151
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Gou XY, Li Y, Wang XG, Liu HC, Zhang BS, Zhao JH, Zhou ZZ, Liang YM. Ruthenium-catalyzed ortho-selective CAr–H amination of heteroaryl arenes with di-tert-butyldiaziridinone. Chem Commun (Camb) 2019; 55:5487-5490. [DOI: 10.1039/c9cc02499a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Application of an oxidative amination reagent (di-tert-butyldiaziridinone) to the Ru3(CO)12-catalyzed ortho-selective CAr–H amination reaction is described.
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Affiliation(s)
- Xue-Ya Gou
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yuke Li
- Department of Chemistry and Centre for Scientific Modeling and Computation
- Chinese University of Hong Kong
- Shatin
- China
| | - Xin-Gang Wang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Hong-Chao Liu
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Bo-Sheng Zhang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jia-Hui Zhao
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Zhao-Zhao Zhou
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
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152
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Xu HJ, Kang YS, Shi H, Zhang P, Chen YK, Zhang B, Liu ZQ, Zhao J, Sun WY, Yu JQ, Lu Y. Rh(III)-Catalyzed meta-C–H Alkenylation with Alkynes. J Am Chem Soc 2018; 141:76-79. [DOI: 10.1021/jacs.8b11038] [Citation(s) in RCA: 73] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Hua-Jin Xu
- 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
| | - Yan-Shang Kang
- 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
| | - Hang Shi
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - Ping Zhang
- 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
| | - You-Ke Chen
- 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
| | - Bing Zhang
- 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
| | - Zhi-Qiang Liu
- 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
| | - Jing Zhao
- 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
| | - Wei-Yin Sun
- 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
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037, United States
| | - 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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153
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Tu G, Yuan C, Li Y, Zhang J, Zhao Y. A Ligand‐Enabled Palladium‐Catalyzed Highly
para
‐Selective Difluoromethylation of Aromatic Ketones. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201809788] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Guangliang Tu
- Key Laboratory of Organic Synthesis of Jiangsu ProvinceCollege of ChemistryChemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Chunchen Yuan
- Key Laboratory of Organic Synthesis of Jiangsu ProvinceCollege of ChemistryChemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Yuting Li
- Key Laboratory of Organic Synthesis of Jiangsu ProvinceCollege of ChemistryChemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Jingyu Zhang
- Key Laboratory of Organic Synthesis of Jiangsu ProvinceCollege of ChemistryChemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu ProvinceCollege of ChemistryChemical Engineering and Materials Science, Soochow University Suzhou 215123 P. R. China
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154
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Jing K, Li ZY, Wang GW. Direct Decarboxylative Meta-Selective Acylation of Arenes via an Ortho-Ruthenation Strategy. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03695] [Citation(s) in RCA: 53] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Kun Jing
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhong-Yuan Li
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Guan-Wu Wang
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry, Collaborative Innovation Center of Chemistry for Energy Materials (iChEM), Center for Excellence in Molecular Synthesis of CAS, and Department of Chemistry, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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155
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Ghorai D, Finger LH, Zanoni G, Ackermann L. Bimetallic Nickel Complexes for Aniline C–H Alkylations. ACS Catal 2018. [DOI: 10.1021/acscatal.8b03770] [Citation(s) in RCA: 27] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Debasish Ghorai
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Lars H. Finger
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Giuseppe Zanoni
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
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156
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Achar TK, Ramakrishna K, Pal T, Porey S, Dolui P, Biswas JP, Maiti D. Regiocontrolled Remote C−H Olefination of Small Heterocycles. Chemistry 2018; 24:17906-17910. [DOI: 10.1002/chem.201804351] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2018] [Indexed: 11/09/2022]
Affiliation(s)
- Tapas Kumar Achar
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Kankanala Ramakrishna
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Tapas Pal
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Sandip Porey
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Pravas Dolui
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Jyoti Prasad Biswas
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
| | - Debabrata Maiti
- Department of ChemistryIndian Institute of Technology Bombay Powai Mumbai 400076 India
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157
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Tu G, Yuan C, Li Y, Zhang J, Zhao Y. A Ligand-Enabled Palladium-Catalyzed Highly para-Selective Difluoromethylation of Aromatic Ketones. Angew Chem Int Ed Engl 2018; 57:15597-15601. [PMID: 30299562 DOI: 10.1002/anie.201809788] [Citation(s) in RCA: 51] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/24/2018] [Revised: 09/29/2018] [Indexed: 11/08/2022]
Abstract
A practical and highly para-selective C-H difluoromethylation of aromatic ketones has been developed by employing tetrakis(triphenylphosphine)palladium(0) as the catalyst and triphenylphosphine as the ligand. In addition to general aromatic ketones, this transformation was compatible with bioactive compounds and well-known drugs, such as oxybenzone, ketoprofen, zaltoprofen, and propafenone. Moreover, a mechanistic study revealed that a palladium intermediate coordinated by a carbonyl group promotes highly para-selective difluoromethylation.
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Affiliation(s)
- Guangliang Tu
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Chunchen Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, P. R. China
| | - Yuting Li
- 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
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering and Materials Science, Soochow University, Suzhou, 215123, 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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158
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Shan C, Zhu L, Qu LB, Bai R, Lan Y. Mechanistic view of Ru-catalyzed C-H bond activation and functionalization: computational advances. Chem Soc Rev 2018; 47:7552-7576. [PMID: 30182110 DOI: 10.1039/c8cs00036k] [Citation(s) in RCA: 174] [Impact Index Per Article: 29.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Ru-Catalyzed aromatic C-H bond activation and functionalization have emerged as important topics because they have resulted in remarkable progress in organic synthesis. Both experimental and theoretical studies of their mechanisms are important for the design of new synthetic methodologies. In this review, a mechanistic view of the Ru-mediated C-H bond cleavage step is first given to reveal the C-H bond activation modes, including oxidative addition, metathesis and base-assisted deprotonation. In this process, directing groups play an important role in determining the reactivity of the C-H bond. The C-H bond activation generally leads to the formation of a Ru-C bond, which is further functionalized in the subsequent steps. The mechanisms of Ru-catalyzed arylation, alkylation, and alkenylation of arenes are summarized, and these transformations can be categorized into cross-coupling with electrophiles or oxidative coupling with nucleophiles. In addition, the mechanism of ortho-ruthenation-enabled remote C-H bond functionalization is also discussed.
