aryl Weinreb amides and anilides have been evaluated for the transformation using aprotic conditions. Mechanistic studies yield interesting aspects with respect to the pathway of the reaction and the directing group abilities.
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Affiliation(s)
- Riki Das
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) , Bhopal, Madhya Pradesh 462 066, India
| | - Manmohan Kapur
- Department of Chemistry, Indian Institute of Science Education and Research (IISER) , Bhopal, Madhya Pradesh 462 066, India
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34
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Castoldi L, Holzer W, Langer T, Pace V. Evidence and isolation of tetrahedral intermediates formed upon the addition of lithium carbenoids to Weinreb amides and N-acylpyrroles. Chem Commun (Camb) 2017; 53:9498-9501. [DOI: 10.1039/c7cc05215d] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
Trapping tetrahedral intermediates from Weinreb amides andN-acylpyrroles.
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Affiliation(s)
- Laura Castoldi
- University of Vienna – Department of Pharmaceutical Chemistry
- Vienna
- Austria
| | - Wolfgang Holzer
- University of Vienna – Department of Pharmaceutical Chemistry
- Vienna
- Austria
| | - Thierry Langer
- University of Vienna – Department of Pharmaceutical Chemistry
- Vienna
- Austria
| | - Vittorio Pace
- University of Vienna – Department of Pharmaceutical Chemistry
- Vienna
- Austria
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35
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Clarke AK, Liddon JTR, Cuthbertson JD, Taylor RJK, Unsworth WP. Dearomatisation approaches to spirocyclic dienones via the electrophilic activation of alkynes. Org Biomol Chem 2017; 15:233-245. [DOI: 10.1039/c6ob02426b] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
Two simple metal-mediated dearomatising spirocyclisation protocols to generate spirocyclic dienones from anisole and phenol-tethered ynones in high yields are described.
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36
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Nordqvist A, O'Mahony G, Fridén-Saxin M, Fredenwall M, Hogner A, Granberg KL, Aagaard A, Bäckström S, Gunnarsson A, Kaminski T, Xue Y, Dellsén A, Hansson E, Hansson P, Ivarsson I, Karlsson U, Bamberg K, Hermansson M, Georgsson J, Lindmark B, Edman K. Structure-Based Drug Design of Mineralocorticoid Receptor Antagonists to Explore Oxosteroid Receptor Selectivity. ChemMedChem 2016; 12:50-65. [DOI: 10.1002/cmdc.201600529] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2016] [Revised: 11/22/2016] [Indexed: 01/05/2023]
Affiliation(s)
- Anneli Nordqvist
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Gavin O'Mahony
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Maria Fridén-Saxin
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Marlene Fredenwall
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Anders Hogner
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Kenneth L. Granberg
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Anna Aagaard
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Stefan Bäckström
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Anders Gunnarsson
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Tim Kaminski
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Yafeng Xue
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Anita Dellsén
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Eva Hansson
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Pia Hansson
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Ida Ivarsson
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Ulla Karlsson
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
| | - Krister Bamberg
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Majlis Hermansson
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Jennie Georgsson
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Bo Lindmark
- Cardiovascular and Metabolic Diseases; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 Mölndal 43183 Sweden
| | - Karl Edman
- Discovery Sciences; Innovative Medicines and Early Development Biotech Unit; AstraZeneca; Pepparedsleden 1 43183 Mölndal Sweden
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37
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Wang YN, Sun GX, Qi G. β-Amino functionalization of cinnamic Weinreb amides in ionic liquid. Beilstein J Org Chem 2016; 12:2372-2377. [PMID: 28144305 PMCID: PMC5238596 DOI: 10.3762/bjoc.12.231] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2016] [Accepted: 10/24/2016] [Indexed: 11/23/2022] Open
Abstract
2-Ns-Protected β-amino Weinreb amides were synthesized by aminochlorination of α,β-unsaturated Weinreb amides in an ionic liquid, 1-n-butyl-3-methylimidazolium bis(trifluoromethanesulfonyl)imide ([BMIM][NTf2]). Processed without the use of metal catalysts or the need of an inert gas atmosphere, the presented process can be readily performed as a one-pot synthesis at room temperature. Moreover, the preparation has the distinct advantages of the use of 2-NsNCl2 as an inexpensive and stable nitrogen/halogen source and the ionic liquid as a recyclable reaction media. Nine examples were examined, and modest to good isolated chemical yields (40–83%) were obtained.
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Affiliation(s)
- Yi-Ning Wang
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
| | - Guo-Xiang Sun
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
| | - Gang Qi
- School of Chemistry & Chemical Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu 224051, China
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38
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Wu W, Tian Q, Chen T, Weng Z. Copper-Mediated Trifluoroacetylation of Arenediazonium Salts with Ethyl Trifluoropyruvate. Chemistry 2016; 22:16455-16458. [DOI: 10.1002/chem.201604300] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2016] [Indexed: 01/16/2023]
Affiliation(s)
- Wei Wu
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry; Fuzhou University; Fuzhou 350108 P. R. China
| | - Qinli Tian
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry; Fuzhou University; Fuzhou 350108 P. R. China
| | - Taotao Chen
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry; Fuzhou University; Fuzhou 350108 P. R. China
| | - Zhiqiang Weng
- State Key Laboratory of Photocatalysis on Energy and Environment College of Chemistry; Fuzhou University; Fuzhou 350108 P. R. China
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39
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Zhu F, Yang G, Zhou S, Wu XF. Palladium-catalyzed carbonylative coupling of aryl iodides with an organocopper reagent: a straightforward procedure for the synthesis of aryl trifluoromethyl ketones. RSC Adv 2016. [DOI: 10.1039/c6ra12287f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
A palladium-catalyzed carbonylative coupling of aryl iodides with a (trifluoromethyl)copper reagent has been developed.
