1
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Ishii A, Hata T, Shigeta M, Urabe H. Nucleophilic Addition of Amides to Haloalkynes: Synthesis of ( Z)-β-Halovinyl Amides as Dual Precursors of Alkylidene Carbenes and Allyl Halides. Org Lett 2024; 26:2999-3003. [PMID: 38578270 DOI: 10.1021/acs.orglett.4c00589] [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
Toward a regioselective method for the synthesis of β-halovinyl amides, we developed a transition-metal-free nucleophilic addition reaction of amides to haloalkynes. The regioselective nucleophilic addition was achieved under solvent-free conditions using phosphonates to protonate the intermediate alkylidene carbenoids, thus suppressing their decomposition. Furthermore, we demonstrate that β-halovinyl amides can serve as dual precursors of allyl halides and alkylidene carbenes to obtain functionalized indoles and pyrrolidones.
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Affiliation(s)
- Azusa Ishii
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
| | - Takeshi Hata
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
| | - Masayuki Shigeta
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
| | - Hirokazu Urabe
- Department of Life Science and Technology, School of Life Science and Technology, Tokyo Institute of Technology, Yokohama, Kanagawa 226-8501, Japan
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2
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Zhang L, Song Z. One-Pot Synthesis of Polycyclic Sultams Enabled by Gold-Catalyzed Hydroamination of o-Alkynylbenzenesulfonamides and Subsequent Iodine(III)-Mediated Counteranion-Assisted Intramolecular Annulation. Org Lett 2024; 26:2192-2196. [PMID: 38457444 DOI: 10.1021/acs.orglett.4c00294] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/10/2024]
Abstract
Herein we present a facile and efficient one-pot synthetic protocol for the construction of polycyclic sultams. This protocol involves gold-catalyzed intramolecular hydroamination of o-alkynylbenzenesulfonamides followed by HTIB-mediated counteranion-assisted intramolecular annulation. The transformation tolerates a wide range of functional groups, resulting in the formation of highly functionalized and valuable polycyclic sultam skeletons in moderate to excellent yields. These polycyclic sultams are widely used as key building blocks in organic science.
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Affiliation(s)
- Lijun Zhang
- College of Chemistry, Jilin University, Changchun, Jilin 130012, P. R. China
| | - Zhiguang Song
- College of Chemistry, Jilin University, Changchun, Jilin 130012, P. R. China
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3
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Takeda N, Suganuma R, Yasui M, Ueda M. Synthesis of isolable β-chloroenamines from N-alkoxylactams with organometallic reagents. Org Biomol Chem 2023; 21:1435-1439. [PMID: 36649121 DOI: 10.1039/d2ob02151j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Abstract
An efficient approach to access isolable β-chloroenamines via nucleophilic addition/dehydration of α-chloro N-alkoxylactam with organolithium and Grignard reagents is reported. This approach is amenable to the synthesis of β-chloroenamines by incorporating various C(sp) and C(sp2) units, such as alkyne, aryl, and heteroaryl moieties. The sequential reaction has a broad substrate scope and can be carried out for a scalable synthesis of β-chloroenamines. Control experiments suggested that both chloro and alkoxy groups act as inductive electron-withdrawing substituents to improve the stability of the enamines.
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Affiliation(s)
- Norihiko Takeda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Riku Suganuma
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Motohiro Yasui
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
| | - Masafumi Ueda
- Kobe Pharmaceutical University, Motoyamakita, Higashinada, Kobe 658-8558, Japan.
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4
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Chen X, Pei C, Liu B, Li J, Zou D, Wu Y, Wu Y. Copper-assisted trifluoromethylthiolation/radical cascade cyclization of alkynes to construct SCF 3-containing dioxodibenzothiazepines. Chem Commun (Camb) 2022; 58:8674-8677. [PMID: 35822922 DOI: 10.1039/d2cc02171d] [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 mild and efficient Cu-assisted trifluoromethylthiolation/radical cascade cyclization of alkynes with readily available and stable AgSCF3 as the trifluoromethylthiolating reagent has been disclosed. This transformation provides an opportunity to construct a series of potential medicinally valuable trifluoromethylthio-substituted dioxodibenzothiazepines with wide functional group compatibility. This protocol opens up a new avenue for the construction of useful trifluoromethylthiolated seven-membered N-heterocycles.
