1
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Shuai S, Mao J, Zhou F, Yan Q, Chen L, Li J, Walsh PJ, Liang G. Base-Promoted Synthesis of Isoquinolines through a Tandem Reaction of 2-Methyl-arylaldehydes and Nitriles. J Org Chem 2024; 89:6793-6797. [PMID: 38691096 DOI: 10.1021/acs.joc.4c00123] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/03/2024]
Abstract
A convenient method for preparing 3-aryl isoquinolines via a base-promoted tandem reaction is presented. Simply combining commercially available 2-methyl-arylaldehydes, benzonitriles, NaN(SiMe3)2, and Cs2CO3 enabled the synthesis of a variety of isoquinolines (23 examples, ≤90% yield). Among the syntheses of isoquinolines, the transition metal-free method described here is straightforward, practical, and operationally simple.
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Affiliation(s)
- Sujuan Shuai
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 311399, China
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, P. R. China
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P. R. China
| | - Jianyou Mao
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University, 30 South Puzhu Road, Nanjing 211816, P. R. China
| | - Fan Zhou
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 311399, China
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, P. R. China
- College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, P. R. China
| | - Qifeng Yan
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 311399, China
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, P. R. China
| | - Lingfeng Chen
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 311399, China
| | - Jie Li
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 311399, China
- Department of Pharmacy, School of Medicine, Zhejiang University City College, No. 48, Huzhou Road, Hangzhou 310015, P. R. China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104-6323, United States
| | - Guang Liang
- School of Pharmaceutical Sciences, Hangzhou Medical College, Hangzhou, Zhejiang 311399, China
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2
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Ma P, Wang Y, Ma N, Wang J. Alkaline-Metal-Promoted Divergent Synthesis of 1-Aminoisoquinolines and Isoquinolines. J Org Chem 2024. [PMID: 38193431 DOI: 10.1021/acs.joc.3c02384] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2024]
Abstract
Alkaline-metal-promoted divergent syntheses of 1-aminoisoquinolines and isoquinolines have been reported involving 2-methylaryl aldehydes, nitriles, and LiN(SiMe3)2 as reactants. In addition, the three-component reaction of 2-methylaryl nitriles, aldehydes, and LiN(SiMe3)2 has been developed to furnish 1-aminoisoquinolines. This protocol features readily available starting materials, excellent chemoselectivity, broad substrate scope, and satisfactory yields.
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Affiliation(s)
- Peng Ma
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Yuhang Wang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Ning Ma
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Jianhui Wang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
- Collaborative Innovation Center of Chemical Science and Engineering, Tianjin University, Tianjin 300072, China
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3
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Choo MY, Khaw LWT, Chai CLL. Syntheses of Minutuminolate and Related Coumarin Natural Products and Evaluation of Their TNF-α Inhibitory Activities. ACS OMEGA 2023; 8:41785-41791. [PMID: 37970054 PMCID: PMC10633832 DOI: 10.1021/acsomega.3c06361] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/26/2023] [Accepted: 10/09/2023] [Indexed: 11/17/2023]
Abstract
The concise syntheses of the coumarin natural product, minutuminolate (1), and its related natural products, 7-methoxy-8-(2-acetoxy-3-methyl-1-oxobut-2-enyl) coumarin (2) and muralatin I (3), were accomplished for the first time in 4-5 steps from the commercially available umbelliferone. The key step involves a palladium-catalyzed oxidative rearrangement reaction to assemble the α-acyloxyenone moiety in 1 and 2. The incorporation of this functionality enables the successful synthesis of coumarin 3 through an acidic hydrolysis reaction. The anti-inflammatory activities of the compounds were also evaluated against tumor necrosis factor-alpha production in lipopolysaccharides-stimulated RAW264.7 cells. Our developed synthetic route will facilitate the development of analogues and derivatives of 1-3 with potent anti-inflammatory activities.
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Affiliation(s)
- Malcolm
Zheng Yuan Choo
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Singapore
| | - Lachelle Wei Ting Khaw
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Singapore
| | - Christina Li Lin Chai
- Department of Pharmacy, National University of Singapore, 18 Science Drive 4, Singapore, 117543, Singapore
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4
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Nikbakht A, Ebrahimi Valdani A, Zahedian Tejeneki H, Abbasi Kejani A, Alavijeh NS, Bauer F, Darvish F, Breit B, Balalaie S. A Diastereoselective Cascade Annulation Approach to Bridged Polycyclic Heterocycles Involving an Unexpected Rearrangement. Org Lett 2023; 25:16-20. [PMID: 36542429 DOI: 10.1021/acs.orglett.2c03629] [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]
Abstract
A diastereoselective cascade annulation between allenoates and in-situ generated isoquinoline N-oxides generating sp3-rich bridged polycyclic heterocycles is disclosed. The reaction proceeds through an unprecedented non-rearomatized rearrangement and allows access to a broad range of bridged heterocycles in 38-93% yields with excellent functional group tolerance and high diastereoselectivity. Density functional theory calculations provided key insights into the possible reaction pathway and the stereoselectivity of this procedure.
