1
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Arandhara PJ, Chutia A, Biswas S, Saikia AK. A Lewis Acid-Catalyzed Cascade Synthesis of Fused N-Heterocycles from 2-Alkynylanilines and 2-Formylbenzonitriles: Unveiling Iminoisoindoloindolone and Its Derivatives. J Org Chem 2024; 89:12128-12142. [PMID: 39172136 DOI: 10.1021/acs.joc.4c01038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/23/2024]
Abstract
We herein reveal a streamlined synthesis of structurally fused 6-iminoisoindoloindolones via a meticulously orchestrated cascade reaction. This process seamlessly intertwines 2-alkynylaniline and 2-formylbenzonitrile under the catalytic influence of TMSOTf, giving rise to these compounds in remarkable yields that stand as a testament to the efficiency of our approach. Moreover, the versatility of this synthetic strategy extends far beyond mere synthesis, offering a gateway to the creation of both isoindoloindolone and unprecedented diphenylbenzopyrrolizinoisoquinolinone derivatives, thereby opening new horizons in the realm of chemical innovation. Furthermore, the strategic elegance of this synthetic methodology is underscored by its potential for scale-up production and applicability across diverse chemical contexts.
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Affiliation(s)
- Pallav Jyoti Arandhara
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Archana Chutia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Subhamoy Biswas
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
| | - Anil K Saikia
- Department of Chemistry, Indian Institute of Technology Guwahati, Guwahati 781039, India
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2
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Scarpa de Souza EL, Gorbatov SA, Pierozzi BM, Batista Junior JM, Duarte Correia CR. Enantioselective Synthesis of Dihydrobenzofurans, Dihydrobenzosulfones, and Dihydroindoles by Merging One-pot Intramolecular Heck-Matsuda Reactions from Anilines with Redox-Relay Process. Chemistry 2024; 30:e202401115. [PMID: 38801751 DOI: 10.1002/chem.202401115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/19/2024] [Revised: 05/26/2024] [Accepted: 05/27/2024] [Indexed: 05/29/2024]
Abstract
A one-pot tandem process was developed aiming at the concise and expeditious enantioselective synthesis of dihydrobenzofuran, dihydrobenzosulfone, and dihydroindole scaffolds under mild, and open-flask conditions. This process combines the in situ generation of aryldiazonium salt directly from the anilines in methanol telescoped to an intramolecular Heck-Matsuda reaction linked to a redox relay process to provide the final products as the dimethyl acetals. These Heck products were smoothly converted into the corresponding primary alcohols or esters. The robustness and the efficiency of the protocol are demonstrated by the synthesis of 24 enantioenriched dihydrobenzofurans, dihydrobenzosulfones, and dihydroindoles in overall yields up to 78 % in enantiomeric ratios up to 99 : 1 by a sequential 5-step protocol.
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Affiliation(s)
| | | | - Breno Mendes Pierozzi
- Department of Organic Chemistry, University of Campinas, Rua Josué de Castro, 10384-612, Campinas, São Paulo, Brazil
| | - João Marcos Batista Junior
- Institute of Science and Technology, Federal University of São Paulo, Rua Talim, 330, 12231-280, São José dos Campos, São Paulo, Brazil
| | - Carlos Roque Duarte Correia
- Department of Organic Chemistry, University of Campinas, Rua Josué de Castro, 10384-612, Campinas, São Paulo, Brazil
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3
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Guo H, Tian Y, Wu X, Tu L, Liu J, Zheng Y, Huang R. Efficient assembly and anti-tumor evaluation of novel polycyclic [1,2-a]-fused indoles. Bioorg Chem 2024; 146:107289. [PMID: 38493636 DOI: 10.1016/j.bioorg.2024.107289] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2023] [Revised: 02/21/2024] [Accepted: 03/13/2024] [Indexed: 03/19/2024]
Abstract
Structurally diverse cyclopenta[4,5]pyrrolo[1,2-a]indoles heterocycles were smoothly constructed in good to excellent yields (up to 99 %) with excellent diastereoselectivities (>19:1 dr) through a novel and facile strategy based on BF3-catalyzed Friedel-Crafts alkylation/Aldol/Dehydrative cyclization cascade reaction. The anti-proliferative activity of these newly synthesized polycyclic indoles was screened, and all the functionalized reductive derivatives exhibited favorable anti-tumor activity. Notably, compound 4ae displayed the remarkable inhibitory activity against MCF-7 and HeLa cells with IC50 values of 4.62 μM and 7.71 μM, respectively. Mechanistically, the representative compound 4ae could effectively induce apoptosis of MCF-7 cells in crediting to up-regulate the relative expression of apoptotic protein BAX/Bcl-2, subsequently activate Pro-caspase 9 and cleave PARP, simultaneously block the cell cycle through down- and up-regulate the expression of cyclin B1 and p53, respectively. Moreover, compound 4ae also exhibited promising antineoplastic efficacy in subcutaneous MCF-7 xenograft mice which manifest significant shrunken tumors conspicuous nuclear apoptotic signal and minimal systemic toxicity. This strategy not only established a novel and efficient method for the assembly of structurally complex indole heterocycles, but also provided a series of compounds possessing attractive anti-cancer activity, which holds immense potential for future biomedical applications.
