1
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Meena N, Nipate DS, Swami PN, Rangan K, Kumar A. Ru(II)-Catalyzed [4 + 2]-Annulation of 2-Alkenyl/Arylimidazoles with N-Substituted Maleimides and 1,4-Naphthoquinones: Access to Imidazo-Fused Polyheterocycles. J Org Chem 2024; 89:2272-2282. [PMID: 38305185 DOI: 10.1021/acs.joc.3c02229] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
Synthesis of imidazo-fused polyheterocyclic molecular frameworks, viz. imidazo[1,2-a]pyrrolo[3,4-e]pyridines, imidazo[2,1-a]pyrrolo[3,4-c]isoquinolines, and benzo[g]imidazo[1,2-a]quinoline-6,11-diones, has been achieved by the ruthenium(II)-catalyzed [4 + 2] C-H/N-H annulation of 2-alkenyl/2-arylimidazoles with N-substituted maleimides and 1,4-naphthoquinones. The developed protocol is operationally simple, exhibits broad substrate scope with excellent functional group tolerance, and provides the desired products in moderate to good yields. The mechanistic studies suggest that the reaction involves the formation of a C-C bond through Ru-catalyzed C(sp2)-H bond activation followed by intramolecular cyclization.
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Affiliation(s)
- Neha Meena
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani, Rajasthan 333031, India
| | - Dhananjay S Nipate
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani, Rajasthan 333031, India
| | - Prakash N Swami
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani, Rajasthan 333031, India
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad, Telangana 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani, Rajasthan 333031, India
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2
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Huang YT, Barve IJ, Pawar GP, Sun CM. Rapid Synthesis of Benzimidazole-Fused Isoindoles by Rh(III)/Ru(II)-Catalyzed [4 + 1] Cascade C-H/N-H Annulation of 2-Arylbenzimidazoles with Alkynoates and Alkynamide. J Org Chem 2023. [PMID: 37450843 DOI: 10.1021/acs.joc.3c00937] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/18/2023]
Abstract
A Rh(III)-catalyzed [4 + 1] cyclization of 2-arylbenzimidazoles with alkynoates through C-H activation/ortho-alkenylation/intramolecular annulation cascade to obtain benzimidazole-fused isoindoles is reported. The reaction of the Rh catalyst and internal alkyne ester provides benzo[4,5]imidazo[2,1-a]isoindole acetate exclusively. Conversely, internal alkyne amide participates in the annulation process in the presence of a Ru catalyst to provide benzo[4,5]imidazo[2,1-a]isoindole acetamide. The alkyne acts as a C1 synthon and undergoes [4 + 1] cyclization rather than traditional [4 + 2] annulation.
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Affiliation(s)
- Ying-Ti Huang
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Indrajeet J Barve
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
- Department of Chemistry, MES Abasaheb Garware College, Pune 411004, Maharashtra, India
| | - Ganesh P Pawar
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Chung-Ming Sun
- Department of Applied Chemistry, National Chiao-Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 807-08, Taiwan
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3
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Microfluidics Biocatalysis System Applied for the Synthesis of N-Substituted Benzimidazole Derivatives by Aza-Michael Addition. Catalysts 2022. [DOI: 10.3390/catal12121658] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022] Open
Abstract
Benzimidazole scaffolds became an attractive subject due to their broad spectrum of pharmacological activities. In this work, a methodology was developed for the synthesis of N-substituted benzimidazole derivatives from benzimidazoles and α, β-unsaturated compounds (acrylonitriles, acrylate esters, phenyl vinyl sulfone) catalyzed by lipase TL IM from Thermomyces lanuginosus in continuous-flow microreactors. Investigations were conducted on reaction parameters such as solvent, substrate ratio, reaction temperature, reactant donor/acceptor structures, and reaction time. The transformation is promoted by inexpensive and readily available lipase in methanol at 45 °C for 35 min. A wide range of β-amino sulfone, β-amino nitrile, and β-amino carbonyl compounds were efficiently and selectively synthesized in high yields (76–97%). All in all, a microfluidic biocatalysis system was applied to the synthesis of N-substituted benzimidazole derivatives, and could serve as a promising fast synthesis strategy for further research to develop novel and highly potent active drugs.