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Affiliation(s)
- Ali Nikbakht
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran 19697-64499, Iran
| | - Ahmadreza Ebrahimi Valdani
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran 19697-64499, Iran
| | - Hossein Zahedian Tejeneki
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran 19697-64499, Iran
| | - Alireza Abbasi Kejani
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran 19697-64499, Iran
| | - Nahid S Alavijeh
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran 19697-64499, Iran
| | - Felix Bauer
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany
| | - Fatemeh Darvish
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran 19697-64499, Iran
| | - Bernhard Breit
- Institut für Organische Chemie, Albert-Ludwigs-Universität Freiburg, Albertstrasse 21, 79104 Freiburg im Breisgau, Germany
| | - Saeed Balalaie
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, P.O. Box 15875-4416, Tehran 19697-64499, Iran.,Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah 6715847141, Iran
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5
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Ma P, Wang Y, Wang J. Copper-Catalyzed Domino Three-Component Benzannulation: Access to Isoquinolines. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Peng Ma
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Yuhang Wang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
| | - Jianhui Wang
- Department of Chemistry, School of Science, Tianjin University, Tianjin 300072, China
- Tianjin Key Laboratory of Molecular Optoelectronic Science, Collaborative Innovation Center of Chemical Science and Engineering, Tianjin 300072, China
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6
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Hosseinijei R, Zahedian Tejeneki H, Nikbakht A, Rominger F, Balalaie S. Synthesis of functionalized 1-aminoisoquinolines through cascade three-component reaction of ortho-alkynylbenzaldoximes, 2 H-azirines, and electrophiles. Org Biomol Chem 2022; 20:3076-3080. [PMID: 35352735 DOI: 10.1039/d2ob00275b] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We have developed a new three-component approach using ortho-alkynylbenzaldoximes involving the formation of a cyclic nitrone in the presence of Br2 or ICl for the synthesis of 1-aminoisoquinolines via cascade 6-endo-cyclization, 1,3-dipolar cycloaddition reaction with 2H-azirines, and ring-opening reaction sequences. The broad range of structurally diverse products, good to high yields, high atom-economy and high bond-formation efficiency make this method an attractive alternative for the synthesis of 1-aminoisoquinolines.
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Affiliation(s)
- Reyhaneh Hosseinijei
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran.
| | - Hossein Zahedian Tejeneki
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran.
| | - Ali Nikbakht
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran.
| | - Frank Rominger
- Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
| | - Saeed Balalaie
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran.
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7
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Yang X, Li S, Zhu Y, Lan Y. Theoretical study on mechanism of cycloaddition reaction between o-alkynylbenzaldoximes and hexynol catalyzed by silver(I). MOLECULAR CATALYSIS 2022. [DOI: 10.1016/j.mcat.2022.112227] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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8
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Zi Q, Li M, Cong J, Deng G, Duan S, Yin M, Chen W, Jing H, Yang X, Walsh PJ. Super-Electron-Donor 2-Azaallyl Anions Enable Construction of Isoquinolines. Org Lett 2022; 24:1786-1790. [PMID: 35212552 DOI: 10.1021/acs.orglett.2c00140] [Citation(s) in RCA: 11] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
Herein is introduced the application of "super-electron-donor"(SED) 2-azaallyl anions in a tandem reduction/radical cyclization/radical coupling/aromatization protocol that enables the rapid construction of isoquinolines. The value of this transition-metal-free method is highlighted by the wide range of isoquinoline ethyl amines prepared with good functional group tolerance and yields. An operationally simple gram scale synthesis is also conducted, confirming the scalability.
