1
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Lei Y, Bao L, Hu Q, Zhang K, Zong L, Hu Y. Ferrocenyl conjugated oxazepines/quinolines: multiyne coupling and ring-expanding or rearrangement. Front Chem 2024; 12:1441539. [PMID: 39144699 PMCID: PMC11322062 DOI: 10.3389/fchem.2024.1441539] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2024] [Accepted: 07/10/2024] [Indexed: 08/16/2024] Open
Abstract
Ferrocenyl conjugated oxazepine/quinoline derivatives were presented through the reaction of hexadehydro-Diels-Alder (HDDA) generated arynes with ferrocenyl oxazolines under mild conditions via ring-expanding or rearrangement processes. Water molecule participated in this unexpected rearrangement process to produce quinoline skeletons, and DFT calculations supported a ring-expanding and intramolecular hydrogen migration process for the formation of oxazepine derivatives. Two variants of this chemistry, expanded the reactivity between ferrocenyl conjugated substances and arynes, further providing an innovative approach for the synthesis of ferrocene derivatives.
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Affiliation(s)
| | | | | | | | | | - Yimin Hu
- College of Chemistry and Materials Science, Anhui Normal University, Wuhu, China
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2
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V R PP, Mercy A AH, K N, S R, Nandi GC. 1,2-Difunctionalization of Aryne with Sulfenamide and Organohalide: Mild and Metal-Free Access to S-( o-Halo)aryl Sulfilimine. J Org Chem 2024; 89:9043-9050. [PMID: 38842348 DOI: 10.1021/acs.joc.4c00296] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/07/2024]
Abstract
A mild and metal-free approach has been developed for 1,2-difunctionalization of aryne using sulfenamides as a nucleophile and a halogen source (CX4) as an electrophile to synthesize S-(o-halo)aryl sulfilimines. The late-stage functionalizations of halide handles via Suzuki-Miyaura and Buchwald-Hartwig reactions exhibit the synthetic utilities of the products. The chemoselectivity, regioselectivity, rapidity, and use of economical CCl4 are the advantages of this protocol.
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Affiliation(s)
- Padma Priya V R
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India
| | - Antony Haritha Mercy A
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India
| | - Natarajan K
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India
| | - Ravindra S
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India
| | - Ganesh Chandra Nandi
- Department of Chemistry, National Institute of Technology, Tiruchirappalli, Tamil Nadu 620015, India
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3
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Wang Z, Huang S, Yin L, Wan J, Liu C, Liu T, Huang C. Chemodivergence in Fluorine Source-Controlled Cascade Reaction of Aryne Precursors to Synthesize Pyrrolo[3,4- b]indoles and 3-Arylated Maleimides. J Org Chem 2024; 89:5498-5510. [PMID: 38577943 DOI: 10.1021/acs.joc.3c02961] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
Reactions allowing chemodivergence prove to be attractive strategies in synthetic organic chemistry. We herein described a highly practical, transition-metal-free, highly regioselective and chemodivergent cascade reaction controlled by fluorine sources, which involved a [3 + 2] cycloaddition or C-arylation process between aryne precursors and 3-aminomaleimides. These two pathways led to a wide scope of structurally diverse pyrrolo[3,4-b]indoles (19 examples) and 3-arylated maleimides (25 examples) in good-to-excellent yields. Furthermore, the reaction could be scaled up, and several synthetic transformations were accomplished for the preparation of functionalized molecules and might provide new opportunities for the discovery of N-heterocyclic drugs.
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Affiliation(s)
- Zhuoyu Wang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Shuntao Huang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Lu Yin
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Juan Wan
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P. R. China
| | - Cheng Liu
- School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'An, Jiangxi 343009, P. R. China
| | - Teng Liu
- School of Chemistry and Chemical Engineering, Jinggangshan University, Ji'An, Jiangxi 343009, P. R. China
| | - Chao Huang
- National and Local Joint Engineering Research Center for Green Preparation Technology of Biobased Materials, School of Chemistry and Environment, Yunnan Minzu University, Kunming 650500, P. R. China
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4
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Sureshbabu P, Bhajammanavar V, Choutipalli VSK, Subramanian V, Baidya M. Unorthodox cascade reaction of arynes and N-nitrosamides leading to indazole scaffolds. Chem Commun (Camb) 2022; 58:1187-1190. [PMID: 34981799 DOI: 10.1039/d1cc05655g] [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
An unusual cascade annulation of arynes with N-alkyl-N-nitrosamides is developed by leveraging aryne σ-insertion and C(sp3)-H bond functionalization strategies under transition-metal-free conditions at ambient temperature, offering functionalized indazoles in high yields and regioselectivity. The protocol is scalable and exhibits a broad substrate scope. The reaction mechanism is also studied with DFT calculations.
