1
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Lv Y, Wu M, Lu W, Cui M, Liu J, Yi W, Wang X, Lu X. Rhodium-Promoted C-H Activation/Annulation between DNA-Linked Terminal Alkyne and Aromatic Acid: A Finding from the Selection Outcomes. Org Lett 2024; 26:4958-4962. [PMID: 38833318 DOI: 10.1021/acs.orglett.4c01553] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2024]
Abstract
Inspired by previous selection outcomes, we investigated and developed a rhodium-promoted C-H activation/annulation reaction of DNA-linked terminal alkynes and aromatic acids. This reaction exhibits excellent efficiency with high conversions and a broad substrate scope. Most importantly, the unique DEL-compatible conditions provide a better scenario for yielding an isocoumarin scaffold compared to conventional organic reaction conditions, and this newly developed on-DNA method has confirmed its feasibility in preparing DNA-encoded libraries.
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Affiliation(s)
- Yuhan Lv
- Shandong Second Medical University, Weifang 261053, Shandong, China
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai 201203, China
| | - Min Wu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, Guangzhou Medical University, Guangzhou 511436, Guangdong, China
| | - Weiwei Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai 201203, China
| | - Meiying Cui
- Alphama Biotechnology Suzhou Co., Ltd., 108 Yuxin Road, Suzhou City, Jiangsu Province 215123, China
| | - Jiaxiang Liu
- Alphama Biotechnology Suzhou Co., Ltd., 108 Yuxin Road, Suzhou City, Jiangsu Province 215123, China
| | - Wei Yi
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, Guangzhou Medical University, Guangzhou 511436, Guangdong, China
| | - Xuan Wang
- Alphama Biotechnology Suzhou Co., Ltd., 108 Yuxin Road, Suzhou City, Jiangsu Province 215123, China
| | - Xiaojie Lu
- State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, 501 Haike Road, Zhang Jiang Hi-Tech Park, Pudong, Shanghai 201203, China
- University of Chinese Academy of Sciences, No. 19A Yuquan Road, Beijing 100049, China
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2
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Mahulkar PS, Joshi S, Banjare SK, Najiar LO, Ravikumar PC. Expanding the Scope of Alkynes in C-H Activation: Weak Chelation-Assisted Cobalt-Catalyzed Synthesis of Indole C(4)-Acrylophenone via C-O Bond Cleavage of Propargylic Ethers. Org Lett 2024; 26:2091-2096. [PMID: 38441887 DOI: 10.1021/acs.orglett.4c00389] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/16/2024]
Abstract
Herein, we report the facile synthesis of indole C(4)-acrylophenone using a C-H bond activation strategy. For this conversion, an unsymmetrical alkyne (phenylethynyl ether) in the presence of cobalt(III)-catalyst works efficiently. In this process, alkyne gets oxidized in the presence of in situ generated water, which is the key step for this method, for which trifluoroethanol is the water source. The pivaloyl directing group chelates effectively to generate the cobaltacycle intermediate, which was detected through high-resolution mass spectrometry (HRMS). Also, the formation of bis(2,2,2-trifluoroethyl) ether has been confirmed and quantified using 19F NMR. In addition, the applicability of obtained indole C(4)-acrylophenone product has been demonstrated by performing the Nazarov cyclization and conjugate addition to the α,β-unsaturated ketone moiety.
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Affiliation(s)
- Pranav Shridhar Mahulkar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Sofaya Joshi
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Lamphiza O Najiar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Ponneri C Ravikumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Bhubaneswar, Odisha 752050, India
- Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
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3
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Liu SL, Lv X, Wang X, Li Z, Huang Q, Jin Q, Zhou L, Fang S. One-Step Syntheses of 3,4-Disubstituted Isochroman-1-ones by the Annulation of Benzoic Acids with Nitroalkenes. J Org Chem 2024; 89:3672-3676. [PMID: 38379290 DOI: 10.1021/acs.joc.4c00059] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2024]
Abstract
The Rh(III)-catalyzed annulation of benzoic acids with nitroalkenes was disclosed to afford a wide range of 3,4-disubstituted isochroman-1-ones with excellent regioselectivity and high catalytic efficiency. Both aromatic and aliphatic nitroalkenes participated in this cyclization reaction successfully. The synthetic value of 3,4-disubstituted isochroman-1-ones was proven by a series of derivatizations. Furthermore, a reliable mechanism is outlined on the basis of experimental investigations and related precedents.
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Affiliation(s)
- Shuang-Liang Liu
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Xulin Lv
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Xiaoge Wang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Zhaoyang Li
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Qinchen Huang
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Qingxian Jin
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Liming Zhou
- College of Material and Chemical Engineering, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
| | - Shaoming Fang
- College of Material and Chemical Engineering, and Key Laboratory of Surface & Interface Science and Technology of Henan Province, Zhengzhou University of Light Industry, Kexue avenue 136, Zhengzhou 450001, P. R. China
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4
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Chen W, Jiang J, Wang J. Asymmetric Ruthenium-Catalyzed C-H Activation by a Versatile Chiral-Amide-Directing Strategy. Angew Chem Int Ed Engl 2024; 63:e202316741. [PMID: 38102747 DOI: 10.1002/anie.202316741] [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: 11/03/2023] [Revised: 12/15/2023] [Accepted: 12/15/2023] [Indexed: 12/17/2023]
Abstract
A versatile and readily available chiral amide directing group has been developed for the ruthenium(II)-catalyzed asymmetric C-H activation. Asymmetric C-H activation of the related chiral benzamides with various olefins, aldehydes and propargylic alcohols has been accomplished with high stereoselectivities, affording a series of chiral products including 3,4-dihydroisocoumarins (up to 96 % ee), isocoumarins (up to 92 % ee), phthalides (up to 99 % ee), chiral bicyclo[2.2.1]heptanes (>20 : 1 dr), 4-alkylidene-3,4-dihydroisocoumarins (up to 97 % ee) and allenes (>20 : 1 dr). Importantly, our methodologies enabled concise syntheses of many biologically active compounds and natural products (e.g., Montroumarin, Cyclosporone E, Cyclosporone Q, Concentricolide, Chuangxinol, and Eleutherol).
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Affiliation(s)
- Wenkun Chen
- School of Chemistry, Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, 510006, Guangzhou, P. R. China
| | - Jijun Jiang
- School of Chemistry, Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, 510006, Guangzhou, P. R. China
| | - Jun Wang
- School of Chemistry, Key Laboratory of Bioinorganic and Synthetic Chemistry of Ministry of Education, Guangdong Key Laboratory of Chiral Molecule and Drug Discovery, Sun Yat-Sen University, 510006, Guangzhou, P. R. China
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5
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Zhang J, Xu W, Zhuang W, Chen X, Zhang X, Huang Q. Rhodaelectro-Catalyzed Decarboxylative Cross-Dehydrogenative Coupling of Indole-3-carboxylic Acids and Olefins via Weakly Coordinating Carboxyl Groups. J Org Chem 2023; 88:15198-15208. [PMID: 37863844 DOI: 10.1021/acs.joc.3c01690] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2023]
Abstract
A rhodaelectro-catalyzed C2-H selectively decarboxylative alkenylation of 3-carboxy-1H-indoles employing electricity as the traceless terminal oxidant has been accomplished. The weakly coordinating carboxyl group serves as the traceless directing groups. External oxidant-free in an undivided cell with constant current in aqueous solution ensures the decarboxylative C-H alkenylation to be viable and sustainable.