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Affiliation(s)
- Fengxiang Zhu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Guangfu Yang
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Shaolin Zhou
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V. an der Universität Rostock
- 18059 Rostock
- Germany
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40
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Zeng Y, Ni C, Hu J. Recent Advances in the One-Step Synthesis of Distally Fluorinated Ketones. Chemistry 2015; 22:3210-3223. [DOI: 10.1002/chem.201504036] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2015] [Indexed: 12/22/2022]
Affiliation(s)
- Yuwen Zeng
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 P. R. China
| | - Chuanfa Ni
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 P. R. China
| | - Jinbo Hu
- Key Laboratory of Organofluorine Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Ling-Ling Road Shanghai 200032 P. R. China
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41
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Kadoh Y, Tashiro M, Oisaki K, Kanai M. Organocatalytic Aerobic Oxidation of α-Fluoroalkyl Alcohols to Fluoroalkyl Ketones at Room Temperature. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500131] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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42
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43
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Jamal Z, Teo YC. Indium-catalyzed C(sp3)–H functionalization of 2-methylazaarenes through direct benzylic addition to trifluoromethyl ketones. RSC Adv 2015. [DOI: 10.1039/c4ra17182a] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
The application of InCl3 for the catalytic C(sp3)–H functionalization of 2-methylazaarenes leading to trifluoromethylated alcohols in up to 99% yield.
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Affiliation(s)
- Zaini Jamal
- Natural Sciences and Science Education
- National Institute of Education
- Nanyang Technological University
- Singapore 637616
- Singapore
| | - Yong-Chua Teo
- Natural Sciences and Science Education
- National Institute of Education
- Nanyang Technological University
- Singapore 637616
- Singapore
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44
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Silwal S, Rahaim RJ. Regioselective Synthesis of Enones via a Titanium-Promoted Coupling of Unsymmetrical Alkynes with Weinreb Amides. J Org Chem 2014; 79:8469-76. [DOI: 10.1021/jo5014417] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Sajan Silwal
- Department
of Chemistry, Oklahoma State University, 107 Physical Sciences 1, Stillwater, Oklahoma 74078, United States
| | - Ronald J. Rahaim
- Department
of Chemistry, Oklahoma State University, 107 Physical Sciences 1, Stillwater, Oklahoma 74078, United States
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45
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Hamlin TA, Lazarus GML, Kelly CB, Leadbeater NE. A Continuous-Flow Approach to 3,3,3-Trifluoromethylpropenes: Bringing Together Grignard Addition, Peterson Elimination, Inline Extraction, and Solvent Switching. Org Process Res Dev 2014. [DOI: 10.1021/op500190j] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Trevor A. Hamlin
- Department
of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
| | - Gillian M. L. Lazarus
- Department
of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
| | - Christopher B. Kelly
- Department
of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
| | - Nicholas E. Leadbeater
- Department
of Chemistry, University of Connecticut, 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
- Department of Community Medicine & Health Care, University of Connecticut Health Center, The Exchange, 263 Farmington Avenue, Farmington, Connecticut 06030, United States
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46
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Highly selective trifluoroacetic ester/ketone metathesis: an efficient approach to trifluoromethyl ketones and esters. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.05.017] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
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47
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Gadge ST, Bhanage BM. Pd(OAc)2/DABCO as an efficient and phosphine-free catalytic system for the synthesis of single and double Weinreb amides by the aminocarbonylation of aryl iodides. Org Biomol Chem 2014; 12:5727-32. [DOI: 10.1039/c4ob00729h] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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48
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Liu X, Xu C, Wang M, Liu Q. Trifluoromethyltrimethylsilane: nucleophilic trifluoromethylation and beyond. Chem Rev 2014; 115:683-730. [PMID: 24754488 DOI: 10.1021/cr400473a] [Citation(s) in RCA: 839] [Impact Index Per Article: 83.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Xiao Liu
- Department of Chemistry, Northeast Normal University , Changchun 130024, China
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49
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Hamlin TA, Kelly CB, Cywar RM, Leadbeater NE. Methylenation of perfluoroalkyl ketones using a Peterson olefination approach. J Org Chem 2014; 79:1145-55. [PMID: 24410210 DOI: 10.1021/jo402577n] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Abstract
An operationally simple, inexpensive, and rapid route for the olefination of a wide array of trifluoromethyl ketones to yield 3,3,3-trifluoromethylpropenes is reported. Using a Peterson olefination approach, the reaction gives good to excellent yields of the alkene products and can be performed without purification of the β-hydroxysilyl intermediate. The reaction can be extended to other perfluoroalkyl substituents and is easily scaled up. The alkenes prepared can be readily transformed into a variety of other perfluoroalkyl-containing compounds.
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Affiliation(s)
- Trevor A Hamlin
- Department of Chemistry, University of Connecticut , 55 North Eagleville Road, Storrs, Connecticut 06269-3060, United States
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50
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Kohn BL, Rovis T. Cobaltate anion couples terminal dienes with trifluoroacetic anhydride: a direct fluoroacylation of 1,3-dienes. Chem Sci 2014. [DOI: 10.1039/c4sc00743c] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Perfluoroketones are useful products and intermediates in medicinal and materials chemistry.
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Affiliation(s)
- Benjamin L. Kohn
- Department of Chemistry
- Colorado State University
- Fort Collins, USA
| | - Tomislav Rovis
- Department of Chemistry
- Colorado State University
- Fort Collins, USA
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