1
|
Arora S, Singh T, Singh A. Photocatalytic C2-trifluoroethylation and perfluoroalkylation of 3-substituted indoles using fluoroalkyl halides. Org Biomol Chem 2024; 22:4278-4282. [PMID: 38747327 DOI: 10.1039/d4ob00392f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/30/2024]
Abstract
A photocatalytic reactivity platform for the C2-trifluoroethylation and perfluoroalkylation of 3-substituted indoles has been developed. A range of fluoroalkyl halides have been employed as radical precursors under mild, transition-metal-free conditions to access new (per)fluorinated chemical space featuring the indole substructure. This general protocol is also applicable to indole-containing peptides.
Collapse
Affiliation(s)
- Shivani Arora
- Department of Chemistry, Indian Institute of Technology Kanpur, UP-208016, India.
| | - Tavinder Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, UP-208016, India.
| | - Anand Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, UP-208016, India.
- Department of Sustainable Energy Engineering, Kotak School of Sustainability, Indian Institute of Technology Kanpur, UP-208016, India
- Chandrakanta Kesavan Center for Energy Policy and Climate Solutions, Indian Institute of Technology Kanpur, UP-208016, India
| |
Collapse
|
2
|
Mushtaq A, Zahoor AF, Ahmad S, Saif MJ, ul Haq A, Khan SG, Al-Mutairi AA, Irfan A, Al-Hussain SA, Zaki MEA. A Comprehensive Review on Benzofuran Synthesis Featuring Innovative and Catalytic Strategies. ACS OMEGA 2024; 9:20728-20752. [PMID: 38764672 PMCID: PMC11097366 DOI: 10.1021/acsomega.4c02677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 04/20/2024] [Accepted: 04/24/2024] [Indexed: 05/21/2024]
Abstract
Benzofurans have intrigued both pharmaceutical researchers and chemists owing to the medicinal usage of their derivatives against copious disease-causing agents (i.e., bacteria, viruses, and tumors). These heterocyclic scaffolds are pervasively encountered in a number of natural products and drugs. The ever-increasing utilization of benzofuran derivatives as pharmaceutical agents persuaded the chemists to devise novel and facile methodological approaches to assemble the biologically potent benzofuran nucleus. This review summarizes the current developments regarding the innovative synthetic routes and catalytic strategies to procure the synthesis of benzofuran heterocycles with their corresponding mechanistic details, reported by several research groups during 2021-2023.
Collapse
Affiliation(s)
- Aqsa Mushtaq
- Department
of Chemistry, Government College University
Faisalabad, 38000 Faisalabad, Pakistan
| | - Ameer Fawad Zahoor
- Department
of Chemistry, Government College University
Faisalabad, 38000 Faisalabad, Pakistan
| | - Sajjad Ahmad
- Department
of Chemistry, University of Engineering
and Technology Lahore, Faisalabad Campus, 38000 Faisalabad, Pakistan
| | - Muhammad Jawwad Saif
- Department
of Applied Chemistry, Government College
University Faisalabad, 38000 Faisalabad, Pakistan
| | - Atta ul Haq
- Department
of Chemistry, Government College University
Faisalabad, 38000 Faisalabad, Pakistan
| | - Samreen Gul Khan
- Department
of Chemistry, Government College University
Faisalabad, 38000 Faisalabad, Pakistan
| | - Aamal A. Al-Mutairi
- Department
of Chemistry, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Ali Irfan
- Department
of Chemistry, Government College University
Faisalabad, 38000 Faisalabad, Pakistan
| | - Sami A. Al-Hussain
- Department
of Chemistry, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Magdi E. A. Zaki
- Department
of Chemistry, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| |
Collapse
|
3
|
Zhang Z, Huang Y, Yuan Z, Xia J, Weng Z. Zirconium-Catalyzed Synthesis of 6-(Trifluoromethyl)-2 H-pyran-2-ones via C-C Bond Cleavage. J Org Chem 2024; 89:5683-5689. [PMID: 38570938 DOI: 10.1021/acs.joc.4c00227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/05/2024]
Abstract
A strategy for the annulation reaction of alkynones with ethyl 4,4,4-trifluoro-3-oxobutanoate through C-C bond cleavage is described. The zirconium-catalyzed transformation provides access to a wide range of structurally diverse 6-(trifluoromethyl)-2H-pyran-2-ones in moderate to good yields, utilizing Na2CO3 as a base. Further transformations into trifluoromethylated arene derivatives have been demonstrated as well. Furthermore, plausible reaction pathways are proposed by conducting various control experiments and isolating a β-diketone intermediate (X-ray) containing an intramolecular hydrogen bond.