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Affiliation(s)
- Chunhui Shan
- College of Chemistry and Molecular Engineering, Zhengzhou University, Zhengzhou 450001, China
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159
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Jiang B, Liu JX, Wei Y, Shi M. Nickel-Catalyzed Synthesis of Benzo[b]naphtho[1,2-d]azepine via Intramolecular Radical Tandem Cyclization of Alkyl Bromide-Tethered Alkylidenecyclopropanes. Org Lett 2018; 20:6229-6233. [DOI: 10.1021/acs.orglett.8b02699] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | - Min Shi
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 354 Fenglin Lu, Shanghai 200032, People’s Republic of China
- State Key Laboratory and Institute of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
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160
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Font M, Spencer ARA, Larrosa I. meta-C-H arylation of fluoroarenes via traceless directing group relay strategy. Chem Sci 2018; 9:7133-7137. [PMID: 30310635 PMCID: PMC6137440 DOI: 10.1039/c8sc02417k] [Citation(s) in RCA: 36] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/01/2018] [Accepted: 07/25/2018] [Indexed: 11/21/2022] Open
Abstract
While several methods for the ortho selective arylation of fluoroarenes, meta-functionalisation has never been achieved. We report a new methodology, based on the traceless directing group relay concept, leading to the first meta-selective (hetero)arylation of fluoroarenes. In this strategy, CO2 is introduced as a transient directing group, to control a Pd-catalysed arylation meta to the fluoro functionality, prior to its release in a sequential, one-pot fashion. This method has shown compatibility with a number of functional groups and substitution patterns in both the fluoroarene core and aryl iodide coupling partners, and proceeds with complete meta-selectivity and mono vs. bis-arylation selectivity.
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Affiliation(s)
- Marc Font
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Andrew R A Spencer
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
| | - Igor Larrosa
- School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK .
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161
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Maji A, Dahiya A, Lu G, Bhattacharya T, Brochetta M, Zanoni G, Liu P, Maiti D. H-bonded reusable template assisted para-selective ketonisation using soft electrophilic vinyl ethers. Nat Commun 2018; 9:3582. [PMID: 30181575 PMCID: PMC6123475 DOI: 10.1038/s41467-018-06018-2] [Citation(s) in RCA: 50] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/21/2018] [Accepted: 08/07/2018] [Indexed: 11/09/2022] Open
Abstract
In nature, enzymatic pathways generate Caryl−C(O) bonds in a site-selective fashion. Synthetically, Caryl−C(O) bonds are synthesised in organometallic reactions using prefunctionalized substrate materials. Electrophilic routes are largely limited to electron-rich systems, non-polar medium, and multiple product formations with a limited scope of general application. Herein we disclose a directed para-selective ketonisation technique of arenes, overriding electronic bias and structural congestion, in the presence of a polar protic solvent. The concept of hard–soft interaction along with in situ activation techniques is utilised to suppress the competitive routes. Mechanistic pathways are investigated both experimentally and computationally to establish the hypothesis. Synthetic utility of the protocol is highlighted in formal synthesis of drugs, drug cores, and bioactive molecules. Electrophilic acylation of arenes is largely limited to electron rich systems, non-polar medium and often displays moderate selectivity. Here, the authors show a directed para-selective ketonisation of arenes, overriding electronic bias and structural congestion, and apply it to the synthesis of bioactive compounds.
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Affiliation(s)
- Arun Maji
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Amit Dahiya
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Gang Lu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA
| | - Trisha Bhattacharya
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India
| | - Massimo Brochetta
- Dipartimento di Chimica, Università degli Studi di Pavia, Viale Taramelli 10, 27100, Pavia, Italy
| | - Giuseppe Zanoni
- Dipartimento di Chimica, Università degli Studi di Pavia, Viale Taramelli 10, 27100, Pavia, Italy.
| | - Peng Liu
- Department of Chemistry, University of Pittsburgh, Pittsburgh, PA, 15260, USA.
| | - Debabrata Maiti
- Department of Chemistry, Indian Institute of Technology Bombay, Mumbai, 400076, India. .,Dipartimento di Chimica, Università degli Studi di Pavia, Viale Taramelli 10, 27100, Pavia, Italy.