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Affiliation(s)
- Popuri Sureshbabu
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India.
| | - Vinod Bhajammanavar
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India.
| | | | - Venkatesan Subramanian
- Inorganic and Physical Chemistry Laboratory, CSIR-Central Leather Research Institute, Chennai 600 020, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, Tamil Nadu, India.
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5
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Wenpeng W, Chunhong Y, Haichao L, Xicun W, Zhengjun Q. Addition of Benzyne to 2-Hydroxypyrimidine to Synthesize 2-Aryloxypyrimidine Derivatives under Mild Conditions. CHINESE J ORG CHEM 2022. [DOI: 10.6023/cjoc202206011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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6
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Abstract
A benzyne-mediated esterification of carboxylic acids and alcohols under mild conditions has been realized, which is made possible via a selective nucleophilic addition of carboxylic acid to benzyne in the presence of alcohol. After a subsequent transesterification with alcohol, the corresponding esters can be produced efficiently. This benzyne-mediated protocol can be used on the modification of Ibuprofen, cholesterol, estradiol, and synthesis of nandrolone phenylpropionate. In addition, benzyne can also be used to promote lactonization and amidation reaction.
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Affiliation(s)
- Jinlong Zhao
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030.,College of Chemistry, Jilin University, Changchun, P. R. China, 130012
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7
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Soldatova NS, Semenov AV, Geyl KK, Baykov SV, Shetnev AA, Konstantinova AS, Korsakov MM, Yusubov MS, Postnikov PS. Copper‐Catalyzed Selective N‐Arylation of Oxadiazolones by Diaryliodonium Salts. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100426] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Natalia S. Soldatova
- Institute of Chemistry Saint Petersburg State University Saint Petersburg 199034 Russian Federation
- Research School of Chemistry and Applied Biomedical Sciences Tomsk Polytechnic University Tomsk 634034 Russian Federation
| | - Artem V. Semenov
- M.V. Lomonosov Institute of Fine Chemical Technologies MIREA – Russian Technological University 86 Vernadskogo Pr Moscow 119571 Russian Federation
- Shemyakin-Ovchinnikov Institute of Bioorganic Chemistry 16/10 Miklukho-Maklaya St. Moscow 117997 Russian Federation
| | - Kirill K. Geyl
- Institute of Chemistry Saint Petersburg State University Saint Petersburg 199034 Russian Federation
| | - Sergey V. Baykov
- Institute of Chemistry Saint Petersburg State University Saint Petersburg 199034 Russian Federation
| | - Anton A. Shetnev
- Pharmaceutical Technology Transfer Centre Yaroslavl State Pedagogical University named after K.D. Ushinsky 108 Respublikanskaya St. Yaroslavl 150000 Russian Federation
| | - Anna S. Konstantinova
- Russian State University named after A.N. Kosygin (Technology. Design. Art) 33 Sadovnicheskaya St. Moscow 117997 Russian Federation
| | - Mikhail M. Korsakov
- Russian State University named after A.N. Kosygin (Technology. Design. Art) 33 Sadovnicheskaya St. Moscow 117997 Russian Federation
| | - Mekhman S. Yusubov
- Research School of Chemistry and Applied Biomedical Sciences Tomsk Polytechnic University Tomsk 634034 Russian Federation
| | - Pavel S. Postnikov
- Research School of Chemistry and Applied Biomedical Sciences Tomsk Polytechnic University Tomsk 634034 Russian Federation
- Department of Solid State Engineering Institute of Chemical Technology Prague 16628 Czech Republic
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8
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Halder P, Roy T, Das P. Recent developments in selective N-arylation of azoles. Chem Commun (Camb) 2021; 57:5235-5249. [PMID: 33908975 DOI: 10.1039/d1cc01265g] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
Transition-metal based carbon-heteroatom (C-X) bond formation has attracted the attention of synthetic chemists over the past few years because the resultant aryl/heteroaryl motifs are important substructures in many natural products, pharmaceuticals, etc. Several efficient protocols such as Buchwald-Hartwig amination, Ullmann coupling, Chan-Lam coupling and metal-free approaches have proved beneficial in C-X bond formation. Selective arylation of one hetero-centre over other centres without protection/deprotection thus allowing minimum synthetic manipulation has been achieved for several substrates using these protocols. Azoles are one such novel five-membered heterocyclic core with huge pharmaceutical applications. Though N-arylation on azole-bearing analogues has been extensively practised, selective N-arylation either on one N-centre or the exocyclic N-site of the azole ring in competition with other hetero-centres in the framework has been recently explored for azole-carrying systems. Thus, this review would focus on recent advances in chemo- and regio-selective N-arylation (either on one N-centre or the exocyclic N-site of the azole ring) on azole-containing frameworks.