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4
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Nunewar S, Kumar S, Meshram AW, Kanchupalli V. Ru(II)-Catalyzed C–H Functionalization of 2-Arylbenzimidazoles with Iodonium Ylides: A Straightforward Access to Bridgehead Polycyclic N-Heterocycles. J Org Chem 2022; 87:13757-13762. [DOI: 10.1021/acs.joc.2c01429] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Saiprasad Nunewar
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, Telangana, India
| | - Sanjeev Kumar
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, Telangana, India
| | - Akhilesh Waman Meshram
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, Telangana, India
| | - Vinaykumar Kanchupalli
- National Institute of Pharmaceutical Education and Research (NIPER), Hyderabad 500 037, Telangana, India
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5
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Kumaran S, Parthasarathy K. Rhodium-Catalyzed Annulations and Heck Coupling/Aza-Michael Addition for the Synthesis of Benzothiadiazinoisoquinoline 6,6-Dioxides and Benzothiadiazinoisoindole 5,5-Dioxides, Respectively. J Org Chem 2022; 87:11989-12000. [PMID: 36049131 DOI: 10.1021/acs.joc.2c00964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A new and efficient protocol has been demonstrated for the synthesis of benzothiadiazinoisoquinoline 6,6-dioxides and benzothiadiazinoisoindole 5,5-dioxides in good to excellent yields. These compounds are formed through a sequential Rh(III)-catalyzed C-H cyclization of dihydrophenylbenzothiadiazine 1,1-dioxides with alkynes and oxidative Heck coupling/aza-Michael addition of dihydrophenylbenzothiadiazine 1,1-dioxides with acrylates, respectively.
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Affiliation(s)
- Subramani Kumaran
- Department of Organic Chemistry, University of Madras, Guindy Campus, Tamilnadu, Chennai 600025, India
| | - Kanniyappan Parthasarathy
- Department of Organic Chemistry, University of Madras, Guindy Campus, Tamilnadu, Chennai 600025, India
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6
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Huang YT, Barve IJ, Huang YT, Dhole S, Chiu WJ, Sun CM. Substrate-controlled Rh(III)-catalyzed regiodivergent annulation towards fused and spiro benzimidazoles. Org Biomol Chem 2022; 20:6854-6862. [PMID: 35971982 DOI: 10.1039/d2ob00906d] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A Rh(III)-catalyzed cascade C-H activation and cyclization of 2-aryl benzimidazoles with maleimides for the synthesis of benzimidazole-fused isoquinolines and benzimidazole-spiro isoindoles is reported. Switchable selectivity towards the formation of these two distinct products can be achieved using unsubstituted and substituted benzimidazoles at the ortho-position of the phenyl ring. Mechanistically, C-H activation followed by migratory insertion of maleimide forms a Heck-type intermediate. Unsubstituted benzimidazole undergoes aza-Michael addition to form a (4 + 2) fused product, whereas ortho-substituted phenyl benzimidazole causes steric clash to deliver a (4 + 1) spiro-adduct favorably via acid-catalyzed intramolecular annulation.
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Affiliation(s)
- Ying-Ti Huang
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China.
| | - Indrajeet J Barve
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China.
| | - Yi-Ting Huang
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China.
| | - Sandip Dhole
- Amar Chemistry Pvt. Ltd., G1A, Ackruti Corporate Park, Mumbai 400078, India
| | - Wei-Jung Chiu
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China.