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Affiliation(s)
- Quanxing Zi
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Minyan Li
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Jielun Cong
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Guogang Deng
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Shengzu Duan
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Meng Yin
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Wen Chen
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Hong Jing
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Xiaodong Yang
- Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Education; Yunnan Provincial Center for Research & Development of Natural Products; School of Chemical Science and Technology, Yunnan University, Kunming, 650091, P. R. China
| | - Patrick J Walsh
- Roy and Diana Vagelos Laboratories, Penn/Merck Laboratory for High-Throughput Experimentation, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
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9
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Alatat K, Abbasi Kejani A, Nikbakht A, Bijanzadeh HR, Balalaie S. A metal-free tandem dehydrogenative α-arylation reaction of propargylic alcohols with 2-alkynylbenzaldoximes toward the synthesis of α-(4-bromo-isoquinolin-1-yl)-propenone skeletons. Org Biomol Chem 2022; 20:579-583. [PMID: 34985097 DOI: 10.1039/d1ob02114a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tandem reaction of 2-alkynylbenzaldoximes with propargylic alcohols has been developed for the synthesis of α-(4-bromo-isoquinolin-1-yl)-propenones. Employing 2-alkynylbenzaldoximes as a precursor in the presence of Br2 generates 4-bromo-isoquinoline-N-oxides. Subsequently, dehydroxylation of propargylic alcohols gives carbocation intermediates, which are trapped using the N-oxides, affording aryl-substituted α-enones.
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Affiliation(s)
- Khalil Alatat
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran.
| | - Alireza Abbasi Kejani
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran.
| | - Ali Nikbakht
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran.
| | - Hamid Reza Bijanzadeh
- Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, Tehran, Iran
| | - Saeed Balalaie
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P. O. Box 15875-4416, Tehran, Iran. .,Medical Biology Research Center, Kermanshah University of Medical Sciences, Kermanshah, Iran
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10
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Cai Z, Feng X, Zhang Y, Lu C, Han Y, Zhao J. Transition‐Metal‐Free
Catalyzed Dehydrative Coupling of Quinoline and Isoquinoline
N
‐Oxides
with Propargylic Alcohols. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202100687] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Zhao‐Nan Cai
- School of Chemical Engineering and Technology, Hebei University of Technology Tianjin 300130 China
| | - Xiang‐Xuan Feng
- School of Chemical Engineering and Technology, Hebei University of Technology Tianjin 300130 China
| | - Yuecheng Zhang
- School of Chemical Engineering and Technology, Hebei University of Technology Tianjin 300130 China
| | - Cong‐Cong Lu
- School of Chemical Engineering and Technology, Hebei University of Technology Tianjin 300130 China
| | - Ya‐Ping Han
- School of Chemical Engineering and Technology, Hebei University of Technology Tianjin 300130 China
| | - Jiquan Zhao
- School of Chemical Engineering and Technology, Hebei University of Technology Tianjin 300130 China
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11
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Cui H, Bai J, Ai T, Zhan Y, Li G, Rao H. Selective Phosphoranation of Unactivated Alkynes with Phosphonium Cation To Achieve Isoquinoline Synthesis. Org Lett 2021; 23:4023-4028. [DOI: 10.1021/acs.orglett.1c01237] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Hong Cui
- Department of Chemistry, Capital Normal University, Beijing 100048, People’s Republic of China
| | - Jinku Bai
- Department of Chemistry, Capital Normal University, Beijing 100048, People’s Republic of China
| | - Tianyu Ai
- Department of Chemistry, Capital Normal University, Beijing 100048, People’s Republic of China
| | - Ye Zhan
- Department of Chemistry, Capital Normal University, Beijing 100048, People’s Republic of China
| | - Guanzhong Li
- Department of Chemistry, Capital Normal University, Beijing 100048, People’s Republic of China
| | - Honghua Rao
- Department of Chemistry, Capital Normal University, Beijing 100048, People’s Republic of China
- Key Laboratory of Bioorganic Phosphorus Chemistry and Chemical Biology (Ministry of Education), Department of Chemistry, Tsinghua University, Beijing 100084, People’s Republic of China
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12
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Hayatgheybi S, Khosravi H, Zahedian Tejeneki H, Rominger F, Bijanzadeh HR, Balalaie S. Synthesis of N-(Isoquinolin-1-yl)sulfonamides via Ag 2O-Catalyzed Tandem Reaction of ortho-Alkynylbenzaldoximes with Benchtop Stabilized Ketenimines. Org Lett 2021; 23:3524-3529. [PMID: 33851841 DOI: 10.1021/acs.orglett.1c00937] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
In this project, a moderately efficient approach to multisubstituted N-(isoquinolin-1-yl)sulfonamide derivatives was illustrated, utilizing ortho-alkynylbenzaldoximes and zwitterionic ketenimine salts in a tandem reaction catalyzed by silver oxide. The oxophilicity of Ag2O, along with its nature as Lewis acid, pave the way for a smooth [3 + 2] cycloaddition between isoquinoline N-oxides and ketenimine species, which is a key step in this reaction. DFT calculation suggests that 1,3-dipolar cycloaddition of nitrone and ketenimine proceeds through a selective stepwise mechanism.