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Affiliation(s)
- Hui Guo
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Yuqi Tian
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Xing Wu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Liang Tu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China
| | - Jikai Liu
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China.
| | - Yongsheng Zheng
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China.
| | - Rong Huang
- The Modernization Engineering Technology Research Center of Ethnic Minority Medicine of Hubei Province, School of Pharmaceutical Sciences, South-Central Minzu University, Wuhan 430074, PR China.
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4
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Gharpure SJ, Chavan RS, Narang SR. Iron-Mediated Hydrogen Atom Transfer Radical Cyclization of Alkenyl Indoles and Pyrroles Gives Their Fused Derivatives: Total Synthesis of Bruceolline E and H. Org Lett 2024. [PMID: 38341858 DOI: 10.1021/acs.orglett.4c00032] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/13/2024]
Abstract
The iron-mediated hydrogen atom transfer (HAT) reaction is efficaciously employed for the synthesis of dihydropyrroloindoles and dihydropyrrolizines via 5-exo-trig radical cyclization where indoles and pyrroles are used as an acceptor. This radical approach has also been extended for the synthesis of tetrahydrocyclopenta[b]indolones via the Baldwin-disfavored 5-endo-trig cyclization pathway. The formal synthesis of bruceolline J and the total synthesis of bruceollines E and H have been expeditiously carried out by employing the former strategy.
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Affiliation(s)
- Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Rupali S Chavan
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
| | - Simran R Narang
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India
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5
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Liu L, Zhang Y, Zhao W, Li J. Electron Donor-Acceptor Complex Induced Fused Indoles with Hypervalent Iodine(III) Reagents. Org Lett 2023; 25:6251-6255. [PMID: 37607047 DOI: 10.1021/acs.orglett.3c02009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/24/2023]
Abstract
An operationally simple and efficient method for the cyclization of tertiary amines and hypervalent iodine reagents enabled by an EDA complex has been developed. A series of [1,2-α]indoles derivatives were obtained in good yields, including some key intermediates for the synthesis of biologically active molecules. In addition, this established strategy features a broad substrate scope and good functional group tolerance.
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Affiliation(s)
- Li Liu
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
| | - Yage Zhang
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
| | - Wenyan Zhao
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
| | - Jian Li
- School of Pharmacy, Analysis and Testing Center, NERC Biomass of Changzhou University, Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, Changzhou University, Changzhou, 213164, China
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6
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Shelke YG, Hande PE, Gharpure SJ. Recent advances in the synthesis of pyrrolo[1,2- a]indoles and their derivatives. Org Biomol Chem 2021; 19:7544-7574. [PMID: 34524330 DOI: 10.1039/d1ob01103k] [Citation(s) in RCA: 21] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
The pyrrolo[1,2-a]indole unit is a privileged heterocycle found in numerous natural products and has been shown to exhibit diverse pharmacological properties. Thus, recent years have witnessed immense interest from the synthesis community on the synthesis of this scaffold. In light of the ever-increasing demand for pyrrolo[1,2-a]indoles in drug discovery, this review provides an overview of recent synthesis methods for the preparation of pyrrolo[1,2-a]indoles and their derivatives. The mechanistic pathway and stereo-electronic factors affecting the yield and selectivity of the product are briefly explained. Furthermore, we have attempted to demonstrate the utility of the developed methods in the synthesis of bioactive molecules and natural products, wherever offered.
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Affiliation(s)
- Yogesh G Shelke
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Pankaj E Hande
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
| | - Santosh J Gharpure
- Department of Chemistry, Indian Institute of Technology Bombay, Powai, Mumbai-400076, India.