| | - Chung-Ming Sun
- Department of Applied Chemistry, 1001 Ta-Hseuh Road, National Chiao Tung University, Hsinchu 300-10, Taiwan, Republic of China. .,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 807-08, Taiwan, Republic of China
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7
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Machado LA, Paz E, Araujo M, Almeida L, Bozzi Í, Dias G, Pereira C, Pedrosa L, Fantuzzi F, Martins F, Cury L, da Silva Júnior EN. Ruthenium(II)‐Catalyzed C–H/N–H Alkyne Annulation of Nonsymmetric Imidazoles: Mechanistic Insights by Computation and Photophysical Properties. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
| | - Esther Paz
- UFMG: Universidade Federal de Minas Gerais Chemistry BRAZIL
| | - Maria Araujo
- UFMG: Universidade Federal de Minas Gerais Chemistry BRAZIL
| | | | - Ícaro Bozzi
- UFMG: Universidade Federal de Minas Gerais Chemistry BRAZIL
| | - Gleiston Dias
- UFMG: Universidade Federal de Minas Gerais Chemistry BRAZIL
| | | | | | | | | | - Luiz Cury
- UFMG: Universidade Federal de Minas Gerais Physics BRAZIL
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8
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Lin C, Huang W, Huang Y, Dhole S, Sun C. Rhodium‐Catalyzed [4+2] Annulation of N‐Aryl Pyrazolones with Diazo Compounds To Access Pyrazolone‐Fused Cinnolines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202101005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Chih‐Yu Lin
- Department of Applied Chemistry National Chiao-Tung University 1001 Ta-Hseuh Road Hsinchu 300-10, ROC Taiwan
| | - Wan‐Wen Huang
- Department of Applied Chemistry National Chiao-Tung University 1001 Ta-Hseuh Road Hsinchu 300-10, ROC Taiwan
| | - Ying‐Ti Huang
- Department of Applied Chemistry National Chiao-Tung University 1001 Ta-Hseuh Road Hsinchu 300-10, ROC Taiwan
| | - Sandip Dhole
- Amar Chemistry Pvt. Ltd. G1 A, Ackruti Corporate Park Mumbai 400078 India
| | - Chung‐Ming Sun
- Department of Applied Chemistry National Chiao-Tung University 1001 Ta-Hseuh Road Hsinchu 300-10, ROC Taiwan
- Department of Medicinal and Applied Chemistry Kaohsiung Medical University Kaohsiung 807-08, ROC Taiwan
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9
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Kumari S, Sharma C, Srivastava AK, Satrawala N, Sharma KN, Joshi RK. Half‐Sandwich (η
6
‐Benzene)Ruthenium(II) Complex of Picolyl Functionalized N‐Heterocyclic Carbene as an Efficient Catalyst for Thioether Directed C−H Alkenylation of Arenes. Eur J Inorg Chem 2021. [DOI: 10.1002/ejic.202100501] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Sangeeta Kumari
- Department of Chemistry Malaviya National Institute of Technology Jaipur, Rajasthan 302017 India
| | - Charu Sharma
- Department of Chemistry Malaviya National Institute of Technology Jaipur, Rajasthan 302017 India
| | - Avinash K. Srivastava
- Department of Chemistry Malaviya National Institute of Technology Jaipur, Rajasthan 302017 India
| | - Naveen Satrawala
- Department of Chemistry Malaviya National Institute of Technology Jaipur, Rajasthan 302017 India
| | - Kamal N. Sharma
- Department of Chemistry Malaviya National Institute of Technology Jaipur, Rajasthan 302017 India
| | - Raj K. Joshi
- Department of Chemistry Malaviya National Institute of Technology Jaipur, Rajasthan 302017 India
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10
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Sunny S, John SE, Shankaraiah N. Exploration of C‐H Activation Strategies in Construction of Functionalized 2‐Aryl Benzoazoles: A Decisive Review. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100297] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Steeva Sunny
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Stephy Elza John
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
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11
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Bakthadoss M, Reddy TT, Sharada DS. Ruthenium-catalyzed, site-selective C-H activation: access to C5-substituted azaflavanone. RSC Adv 2020; 10:31570-31574. [PMID: 35520642 PMCID: PMC9056431 DOI: 10.1039/d0ra06580c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2020] [Accepted: 08/17/2020] [Indexed: 11/21/2022] Open
Abstract