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Affiliation(s)
- Jiaqi Zhang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Weijie Xu
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Weihui Zhuang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Ximan Chen
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Xiaofeng Zhang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
| | - Qiufeng Huang
- Fujian Key Laboratory of Polymer Materials, Fujian Provincial Key Laboratory of Advanced Materials Oriented Chemical Engineering, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P. R. China
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6
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Cai L, Lai Q, Zhang L, Xue G, Zhang Y, He N, Huang M, Hu S, Cai S. Visible-Light-Enabled Lanthanum-Mediated Intramolecular Epoxy-Ring Opening/Dehydrogenative Lactonization. Org Lett 2023; 25:7126-7131. [PMID: 37754837 DOI: 10.1021/acs.orglett.3c02589] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/28/2023]
Abstract
Catalytic C(sp3)-H functionalization has afforded great opportunities to prepare organic substances, facilitating the derivatization of complex drugs and natural molecules. This letter describes an efficient and practical protocol for lanthanum-catalyzed continuous epoxy-ring opening and oxidative dehydrogenative lactonization under visible-light irradiation. Notably, the lanthanum catalyst also acts as a photocatalyst while acting as a Lewis acid in this reaction; therefore, no additional photocatalyst is required. We can conveniently prepare a series of diverse isochromanones with oxygen-containing spirocyclic structural units under a balloon-oxygen atmosphere at room temperature. Mechanistic studies and control experiments reveal that the in situ-generated lanthanum bromide should be crucial in the reaction.
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Affiliation(s)
- Lina Cai
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, School of Chemistry, Chemical Engineering, and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Qihong Lai
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, School of Chemistry, Chemical Engineering, and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Lele Zhang
- Key Laboratory of Chemical Genomics of Guangdong Province, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
| | - Guotao Xue
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, School of Chemistry, Chemical Engineering, and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Yirui Zhang
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, School of Chemistry, Chemical Engineering, and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Na He
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, School of Chemistry, Chemical Engineering, and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Mingqiang Huang
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, School of Chemistry, Chemical Engineering, and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Shirong Hu
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, School of Chemistry, Chemical Engineering, and Environment, Minnan Normal University, Zhangzhou 363000, China
| | - Shunyou Cai
- Key Laboratory of Modern Analytical Science and Separation Technology of Fujian Province, School of Chemistry, Chemical Engineering, and Environment, Minnan Normal University, Zhangzhou 363000, China
- Key Laboratory of Chemical Genomics of Guangdong Province, School of Chemical Biology and Biotechnology, Shenzhen Graduate School, Peking University, Shenzhen 518055, China
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7
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Bhattacharyya H, Saha S, Verma K, Punniyamurthy T. Redox-Neutral Site-Selective C-H Allylation and Iodolactonization of Benzoic Acids Using Morita-Baylis-Hillman Adducts in Water. Org Lett 2023; 25:6830-6834. [PMID: 37682011 DOI: 10.1021/acs.orglett.3c02318] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/09/2023]
Abstract
A Ru-catalyzed carboxylate directed C-H allylation and iodolactonization of benzoic acids has been accomplished with Morita-Baylis-Hillman adducts as the coupling partner in environmentally benign water as solvent. The redox-neutral conditions, use of water as a solvent, substrate scope, functional group tolerance, and mutation of natural products and drug molecules are the important practical features.
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Affiliation(s)
- Hemanga Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Sharajit Saha
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Kshitiz Verma
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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8
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Dhillon P, Anaspure P, Wiklander JG, Kathiravan S, Nicholls IA. Diyne-steered switchable regioselectivity in cobalt(II)-catalysed C(sp 2)-H activation of amides with unsymmetrical 1,3-diynes. Org Biomol Chem 2023; 21:1942-1951. [PMID: 36753336 DOI: 10.1039/d2ob02193e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/09/2023]
Abstract
The regiochemical outcome of a cobalt(II) catalysed C-H activation reaction of aminoquinoline benzamides with unsymmetrical 1,3-diynes under relatively mild reaction conditions can be steered through the choice of diyne. The choice of diyne provides access to either 3- or 4-hydroxyalkyl isoquinolinones, paving the way for the synthesis of more highly elaborate isoquinolines.
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Affiliation(s)
- Prakriti Dhillon
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, Kalmar SE-39182, Sweden.
| | - Prasad Anaspure
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, Kalmar SE-39182, Sweden.
| | - Jesper G Wiklander
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, Kalmar SE-39182, Sweden.
| | - Subban Kathiravan
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, Kalmar SE-39182, Sweden.
| | - Ian A Nicholls
- Bioorganic & Biophysical Chemistry Laboratory, Linnaeus University Centre for Biomaterials Chemistry, Department of Chemistry & Biomedical Sciences, Linnaeus University, Kalmar SE-39182, Sweden.
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9
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Shankar M, Kumara Swamy KC. Ru( ii)-catalysed oxidative (4 + 2) annulation of chromene and coumarin carboxylic acids with alkynes/propargylic alcohols: isolation of Ru(0) complexes. Org Biomol Chem 2023; 21:195-208. [DOI: 10.1039/d2ob01890j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ru(ii)-catalysed oxidative (4 + 2) annulation of chromene and coumarin carboxylic acids with alkynes affords pyrano-chromones via vinylic C–H bond activation; use of methyl-tethered propargylic alcohols instead of alkynes gives Ru(0) complexes.
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Affiliation(s)
- Mallepalli Shankar
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
| | - K. C. Kumara Swamy
- School of Chemistry, University of Hyderabad, Hyderabad 500 046, Telangana, India
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10
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Zhang Y, Wang H, Bai J, Liu Q, Cui J, Huang Y. Rh(III)-Catalyzed Synthesis of Amino-isocoumarins with N-Functionalized Cyclic Carbonates via C-H/O-H Annulation. Org Lett 2022; 24:9222-9227. [PMID: 36562178 DOI: 10.1021/acs.orglett.2c03739] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A practical method to access amino-isocoumarins catalyzed by a Rh(III) complex through redox-neutral C-H/O-H annulation has been disclosed. The use of N-functionalized cyclic carbonates is crucial to facilitate the catalytic turnover, and a broad spectrum of amino-isocoumarin derivatives were prepared with satisfactory yields. Amino-isocoumarin estrone conjugated with a selenocyano functionality was identified to be nearly four times as active as the marketed drug abiraterone against T47D cancer cells.
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Affiliation(s)
- Yuanfei Zhang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China.,State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou 350002, China
| | - Hao Wang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Jintong Bai
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Qiuxia Liu
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Jianguo Cui
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
| | - Yanmin Huang
- Guangxi Key Laboratory of Natural Polymer Chemistry and Physics, Nanning Normal University, Nanning 530001, China
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11
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Han ZJ, Zhang ZX, Lin JJ, Ma B, Yang LX, Pu WG, Li YM, Chen H, Da CS. Rh(III)-Catalyzed Dual C-H Functionalization and C-O/C-N Annulations of Monoamide Fumarates. J Org Chem 2022; 87:15547-15558. [PMID: 36306342 DOI: 10.1021/acs.joc.2c02091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Pyrano[4,3-c]pyridine-diones, which are the key skeleton of bioactive compounds and functional materials, are usually prepared via a multistep synthesis using expensive substrates. This work demonstrates that Rh(III)-catalyzed dual C(sp2)-H functionalization and C-O/C-N annulation of monoamide fumarates can produce pyrano[4,3-c]pyridine-1,5(6H)-diones in high yield (up to 82%) in a single step. The substrates of monoamide fumarates and acetylenes are structurally simple, readily available, and inexpensive. The additive AgSbF6 effectively raised the yields. On account of easier dehydrogenation of OH in the COOH group than NH in the amide group in the reaction, the process first undergoes C-O annulation and then is succeeded by C-N annulation.