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Affiliation(s)
- Xiaoyu Chen
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.
| | - Congcong Pei
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.
| | - Bo Liu
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.
| | - Jingya Li
- Tetranov Biopharm, LLC., Zhengzhou, 450052, People's Republic of China
| | - Dapeng Zou
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.
| | - Yangjie Wu
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China.
| | - Yusheng Wu
- College of Chemistry, Green Catalysis Center, Zhengzhou University, Zhengzhou, Henan, 450001, People's Republic of China. .,Tetranov International, Inc., 100 Jersey Avenue, Suite A340, New Brunswick, NJ, 08901, USA.
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5
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Zheng X, Shen Q, Yin C, Li L, Zhong T, Yu C. Photoinduced Three‐Component Difluoroamidosulfonylation/Bicyclization: Regioselectivity Synthesis of Seven‐Membered Dibenzosultams. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200292] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Xiangyun Zheng
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Qitao Shen
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanliu Yin
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Lianghao Li
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Tianshuo Zhong
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
| | - Chuanming Yu
- College of Pharmaceutical Sciences Zhejiang University of Technology Hangzhou 310014 People's Republic of China
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6
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Xiao Q, Lu M, Deng Y, Jian JX, Tong QX, Zhong JJ. Photoinduced Radical Cascade Cyclization: A Metal-Free Approach to Access Difluoroalkylated Dioxodibenzothiazepines. Org Lett 2021; 23:9303-9308. [PMID: 34806891 DOI: 10.1021/acs.orglett.1c03700] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
A simple and mild photoredox catalytic approach to access difluoroalkylated dioxodibenzothiazepines in high regioselectivity via radical cascade cyclization has been described herein. In contrast to previous methods, this strategy does not involve the use of transition-metal catalysts and avoids the potential disadvantages of inevitable toxicity and the tedious removal process of metal catalysts. The commercially available and inexpensive CF2 precursors, wide substrate scope, and mild reaction conditions demonstrate the practicability of this approach.
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Affiliation(s)
- Qian Xiao
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China.,School of Chemistry and Environmental Engineering, Hanshan Normal University, Chaozhou, Guangdong 521041, P. R. China
| | - Maojian Lu
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
| | - Yinglan Deng
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
| | - Jing-Xin Jian
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
| | - Qing-Xiao Tong
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
| | - Jian-Ji Zhong
- Department of Chemistry and Key Laboratory for Preparation and Application of Ordered Structural Materials of Guangdong Province, Shantou University and Chemistry and Chemical Engineering Guangdong Laboratory, Shantou, Guangdong 515063, P. R. China
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7
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Gao Y, Zhao Q, Li L, Ma YN. Synthesis of Six-Membered N-Heterocycle Frameworks Based on Intramolecular Metal-Free N-Centered Radical Chemistry. CHEM REC 2021; 22:e202100218. [PMID: 34618405 DOI: 10.1002/tcr.202100218] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2021] [Revised: 09/14/2021] [Accepted: 09/15/2021] [Indexed: 12/29/2022]
Abstract
The formation of intramolecular C-N bond represents a powerful strategy in organic transformation as the great importance of N-heterocycles in the fields of natural products and bioactive molecules. This personal account describes the synthesis of cyclic phosphinamidation, benzosultam, benzosulfoximine, phenanthridine and their halogenated compounds through transition-metal-free intramolecular oxidative C-N bond formation. Mechanism study reveals that N-X bond is initially formed under the effect of hypervalent halogen, which is very unstable and easily undergoes thermal or light homolytic cleavage to generate nitrogen radical. Then the nitrogen radical is trapped by the arene to give aryl radical. Rearomatization of aryl radical under the oxidant to provide corresponding N-heterocycle. Under suitable conditions, the N-heterocycles can be further transformed to halogenated N-heterocycles.