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Affiliation(s)
- Pallabi Halder
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad-826004, India.
| | - Tanumay Roy
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad-826004, India.
| | - Parthasarathi Das
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad-826004, India.
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9
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Affiliation(s)
- Jiarong Shi
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Lianggui Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
| | - Yang Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, P. R. China, 400030
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10
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Zhang W, Bu J, Wang L, Li P, Li H. Sunlight-mediated [3 + 2] cycloaddition of azobenzenes with arynes: an approach toward the carbazole skeleton. Org Chem Front 2021. [DOI: 10.1039/d1qo00739d] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Abstract
A mild sunlight-mediated [3 + 2] cycloaddition of azobenzenes with arynes has been established for the construction of the carbazole backbone.
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Affiliation(s)
- Wenjie Zhang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
| | - Jiahui Bu
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
| | - Lei Wang
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, P. R. China
| | - Pinhua Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
| | - Hongji Li
- Key Laboratory of Green and Precise Synthetic Chemistry and Applications, Ministry of Education; School of Chemistry and Materials Science, Huaibei Normal University, Huaibei, Anhui 235000, P.R. China
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11
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Chen X, Yang N, Zeng W, Wang L, Li P, Li H. Metal-free dearomative [5+2]/[2+2] cycloaddition of 1 H-indoles with ortho-(trimethylsilyl)aryl triflates. Chem Commun (Camb) 2021; 57:7047-7050. [PMID: 34179907 DOI: 10.1039/d1cc02550c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Herein, we report a mild dearomative [5+2]/[2+2] cycloaddition of 1H-indoles with ortho-(trimethylsilyl)aryl triflates. The unique [5+2] cycloaddition enables the synthesis of a series of dibenzo[b,e]azepine derivatives in moderate to good yields. Increasing the steric hindrance at the C2-position of 1H-indoles leads to the [2+2] cycloaddition. Mechanistic investigations support that the reaction of 1H-indoles with arynes undergoes a [2+2] cycloaddition step, followed by a ring expansion to the [5+2] cycloaddition product.
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Affiliation(s)
- Xinyu Chen
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.
| | - Na Yang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.
| | - Wen Zeng
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.
| | - Lei Wang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China. and Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 200032, P. R. China
| | - Pinhua Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China.
| | - Hongji Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China. and State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Shanghai 200032, P. R. China
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12
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Thorat VH, Hsieh JC, Cheng CH. Transition-Metal-Free Tandem Cyclization/ N-Arylation Reaction: A Method To Access Biaryl Sultam Derivatives via a Diradical Pathway. Org Lett 2020; 22:6623-6627. [PMID: 32806142 DOI: 10.1021/acs.orglett.0c02393] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
A novel procedure for the transition-metal-free tandem cyclization/N-arylation reaction sequence of an aryne with a 1,2,3,4-benzothiatriazine-1,1-dioxide is reported. This reaction goes through the intramolecular homolytic cyclization to generate an N-H biaryl sultam intermediate, which enables aryne insertion to access diversely functionalized biaryl sultam derivatives with high yields. The mechanism study indicates that homolytic cyclization is executed by a diradical species, initiated from the thermal decomposition of 1,2,3,4-benzothiatriazine-1,1-dioxide to release a nitrogen molecule.