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7
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Kishore DR, Shekhar C, Satyanarayana G. Lewis Acid Mediated Domino Intramolecular Cyclization: Synthesis of Dihydrobenzo[ a]fluorenes. J Org Chem 2021; 86:8706-8725. [PMID: 34110165 DOI: 10.1021/acs.joc.1c00525] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An efficient and facile method for the regioselective synthesis of novel dihydrobenzo[a]fluorenes from readily accessible alkynols is presented. The current strategy triggers the formation of a dual C-C bond intramolecularly via Lewis acid catalysis under mild reaction conditions. Notably, secondary as well as tertiary alcohols bearing an alkyne moiety have been smoothly transformed into the corresponding products. As a result, novel tetracyclic dihydrobenzo[a]fluorenes have been accomplished using this approach.
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Affiliation(s)
- Dakoju Ravi Kishore
- Department of Chemistry, Indian Institute of Technology (IIT) Hyderabad, Kandi 502 285, Sangareddy District, Telangana, India
| | - Chander Shekhar
- Department of Chemistry, Indian Institute of Technology (IIT) Hyderabad, Kandi 502 285, Sangareddy District, Telangana, India
| | - Gedu Satyanarayana
- Department of Chemistry, Indian Institute of Technology (IIT) Hyderabad, Kandi 502 285, Sangareddy District, Telangana, India
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8
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Gharpure SJ, Nanda SK, Fartade DJ. Formal [4+2] Cycloaddition of
o
‐
Aza
‐Quinone Methide for the Synthesis of 1,4‐Heterocycle‐Fused Quinolines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100074] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
| | - Santosh K. Nanda
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
| | - Dipak J. Fartade
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
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9
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Zhai G, Liu X, Ma W, Wang G, Yang L, Li S, Wu Y, Hu X. B(C 6 F 5 ) 3 -Catalyzed Tandem Friedel-Crafts and C-H/C-O Coupling Reactions of Dialkylanilines. Chem Asian J 2020; 15:3082-3086. [PMID: 32770729 DOI: 10.1002/asia.202000763] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2020] [Revised: 07/30/2020] [Indexed: 11/11/2022]
Abstract
Tandem Friedel-Crafts (FC) and C-H/C-O coupling reactions catalyzed by tris(pentafluorophenyl) borane (B(C6 F5 )3 ) were achieved without using any other additive in the absence of solvent. This process can be used for the reactions between a series of dialkylanilines and vinyl ethers with good isolated yields of bis(4-dialkylaminophenyl) compounds. Based on combined theoretical and experimental studies, the possible reaction mechanism was proposed. B(C6 F5 )3 can activate the C=C and C-O bond for FC and C-H/C-O coupling reactions respectively. The FC reaction is slow, which is followed by a fast C-H/C-O coupling.
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Affiliation(s)
- Gaowen Zhai
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Xueting Liu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Wentao Ma
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Guoqiang Wang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Liu Yang
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Shuhua Li
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Youting Wu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
| | - Xingbang Hu
- School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, P. R. China
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10
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Khan HPA, Chakraborty TK. Application of Cp 2TiCl-Promoted Radical-Induced Cyclization: An Expeditious Access to [ a]-Annelated Indoles. J Org Chem 2020; 85:8000-8012. [PMID: 32469214 DOI: 10.1021/acs.joc.0c00817] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
An efficient and novel route for assembling pyrrolo/piperido[1,2-a]indoles is portrayed involving a radical-mediated reductive epoxide opening reaction of N-tethered epoxy-indoles that trigger facile intramolecular cyclization followed by an oxidative quenching step. Capitalizing on the operational simplicity of the method involving just two steps and use of an efficient C-C bond-forming reaction, this radical-based protocol enables the modular assembly of an important class of N-fused indole derivatives with versatile functional and structural diversity.
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Affiliation(s)
- Hina P A Khan
- Department of Organic Chemistry, Indian Institute of Science, Bengaluru 560012, India
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11
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Bhat AH, Alavi S, Grover HK. Tandem Carbenoid C-H Functionalization/Conia-ene Cyclization of N-Propargyl Indoles Generates Pyrroloindoles under Cooperative Rh(II)/Zn(II) Catalysis. Org Lett 2020; 22:224-229. [PMID: 31854993 DOI: 10.1021/acs.orglett.9b04210] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
The decomposition of diazodicarbonyl compounds in the presence of various metal catalysts has become a reliable method for the functionalization of indoles via carbenoid intermediates. Exploiting the nucleophilic reactivity of the in situ generated malonic ester product formed, we herein report a tandem C-H functionalization/Conia-ene cyclization of N-alkyne tethered indoles. This double functionalization of diazodicarbonyls generates a range of pyrrolo[1,2-a]-, pyrido[1,2-a]-, and azepino[1,2-a]indole products with good synthetic efficiency.