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162
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Zhang L, Yu L, Zhou J, Chen Y. Meta-Selective C-H Alkylation of 2-Phenylpyridine Catalyzed by Ruthenium: DFT Study on the Mechanism and Regioselectivity. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800772] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lei Zhang
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling; School of Science; Tianjin Chengjian University; 300384 Tianjin P. R. of China
| | - Lu Yu
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling; School of Science; Tianjin Chengjian University; 300384 Tianjin P. R. of China
| | - Jianguo Zhou
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling; School of Science; Tianjin Chengjian University; 300384 Tianjin P. R. of China
| | - Yu Chen
- Tianjin Engineering Technology Center of Chemical Wastewater Source Reduction and Recycling; School of Science; Tianjin Chengjian University; 300384 Tianjin P. R. of China
- Department of Chemistry; School of Science; Tianjin University; 300354 Tianjin P. R. of China
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163
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Mehta A, Saha B, Koohang AA, Chorghade MS. Arene Ruthenium Catalyst MCAT-53 for the Synthesis of Heterobiaryl Compounds in Water through Aromatic C–H Bond Activation. Org Process Res Dev 2018. [DOI: 10.1021/acs.oprd.8b00141] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Anita Mehta
- Chicago Discovery Solutions LLC, 23561 West Main St., Plainfield, Illinois 60544, United States
| | - Biswajit Saha
- Chicago Discovery Solutions LLC, 23561 West Main St., Plainfield, Illinois 60544, United States
| | - Ali Aiden Koohang
- Chicago Discovery Solutions LLC, 23561 West Main St., Plainfield, Illinois 60544, United States
| | - Mukund S. Chorghade
- Chicago Discovery Solutions LLC, 23561 West Main St., Plainfield, Illinois 60544, United States
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164
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Farmer ME, Wang P, Shi H, Yu JQ. Palladium Catalyzed meta-C-H Functionalization of Masked Aromatic Aldehydes. ACS Catal 2018; 8:7362-7367. [PMID: 30581651 PMCID: PMC6301045 DOI: 10.1021/acscatal.8b01599] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Palladium catalyzed meta-C-H functionalization enabled by transient mediators has the potential to extend the utility of directed ortho-C-H functionalization to remote positions. However, there have been no reports of palladium catalyzed meta-C-H functionalization of aromatic aldehyde derivatives, which are highly versatile intermediates in organic synthesis. Herein we report the development of a directing group that, in the presence of a norbornene derived mediator and an appropriate pyridone ligand, allows palladium catalyzed meta-C-H functionalization of masked aromatic aldehydes. Mechanistic insight regarding the impact of the directing group length on this catalysis is also discussed.
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Affiliation(s)
- Marcus E. Farmer
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037
| | - Peng Wang
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037
| | - Hang Shi
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 N. Torrey Pines Road, La Jolla, California 92037
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165
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Liang QJ, Jiang B, Xu YH, Loh TP. Palladium-Catalyzed Regioselective Olefination of O-Acetyl Cyanohydrins. J Org Chem 2018; 83:8265-8271. [PMID: 29902382 DOI: 10.1021/acs.joc.8b00991] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
A practical palladium-catalyzed ortho-olefination of O-acetyl cyanohydrins assisted by synergetic directing groups has been developed. Thus, a range of olefinated O-acetyl cyanohydrins were synthesized in moderate to good yields. The reaction occurs efficiently with high regioselectivity and with a satisfactory tolerance of functional groups.
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Affiliation(s)
- Qiu-Ju Liang
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Bing Jiang
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Yun-He Xu
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Teck-Peng Loh
- Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China.,Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences , Nanyang Technological University , Singapore 637371
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166
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Khan FF, Sinha SK, Lahiri GK, Maiti D. Ruthenium-Mediated Distal C−H Activation. Chem Asian J 2018; 13:2243-2256. [DOI: 10.1002/asia.201800545] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2018] [Indexed: 11/12/2022]
Affiliation(s)
- Farheen Fatima Khan
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai 400076 India
| | - Soumya Kumar Sinha
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai 400076 India
| | - Goutam Kumar Lahiri
- 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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167
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Ghosh M, De Sarkar S. meta
- and para
-Selective C−H Functionalization using Transient Mediators and Noncovalent Templates. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800225] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Munmun Ghosh
- Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 West Bengal India
| | - Suman De Sarkar
- Department of Chemical Sciences; Indian Institute of Science Education and Research Kolkata; Mohanpur 741246 West Bengal India
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168
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Affiliation(s)
- Nicolas Sauermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Tjark H. Meyer
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Youai Qiu
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
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169
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Enantioselective remote meta-C-H arylation and alkylation via a chiral transient mediator. Nature 2018; 558:581-585. [PMID: 29915312 DOI: 10.1038/s41586-018-0220-1] [Citation(s) in RCA: 164] [Impact Index Per Article: 27.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2018] [Accepted: 03/27/2018] [Indexed: 11/09/2022]
Abstract
Enantioselective carbon-hydrogen (C-H) activation reactions by asymmetric metallation could provide new routes for the construction of chiral molecules1,2. However, current methods are typically limited to the formation of five- or six-membered metallacycles, thereby preventing the asymmetric functionalization of C-H bonds at positions remote to existing functional groups. Here we report enantioselective remote C-H activation using a catalytic amount of a chiral norbornene as a transient mediator, which relays initial ortho-C-H activation to the meta position. This was used in the enantioselective meta-C-H arylation of benzylamines, as well as the arylation and alkylation of homobenzylamines. The enantioselectivities obtained using the chiral transient mediator are comparable across different classes of substrates containing either neutral σ-donor or anionic coordinating groups. This relay strategy could provide an alternative means to remote chiral induction, one of the most challenging problems in asymmetric catalysis3,4.
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170
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Fan Z, Lu H, Cheng Z, Zhang A. Ligand-promoted ruthenium-catalyzed meta C-H chlorination of arenes using N-chloro-2,10-camphorsultam. Chem Commun (Camb) 2018; 54:6008-6011. [PMID: 29796497 DOI: 10.1039/c8cc03195a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A practical meta C-H chlorination protocol is established via a Ru(0)-catalyzed ortho-metalation strategy. The use of N-chloro-2,10-camphorsultam as a new chlorinating agent is crucial for the success of the current reaction and an N-heterocyclic carbene (NHC) ligand could significantly enhance the reactivity of the catalytic transformation. The mechanistic studies reveal that an unusual ortho C-H ruthenation relay process with ortho chlorination of the C-Ru bond is probably involved.
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Affiliation(s)
- Zhoulong Fan
- CAS Key Laboratory of Receptor Research and the State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica (SIMM), Chinese Academy of Sciences, Shanghai 201203, China.