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Affiliation(s)
- Yan Gao
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Qianyi Zhao
- Henan Key Laboratory of Boron Chemistry and Advanced Energy Materials, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, 453007, China
| | - Lixin Li
- Academy of Chinese Medical Sciences, Henan University of Chinese Medicine, 156 Jinshui East Road, Zhengzhou, 450046, Henan, China
| | - Yan-Na Ma
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou, 450001, China
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8
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Chen X, Sun P, Mo B, Chen C, Peng J. Palladium-Catalyzed Synthesis of Fluorescent Benzo[4,5]imidazo[1,2-a]pyridines through Annulation Reaction of Benzimidazoles and Alkynyl Bromides with Internal Alkynes. J Org Chem 2021; 86:352-366. [PMID: 33251795 DOI: 10.1021/acs.joc.0c02126] [Citation(s) in RCA: 13] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
An efficient synthesis of fused azapolycycles based on (benz)imidazole and pyridine scaffolds has been developed. In all cases, the first nucleophilic addition of (benz)imidazoles to alkynyl bromides in tert-pentyl alcohol can proceed in a stereoselective manner to provide (Z)-N-(1-bromo-1-alken-2-yl)benzimidazoles at 110 °C. Sequentially, these adducts containing alkenyl bromide can undergo Pd-catalyzed intermolecular C-H annulation in the presence of internal alkynes in dimethylacetamide, affording fluorescent (benz)imidazole-fused pyridines in good to high yields. These compounds generally exhibit blue or green fluorescences (454-503 nm for solution states and 472-506 nm for solid states), and the fluorescence quantum yields remained in 0.19-0.89 and 0.02-0.74 for solution and solid states, respectively.
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Affiliation(s)
- Xin Chen
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
| | - Peng Sun
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
| | - Baichuan Mo
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
| | - Chunxia Chen
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
| | - Jinsong Peng
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, 26 Hexing Road, Harbin 150040, P. R. China
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9
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Recent Advances in Catalytic Synthesis of Benzosultams. Molecules 2020; 25:molecules25194367. [PMID: 32977516 PMCID: PMC7582503 DOI: 10.3390/molecules25194367] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2020] [Revised: 09/20/2020] [Accepted: 09/21/2020] [Indexed: 11/17/2022] Open
Abstract
Benzosultams represent one category of multi-heteroatom heterocyclic scaffolds, which have been frequently found in pharmaceuticals, agricultural agents, and chiral catalysts. Given the diversely significant functions of these compounds in organic and medicinal chemistry, great efforts have been made to develop novel catalytic systems for the efficient construction of benzosultam motifs over the past decades. Herein, in this review, we mainly summarize the recent advances in the field of catalytic synthesis of benzosultams from 2017 to August of 2020, with an emphasis on the scopes and mechanisms of representative reactions.
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10
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Li X, Sun P, Xie K, Zhou D, Peng J, Fan A, Zhang J, Chen C. Transition-Metal-Free One-Pot Synthesis of Naphthoquinonefuran Derivatives Through Sequential Nucleophilic Substitution-Nucleophilic Addition Reaction. J Org Chem 2020; 85:9313-9320. [PMID: 32608986 DOI: 10.1021/acs.joc.0c00513] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A transition-metal-free route for tandem one-pot synthesis of naphthoquinonefuran derivatives from 2-hydroxynaphthoquinones has been developed. The sequentially accomplished process comprises an intermolecular alkynylation of sp2-carbon at the 3 position of 2-hydroxynaphthoquinones with arylethynyl bromides, followed by a base-promoted intramolecular nucleophilic annulation reaction. A broad range of functional groups is compatible with this reaction, and diverse naphtho[2,3-b]furan-4,9-diones can be obtained with good yields and excellent regioselectivity.
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Affiliation(s)
- Xiang Li
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Peng Sun
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, Harbin 150040, P. R. China
| | - Kaijun Xie
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Dun Zhou
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Jinsong Peng
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Aihong Fan
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Jing Zhang
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China
| | - Chunxia Chen
- College of Chemistry, Chemical Engineering and Resource Utilization, Northeast Forestry University, Harbin 150040, P. R. China.,Material Science and Engineering College, Northeast Forestry University, Harbin 150040, P. R. China
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11
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Synthesis of N-substituted sulfonamides containing perhalopyridine moiety as bio-active candidates. J Fluor Chem 2020. [DOI: 10.1016/j.jfluchem.2020.109507] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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12
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Dhuguru J, Skouta R. Role of Indole Scaffolds as Pharmacophores in the Development of Anti-Lung Cancer Agents. Molecules 2020; 25:E1615. [PMID: 32244744 PMCID: PMC7181244 DOI: 10.3390/molecules25071615] [Citation(s) in RCA: 54] [Impact Index Per Article: 13.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2020] [Revised: 03/24/2020] [Accepted: 03/30/2020] [Indexed: 12/24/2022] Open
Abstract
Lung cancer is the leading cause of death in men and women worldwide, affecting millions of people. Between the two types of lung cancers, non-small cell lung cancer (NSCLC) is more common than small cell lung cancer (SCLC). Besides surgery and radiotherapy, chemotherapy is the most important method of treatment for lung cancer. Indole scaffold is considered one of the most privileged scaffolds in heterocyclic chemistry. Indole may serve as an effective probe for the development of new drug candidates against challenging diseases, including lung cancer. In this review, we will focus on discussing the existing indole based pharmacophores in the clinical and pre-clinical stages of development against lung cancer, along with the synthesis of some of the selected anti-lung cancer drugs. Moreover, the basic mechanism of action underlying indole based anti-lung cancer treatment, such as protein kinase inhibition, histone deacetylase inhibition, DNA topoisomerase inhibition, and tubulin inhibition will also be discussed.