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Affiliation(s)
- Zhi-Jian Han
- The Key Laboratory of the Digestive System Tumors of Gansu Province, Department of Tumor Center, Lanzhou University Second Hospital, Lanzhou 730030, P. R. China
| | - Ze-Xuan Zhang
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, State Key Laboratory of Applied Organic Chemistry, Key Lab of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jin-Jin Lin
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, State Key Laboratory of Applied Organic Chemistry, Key Lab of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, P. R. China
| | - Bin Ma
- The Key Laboratory of the Digestive System Tumors of Gansu Province, Department of Tumor Center, Lanzhou University Second Hospital, Lanzhou 730030, P. R. China
| | - Lu-Xi Yang
- The Key Laboratory of the Digestive System Tumors of Gansu Province, Department of Tumor Center, Lanzhou University Second Hospital, Lanzhou 730030, P. R. China
| | - Wei-Gao Pu
- The Key Laboratory of the Digestive System Tumors of Gansu Province, Department of Tumor Center, Lanzhou University Second Hospital, Lanzhou 730030, P. R. China
| | - Yu-Min Li
- The Key Laboratory of the Digestive System Tumors of Gansu Province, Department of Tumor Center, Lanzhou University Second Hospital, Lanzhou 730030, P. R. China
| | - Hao Chen
- The Key Laboratory of the Digestive System Tumors of Gansu Province, Department of Tumor Center, Lanzhou University Second Hospital, Lanzhou 730030, P. R. China
| | - Chao-Shan Da
- Institute of Biochemistry and Molecular Biology, School of Life Sciences, State Key Laboratory of Applied Organic Chemistry, Key Lab of Preclinical Study for New Drugs of Gansu Province, Lanzhou University, Lanzhou 730000, P. R. China
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12
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Design, development and applications of copper-catalyzed regioselective (4 + 2) annulations between diaryliodonium salts and alkynes. Commun Chem 2022; 5:145. [PMID: 36697744 PMCID: PMC9814649 DOI: 10.1038/s42004-022-00768-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2022] [Accepted: 10/27/2022] [Indexed: 11/10/2022] Open
Abstract
Diaryliodonium salts have been extensively applied in organic synthesis as aryl cation equivalents. However, in the electrophilic reactions with alkenes or alkynes, only the electrophilic carbon of the diaryliodonium salts was involved while the other part of the aryl ring was not utilized. Herein, a reaction pattern of diaryliodonium was reported as oxa-1,4-dipoles to undergo (4 + 2) cycloaddition reactions with alkynes. Broad spectrum of the two reaction partners could be utilized in this protocol, enabling an operationally simple, high yielding, and regioselective synthetic approach to isocoumarins. Particularly, good to excellent regioselectivities were achieved for the sterically unbiased unsymmetrical diaryl acetylenes, which was challenging for other transition metal-catalyzed processes. The reaction could be scaled up with the ideal 1:1 stoichiometry and the isocoumarin type natural products Oospolactone and Thunberginol A could be obtained in one or three steps through this methodology.
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13
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Banjare SK, Mahulkar PS, Nanda T, Pati BV, Najiar LO, Ravikumar PC. Diverse reactivity of alkynes in C-H activation reactions. Chem Commun (Camb) 2022; 58:10262-10289. [PMID: 36040423 DOI: 10.1039/d2cc03294e] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Alkynes occupy a prominent role as a coupling partner in the transition metal-catalysed directed C-H activation reactions. Due to low steric requirements and linear geometry, alkynes can effectively coordinate with metal d-orbitals. This makes alkynes one of the most successful coupling partners in terms of the number of useful transformations. Remarkably, by changing the reaction conditions and transition-metals from 5d to 3d, the pattern of reactivity of alkynes also changes. Due to the varied reactivity of alkynes, such as alkenylation, annulation, alkylation, and alkynylation, they have been extensively used for the synthesis of valuable organic molecules. Despite enormous explorations with alkynes, there are still a lot more possible ways by which they can be made to react with M-C bonds generated through C-H activation. Practically there is no limit for the creative use of this approach. In particular with the development of new high and low valent first-row metal catalysts, there is plenty of scope for this chemistry to evolve as one of the most explored areas of research in the coming years. Therefore, a highlight article about alkynes is both timely and useful for synthetic chemists working in this area. Herein, we have highlighted the diverse reactivity of alkynes with various transition metals (Ir, Rh, Ru, Pd, Mn, Fe, Co, Ni, Cu) and their applications, along with some of our thoughts on future prospects.
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Affiliation(s)
- Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Pranav Shridhar Mahulkar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Tanmayee Nanda
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Bedadyuti Vedvyas Pati
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Lamphiza O Najiar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
| | - Ponneri C Ravikumar
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), Odisha 752050, India. .,Homi Bhabha National Institute (HBNI), Training School Complex, Anushaktinagar, Mumbai 400094, India
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14
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Hong C, Yu S, Liu Z, Xu Z, Zhang Y. Synthesis of Furans via Rhodium(III)-Catalyzed Cyclization of Acrylic Acids with α-Diazocarbonyl Compounds. J Org Chem 2022; 87:11979-11988. [PMID: 36037102 DOI: 10.1021/acs.joc.2c00924] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
An efficient protocol for the synthesis of furans through Rh(III)-catalyzed vinyl C-H activation from acrylic acids and α-diazocarbonyl compounds has been developed. The reaction features broad functional group tolerance and affords a series of furans in moderate to good yields. Moreover, no additives such as copper or silver salts are required. Some control experiments are performed to give insight into the mechanism of this cascade transformation and the decarbonylation process is involved in the formation of the furan product.
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Affiliation(s)
- Chao Hong
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Shuling Yu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zhanxiang Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zijing Xu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yuhong Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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15
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Bi H, Wang SR. Modular Regiodivergent Synthesis of Benzo-Fused Isocoumarins by a Cyclopropane Aromatization Strategy. Org Lett 2022; 24:6316-6320. [PMID: 35984353 DOI: 10.1021/acs.orglett.2c02535] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Reported herein is an electrophile-modulated aromatization reaction of highly functionalized cyclopropanes to structurally diverse benzoisocoumarins featuring concurrent formation of the benzenoid and α-pyrone rings under mild conditions. An aromatization reaction of the proposed benzonorcaradiene intermediates prepared independently revealed a crucial role of the neighboring olefinic substituents in determining whether the cyclopropane ring expansion is followed by a 1,2-shift of the ester group.