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171
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Jayarajan R, Das J, Bag S, Chowdhury R, Maiti D. Diverse meta
-C−H Functionalization of Arenes across Different Linker Lengths. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201804043] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ramasamy Jayarajan
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
- Department of Biosciences and Bioengineering; Indian Institute of Technology Bombay; India
| | - Jayabrata Das
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
| | - Sukdev Bag
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
| | - Rajdip Chowdhury
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
| | - Debabrata Maiti
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
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172
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Jayarajan R, Das J, Bag S, Chowdhury R, Maiti D. Diverse meta
-C−H Functionalization of Arenes across Different Linker Lengths. Angew Chem Int Ed Engl 2018; 57:7659-7663. [DOI: 10.1002/anie.201804043] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/05/2018] [Indexed: 01/05/2023]
Affiliation(s)
- Ramasamy Jayarajan
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
- Department of Biosciences and Bioengineering; Indian Institute of Technology Bombay; India
| | - Jayabrata Das
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
| | - Sukdev Bag
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
| | - Rajdip Chowdhury
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
| | - Debabrata Maiti
- Department of Chemistry; Indian Institute of Technology Bombay; Powai Mumbai- 400 076 India
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173
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Kalepu J, Gandeepan P, Ackermann L, Pilarski LT. C4-H indole functionalisation: precedent and prospects. Chem Sci 2018; 9:4203-4216. [PMID: 29780550 PMCID: PMC5944383 DOI: 10.1039/c7sc05336c] [Citation(s) in RCA: 124] [Impact Index Per Article: 20.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/16/2017] [Accepted: 04/19/2018] [Indexed: 12/22/2022] Open
Abstract
C4-decorated indoles feature in a plethora of bioactive and functional compounds of importance to natural product synthesis, material sciences, as well as crop protection and pharmaceutical industries. Traditionally, their syntheses largely involved harsh stoichiometric metalations and radical reactions. However, transition metal catalysed C-H activation has recently evolved into a powerful strategy for the late-stage diversification of indoles at the C4-H position. Modern photoredox, enzymatic and precious transition metal catalysis represent the key stimuli for developing challenging C-C and C-Het bond forming transformations under mild reaction conditions. Herein, we discuss the evolution and application of these methods for the step-economical transformations of otherwise inert C4-H bonds up to December 2017.
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Affiliation(s)
- Jagadeesh Kalepu
- Department of Chemistry - BMC , Uppsala University , Box 576 , 75-123 Uppsala , Sweden . ; https://www.pilarskigroup.org/
| | - Parthasarathy Gandeepan
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Goettingen , Germany .
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie , Georg-August-Universität Göttingen , Tammannstraße 2 , 37077 Goettingen , Germany .
| | - Lukasz T Pilarski
- Department of Chemistry - BMC , Uppsala University , Box 576 , 75-123 Uppsala , Sweden . ; https://www.pilarskigroup.org/
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174
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Luo X, Xu Y, Xiao G, Liu W, Qian C, Deng G, Song J, Liang Y, Yang C. Palladium-Catalyzed Tandem Reaction of Three Aryl Iodides Involving Triple C–H Activation. Org Lett 2018; 20:2997-3000. [DOI: 10.1021/acs.orglett.8b00982] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xiai Luo
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules, Hunan Normal University, Changsha, Hunan 410081, China
- Hunan University of Medicine, Huaihua 418000, China
| | - Yankun Xu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules, Hunan Normal University, Changsha, Hunan 410081, China
| | - Genhua Xiao
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules, Hunan Normal University, Changsha, Hunan 410081, China
| | - Wenjuan Liu
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules, Hunan Normal University, Changsha, Hunan 410081, China
| | - Cheng Qian
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules, Hunan Normal University, Changsha, Hunan 410081, China
| | - Guobo Deng
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules, Hunan Normal University, Changsha, Hunan 410081, China
| | - Jianxin Song
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules, Hunan Normal University, Changsha, Hunan 410081, China
| | - Yun Liang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules, Hunan Normal University, Changsha, Hunan 410081, China
| | - Chunming Yang
- National & Local Joint Engineering Laboratory for New Petro-chemical Materials and Fine Utilization of Resources, Key Laboratory of Chemical Biology and Traditional Chinese Medicine Research, Ministry of Education, Key Laboratory of the Assembly and Application of Organic Functional Molecules, Hunan Normal University, Changsha, Hunan 410081, China
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175
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Qiu Y, Tian C, Massignan L, Rogge T, Ackermann L. Electrooxidative Ruthenium-Catalyzed C−H/O−H Annulation by Weak O
-Coordination. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201802748] [Citation(s) in RCA: 55] [Impact Index Per Article: 9.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Youai Qiu
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Cong Tian
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Leonardo Massignan
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Torben Rogge
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
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176
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Jiao Z, Lim LH, Hirao H, Zhou JS. Palladium‐Catalyzed
para
‐Selective Alkylation of Electron‐Deficient Arenes. Angew Chem Int Ed Engl 2018; 57:6294-6298. [DOI: 10.1002/anie.201801967] [Citation(s) in RCA: 47] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2018] [Revised: 03/22/2018] [Indexed: 02/05/2023]
Affiliation(s)
- Zhiwei Jiao
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link, SPMS-CBC-06-03 Singapore 637371 Singapore
| | - Li Hui Lim
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link, SPMS-CBC-06-03 Singapore 637371 Singapore
| | - Hajime Hirao
- Department of Chemistry City University of Hong Kong Tat Chee Avenue Kowloon, Hong Kong China
| | - Jianrong Steve Zhou
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link, SPMS-CBC-06-03 Singapore 637371 Singapore
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177