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Affiliation(s)
| | - Rachid Skouta
- Department of Biology, University of Massachusetts, Amherst, MA 01003, USA;
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13
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Liu C, Yang F. Au-Catalyzed Stereoselective Ritter Reaction of Haloalkynes with Nitriles for (Z
)-β
-Halogenated Enamides. European J Org Chem 2019. [DOI: 10.1002/ejoc.201901318] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Congrong Liu
- School of Environment Engineering; Nanjing Institute of Technology; 1 Hongjingdadao 211167 Nanjing Jiangsu China
| | - Fulai Yang
- Department State Key Laboratory of Natural Medicines; Department of Organic Chemistry; China Pharmaceutical University; 210009 Nanjing P. R. China
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14
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Li X, Bian Y, Chen X, Zhang H, Wang W, Ren S, Yang X, Lu C, Chen C, Peng J. Tunable synthesis of quinolinone-fused isoquinolines through sequential one-pot nucleophilic addition and palladium-catalyzed intramolecular C–H alkenylation. Org Biomol Chem 2019; 17:321-332. [DOI: 10.1039/c8ob02437e] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient sequential one-pot synthesis of N-fused heterocycles based on 4-quinolinone and isoquinoline scaffolds of biological interest has been developed.
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Affiliation(s)
- Xue Li
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
- Material Science and Engineering College
- Northeast Forestry University
| | - Yunyun Bian
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
| | - Xin Chen
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
- Material Science and Engineering College
- Northeast Forestry University
| | - Hang Zhang
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
| | - Wei Wang
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
| | - Sida Ren
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
| | - Xuechen Yang
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
| | - Chang Lu
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
| | - Chunxia Chen
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
- Material Science and Engineering College
- Northeast Forestry University
| | - Jinsong Peng
- Department of Chemistry and Chemical Engineering
- College of Science
- P. R. China
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15
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16
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Affiliation(s)
- Sudarshan Debnath
- Department of Chemistry; Syamsundar College; 713424 Shyamsundar India
| | - Shovan Mondal
- Department of Chemistry; Syamsundar College; 713424 Shyamsundar India
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17
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Yamamoto Y, Nakazaki A, Nishikawa T. New regiocontrolled syntheses of pyrrolopyrazinones and its application to the synthesis of peramine. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.05.004] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
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18
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Siva Reddy A, Siva Kumari AL, Saha S, Kumara Swamy KC. Palladium-Catalyzed Tandem-Cyclization of Functionalized Ynamides: An Approach to Benzosultams. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500854] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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19
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Sayyad M, Nanaji Y, Ghorai MK. A Synthetic Route to 2-Alkyl Indoles via Thiophenol-Mediated Ring-Opening of N-Tosylaziridines Followed by Copper Powder-Mediated C–N Cyclization/Aromatization. J Org Chem 2015; 80:12659-67. [DOI: 10.1021/acs.joc.5b02251] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Masthanvali Sayyad
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Yerramsetti Nanaji
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
| | - Manas K. Ghorai
- Department
of Chemistry, Indian Institute of Technology, Kanpur 208016, India
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20
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Han W, Zhou X, Yang S, Xiang G, Cui B, Chen Y. Palladium-Catalyzed Nucleophilic Substitution/C–H Activation/Aromatization Cascade Reaction: One Approach To Construct 6-Unsubstituted Phenanthridines. J Org Chem 2015; 80:11580-7. [DOI: 10.1021/acs.joc.5b02145] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Wenyong Han
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, P. R. China
| | - Xiaojian Zhou
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, P. R. China
| | - Siyi Yang
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, P. R. China
| | - Guangyan Xiang
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, P. R. China
| | - Baodong Cui
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, P. R. China
| | - Yongzheng Chen
- School of Pharmacy, Zunyi Medical University, Zunyi, 563000, P. R. China
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21