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16
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Sun L, Zhao Y, Liu B, Chang J, Li X. Rhodium III-catalyzed remote difunctionalization of arenes assisted by a relay directing group. Chem Sci 2022; 13:7347-7354. [PMID: 35799802 PMCID: PMC9214915 DOI: 10.1039/d2sc02205b] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2022] [Accepted: 05/28/2022] [Indexed: 11/21/2022] Open
Abstract
Rhodium-catalyzed diverse tandem twofold C-H bond activation reactions of para-olefin-tethered arenes have been realized, with unsaturated reagents such as internal alkynes, dioxazolones, and isocyanates being the coupling partner as well as a relay directing group which triggers cyclization of the para-olefin group under oxidative or redox-neutral conditions. The reaction proceeded via initial ortho-C-H activation assisted by a built-in directing group in the arene, and the ortho-incorporation of the unsaturated coupling partner simultaneously generated a relay directing group that allows sequential C-H activation at the meta-position and subsequent cyclization of the para-olefins. The overall reaction represents C-C or N-C difunctionalization of the arene with the generation of diverse 2,3-dihydrobenzofuran platforms. The catalytic system proceeded with good efficiency, simple reaction conditions, and broad substrate scope. The diverse transformations of the products demonstrated the synthetic utility of this tandem reaction.
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Affiliation(s)
- Lincong Sun
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
| | - Yuyao Zhao
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
| | - Bingxian Liu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
| | - Junbiao Chang
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
| | - Xingwei Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
- Institute of Molecular Science and Engineering, Institute of Frontier and Interdisciplinary Sciences, Shandong University Qingdao 250100 China
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17
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18
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Mandal R, Garai B, Sundararaju B. Weak-Coordination in C–H Bond Functionalizations Catalyzed by 3d Metals. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05267] [Citation(s) in RCA: 14] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Affiliation(s)
- Rajib Mandal
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh208016, India
| | - Bholanath Garai
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh208016, India
| | - Basker Sundararaju
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh208016, India
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19
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Zhang H, Sun MC, Yang D, Li T, Song MP, Niu JL. Cobalt(II)-Catalyzed Activation of C(sp3)–H Bonds: Organic Oxidant Enabled Selective Functionalization. ACS Catal 2022. [DOI: 10.1021/acscatal.1c05250] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- He Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Meng-Chan Sun
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Dandan Yang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Tong Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jun-Long Niu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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20
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Wu JX, Yao QX, Duan WZ, Li DC, Huang XQ, Dou JM, Wang HW. Rh III-Catalyzed heteroarylation of N-2,6-difluorophenyl arylamides with heteroaryl boronate esters. Org Chem Front 2022. [DOI: 10.1039/d1qo01868j] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
An efficient strategy to aryl-heteroaryl formation via RhIII-catalyzed C–H heteroarylation of arenes with N-heterocyclic boronates has been disclosed.
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Affiliation(s)
- Jia-Xue Wu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Qing-Xia Yao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Wen-Zeng Duan
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Da-Cheng Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Xian-Qiang Huang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Jian-Min Dou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Huai-Wei Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
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21
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Liu J, Xiao X, Lai Y, Zhang Z. Recent advances in transition metal-catalyzed heteroannulative difunctionalization of alkenes via C-H activation for the synthesis of heterocycles. Org Chem Front 2022. [DOI: 10.1039/d2qo00081d] [Citation(s) in RCA: 7] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Heterocyclic compounds are the fundamental structural motifs distributed in natural products, pharmaceuticals and biologically active compounds. Thus, there is increasing interest in the development of novel synthetic strategies for the...
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22
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Landge VG, Bonds AL, Mncwango TA, Mather CB, Saleh Y, Fields HL, Lee F, Young MC. Amine-Directed Mizoroki-Heck Arylation of Free Allylamines. Org Chem Front 2022. [DOI: 10.1039/d2qo00041e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The transition metal-catalyzed Mizoroki−Heck reaction is a powerful method to synthesize C–C bonds, allowing access to several important pharmaceuticals. Traditionally free amines have not been compatible with these approaches due...
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23
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Zhai H, Liu M, Wang C, Qiu S, Wei J, Yang H, Wu Y. Cobalt-Catalyzed 2-(1-Methylhydrazinyl)pyridine-Assisted C-H Alkylation/Annulation: Mechanistic Insights and Rapid Access to Cyclopenta[ c]isoquinolinone Derivatives. J Org Chem 2021; 86:14915-14927. [PMID: 34570982 DOI: 10.1021/acs.joc.1c01658] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
We have developed cobalt-catalyzed, bidentate 2-(1-methylhydrazinyl)pyridine (MHP)-directed C(sp2)-H alkylation/annulation of benzoic hydrazides with various alkenes. Notably, diverse cyclopenta[c]isoquinolinones and dihydroisoquinolinones were obtained via this functional group-tolerant protocol. The reaction can be performed on a gram scale while maintaining an excellent yield, and the directing group can be removed efficiently under mild conditions. Furthermore, density-functional theory (DFT) calculations provide an incisive understanding of the observed regioselectivities for different olefins.
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Affiliation(s)
- Hongbin Zhai
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Miao Liu
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Chao Wang
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Shuxian Qiu
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.,Department of Chemistry, Guangdong University of Education, Guangzhou 510303, China
| | - Jian Wei
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Hongjian Yang
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China
| | - Yundong Wu
- The Key Laboratory of Chemical Genomics and Lab of Computational Chemistry and Drug Design, The State Key Laboratory of Chemical Oncogenomics, Shenzhen Graduate School of Peking University, Shenzhen 518055, China.,Institute of Chemical Biology, Shenzhen Bay Laboratory, Shenzhen 518055, China
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24
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Yu S, Hong C, Liu Z, Zhang Y. Cobalt-Catalyzed Vinylic C-H Addition to Formaldehyde: Synthesis of Butenolides from Acrylic Acids and HCHO. Org Lett 2021; 23:8359-8364. [PMID: 34652922 DOI: 10.1021/acs.orglett.1c03095] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A carboxyl-assisted C-H functionalization of acrylic acids with formaldehyde to give butenolides is described. It is the first time that the addition of an inert vinylic C-H bond to formaldehyde has been achieved via cobalt-catalyzed C-H activation. The unique reactivity of the cobalt species was observed when compared with related Rh or Ir catalysts. γ-Hydroxymethylated butenolides were produced by the treatment of Na2CO3 after the catalytic reaction in one pot.
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Affiliation(s)
- Shuling Yu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Chao Hong
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zhanxiang Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yuhong Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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25
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Lukasevics L, Cizikovs A, Grigorjeva L. C-H bond functionalization by high-valent cobalt catalysis: current progress, challenges and future perspectives. Chem Commun (Camb) 2021; 57:10827-10841. [PMID: 34570134 DOI: 10.1039/d1cc04382j] [Citation(s) in RCA: 28] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Over the last decade, high-valent cobalt catalysis has earned a place in the spotlight as a valuable tool for C-H activation and functionalization. Since the discovery of its unique reactivity, more and more attention has been directed towards the utilization of cobalt as an alternative to noble metal catalysts. In particular, Cp*Co(III) complexes, as well as simple Co(II) and Co(III) salts in combination with bidentate chelation assistance, have been extensively used for the development of novel transformations. In this review, we have demonstrated the existing trends in the C-H functionalization methodology using high-valent cobalt catalysis and highlighted the main challenges to overcome, as well as perspective directions, which need to be further developed in the future.
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Affiliation(s)
- Lukass Lukasevics
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia.
| | - Aleksandrs Cizikovs
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia.
| | - Liene Grigorjeva
- Latvian Institute of Organic Synthesis, Aizkraukles 21, LV-1006 Riga, Latvia.