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Qiu Y, Tian C, Massignan L, Rogge T, Ackermann L. Electrooxidative Ruthenium-Catalyzed C−H/O−H Annulation by Weak O
-Coordination. Angew Chem Int Ed Engl 2018; 57:5818-5822. [DOI: 10.1002/anie.201802748] [Citation(s) in RCA: 152] [Impact Index Per Article: 25.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/05/2018] [Indexed: 11/08/2022]
Affiliation(s)
- Youai Qiu
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Cong Tian
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Leonardo Massignan
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Torben Rogge
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität Göttingen; Tammannstraße 2 37077 Göttingen Germany
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178
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Jiao Z, Lim LH, Hirao H, Zhou JS. Palladium‐Catalyzed
para
‐Selective Alkylation of Electron‐Deficient Arenes. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201801967] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Zhiwei Jiao
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link, SPMS-CBC-06-03 Singapore 637371 Singapore
| | - Li Hui Lim
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link, SPMS-CBC-06-03 Singapore 637371 Singapore
| | - Hajime Hirao
- Department of Chemistry City University of Hong Kong Tat Chee Avenue Kowloon, Hong Kong China
| | - Jianrong Steve Zhou
- Division of Chemistry and Biological Chemistry School of Physical and Mathematical Sciences Nanyang Technological University 21 Nanyang Link, SPMS-CBC-06-03 Singapore 637371 Singapore
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179
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Laudadio G, Govaerts S, Wang Y, Ravelli D, Koolman HF, Fagnoni M, Djuric SW, Noël T. Selective C(sp 3 )-H Aerobic Oxidation Enabled by Decatungstate Photocatalysis in Flow. Angew Chem Int Ed Engl 2018; 57:4078-4082. [PMID: 29451725 PMCID: PMC5900731 DOI: 10.1002/anie.201800818] [Citation(s) in RCA: 148] [Impact Index Per Article: 24.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2018] [Indexed: 11/09/2022]
Abstract
A mild and selective C(sp3 )-H aerobic oxidation enabled by decatungstate photocatalysis has been developed. The reaction can be significantly improved in a microflow reactor enabling the safe use of oxygen and enhanced irradiation of the reaction mixture. Our method allows for the oxidation of both activated and unactivated C-H bonds (30 examples). The ability to selectively oxidize natural scaffolds, such as (-)-ambroxide, pregnenolone acetate, (+)-sclareolide, and artemisinin, exemplifies the utility of this new method.
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Affiliation(s)
- Gabriele Laudadio
- Department of Chemical Engineering and ChemistryMicro Flow Chemistry and Process TechnologyEindhoven University of TechnologyDen Dolech 25612AZEindhovenThe Netherlands
| | - Sebastian Govaerts
- Department of Chemical Engineering and ChemistryMicro Flow Chemistry and Process TechnologyEindhoven University of TechnologyDen Dolech 25612AZEindhovenThe Netherlands
| | - Ying Wang
- Discovery Chemistry and TechnologiesAbbVie Inc.1 North Waukegan RoadNorth ChicagoIllinois60064USA
| | - Davide Ravelli
- PhotoGreen LabDepartment of ChemistryUniversity of PaviaViale Taramelli 1227100PaviaItaly
| | - Hannes F. Koolman
- Discovery Chemistry and TechnologiesAbbVie Inc.1 North Waukegan RoadNorth ChicagoIllinois60064USA
- Current affiliation: Medicinal ChemistryBoehringer Ingelheim Pharma GmbH & Co. KGBirkendorfer Strasse 6588397Biberach an der RissGermany
| | - Maurizio Fagnoni
- PhotoGreen LabDepartment of ChemistryUniversity of PaviaViale Taramelli 1227100PaviaItaly
| | - Stevan W. Djuric
- Discovery Chemistry and TechnologiesAbbVie Inc.1 North Waukegan RoadNorth ChicagoIllinois60064USA
| | - Timothy Noël
- Department of Chemical Engineering and ChemistryMicro Flow Chemistry and Process TechnologyEindhoven University of TechnologyDen Dolech 25612AZEindhovenThe Netherlands
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180
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Haldar C, Emdadul Hoque M, Bisht R, Chattopadhyay B. Concept of Ir-catalyzed C H bond activation/borylation by noncovalent interaction. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.01.098] [Citation(s) in RCA: 67] [Impact Index Per Article: 11.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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181
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Mihai MT, Davis HJ, Genov GR, Phipps RJ. Ion Pair-Directed C–H Activation on Flexible Ammonium Salts: meta-Selective Borylation of Quaternized Phenethylamines and Phenylpropylamines. ACS Catal 2018. [DOI: 10.1021/acscatal.8b00423] [Citation(s) in RCA: 75] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Madalina T. Mihai
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Holly J. Davis
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Georgi R. Genov
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom
| | - Robert J. Phipps
- Department of Chemistry, University of Cambridge, Lensfield Road, Cambridge, CB2 1EW, United Kingdom
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182
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Yuan C, Zhu L, Chen C, Chen X, Yang Y, Lan Y, Zhao Y. Ruthenium(II)-enabled para-selective C-H difluoromethylation of anilides and their derivatives. Nat Commun 2018; 9:1189. [PMID: 29567953 PMCID: PMC5864885 DOI: 10.1038/s41467-018-03341-6] [Citation(s) in RCA: 92] [Impact Index Per Article: 15.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/17/2017] [Accepted: 01/25/2018] [Indexed: 11/14/2022] Open
Abstract
Transition-metal-catalyzed direct site-selective functionalization of arene C–H bonds has emerged as an innovative approach for building the core structure of pharmaceutical agents and other versatile complex compounds. However, para-selective C–H functionalization has seldom been explored, only a few examples, such as steric-hindered arenes, electron-rich arenes, and substrates with a directing group, have been reported to date. Here we describe the development of a ruthenium-enabled para-selective C–H difluoromethylation of anilides, indolines, and tetrahydroquinolines. This reaction tolerates various substituted arenes, affording para-difluoromethylation products in moderate to good yields. Results of a preliminary study of the mechanism indicate that chelation-assisted cycloruthenation might play a role in the selective activation of para-CAr–H bonds. Furthermore, this method provides a direct approach for the synthesis of fluorinated drug derivatives, which has important application for drug discovery and development. Selective para-functionalization of substituted arenes is a formidable challenge in homogeneous catalysis. Here, the authors achieved the para-selective C-H difluoromethylation of anilides, indolines and tetrahydroquinolines with a ruthenium catalyst in good yields and apply it to the synthesis of bioactive compounds.