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Affiliation(s)
- Aabid H Bhat
- Department of Chemistry , Memorial University of Newfoundland , St. John's , Newfoundland A1B 3X7 , Canada
| | - Sima Alavi
- Department of Chemistry , Memorial University of Newfoundland , St. John's , Newfoundland A1B 3X7 , Canada
| | - Huck K Grover
- Department of Chemistry , Memorial University of Newfoundland , St. John's , Newfoundland A1B 3X7 , Canada
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12
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Gao Y, Li J, Bai S, Tu D, Yang C, Ye Z, Hu B, Qi X, Jiang C. Direct synthesis of annulated indoles through palladium-catalyzed double alkylations. Org Chem Front 2020. [DOI: 10.1039/d0qo00135j] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
A facile, one-step synthesis of annulated indoles from (N–H) indoles and dibromoalkanes was developed through a palladium-catalyzed double alkylation process.
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Affiliation(s)
- Yadong Gao
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
- National Institute of Biological Sciences
| | - Jianhua Li
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
| | - Songlin Bai
- National Institute of Biological Sciences
- Beijing 102206
- P. R. China
| | - Daoquan Tu
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
| | - Chao Yang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
- National Institute of Biological Sciences
| | - Zhiwen Ye
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
| | - Bingcheng Hu
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
| | - Xiangbing Qi
- National Institute of Biological Sciences
- Beijing 102206
- P. R. China
- Tsinghua Institute of Multidisciplinary Biomedical Research
- Tsinghua University
| | - Chao Jiang
- School of Chemical Engineering
- Nanjing University of Science and Technology
- Nanjing 210094
- P. R. China
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13
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Gharpure SJ, Vishwakarma DS. Lewis Acid Catalyzed Intramolecular [4+2] Cycloaddition of In Situ Generated Aza‐Quinone Methides for the Stereoselective Synthesis of Furo/pyrano[3,2‐
c
]tetrahydroquinolines. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901598] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Santosh J. Gharpure
- Department of Chemistry Indian Institute of Technology Bombay Powai 400076 Mumbai – India
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14
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Cao W, Fan J, Yan L, Zeng G, Ma J, Wang Y, Zhou Y, Deng X. Divergent Reactivity in CuII-Catalyzed Oxidative Coupling between Indole/Tryptamine Derivatives and β-Arylacrylic Acids. Org Lett 2019; 21:9506-9511. [DOI: 10.1021/acs.orglett.9b03697] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Wei Cao
- Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, Hunan, China
| | - Jinbao Fan
- Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, Hunan, China
| | - Linyang Yan
- Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, Hunan, China
| | - Guangyao Zeng
- Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, Hunan, China
| | - Jinjin Ma
- Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, Hunan, China
| | - Yajing Wang
- Hunan University of Chinese Medicine, Changsha, 410028, Hunan, China
| | - Yingjun Zhou
- Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, Hunan, China
| | - Xu Deng
- Xiangya School of Pharmaceutical Science, Central South University, Changsha 410013, Hunan, China
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15
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Liu A, Han Q, Zhang X, Li B, Huang Q. Transition-Metal-Controlled Synthesis of 11H-Benzo[a]carbazoles and 6-Alkylidene-6H-isoindo[2,1-a]indoles via Sequential Intermolecular/Intramolecular Cross-Dehydrogenative Coupling from 2-Phenylindoles. Org Lett 2019; 21:6839-6843. [DOI: 10.1021/acs.orglett.9b02476] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Anyi Liu
- Fujian Key Laboratory of Polymer Materials, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Qingshuai Han
- Fujian Key Laboratory of Polymer Materials, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Xiaofeng Zhang
- Fujian Key Laboratory of Polymer Materials, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Buhong Li
- MOE Key Laboratory of Optoelectronic Science and Technology for Medicine, Fujian Key Laboratory for Photonics Technology, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
| | - Qiufeng Huang
- Fujian Key Laboratory of Polymer Materials, College of Chemistry & Materials Science, Fujian Normal University, Fuzhou, Fujian 350007, P.R. China
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16
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Ge C, Wang G, Wu P, Chen C. Synthesis of Naphthalenyl Triflates via the Cationic Annulation of Benzodiynes with Triflic Acid. Org Lett 2019; 21:5010-5014. [DOI: 10.1021/acs.orglett.9b01590] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Chenxin Ge