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26
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Wang F, Jing J, Zhao Y, Zhu X, Zhang XP, Zhao L, Hu P, Deng WQ, Li X. Rhodium-Catalyzed C-H Activation-Based Construction of Axially and Centrally Chiral Indenes through Two Discrete Insertions. Angew Chem Int Ed Engl 2021; 60:16628-16633. [PMID: 34008279 DOI: 10.1002/anie.202105093] [Citation(s) in RCA: 51] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2021] [Indexed: 12/20/2022]
Abstract
Reported herein is asymmetric [3+2] annulation of arylnitrones with different classes of alkynes catalyzed by chiral rhodium(III) complexes, with the nitrone acting as an electrophilic directing group. Three classes of chiral indenes/indenones have been effectively constructed, depending on the nature of the substrates. The coupling system features mild reaction conditions, excellent enantioselectivity, and high atom-economy. In particular, the coupling of N-benzylnitrones and different classes of sterically hindered alkynes afforded C-C or C-N atropochiral pentatomic biaryls with a C-centered point-chirality in excellent enantio- and diastereoselectivity (45 examples, average 95.6 % ee). These chiral center and axis are disposed in a distal fashion and they are constructed via two distinct migratory insertions that are stereo-determining and are under catalyst control.
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Affiliation(s)
- Fen Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Jierui Jing
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Yanliang Zhao
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Sciences, Shandong University, Qingdao, 266237, China
| | - Xiaohan Zhu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Xue-Peng Zhang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Liujie Zhao
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Panjie Hu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China
| | - Wei-Qiao Deng
- Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Sciences, Shandong University, Qingdao, 266237, China
| | - Xingwei Li
- School of Chemistry and Chemical Engineering, Shaanxi Normal University (SNNU), Xi'an, 710062, China.,Institute of Molecular Sciences and Engineering, Institute of Frontier and Interdisciplinary Sciences, Shandong University, Qingdao, 266237, China
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27
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Dong Z, Li P, Li X, Liu B. Rh(
III
)‐Catalyzed Diverse C—H Functionalization of Iminopyridinium Ylides. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100203] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Zhenzhen Dong
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
| | - Pengfei Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
| | - Xingwei Li
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
| | - Bingxian Liu
- NMPA Key Laboratory for Research and Evaluation of Innovative Drug, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University Xinxiang Henan 453007 China
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28
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Wang F, Jing J, Zhao Y, Zhu X, Zhang X, Zhao L, Hu P, Deng W, Li X. Rhodium‐Catalyzed C−H Activation‐Based Construction of Axially and Centrally Chiral Indenes through Two Discrete Insertions. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202105093] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Fen Wang
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Jierui Jing
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Yanliang Zhao
- Institute of Molecular Sciences and Engineering Institute of Frontier and Interdisciplinary Sciences Shandong University Qingdao 266237 China
| | - Xiaohan Zhu
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Xue‐Peng Zhang
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Liujie Zhao
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Panjie Hu
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
| | - Wei‐Qiao Deng
- Institute of Molecular Sciences and Engineering Institute of Frontier and Interdisciplinary Sciences Shandong University Qingdao 266237 China
| | - Xingwei Li
- School of Chemistry and Chemical Engineering Shaanxi Normal University (SNNU) Xi'an 710062 China
- Institute of Molecular Sciences and Engineering Institute of Frontier and Interdisciplinary Sciences Shandong University Qingdao 266237 China
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29
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Khusnuriyalova AF, Caporali M, Hey‐Hawkins E, Sinyashin OG, Yakhvarov DG. Preparation of Cobalt Nanoparticles. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100367] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Aliya F. Khusnuriyalova
- Alexander Butlerov Institute of Chemistry Kazan Federal University Kremlyovskaya 18 420008 Kazan Russian Federation
- Arbuzov Institute of Organic and Physical Chemistry FRC Kazan Scientific Center Russian Academy of Sciences Arbuzov Street 8 420088 Kazan Russian Federation
| | - Maria Caporali
- Institute of Chemistry of Organometallic Compounds (ICCOM) Via Madonna del Piano 10 50019 Sesto Fiorentino Italy
| | - Evamarie Hey‐Hawkins
- Faculty of Chemistry and Mineralogy Institute of Inorganic Chemistry Leipzig University Johannisallee 29 04103 Leipzig Germany
| | - Oleg G. Sinyashin
- Arbuzov Institute of Organic and Physical Chemistry FRC Kazan Scientific Center Russian Academy of Sciences Arbuzov Street 8 420088 Kazan Russian Federation
| | - Dmitry G. Yakhvarov
- Alexander Butlerov Institute of Chemistry Kazan Federal University Kremlyovskaya 18 420008 Kazan Russian Federation
- Arbuzov Institute of Organic and Physical Chemistry FRC Kazan Scientific Center Russian Academy of Sciences Arbuzov Street 8 420088 Kazan Russian Federation
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30
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Banjare SK, Nanda T, Pati BV, Biswal P, Ravikumar PC. O-Directed C-H functionalization via cobaltacycles: a sustainable approach for C-C and C-heteroatom bond formations. Chem Commun (Camb) 2021; 57:3630-3647. [PMID: 33870349 DOI: 10.1039/d0cc08199j] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review focuses on providing comprehensive highlights of the recent advances in the field of cobalt-catalysed C-H functionalization and related synthetic concepts, relying on these through oxygen atom coordination. In recent years, 3d transition metal (Fe, Co, Cu & Ni) catalysed C-H functionalization reactions have received immense attention on account of its higher abundance and low cost, as compared to noble metals such as Ir, Rh, Ru and Pd. Among the first-row transition metals, cobalt is one of the extensively used metals for sustainable synthesis due to its unique reactivity towards the functionalization of inert C-H bonds. The functionalization of the inert C-H bond necessitates a proximal directing group. In this context, strongly coordinating nitrogen atom directed C-H functionalizations have been well explored. Nevertheless, strongly coordinating nitrogen-containing scaffolds, such as pyridine, pyrimidine, and 8-aminoquinoline, have to be installed and removed in a separate process. In contrast, C-H functionalizations through weakly coordinating atoms, such as oxygen, are largely underdeveloped. Since the oxygen atom is a part of many readily available functional groups, such as aldehydes, ketones, carboxylic acids, and esters, it could be used as directing groups for selective C-H functionalization reactions without any modification. Thus, the use of 3d transition metals, such as cobalt, along with weakly coordinating (oxygen) directing groups for C-H functionalization reactions are more sustainable, especially for the large-scale production of pharmaceuticals in industries. During the last decade, notable progress has been made using this concept. Nonetheless, almost all the reports are restricted to the formation of C-C and C-N bond. Therefore, there is a wide scope for developing this area for the formation of other bonds, such as C-X (halogens), C-B, C-S, and C-Se.
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Affiliation(s)
- Shyam Kumar Banjare
- School of Chemical Sciences, National Institute of Science Education and Research (NISER) HBNI, Bhubaneswar, Odisha 752050, India.