A site-selective ruthenium-catalyzed keto group assisted C–H bond activation of 2-aryl tetrahydroquinoline (azaflavanone) derivatives has been achieved with a variety of alkenes for the first time. A wide range of substrates was utilized for the synthesis of a wide variety of alkenylated azaflavanones. This simple and efficient protocol provides the C5-substituted azaflavanone derivatives in high yields with a broad range of functional group tolerance. Further, the C5-alkenylated products were converted into substituted 2-aryl quinoline derivatives in good yields. A site-selective ruthenium-catalyzed keto group assisted C–H bond activation of 2-aryl tetrahydroquinoline (azaflavanone) derivatives has been achieved with a variety of alkenes for the first time.![]()
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Affiliation(s)
| | | | - Duddu S Sharada
- Department of Chemistry, Indian Institute of Technology Hyderabad Telangana-502285 India
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12
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Abstract
In this paper, an easy-operational, high-yielding method for the gram-scale synthesis of 3-sulfonyl flavanones is described by a one-pot straightforward POCl3 mediated intermolecular (5 + 1) annulation of the β-ketosulfones with an o-hydroxyaryl group (dual nucleophile) and arylaldehydes (dual electrophile) in refluxing toluene for 3 h. A plausible mechanism is proposed and discussed. This protocol provides a highly effective annulation via one carbon-oxygen (C-O) and one carbon-carbon (C-C) bond formations.
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Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan.,Department of Medical Research , Kaohsiung Medical University Hospital , Kaohsiung 807 , Taiwan
| | - Yu-Lin Tsai
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan
| | - Yu-Lun Chang
- Department of Medicinal and Applied Chemistry , Kaohsiung Medical University , Kaohsiung 807 , Taiwan
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13
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Manna SK, Das T, Samanta S. Polycyclic Benzimidazole: Synthesis and Photophysical Properties. ChemistrySelect 2019. [DOI: 10.1002/slct.201901941] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Affiliation(s)
| | - Tapas Das
- Department of ChemistryNIT Jamshedpur Jamshedpur 831014 India
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14
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Dhole S, Chiu W, Sun C. Catalyst‐Controlled Chemodivergent Annulation to Indolo/Pyrrolo‐Fused Diazepine and Quinoxaline. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900088] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Sandip Dhole
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 300-10 Taiwan
- Department of Chemistry, Chandmal Tarachand Bora CollegeUniversity of Pune, Maharashtra 412210 India
| | - Wei‐Jung Chiu
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 300-10 Taiwan
| | - Chung‐Ming Sun
- Department of Applied ChemistryNational Chiao Tung University Hsinchu 300-10 Taiwan
- Department of Medicinal and Applied ChemistryKaohsiung Medical University 100, Shih-Chuan 1st Road Kaohsiung 807-08 Taiwan
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15
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Abstract
The past decades have witnessed rapid development in organic synthesis via catalysis, particularly the reactions through C–H bond functionalization. Transition metals such as Pd, Rh and Ru constitute a crucial catalyst in these C–H bond functionalization reactions. This process is highly attractive not only because it saves reaction time and reduces waste,but also, more importantly, it allows the reaction to be performed in a highly region specific manner. Indeed, several organic compounds could be readily accessed via C–H bond functionalization with transition metals. In the recent past, tremendous progress has been made on C–H bond functionalization via ruthenium catalysis, including less expensive but more stable ruthenium(II) catalysts. The ruthenium-catalysed C–H bond functionalization, viz. arylation, alkenylation, annulation, oxygenation, and halogenation involving C–C, C–O, C–N, and C–X bond forming reactions, has been described and presented in numerous reviews. This review discusses the recent development of C–H bond functionalization with various ruthenium-based catalysts. The first section of the review presents arylation reactions covering arylation directed by N–Heteroaryl groups, oxidative arylation, dehydrative arylation and arylation involving decarboxylative and sp3-C–H bond functionalization. Subsequently, the ruthenium-catalysed alkenylation, alkylation, allylation including oxidative alkenylation and meta-selective C–H bond alkylation has been presented. Finally, the oxidative annulation of various arenes with alkynes involving C–H/O–H or C–H/N–H bond cleavage reactions has been discussed.