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Affiliation(s)
- Chunchen Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering, and Materials Science Soochow University, Suzhou, 215123, China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering Chongqing University, Chongqing, 40030, China
| | - Changpeng Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering, and Materials Science Soochow University, Suzhou, 215123, China
| | - Xiaolan Chen
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering, and Materials Science Soochow University, Suzhou, 215123, China
| | - Yong Yang
- Qingdao Institute of Bioenergy and Bioprocess Technology, Chinese Academy of Science, Qingdao, 266000, China
| | - Yu Lan
- School of Chemistry and Chemical Engineering Chongqing University, Chongqing, 40030, China.
| | - Yingsheng Zhao
- Key Laboratory of Organic Synthesis of Jiangsu Province College of Chemistry, Chemical Engineering, and Materials Science Soochow University, Suzhou, 215123, China.
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183
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Laudadio G, Govaerts S, Wang Y, Ravelli D, Koolman HF, Fagnoni M, Djuric SW, Noël T. Selective C(sp3
)−H Aerobic Oxidation Enabled by Decatungstate Photocatalysis in Flow. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800818] [Citation(s) in RCA: 40] [Impact Index Per Article: 6.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Gabriele Laudadio
- Department of Chemical Engineering and Chemistry; Micro Flow Chemistry and Process Technology; Eindhoven University of Technology; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Sebastian Govaerts
- Department of Chemical Engineering and Chemistry; Micro Flow Chemistry and Process Technology; Eindhoven University of Technology; Den Dolech 2 5612 AZ Eindhoven The Netherlands
| | - Ying Wang
- Discovery Chemistry and Technologies; AbbVie Inc.; 1 North Waukegan Road North Chicago Illinois 60064 USA
| | - Davide Ravelli
- PhotoGreen Lab; Department of Chemistry; University of Pavia; Viale Taramelli 12 27100 Pavia Italy
| | - Hannes F. Koolman
- Discovery Chemistry and Technologies; AbbVie Inc.; 1 North Waukegan Road North Chicago Illinois 60064 USA
- Current affiliation: Medicinal Chemistry; Boehringer Ingelheim Pharma GmbH & Co. KG; Birkendorfer Strasse 65 88397 Biberach an der Riss Germany
| | - Maurizio Fagnoni
- PhotoGreen Lab; Department of Chemistry; University of Pavia; Viale Taramelli 12 27100 Pavia Italy
| | - Stevan W. Djuric
- Discovery Chemistry and Technologies; AbbVie Inc.; 1 North Waukegan Road North Chicago Illinois 60064 USA
| | - Timothy Noël
- Department of Chemical Engineering and Chemistry; Micro Flow Chemistry and Process Technology; Eindhoven University of Technology; Den Dolech 2 5612 AZ Eindhoven The Netherlands
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184
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Fan Z, Lu H, Zhang A. PMes3-Promoted Ruthenium-Catalyzed Meta C–H Nitration of 6-Arylpurines. J Org Chem 2018; 83:3245-3251. [DOI: 10.1021/acs.joc.8b00149] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Zhoulong Fan
- CAS Key Laboratory of Receptor Research and the State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Heng Lu
- School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
| | - Ao Zhang
- CAS Key Laboratory of Receptor Research and the State Key Laboratory of Drug Research, Shanghai Institute of Materia Medica, Chinese Academy of Sciences, Shanghai 201203, China
- University of Chinese Academy of Sciences, Beijing 100049, China
- School of Life Science and Technology, ShanghaiTech University, Shanghai 201210, China
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185
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Fumagalli F, Warratz S, Zhang SK, Rogge T, Zhu C, Stückl AC, Ackermann L. Arene-Ligand-Free Ruthenium(II/III) Manifold for meta
-C−H Alkylation: Remote Purine Diversification. Chemistry 2018; 24:3984-3988. [DOI: 10.1002/chem.201800530] [Citation(s) in RCA: 59] [Impact Index Per Article: 9.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/30/2018] [Indexed: 11/06/2022]
Affiliation(s)
- Fernando Fumagalli
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstaße 2 37077 Göttingen Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstaße 2 37077 Göttingen Germany
| | - Shou-Kun Zhang
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstaße 2 37077 Göttingen Germany
| | - Torben Rogge
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstaße 2 37077 Göttingen Germany
| | - Cuiju Zhu
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstaße 2 37077 Göttingen Germany
| | - A. Claudia Stückl
- Institut für Anorganische Chemie; Georg-August-Universität; Tammannstaße 4 37077 Göttingen Germany
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie; Georg-August-Universität; Tammannstaße 2 37077 Göttingen Germany
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186
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Guin S, Deb A, Dolui P, Chakraborty S, Singh VK, Maiti D. Promoting Highly Diastereoselective γ-C–H Chalcogenation of α-Amino Acids and Aliphatic Carboxylic Acids. ACS Catal 2018. [DOI: 10.1021/acscatal.7b04074] [Citation(s) in RCA: 70] [Impact Index Per Article: 11.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Srimanta Guin
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Arghya Deb
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Pravas Dolui
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Souvik Chakraborty
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Vikas Kumar Singh
- 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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187
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Yang G, Zhu D, Wang P, Tang RY, Yu JQ. Remote C-H Activation of Various N-Heterocycles Using a Single Template. Chemistry 2018; 24:3434-3438. [PMID: 29345002 DOI: 10.1002/chem.201800105] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/10/2018] [Indexed: 11/10/2022]
Abstract
A single and simple ortho-sulfonyl benzonitrile template was developed to achieve remote C-H olefination of six different classes of N-heterocycles. We demonstrate that, by varying precatalysts and conditions, the same template can be applied to the remote C-H activation of six structurally distinct heterocyclic scaffolds, and the site-selectivity can be predicted based on distance and geometry. Furthermore, this new development shows that template-directed remote C-H activation is possible through macrocyclopalladation processes with smaller ring sizes.