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31
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Das J, Mal DK, Maji S, Maiti D. Recent Advances in External-Directing-Group-Free C–H Functionalization of Carboxylic Acids without Decarboxylation. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00176] [Citation(s) in RCA: 39] [Impact Index Per Article: 13.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jayabrata Das
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Dibya Kanti Mal
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Suman Maji
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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32
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Yang QL, Jia HW, Liu Y, Xing YK, Ma RC, Wang MM, Qu GR, Mei TS, Guo HM. Electrooxidative Iridium-Catalyzed Regioselective Annulation of Benzoic Acids with Internal Alkynes. Org Lett 2021; 23:1209-1215. [PMID: 33538167 DOI: 10.1021/acs.orglett.0c04168] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Electrochemically driven, Cp*Ir(III)-catalyzed regioselective annulative couplings of benzoic acids with alkynes have been established herein. The combination of iridium catalyst and electricity not only circumvents the need for stoichiometric amount of chemical oxidant, but also ensures broad reaction compatibility with a wide array of sterically and electronically diverse substrates. This electrochemical approach represents a sustainable strategy as an ideal alternative and supplement to the oxidative annulations methodology to be engaged in the synthesis of isocoumarin derivatives.
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Affiliation(s)
- Qi-Liang Yang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Hong-Wei Jia
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Ying Liu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yi-Kang Xing
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Rui-Cong Ma
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Man-Man Wang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Gui-Rong Qu
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Tian-Sheng Mei
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences, Chinese Academy of Sciences, 345 Lingling Lu, Shanghai 200032, China
| | - Hai-Ming Guo
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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33
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Wang HW, Qiao YH, Wu JX, Wang QP, Tian MX, Li YF, Yao QX, Li DC, Dou JM, Lu Y. Rh III-Catalyzed C-H (Het)arylation/Vinylation of N-2,6-Difluoroaryl Acrylamides. Org Lett 2021; 23:656-662. [PMID: 33443430 DOI: 10.1021/acs.orglett.0c03688] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
RhIII-catalyzed sp2 C-H cross-coupling of acrylamides with organoboron reactants has been accomplished using a commercially available N-2,6-difluoroaryl acrylamide auxiliary. A broad range of aryl and vinyl boronates as well as a variety of heterocyclic boronates with strong coordinating ability can serve as the coupling partners. This transformation proceeds under moderate reaction conditions with excellent functional group tolerance and high regioselectivity.
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Affiliation(s)
- Huai-Wei Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yu-Han Qiao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Jia-Xue Wu
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Qiu-Ping Wang
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Meng-Xin Tian
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yong-Fei Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Qing-Xia Yao
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Da-Cheng Li
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Jian-Min Dou
- Shandong Provincial Key Laboratory of Chemical Energy Storage and Novel Cell Technology, School of Chemistry and Chemical Engineering, Liaocheng University, Liaocheng 252000, China
| | - Yi Lu
- Coordination Chemistry Institute, State Key Laboratory of Coordination Chemistry, School of Chemistry and Chemical Engineering, Nanjing National Laboratory of Microstructures, Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Nanjing 210023, China
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34
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Luo F, He S, Gou Q, Chen J, Zhang M. Rhodium-catalyzed oxidative coupling of benzoic acids with propargyl alcohols: An efficient access to isocoumarins. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2020.152724] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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35
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Li MH, Si XJ, Zhang H, Yang D, Niu JL, Song MP. Directed Cobalt-Catalyzed C-H Activation to Form C-C and C-O Bonds in One Pot via Three-Component Coupling. Org Lett 2021; 23:914-919. [PMID: 33475370 DOI: 10.1021/acs.orglett.0c04122] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Herein, we disclose an efficient cobalt-catalyzed three-component coupling of benzamides, diazo compounds, and tert-butyl hydroperoxide, which provides an efficient approach to construct C(sp2)-C(sp3) and C-O bonds in one-pot accompanied with C-H activation. This protocol features low catalyst loading (4 mol %), the avoidance of additives, and excellent functional group compatibility, providing three-component coupling adducts with high yields under mild conditions (up to 88%). Mechanism studies show that the reaction may involve a radical process.
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Affiliation(s)
- Meng-Hui Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Xiao-Ju Si
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - He Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Dandan Yang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jun-Long Niu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Mao-Ping Song
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
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36
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Hu XQ, Hou YX, Liu ZK, Gao Y. Ruthenium-catalysed C–H/C–N bond activation: facile access to isoindolinones. Org Chem Front 2021. [DOI: 10.1039/d0qo01406k] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A facile ruthenium-catalysed C–H/C–N bond activation and the subsequent annulation of readily available benzoic acids with in situ generated formaldimines are developed for the efficient synthesis of a wide range of biologically important isoindolinones.
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Affiliation(s)
- Xiao-Qiang Hu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- School of Chemistry and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Ye-Xing Hou
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- School of Chemistry and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Zi-Kui Liu
- Key Laboratory of Catalysis and Energy Materials Chemistry of Ministry of Education & Hubei Key Laboratory of Catalysis and Materials Science
- School of Chemistry and Materials Science
- South-Central University for Nationalities
- Wuhan 430074
- China
| | - Yang Gao
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou
- China
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37
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Li J, Fang F, Wang R, Li Y, Xu B, Liu H, Zhou Y. A Rh(iii)-catalyzed C–H activation/regiospecific annulation cascade of benzoic acids with propargyl acetates to unusual 3-alkylidene-isochromanones. Org Chem Front 2021. [DOI: 10.1039/d1qo00387a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We developed a new approach to synthesize isochromanones with benzoic acids and propargyl acetates, which introducing an unusual exocyclic C–C double bond at the 3-position with high regioselectivity and moderate to excellent yields.