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16
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Mai S, Luo Y, Huang X, Shu Z, Li B, Lan Y, Song Q. Diversity-oriented synthesis of imidazo[2,1-a]isoquinolines. Chem Commun (Camb) 2018; 54:10240-10243. [PMID: 30069554 DOI: 10.1039/c8cc05390a] [Citation(s) in RCA: 52] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein, we report an efficient and practical strategy for the synthesis of five types of imidazo[2,1-a]isoquinolines via Cp*RhIII-catalyzed [4+2] annulation of 2-arylimidazoles and α-diazoketoesters, whose structural and substituted diversity at 5- or 6-position can be precisely controlled by the α-diazoketoester coupling partners. Compared with previous reports, in this study, we merged two attractive C-C cleavage strategies (retro-Claisen and decarboxylation) into the classical C-H functionalization/condensation process by choosing appropriate ester groups (-COOEt, -COOtBu or -COOiPr) or inexpensive additives (HOAc or KOAc). Moreover, the synthetic efficacies of these methods were demonstrated by the concise synthesis of several bioactive compounds and the late-stage modification of representative drugs.
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Affiliation(s)
- Shaoyu Mai
- Institute of Next Generation Matter Transformation, College of Chemical Engineering at Huaqiao University, 668 Jimei Blvd, Xiamen, Fujian 361021, P. R. China.
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17
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Chang MY, Wu YS, Chen HY. CuI-Mediated Synthesis of Sulfonyl Benzofuran-3-ones and Chroman-4-ones. Org Lett 2018. [DOI: 10.1021/acs.orglett.8b00316] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
- Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
| | - Yan-Shin Wu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
| | - Han-Yu Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan
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18
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Tang Z, Mai S, Zhou Y, Song Q. Divergent synthesis of α-aryl ketones/esters via rhodium-catalyzed selective deesterification and decarbonylation of diazo compounds. Org Chem Front 2018. [DOI: 10.1039/c8qo00619a] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A rhodium-catalyzed selective deesterification, decarbonylation and dual C–H activation of diazo compounds is presented.
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Affiliation(s)
- Zhonghe Tang
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering
- College of Materials Science & Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Shaoyu Mai
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering
- College of Materials Science & Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Yao Zhou
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering
- College of Materials Science & Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Chemical Engineering
- College of Materials Science & Engineering at Huaqiao University
- Xiamen
- P. R. China
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19
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Yu X, Chen K, Wang Q, Zhang W, Zhu J. Co(iii)-Catalyzed N-chloroamide-directed C–H activation for 3,4-dihydroisoquinolone synthesis. Org Chem Front 2018. [DOI: 10.1039/c7qo01124e] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
The first time synthesis of 3,4-dihydroisoquinolones via Co(iii)-catalyzed C–H activation at room temperature is described herein.
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Affiliation(s)
- Xiaolong Yu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing National Laboratory of Microstructures
- Collaborative Innovation Center of Chemistry for Life Sciences
| | - Kehao Chen
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing National Laboratory of Microstructures
- Collaborative Innovation Center of Chemistry for Life Sciences
| | - Qi Wang
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing National Laboratory of Microstructures
- Collaborative Innovation Center of Chemistry for Life Sciences
| | - Wenjing Zhang
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing National Laboratory of Microstructures
- Collaborative Innovation Center of Chemistry for Life Sciences
| | - Jin Zhu
- Department of Polymer Science and Engineering
- School of Chemistry and Chemical Engineering
- State Key Laboratory of Coordination Chemistry
- Nanjing National Laboratory of Microstructures
- Collaborative Innovation Center of Chemistry for Life Sciences
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