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Affiliation(s)
- Sepideh Hayatgheybi
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697-64499 Tehran, Iran
| | - Hormoz Khosravi
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697-64499 Tehran, Iran
| | - Hossein Zahedian Tejeneki
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697-64499 Tehran, Iran
| | - Frank Rominger
- Organisch-Chemisches Institut der Universitaet Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany
| | - Hamid Reza Bijanzadeh
- Department of Environmental Sciences, Faculty of Natural Resources and Marine Sciences, Tarbiat Modares University, 14117-13116 Tehran, Iran
| | - Saeed Balalaie
- Peptide Chemistry Research Institute, K. N. Toosi University of Technology, P.O. Box 15875-4416, 19697-64499 Tehran, Iran.,Medical Biology Research Center, Kermanshah University of Medical Sciences, 67158-47141 Kermanshah, Iran
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13
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Hsueh NC, Chen SM, Lin CY, Chang MY. HCl-mediated cascade cyclocondensation of oxygenated arylacetic acids with arylaldehydes: one-pot synthesis of 1-arylisoquinolines. Org Biomol Chem 2021; 19:1047-1059. [PMID: 33416066 DOI: 10.1039/d0ob02431g] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
In this paper, a concise, open-vessel synthesis of 1-arylisoquinolines is described via HCl-mediated intermolecular cyclocondensation of oxygenated arylacetic acids with arylaldehydes in the presence of NH2OH and alcoholic solvents under mild and one-pot reaction conditions. A plausible mechanism is proposed and discussed herein. In the overall reaction process, only water was generated as the byproduct. Various environmentally friendly reaction conditions are investigated for convenient transformation via the (4C + 1C + 1N) annulation. This protocol provides a highly effective ring closure via the formations of one carbon-carbon (C-C) bond, two carbon-nitrogen (C-N) bonds and one carbon-oxygen (C-O) bond.
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Affiliation(s)
- Nai-Chen Hsueh
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Shin-Mei Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Chun-Yi Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan.
| | - Meng-Yang Chang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 807, Taiwan. and Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 807, Taiwan
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14
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Gujjarappa R, Vodnala N, Malakar CC. Comprehensive Strategies for the Synthesis of Isoquinolines: Progress Since 2008. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000658] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Raghuram Gujjarappa
- Department of Chemistry National Institute of Technology Manipur Imphal 795004 Manipur India
| | - Nagaraju Vodnala
- Department of Chemistry National Institute of Technology Manipur Imphal 795004 Manipur India
| | - Chandi C. Malakar
- Department of Chemistry National Institute of Technology Manipur Imphal 795004 Manipur India
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15
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Tejeneki HZ, Nikbakht A, Balalaie S, Rominger F. Regio- and Diastereoselective Indium-Catalyzed Conia-Ene Reaction of ortho-Alkynyl Diketopiperazines to Access Fused Diketopiperazinoindolines. J Org Chem 2020; 85:8544-8552. [PMID: 32539419 DOI: 10.1021/acs.joc.0c00895] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
An efficient synthesis of diketopiperazinoindolines through an indium-catalyzed intramolecular 5-exo-dig cyclization of ortho-alkynyl diketopiperazines has been reported. The formation of diketopiperazinoindolines proceeds via a regio- and diastereoselective Conia-ene reaction. This synthetic method opens a new door for easy access to functionalized fused diketopiperazinoindolines in high to excellent yields with exclusive Z diastereoselectivity.
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Affiliation(s)
- Hossein Zahedian Tejeneki
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, PO Box 15875-4416 Tehran, Iran
| | - Ali Nikbakht
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, PO Box 15875-4416 Tehran, Iran
| | - Saeed Balalaie
- Peptide Chemistry Research Center, K. N. Toosi University of Technology, PO Box 15875-4416 Tehran, Iran.,Medical Biology Research Center, Kermanshah University of Medical Sciences, 6715847141 Kermanshah, Iran
| | - Frank Rominger
- Organisch-Chemisches Institut der Universität Heidelberg, Im Neuenheimer Feld 270, D-69120 Heidelberg, Germany
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16
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Opsomer T, Van Hoof M, D’Angelo A, Dehaen W. 1,2,3-Triazole-Mediated Synthesis of 1-Methyleneisoquinolines: A Three-Step Synthesis of Papaverine and Analogues. Org Lett 2020; 22:3596-3600. [DOI: 10.1021/acs.orglett.0c01069] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Affiliation(s)
- Tomas Opsomer
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Max Van Hoof
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Andrea D’Angelo
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, 3001 Leuven, Belgium
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