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Affiliation(s)
- Jiyuan Li
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
- State Key Laboratory of Drug Research
| | - Feifei Fang
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Run Wang
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Yuan Li
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Bin Xu
- Department of Chemistry
- Shanghai University
- Shanghai 200444
- China
| | - Hong Liu
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
| | - Yu Zhou
- State Key Laboratory of Drug Research
- Shanghai Institute of Materia Medica
- Chinese Academy of Sciences
- Shanghai 201203
- China
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38
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Spitz C, Matteudi M, Tintori G, Broggi J, Terme T, Vanelle P. Metal-Free Addition of Benzyl Halides to Aldehydes Using Super Electron Donors: Access to 3,4-Dihydroisocoumarins and 1,2-Diarylethanols. J Org Chem 2020; 85:15736-15742. [DOI: 10.1021/acs.joc.0c02374] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Cédric Spitz
- Aix Marseille Univ, CNRS, ICR UMR CNRS 7273, Equipe Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, 27 Boulevard Jean Moulin, CS 30064, Cedex 05 13385 Marseille, France
| | - Mélanie Matteudi
- Aix Marseille Univ, CNRS, ICR UMR CNRS 7273, Equipe Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, 27 Boulevard Jean Moulin, CS 30064, Cedex 05 13385 Marseille, France
| | - Guillaume Tintori
- Aix Marseille Univ, CNRS, ICR UMR CNRS 7273, Equipe Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, 27 Boulevard Jean Moulin, CS 30064, Cedex 05 13385 Marseille, France
| | - Julie Broggi
- Aix Marseille Univ, CNRS, ICR UMR CNRS 7273, Equipe Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, 27 Boulevard Jean Moulin, CS 30064, Cedex 05 13385 Marseille, France
| | - Thierry Terme
- Aix Marseille Univ, CNRS, ICR UMR CNRS 7273, Equipe Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, 27 Boulevard Jean Moulin, CS 30064, Cedex 05 13385 Marseille, France
| | - Patrice Vanelle
- Aix Marseille Univ, CNRS, ICR UMR CNRS 7273, Equipe Pharmaco-Chimie Radicalaire, Faculté de Pharmacie, 27 Boulevard Jean Moulin, CS 30064, Cedex 05 13385 Marseille, France
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39
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Gao H, Lin S, Zhang S, Chen W, Liu X, Yang G, Lerner RA, Xu H, Zhou Z, Yi W. gem
‐Difluoromethylene Alkyne‐Enabled Diverse C−H Functionalization and Application to the on‐DNA Synthesis of Difluorinated Isocoumarins. Angew Chem Int Ed Engl 2020. [DOI: 10.1002/ange.202013052] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Hui Gao
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Shuang Lin
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Shuning Zhang
- Shanghai Institute for Advanced Immunochemical Studies & School of Life Science and Technology ShanghaiTech University Shanghai 201210 P. R. China
| | - Weijie Chen
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Xiawen Liu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Guang Yang
- Shanghai Institute for Advanced Immunochemical Studies & School of Life Science and Technology ShanghaiTech University Shanghai 201210 P. R. China
| | - Richard A. Lerner
- Department of Chemistry Scripps Research Institute La Jolla CA 92037 USA
| | - Hongtao Xu
- Shanghai Institute for Advanced Immunochemical Studies & School of Life Science and Technology ShanghaiTech University Shanghai 201210 P. R. China
| | - Zhi Zhou
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Wei Yi
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
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40
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Gao H, Lin S, Zhang S, Chen W, Liu X, Yang G, Lerner RA, Xu H, Zhou Z, Yi W. gem
‐Difluoromethylene Alkyne‐Enabled Diverse C−H Functionalization and Application to the on‐DNA Synthesis of Difluorinated Isocoumarins. Angew Chem Int Ed Engl 2020; 60:1959-1966. [DOI: 10.1002/anie.202013052] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2020] [Indexed: 12/18/2022]
Affiliation(s)
- Hui Gao
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Shuang Lin
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Shuning Zhang
- Shanghai Institute for Advanced Immunochemical Studies & School of Life Science and Technology ShanghaiTech University Shanghai 201210 P. R. China
| | - Weijie Chen
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Xiawen Liu
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Guang Yang
- Shanghai Institute for Advanced Immunochemical Studies & School of Life Science and Technology ShanghaiTech University Shanghai 201210 P. R. China
| | - Richard A. Lerner
- Department of Chemistry Scripps Research Institute La Jolla CA 92037 USA
| | - Hongtao Xu
- Shanghai Institute for Advanced Immunochemical Studies & School of Life Science and Technology ShanghaiTech University Shanghai 201210 P. R. China
| | - Zhi Zhou
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
| | - Wei Yi
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Protein Modification and Degradation & Molecular Target and Clinical Pharmacology the State Key Laboratory of Respiratory Disease School of Pharmaceutical Sciences & the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou Guangdong 511436 P. R. China
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41
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Yu S, Lv N, Hong C, Liu Z, Zhang Y. Rh-Catalyzed Annulation of Benzoic Acids, Formaldehyde, and Malonates via ortho-Hydroarylation to Indanones. Org Lett 2020; 22:8354-8358. [PMID: 33157567 DOI: 10.1021/acs.orglett.0c02986] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
A three-component reaction from readily available low-cost materials of benzoic acids, formaldehyde, and malonates for the preparation of indanones by rhodium catalysis is reported. The annulation is initiated by an ortho-hydroarylation of benzoic acids, and a Lewis acid is not required. The solvent has a significant influence to the reaction, and 2-substituted or nonsubstituted indanones are obtained by the change of solvent.
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Affiliation(s)
- Shuling Yu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Ningning Lv
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Chao Hong
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Zhanxiang Liu
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Yuhong Zhang
- Department of Chemistry, Zhejiang University, Hangzhou 310027, China.,State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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42
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Wu J, Qian B, Liu Y, Shang Y. Ruthenium(II)‐Catalyzed C‐H Annulation of Aromatic Acids with Alkynes Using Air as the Sole Oxidant in Water. ChemistrySelect 2020. [DOI: 10.1002/slct.202003022] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jiaping Wu
- Key Laboratory of Functional Molecular Solids (Ministry of Education) Anhui Key Laboratory of Molecular Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 China
| | - Baiyang Qian
- Key Laboratory of Functional Molecular Solids (Ministry of Education) Anhui Key Laboratory of Molecular Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 China
| | - Yanfei Liu
- Key Laboratory of Functional Molecular Solids (Ministry of Education) Anhui Key Laboratory of Molecular Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids (Ministry of Education) Anhui Key Laboratory of Molecular Based Materials College of Chemistry and Materials Science Anhui Normal University Wuhu 241002 China
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43
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Nishii Y, Miura M. Cp*M-Catalyzed Direct Annulation with Terminal Alkynes and Their Surrogates for the Construction of Multi-Ring Systems. ACS Catal 2020. [DOI: 10.1021/acscatal.0c02972] [Citation(s) in RCA: 62] [Impact Index Per Article: 15.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Affiliation(s)
- Yuji Nishii
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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44
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Mihara G, Ghosh K, Nishii Y, Miura M. Concise Synthesis of Isocoumarins through Rh-Catalyzed Direct Vinylene Annulation: Scope and Mechanistic Insight. Org Lett 2020; 22:5706-5711. [PMID: 32638595 DOI: 10.1021/acs.orglett.0c02112] [Citation(s) in RCA: 68] [Impact Index Per Article: 17.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
Transition-metal-catalyzed activation of inert C-H bonds and subsequent C-C bond formation have emerged as powerful synthetic tools for the synthesis of elaborate cyclic molecules. In this report, we introduce an efficient synthetic method of 3,4-unsubstituted isocoumarins adopting an electron-deficient CpERh complex as the catalyst. The use of vinylene carbonate as a vinylene transfer reagent enables the direct construction of isocoumarins from readily available benzoic acids, without any external oxidants as well as bases. The reaction mechanism is evaluated by computational analysis to find an unprecedented "rhodium shift" event within the catalytic cycle.
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Affiliation(s)
- Gen Mihara
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Koushik Ghosh
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Yuji Nishii
- Frontier Research Base for Global Young Researchers, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
| | - Masahiro Miura
- Department of Applied Chemistry, Graduate School of Engineering, Osaka University, Suita, Osaka 565-0871, Japan
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45
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Mei R, Dhawa U, Samanta RC, Ma W, Wencel-Delord J, Ackermann L. Cobalt-Catalyzed Oxidative C-H Activation: Strategies and Concepts. CHEMSUSCHEM 2020; 13:3306-3356. [PMID: 32065843 DOI: 10.1002/cssc.202000024] [Citation(s) in RCA: 47] [Impact Index Per Article: 11.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/05/2020] [Revised: 02/14/2020] [Indexed: 06/10/2023]
Abstract
Inexpensive cobalt-catalyzed oxidative C-H functionalization has emerged as a powerful tool for the construction of C-C and C-Het bonds, which offers unique potential for transformative applications to modern organic synthesis. In the early stage, these transformations typically required stoichiometric and toxic transition metals as sacrificial oxidants; thus, the formation of metal-containing waste was inevitable. In contrast, naturally abundant molecular O2 has more recently been successfully employed as a green oxidant in cobalt catalysis, thus considerably improving the sustainability of such transformations. Recently, a significant momentum was gained by the use of electricity as a sustainable and environmentally benign redox reagent in cobalt-catalyzed C-H functionalization, thereby preventing the consumption of cost-intensive chemicals while at the same time addressing the considerable safety hazards related to the use of molecular oxygen in combination with flammable organic solvents. Considering the unparalleled potential of the aforementioned approaches for sustainable green synthesis, this Review summarizes the recent progress in cobalt-catalyzed oxidative C-H activation until early 2020.