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Affiliation(s)
- Guoqiang Yang
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Dajian Zhu
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Peng Wang
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Ri-Yuan Tang
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute (TSRI), 10550 North Torrey Pines Road, La Jolla, CA, 92037, USA
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188
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Jin Z, Chu L, Chen YQ, Yu JQ. Pd-Catalyzed Remote Meta-C–H Functionalization of Phenylacetic Acids Using a Pyridine Template. Org Lett 2018; 20:425-428. [DOI: 10.1021/acs.orglett.7b03336] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Zhong Jin
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Ling Chu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Yan-Qiao Chen
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
| | - Jin-Quan Yu
- Department of Chemistry, The Scripps Research Institute, 10550 North Torrey Pines Road, La Jolla, California 92037, United States
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189
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Korvorapun K, Kaplaneris N, Rogge T, Warratz S, Stückl AC, Ackermann L. Sequential meta-/ortho-C–H Functionalizations by One-Pot Ruthenium(II/III) Catalysis. ACS Catal 2018. [DOI: 10.1021/acscatal.7b03648] [Citation(s) in RCA: 98] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Korkit Korvorapun
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Nikolaos Kaplaneris
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Torben Rogge
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - Svenja Warratz
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
| | - A. Claudia Stückl
- Institut
für Anorganische Chemie, Georg-August-Universität Göttingen, Tammannstraße
4, 37077 Göttingen, Germany
| | - Lutz Ackermann
- Institut
für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstraße 2, 37077 Göttingen, Germany
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190
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Swamy T, Subba Reddy BV, Grée R, Ravinder V. Substrate-Directed C-H Functionalization of 2-Aryl Pyridines by Transition Metal Complexes. ChemistrySelect 2018. [DOI: 10.1002/slct.201702349] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Tallapally Swamy
- Department of Chemistry; Kakatiya University; Warangal- 506009 India
| | - Basi V. Subba Reddy
- Centre for Semio Chemicals; CSIR-Indian Institute of Chemical Technology; Hyderabad- 500007 India
| | - René Grée
- University of Rennes 1; Institute for Chemical Sciences in Renees, CNRS UMR 6226; Avenue du General Leclerc 35042 Rennes-Cedex France
| | - Vadde Ravinder
- Department of Chemistry; Kakatiya University; Warangal- 506009 India
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191
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Yuan C, Zhu L, Zeng R, Lan Y, Zhao Y. Ruthenium(II)-Catalyzed C−H Difluoromethylation of Ketoximes: Tuning the Regioselectivity from the meta
to the para
Position. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201711221] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chunchen Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering, and Materials Science; Soochow University; Suzhou 215123 P.R. China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 40030 P.R. China
| | - Runsheng Zeng
- Key Laboratory of Organic Synthesis of Jiangsu Province; College of Chemistry, Chemical Engineering, and Materials Science; Soochow University; Suzhou 215123 P.R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering; Chongqing University; Chongqing 40030 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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192
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Yuan C, Zhu L, Zeng R, Lan Y, Zhao Y. Ruthenium(II)-Catalyzed C-H Difluoromethylation of Ketoximes: Tuning the Regioselectivity from the meta to the para Position. Angew Chem Int Ed Engl 2018; 57:1277-1281. [PMID: 29215181 DOI: 10.1002/anie.201711221] [Citation(s) in RCA: 88] [Impact Index Per Article: 14.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Indexed: 11/06/2022]
Abstract
A highly para-selective CAr -H difluoromethylation of ketoxime ethers under ruthenium catalysis has been developed. A wide variety of ketoxime ethers are compatible with the reaction, which leads to the corresponding para-difluoromethylated products in moderate to good yield. A mechanistic study clearly showed that chelation-assisted cycloruthenation is the key factor in the para selectivity of the difluoromethylation of ketoxime ethers. Density functional theory was used to gain a theoretical understanding of the para selectivity.
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Affiliation(s)
- Chunchen Yuan
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Lei Zhu
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 40030, P.R. China
| | - Runsheng Zeng
- Key Laboratory of Organic Synthesis of Jiangsu Province, College of Chemistry, Chemical Engineering, and Materials Science, Soochow University, Suzhou, 215123, P.R. China
| | - Yu Lan
- School of Chemistry and Chemical Engineering, Chongqing University, Chongqing, 40030, 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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193
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McIntyre J, Mayoral-Soler I, Salvador P, Poater A, Nelson DJ. Insights into mechanism and selectivity in ruthenium(ii)-catalysed ortho-arylation reactions directed by Lewis basic groups. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00592c] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report a detailed study of the mechanism and selectivity of ruthenium-catalysed C–H arylation reactions directed by Lewis basic heterocycles.