Collapse
Affiliation(s)
- Zipeng Zhang
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Yangjie Huang
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Zihang Yuan
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| | - Jianrong Xia
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
| | - Zhiqiang Weng
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese Lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou 350108, China
| |
Collapse
|
4
|
Huang Y, You C, Hong B, Han X, Weng Z. One-Pot Assembly of 2-Trifluoromethyl Benzothiazole and Benzoselenazole via Copper-Mediated Three-Component Cascade Reaction. Chem Asian J 2024:e202400331. [PMID: 38576218 DOI: 10.1002/asia.202400331] [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: 03/26/2024] [Accepted: 04/04/2024] [Indexed: 04/06/2024]
Abstract
A domino one-pot synthesis of 2-(trifluoromethyl) benzothiazole via copper-mediated three-component cascade reaction starting from the easily accessible starting materials such as o-iodoanilines, methyl trifluoropyruvate, and elemental sulfur is reported. The present strategy displayed a comprehensive substrate scope and good functional group tolerance and enabled access to a variety of substituted 2-(trifluoromethyl) benzothiazoles. A 2-(trifluoromethyl) benzoselenazole has also been synthesized utilizing this reaction methodology.
Collapse
Affiliation(s)
- Yangjie Huang
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Chenhui You
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| | - Biqiong Hong
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
| | - Xiaoyan Han
- Testing and Analysis Center, Soochow University, Suzhou, 215123, China
| | - Zhiqiang Weng
- Fujian Provincial University Engineering Research Center of Green Materials and Chemical Engineering, and Fujian Engineering Research Center of New Chinese lacquer Material, College of Materials and Chemical Engineering, Minjiang University, Fuzhou, 350108, China
- Key Laboratory of Molecule Synthesis and Function Discovery, College of Chemistry, Fuzhou University, Fuzhou, 350108, China
| |
Collapse
|
5
|
Zeng W, Li H, Wang D, Zhou L. Regioselective Synthesis of 3-Trifluoromethylpyrroles by [3 + 2] Cycloaddition of N-Acyl α-Amino Acids and 2-Bromo-3,3,3-trifluoropropene. J Org Chem 2023; 88:14088-14095. [PMID: 37698091 DOI: 10.1021/acs.joc.3c01611] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
A mild and concise method for the synthesis of 3-trifluoromethylpyrroles via base-mediated [3 + 2] cycloaddition of N-acyl α-amino acids and 2-bromo-3,3,3-trifluoropropene is described. N-Acyl α-amino acids serve as 1,3-dipole precursors without additional activating agents directly. A high level of regioselectivity was observed, regardless of the electronic nature and size of the substituents on 1,3-dipoles.