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Affiliation(s)
- Ruhuai Mei
- College of Pharmacy and Biological Engineering, Chengdu University, Chengdu, 610106, P. R. China
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, 610052, P. R. China
| | - Uttam Dhawa
- Institut für Organische und Biomolekulare Chemie, Georg-August Universität, Tammannstraße 2, 37077, Göttingen, Germany
| | - Ramesh C Samanta
- Institut für Organische und Biomolekulare Chemie, Georg-August Universität, Tammannstraße 2, 37077, Göttingen, Germany
| | - Wenbo Ma
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics, Chengdu University, Chengdu, 610052, P. R. China
| | - Joanna Wencel-Delord
- Laboratoire d'Innovation Moléculaire et Applications (UMR CNRS 7042), Université de Strasbourg/Université de Haute Alsace, ECPM, 25 Rue Becquerel, 67087, Strasbourg, France
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August Universität, Tammannstraße 2, 37077, Göttingen, Germany
- Department of Chemistry, University of Pavia, Viale Taramelli, 10, 27100, Pavia, Italy
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46
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Zhou K, Geng J, Wang D, Zhang J, Zhao Y. An Indirect Strategy for Trifluoromethylation via an Iridium Catalyst: Approach to Generate Isocoumarin Skeletons in Bioactive Molecules. Org Lett 2020; 22:5109-5114. [PMID: 32551685 DOI: 10.1021/acs.orglett.0c01700] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
3-Bromo-1,1,1-trifluoroacetone was first disclosed as an effective indirect trifluoromethylation reagent to construct the important 3-trifluoromethyl isocoumarin skeleton. The reaction proceeds through a ligand-promoted, iridium-catalyzed ortho-selective C-H alkylation of benzoic acid and an intermolecular cyclization reaction promoted by silver acetate. A wide range of 3-trifluoromethyl isocoumarins can be easily obtained in moderate to good yields. Importantly, the isocoumarin skeleton can be easily formed in bioactive compounds, highlighting the importance of this reaction.
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Affiliation(s)
- Kehan Zhou
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, P. R. China.,Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jingyao Geng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Dongjie Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
| | - Jingyu Zhang
- College of Energy, Soochow Institute for Energy and Materials Innovations, Soochow University, Suzhou 215006, P. R. China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou 215123, P. R. China
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47
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Wei Y, Duan A, Tang PT, Li JW, Peng RM, Zhou ZX, Luo XP, Kurmoo M, Liu YJ, Zeng MH. Remote and Selective C(sp 2)-H Olefination for Sequential Regioselective Linkage of Phenanthrenes. Org Lett 2020; 22:4129-4134. [PMID: 32459099 DOI: 10.1021/acs.orglett.0c01208] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Biphenylcarboxylic acid with two competing C(sp2)-H sites was designed for site selective C(sp2)-H functionalization by developing carboxylic acids assisted remote and selective olefination via 7-membered palladacycle. Mechanism investigation and DFT calculations reveal a kinetics-determined process, which could be utilized to explore a variety of remote site selectivity. The practicability of this method was highlighted by the precise construction of phenathrene under sequential site selectivity.
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Affiliation(s)
- Yi Wei
- Hubei Collaborative Innovation Center for Advanced Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Abing Duan
- College of Environmental Science and Engineering, Hunan University, Changsha 410082, China
| | - Pan-Ting Tang
- Hubei Collaborative Innovation Center for Advanced Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Jia-Wei Li
- Hubei Collaborative Innovation Center for Advanced Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Rou-Ming Peng
- Hubei Collaborative Innovation Center for Advanced Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Zheng-Xin Zhou
- Hubei Collaborative Innovation Center for Advanced Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Xiao-Peng Luo
- Hubei Collaborative Innovation Center for Advanced Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Mohamedally Kurmoo
- Institut de Chimie de Strasbourg, CNRS-UMR7177, Université de Strasbourg, 4 rue Blaise Pascal, Strasbourg 67070, France
| | - Yue-Jin Liu
- Hubei Collaborative Innovation Center for Advanced Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China
| | - Ming-Hua Zeng
- Hubei Collaborative Innovation Center for Advanced Chemical Materials, Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules and College of Chemistry and Chemical Engineering, Hubei University, Wuhan 430062, China.,Department of Key Laboratory for the Chemistry and Molecular Engineering of Medicinal Resources, School of Chemistry and Pharmaceutical Sciences, Guangxi Normal University, Guilin 541004, China
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48
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Zhang K, Khan R, Chen J, Zhang X, Gao Y, Zhou Y, Li K, Tian Y, Fan B. Directing-Group-Controlled Ring-Opening Addition and Hydroarylation of Oxa/azabenzonorbornadienes with Arenes via C–H Activation. Org Lett 2020; 22:3339-3344. [DOI: 10.1021/acs.orglett.0c00765] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Keyang Zhang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
| | - Ruhima Khan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
| | - Jingchao Chen
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
| | - Xuexin Zhang
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
| | - Yang Gao
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
| | - Yongyun Zhou
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
- School of Chemistry and Environment, Institution Yunnan Minzu University, Yuehua Street, Kunming, 650500, China
| | - Kangkui Li
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
| | - Youxian Tian
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
| | - Baomin Fan
- Key Laboratory of Chemistry in Ethnic Medicinal Resources, Yunnan Minzu University, Kunming 650500, China
- School of Chemistry and Environment, Institution Yunnan Minzu University, Yuehua Street, Kunming, 650500, China
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49
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Son J, Maeng C, Lee PH. Synthetic Methods of Isocoumarins and Phosphaisocoumarins through CH Activation. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.11996] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Jeong‐Yu Son
- Department of ChemistryKangwon National University Chuncheon 24341 Republic of Korea
| | - Chanyoung Maeng
- Department of ChemistryKangwon National University Chuncheon 24341 Republic of Korea
| | - Phil Ho Lee
- Department of ChemistryKangwon National University Chuncheon 24341 Republic of Korea
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50
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Kumar A, Prabhu KR. Rhodium(III)-Catalyzed C-H Activation: A Cascade Approach for the Regioselective Synthesis of Fused Heterocyclic Lactone Scaffolds. J Org Chem 2020; 85:3548-3559. [PMID: 31994394 DOI: 10.1021/acs.joc.9b03266] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A Rh(III)-catalyzed cascade C-H activation; regioselective [4 + 2] oxidative annulation; and lactonization of aromatic acids, anhydrides, and acrylic acid derivatives with 4-hydroxy-2-alkynoates have been disclosed. This strategy leads to fused heterocyclic lactone scaffolds in a single step with moderate functional group tolerance and excellent site selectivity. Besides, in one step, an antipode of the cephalosol intermediate natural product that contains a tricyclic isocoumarin framework has been synthesized.
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Affiliation(s)
- Anil Kumar
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
| | - Kandikere Ramaiah Prabhu
- Department of Organic Chemistry, Indian Institute of Science, Bangalore 560 012, Karnataka, India
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