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Guohua Wang
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
| | - Panpan Wu
- School of Chemical & Environmental Engineering, Wuyi University, Jiangmen 529000, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529000, China
| | - Chao Chen
- Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, China
- School of Chemical & Environmental Engineering, Wuyi University, Jiangmen 529000, China
- International Healthcare Innovation Institute (Jiangmen), Jiangmen 529000, China
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17
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Xie X, Li P, Wang L. Synthesis of 2-Sulfonated-9H
-Pyrrolo[1,2-a
]indoles via a Ag-Promoted Cascade Sulfonation and Cyclization. European J Org Chem 2018. [DOI: 10.1002/ejoc.201801510] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Xiaoyu Xie
- Department of Chemistry; Huaibei Normal University; 235000 Huaibei, Anhui P. R. China
| | - Pinhua Li
- Department of Chemistry; Huaibei Normal University; 235000 Huaibei, Anhui P. R. China
| | - Lei Wang
- Department of Chemistry; Huaibei Normal University; 235000 Huaibei, Anhui P. R. China
- State Key Laboratory of Organometallic Chemistry; Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 200032 Shanghai P. R. China
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18
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Li T, Yang P. Au(I)-Catalyzed Access to 1H-Pyrrolo[1,2-a]indol-2(3-H)-ones via Oxidation of Terminal Alkynes. J Org Chem 2018; 83:14751-14757. [DOI: 10.1021/acs.joc.8b02276] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Ting Li
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Ping Yang
- College of Chemistry and Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
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19
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Kotipalli T, Hou DR. Synthesis of Indenes by a BF3·OEt2-Mediated, One-Pot Reaction of Aryl Homopropargyl Alcohols, Aldehydes, and Arenes. Org Lett 2018; 20:4787-4790. [DOI: 10.1021/acs.orglett.8b01929] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Trimurtulu Kotipalli
- Department of Chemistry, National Central University, No. 300 Jhong-Da Road, Jhong-li, Taoyuan 32001, Taiwan
| | - Duen-Ren Hou
- Department of Chemistry, National Central University, No. 300 Jhong-Da Road, Jhong-li, Taoyuan 32001, Taiwan
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Caiuby CAD, Ali A, Santana VT, de S Lucas FW, Santos MS, Corrêa AG, Nascimento OR, Jiang H, Paixão MW. Intramolecular radical cyclization approach to access highly substituted indolines and 2,3-dihydrobenzofurans under visible-light. RSC Adv 2018; 8:12879-12886. [PMID: 35541239 PMCID: PMC9079632 DOI: 10.1039/c8ra01787e] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2018] [Accepted: 03/21/2018] [Indexed: 11/29/2022] Open
Abstract
The combination of visible-light and tris(trimethylsilyl)silane promoting intramolecular reductive cyclization protocol for the synthesis of functionalized indolines and 2,3-dihydrobenzofurans has been developed. The transformations occur in the absence of transition metal and additional photocatalyst. In addition, quantum yield (Φ) was determined and electron paramagnetic resonance spectroscopy was performed to better understand the reaction pathway.
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Affiliation(s)
- Clarice A D Caiuby
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar Rodovia Washington Luís, km 235 - SP-310 São Carlos São Paulo Brazil 13565-905
| | - Akbar Ali
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar Rodovia Washington Luís, km 235 - SP-310 São Carlos São Paulo Brazil 13565-905
| | - Vinicius T Santana
- Group of Molecular Biophysics "Sérgio Mascarenhas", São Carlos Institute of Physics - IFSC/USP, University of São Paulo Avenida Trabalhador São Carlense, 400 São Carlos SP 13560-970 Brazil
| | - Francisco W de S Lucas
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar Rodovia Washington Luís, km 235 - SP-310 São Carlos São Paulo Brazil 13565-905
| | - Marilia S Santos
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar Rodovia Washington Luís, km 235 - SP-310 São Carlos São Paulo Brazil 13565-905
| | - Arlene G Corrêa
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar Rodovia Washington Luís, km 235 - SP-310 São Carlos São Paulo Brazil 13565-905
| | - Otaciro R Nascimento
- Group of Molecular Biophysics "Sérgio Mascarenhas", São Carlos Institute of Physics - IFSC/USP, University of São Paulo Avenida Trabalhador São Carlense, 400 São Carlos SP 13560-970 Brazil
| | - Hao Jiang
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar Rodovia Washington Luís, km 235 - SP-310 São Carlos São Paulo Brazil 13565-905
| | - Márcio W Paixão
- Center of Excellence for Research in Sustainable Chemistry (CERSusChem), Department of Chemistry, Federal University of São Carlos - UFSCar Rodovia Washington Luís, km 235 - SP-310 São Carlos São Paulo Brazil 13565-905
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