Collapse
Affiliation(s)
- Weidi Zeng
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046 Xinjiang, P. R. China
| | - Hui Li
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046 Xinjiang, P. R. China
| | - Duozhi Wang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046 Xinjiang, P. R. China
| | - Lei Zhou
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830046 Xinjiang, P. R. China
- Institute of Green Chemistry and Molecular Engineering, School of Chemistry, Sun Yat-Sen University, Guangzhou 510275, China
| |
Collapse
|
6
|
Recent advances in the synthesis of fluoroalkylated compounds using fluoroalkyl anhydrides. CHINESE CHEM LETT 2022. [DOI: 10.1016/j.cclet.2022.01.038] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
|
7
|
Ji XS, Zuo HD, Shen YT, Hao WJ, Tu SJ, Jiang B. Electrochemical selective annulative amino-ketalization and amino-oxygenation of 1,6-enynes. Chem Commun (Camb) 2022; 58:10420-10423. [PMID: 36043317 DOI: 10.1039/d2cc03922b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new electrochemical selective annulative amino-ketalization and amino-oxygenation of 1,6-enynes with disulfonimides and alcohols is reported, producing a series of functionalized benzofurans under catalyst- and oxidant-free conditions. The annulative aminoketalization proceeds with simple short-chain alcohols such as methanol, ethanol and n-propanol as O-nucleophilic reagents, while the reaction occurs in the annulative aminooxygenation direction in the presence of water and large steric sec-butyl alcohol (SBA).
Collapse
Affiliation(s)
- Xiao-Shuang Ji
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Hang-Dong Zuo
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China. .,School of Environmental and Safety Engineering, Changzhou University, Changzhou, 213164, Jiangsu, P. R. China
| | - Yi-Ting Shen
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Wen-Juan Hao
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Shu-Jiang Tu
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| | - Bo Jiang
- School of Chemistry & Materials Science, Jiangsu Normal University, Xuzhou, 221116, P. R. China.
| |
Collapse
|
8
|
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]
|
9
|
Zhou Q, Bao Y, Yan G. 2‐Bromo‐3,3,3‐Trifluoropropene: A Versatile Reagent for the Synthesis of Fluorinated Compounds. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200023] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Qin Zhou
- College of Jiyang Zhejiang A&F University Zhuji 311800 People's Republic of China
| | - Yining Bao
- College of Jiyang Zhejiang A&F University Zhuji 311800 People's Republic of China
| | - Guobing Yan
- College of Jiyang Zhejiang A&F University Zhuji 311800 People's Republic of China
| |
Collapse
|
10
|
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: 2] [Impact Index Per Article: 1.0] [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.
Collapse
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
| |
Collapse
|
11
|
Zhang X, Wang H, Xie L, You C, Han X, Weng Z. Copper-Catalyzed Synthesis of 5-Aryl-6-(Trifluoromethyl)-2,3-Dihydropyrazolo[1,2-a]Pyrazol-1(5H)-One. Chem Asian J 2021; 16:2669-2673. [PMID: 34313007 DOI: 10.1002/asia.202100693] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2021] [Revised: 07/20/2021] [Indexed: 11/11/2022]
Abstract
An efficient protocol for the synthesis of 5-aryl-6-(trifluoromethyl)-2,3-dihydropyrazolo[1,2-a]pyrazol-1(5H)-one derivatives through a copper-catalyzed [3+2]-cycloaddition of azomethine imines with 3,3,3-trifluoropropyne (generated in situ from dehydrobromination of 2-bromo-3,3,3-trifluoropropene under base conditions) is developed. The advantages of this transformation are the broad substrate scope and the good functional group compatibility. The subsequent oxidation and nucleophilic substitution/aromatization provide a new approach to 4-trifluoromethylated pyrazol-1-yl propanoic acids.
Collapse
Affiliation(s)
- Xinyu Zhang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Hui Wang
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Lili Xie
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Chenhui You
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| | - Xiaoyan Han
- Testing and Analysis Center, Soochow University, Suzhou, 215123, P. R. China
| | - Zhiqiang Weng
- Fujian Provincial Key Laboratory of Electrochemical Energy Storage Materials and Key Laboratory of Molecule Synthesis and Function Discovery College of Chemistry, Fuzhou University, Fuzhou, 350108, P. R. China
| |
Collapse
|