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Affiliation(s)
- Vijaykumar H Thorat
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan (R.O.C.).,Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan (R.O.C.)
| | - Jen-Chieh Hsieh
- Department of Chemistry, Tamkang University, New Taipei City 25137, Taiwan (R.O.C.)
| | - Chien-Hong Cheng
- Department of Chemistry, National Tsing Hua University, Hsinchu 30013, Taiwan (R.O.C.)
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13
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Rahman M, Bagdi AK, Kopchuk DS, Kovalev IS, Zyryanov GV, Chupakhin ON, Majee A, Hajra A. Recent advances in the synthesis of fluorinated compounds via an aryne intermediate. Org Biomol Chem 2020; 18:9562-9582. [DOI: 10.1039/d0ob01638a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
In this review, the usefulness of aryne intermediates for the synthesis of various fluorinated organic compounds during the last decade has been demonstrated.
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Affiliation(s)
- Matiur Rahman
- Department of Organic and Biomolecular Chemistry
- Chemical Engineering Institute
- Ural Federal University
- Yekaterinburg
- Russian Federation
| | | | - Dmitry S. Kopchuk
- Department of Organic and Biomolecular Chemistry
- Chemical Engineering Institute
- Ural Federal University
- Yekaterinburg
- Russian Federation
| | - Igor S. Kovalev
- Department of Organic and Biomolecular Chemistry
- Chemical Engineering Institute
- Ural Federal University
- Yekaterinburg
- Russian Federation
| | - Grigory V. Zyryanov
- Department of Organic and Biomolecular Chemistry
- Chemical Engineering Institute
- Ural Federal University
- Yekaterinburg
- Russian Federation
| | - Oleg N. Chupakhin
- Department of Organic and Biomolecular Chemistry
- Chemical Engineering Institute
- Ural Federal University
- Yekaterinburg
- Russian Federation
| | - Adinath Majee
- Department of Chemistry
- Visva-Bharati (A Central University)
- Santiniketan 731235
- India
| | - Alakananda Hajra
- Department of Chemistry
- Visva-Bharati (A Central University)
- Santiniketan 731235
- India
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14
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Li YK, Cui MX, Sha F, Li Q, Wu XY. Construction of indazolo[3,2-a]isoquinolines via [3 + 2] cycloaddition of benzynes. Org Biomol Chem 2019; 17:8963-8968. [PMID: 31576394 DOI: 10.1039/c9ob01878f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A [3 + 2] annulation protocol for the construction of N-substituted indazolo[3,2-a]isoquinolines starting from benzynes and C,N-cyclic azomethine imines was developed. A diverse range of highly functionalized products indazolo[3,2-a]isoquinolines featuring an indazole scaffold can be easily accessed via a one-step reaction under mild conditions, and they show good anti-proliferative activity on cancer cells.
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Affiliation(s)
- Yue-Kun Li
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China.
| | - Ming-Xin Cui
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China.
| | - Feng Sha
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China.
| | - Qiong Li
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China.
| | - Xin-Yan Wu
- School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China.
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15
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Zhao J, Li H, Li P, Wang L. Annulation of Benzamides with Arynes Using Palladium with Photoredox Dual Catalysis. J Org Chem 2019; 84:9007-9016. [DOI: 10.1021/acs.joc.9b00893] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Jie Zhao
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Hongji Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Pinhua Li
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
| | - Lei Wang
- Department of Chemistry, Huaibei Normal University, Huaibei, Anhui 235000, P. R. China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, P. R. China
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16
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Yang Y, Xu Y, Jones CR. A Ring Expansion Route to Benzofused N-Heterocycles Through Aryne Insertion into 1,3-Diaza-heterocycles. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900570] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yun Yang
- School of Biological and Chemical Sciences; Queen Mary University of London; Mile End Road E1 4NS London UK
| | - Yue Xu
- School of Biological and Chemical Sciences; Queen Mary University of London; Mile End Road E1 4NS London UK
| | - Christopher R. Jones
- School of Biological and Chemical Sciences; Queen Mary University of London; Mile End Road E1 4NS London UK
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17
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Chen C, Hao Y, Zhang TY, Pan JL, Ding J, Xiang HY, Wang M, Ding TM, Duan A, Zhang SY. Computational and experimental studies on copper-mediated selective cascade C-H/N-H annulation of electron-deficient acrylamide with arynes. Chem Commun (Camb) 2019; 55:755-758. [PMID: 30500009 DOI: 10.1039/c8cc08708c] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
An efficient and convenient copper-mediated method has been developed to achieve direct cascade C-H/N-H annulation to synthesize 2-quinolinones from electron-deficient acrylamides and arynes. This method highlights an emerging but simple strategy to transform inert C-H bonds into versatile functional groups in organic synthesis to provide a new method of synthesizing 2-quinolinones efficiently. Mechanistic investigations by experimental and density functional theory (DFT) studies suggest that an organometallic C-H activation via a Cu(iii) intermediate is likely to be involved in the reaction.