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Affiliation(s)
- Jamie McIntyre
- WestCHEM Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
| | - Irene Mayoral-Soler
- WestCHEM Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
- Institut de Química Computacional i Catàlisi and Departament de Química
| | - Pedro Salvador
- Institut de Química Computacional i Catàlisi and Departament de Química
- Campus Montilivi
- Universitat de Girona
- 17003 Girona
- Spain
| | - Albert Poater
- Institut de Química Computacional i Catàlisi and Departament de Química
- Campus Montilivi
- Universitat de Girona
- 17003 Girona
- Spain
| | - David J. Nelson
- WestCHEM Department of Pure and Applied Chemistry
- University of Strathclyde
- Glasgow
- UK
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194
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Half-sandwich d 6 metal complexes comprising of 2-substituted-1,8-napthyridine ligands with unexpected bonding modes: Synthesis, structural and anti-cancer studies. J Organomet Chem 2018. [DOI: 10.1016/j.jorganchem.2017.11.011] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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195
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Lou M, Deng Z, Mao X, Fu Y, Yang Q, Peng Y. Rhodium-catalyzed C–H bond activation alkylation and cyclization of 2-arylquinazolin-4-ones. Org Biomol Chem 2018; 16:1851-1859. [DOI: 10.1039/c8ob00147b] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient method for the synthesis of isoquinolino[1,2-b]quinazolin-8-one derivatives and 12-methyl-12H-isoindolo[1,2-b]quinazoline-10-one derivatives is described herein.
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Affiliation(s)
- Minhao Lou
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Zhihong Deng
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Xuechun Mao
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Yang Fu
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Qin Yang
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
| | - Yiyuan Peng
- Key Laboratory of Functional Small Organic Molecule
- Ministry of Education
- Jiangxi Province's Key Laboratory of Green Chemistry
- Jiangxi Normal University
- Nanchang
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196
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Mondal M, Begum T, Bharali P. Regioselective C–H and N–H functionalization of purine derivatives and analogues: a synthetic and mechanistic perspective. Catal Sci Technol 2018. [DOI: 10.1039/c8cy01860j] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This perspective provides a systematic and concise overview of the recent development in C–H/N–H bond functionalization in purine derivatives and analogues.
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Affiliation(s)
- Manoj Mondal
- Department of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
| | - Tahshina Begum
- Chemical Sciences & Technology Division
- CSIR-NEIST
- AcSIR
- Jorhat-785006
- India
| | - Pankaj Bharali
- Department of Chemical Sciences
- Tezpur University
- Tezpur-784028
- India
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197
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Wu S, Yang Q, Hu Q, Wang Y, Chen L, Zhang H, Wu L, Li J. Manganese-catalyzed direct C2-allylation of indoles. Org Chem Front 2018. [DOI: 10.1039/c8qo00674a] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Development of manganese-catalyzed synthesis of functionalized indoles is reported. This method involves direct C–H activation and allylation of indoles with broad substrate tolerance, leading to a series of C2-allylated indole derivatives under mild reaction conditions.
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Affiliation(s)
- Shang Wu
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou
- People's Republic of China
| | - Quanlu Yang
- College of Chemical Engineering
- Lanzhou University of Arts and Science
- Lanzhou
- People's Republic of China
| | - Qinzheng Hu
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou
- People's Republic of China
| | - Yanbin Wang
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou
- People's Republic of China
| | - Lihua Chen
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou
- People's Republic of China
| | - Hong Zhang
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou
- People's Republic of China
| | - Lan Wu
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou
- People's Republic of China
| | - Jia Li
- Key Laboratory for Utility of Environment-Friendly Composite Materials and Biomass in Universities of Gansu Province
- College of Chemical Engineering
- Northwest Minzu University
- Lanzhou
- People's Republic of China
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198
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Tang J, Liu P, Zeng X. N-Heterocyclic carbene–chromium-catalyzed alkylative cross-coupling of benzamide derivatives with aliphatic bromides. Chem Commun (Camb) 2018; 54:9325-9328. [DOI: 10.1039/c8cc05026k] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
Described here is a chromium-catalyzed alkylative cross-coupling of benzamide derivatives with aliphatic electrophiles under mild conditions.
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Affiliation(s)
- Jinghua Tang
- Frontier Institute of Science and Technology
- Xi’an Jiaotong University
- Xi’an 710054
- China
- Key Laboratory of Green Chemistry & Technology
| | - Pei Liu
- Frontier Institute of Science and Technology
- Xi’an Jiaotong University
- Xi’an 710054
- China
- Key Laboratory of Green Chemistry & Technology
| | - Xiaoming Zeng
- Frontier Institute of Science and Technology
- Xi’an Jiaotong University
- Xi’an 710054
- China
- Key Laboratory of Green Chemistry & Technology
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199
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Reddy GM, Rao NS, Maheswaran H. Highly meta-selective halogenation of 2-phenylpyridine with a ruthenium(i) catalyst. Org Chem Front 2018. [DOI: 10.1039/c7qo01133d] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
A practical method for PhI(OCOCF3)2 mediated direct meta-C–H monohalogenation of 2-phenylpyridine and its derivatives via an Ru(i) catalyzed reaction is reported.
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Affiliation(s)
- Ganapam Manohar Reddy
- Inorganic & Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - Naidu Sambasiva Rao
- Inorganic & Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
| | - H. Maheswaran
- Inorganic & Physical Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad
- India
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200
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Wang XG, Li Y, Zhang LL, Zhang BS, Wang Q, Ma JW, Liang YM. Ruthenium(ii)-catalyzed selective C–H difluoroalkylation of aniline derivatives with pyrimidyl auxiliaries. Chem Commun (Camb) 2018; 54:9541-9544. [DOI: 10.1039/c8cc05067h] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A ruthenium-catalyzed alternative para- and meta-difluoroalkylation of anilines is herein reported.
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Affiliation(s)
- Xin-Gang Wang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yuke Li
- Department of Chemistry and Centre for Scientific Modeling and Computation
- Chinese University of Hong Kong
- Shatin
- China
| | - Lu-Lu Zhang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Bo-Sheng Zhang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Qiang Wang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jun-Wei Ma
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yong-Min Liang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
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