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Affiliation(s)
- Chao Chen
- Sixth People's Hospital South Campus, Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs, and School of Chemistry and Chemical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China.
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18
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Wei WT, Luo MJ, Teng F, Song RJ, Li JH. Silver-catalyzed oxidative 1,2-alkyletherification of unactivated alkenes with α-bromoalkyl carbonyls: facile access to highly substituted 2,3-dihydrofurans. Chem Commun (Camb) 2019; 55:11111-11114. [DOI: 10.1039/c9cc05695e] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
A silver-catalysed C–Br oxidative functionalization/annulative oxygenation process for producing valuable quaternary-carbon-possessing 2,3-dihydrofuran is presented.
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Affiliation(s)
- Wen-Ting Wei
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
- School of Materials Science and Chemical Engineering
| | - Mu-Jia Luo
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Fan Teng
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Ren-Jie Song
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
| | - Jin-Heng Li
- Key Laboratory of Jiangxi Province for Persistent Pollutants Control and Resources Recycle
- Nanchang Hangkong University
- Nanchang 330063
- China
- School of Materials Science and Chemical Engineering
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19
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Hong X, Ma F, Zha D, Li H. Silver‐Catalyzed Stereoselective
trans
Addition of 4‐Hydroxycoumarins to Haloalkynes and Late‐Stage Nitration. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800625] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Xianfang Hong
- Department of ChemsitryHuaibei Normal University Huaibei AnHui 235000 P.R. China
| | - Fang Ma
- Department of ChemsitryHuaibei Normal University Huaibei AnHui 235000 P.R. China
| | - Dandan Zha
- Department of ChemsitryHuaibei Normal University Huaibei AnHui 235000 P.R. China
| | - Hongji Li
- Department of ChemsitryHuaibei Normal University Huaibei AnHui 235000 P.R. China
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Kalvacherla B, Batthula S, Balasubramanian S, Palakodety RK. Transition-Metal-Free Cyclization of Propargylic Alcohols with Aryne: Synthesis of 3-Benzofuranyl-2-oxindole and 3-Spirooxindole Benzofuran Derivatives ⊥. Org Lett 2018; 20:3824-3828. [PMID: 29920110 DOI: 10.1021/acs.orglett.8b01414] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
An unprecedented base-mediated cyclization of propargylic alcohols with aryne is reported, providing a novel method for the synthesis of 3-benzofuranyl-2-oxindole and 3-spirooxindole benzofuran scaffolds via a propargyl Claisen rearrangement/cycloaddition pathway. The nature of the substituent on acetylene group of propargylic alcohol influences the outcome of the reaction. The protocol offers a transition-metal-free and operationally simple methodology with broad substrate scope as a ready access to complex oxindole-linked heterocyclic compounds.
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Affiliation(s)
- Babachary Kalvacherla
- D-211, Discovery Laboratory, Organic and Biomolecular Chemistry Division , CSIR-Indian Institute of Chemical Technology , Hyderabad - 500007 , India.,Academy of Scientific and Innovative Research (AcSIR) , New Delhi 110025 , India
| | - Srinivas Batthula
- D-211, Discovery Laboratory, Organic and Biomolecular Chemistry Division , CSIR-Indian Institute of Chemical Technology , Hyderabad - 500007 , India
| | - Sridhar Balasubramanian
- Center for X-ray Crystallography , CSIR-Indian Institute of Chemical Technology , Hyderabad - 500007 , India
| | - Radha Krishna Palakodety
- D-211, Discovery Laboratory, Organic and Biomolecular Chemistry Division , CSIR-Indian Institute of Chemical Technology , Hyderabad - 500007 , India
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