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Chen XY, Englert U, Bolm C. Base-Mediated Syntheses of Di- and Trisubstituted Imidazoles from Amidine Hydrochlorides and Bromoacetylenes. Chemistry 2015; 21:13221-4. [DOI: 10.1002/chem.201502707] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/10/2015] [Indexed: 12/16/2022]
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22
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Urabe H, Yamagishi M, Ishii A, Hata T. Facile Preparation of 1,2-Dihydroisoquinolines from N-Benzylsulfonamides and Bromoacetylenes. HETEROCYCLES 2015. [DOI: 10.3987/com-14-s(k)72] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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23
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Ji X, Huang H, Xiong W, Huang K, Wu W, Jiang H. Palladium-Catalyzed Oxidative C–N Bond Coupling Involving a Solvent-Controlled Regioselective Bromination Process. J Org Chem 2014; 79:7005-11. [DOI: 10.1021/jo501171c] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Xiaochen Ji
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huawen Huang
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wenfang Xiong
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Kunbo Huang
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Wanqing Wu
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
| | - Huanfeng Jiang
- School
of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, China
- State
Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, China
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24
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Li M, Yuan H, Zhao B, Liang F, Zhang J. Alkyne aminohalogenation enabled by DBU-activated N-haloimides: direct synthesis of halogenated enamines. Chem Commun (Camb) 2014; 50:2360-3. [PMID: 24448462 DOI: 10.1039/c3cc49572h] [Citation(s) in RCA: 36] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
Activated by DBU, N-haloimides can be used as both halogen and nitrogen sources to achieve the difunctionalization of terminal alkynes, giving rise to useful halogenated enamines with high efficiency and high regio- and stereoselectivities. The cascade reaction features simple manipulation, mild conditions, a broad substrate scope, readily available reagents, and atom-economy.
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Affiliation(s)
- Mengru Li
- Department of Chemistry, Northeast Normal University, Changchun 130024, China.
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25
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Li Y, Ding Q, Qiu G, Wu J. Synthesis of benzosultams via an intramolecular sp2C–H bond amination reaction of o-arylbenzenesulfonamides under metal-free conditions. Org Biomol Chem 2014; 12:149-55. [DOI: 10.1039/c3ob41810c] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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26
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Synthesis of cis-1,2-dichlorovinylsulfones via Fe-catalyzed regio- and stereoselective addition of sulfonyl chlorides to aromatic chloroalkynes. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2013.12.063] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
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27
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Murase H, Senda K, Senoo M, Hata T, Urabe H. Rhodium-catalyzed intramolecular hydroarylation of 1-halo-1-alkynes: regioselective synthesis of semihydrogenated aromatic heterocycles. Chemistry 2013; 20:317-22. [PMID: 24302566 DOI: 10.1002/chem.201303008] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2013] [Indexed: 11/11/2022]
Abstract
The regioselective intramolecular hydroarylation of (3-halo-2-propynyl)anilines, (3-halo-2-propynyl) aryl ethers, or (4-halo-3-butynyl) aryl ethers was efficiently catalyzed by Rh2(OCOCF3)4 to give semihydrogenated aromatic heterocycles, such as 4-halo-1,2-dihydroquinolines, 4-halo-3-chromenes, or 4-(halomethylene)chromans, in good to excellent yields. Some synthetic applications taking advantage of the halo-substituents of the products are also illustrated.
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Affiliation(s)
- Hirohiko Murase
- Department of Biomolecular Engineering, Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology, 4259-B-59 Nagatsuta-cho, Midori-ku, Yokohama, Kanagawa 226-8501 (Japan), Fax: (+81) (0)45-924-5849
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28
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Iwata S, Senoo M, Hata T, Urabe H. Synthesis ofS-Aryl Arenethiosulfonates fromN,N-Di(arenesulfonyl)hydrazines: Reduction of Sulfonyl Chlorides with an Organic Reagent. HETEROATOM CHEMISTRY 2013. [DOI: 10.1002/hc.21088] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Satoshi Iwata
- Department of Biomolecular Engineering; Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology; Yokohama; Kanagawa; 226-8501; Japan
| | - Masato Senoo
- Department of Biomolecular Engineering; Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology; Yokohama; Kanagawa; 226-8501; Japan
| | - Takeshi Hata
- Department of Biomolecular Engineering; Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology; Yokohama; Kanagawa; 226-8501; Japan
| | - Hirokazu Urabe
- Department of Biomolecular Engineering; Graduate School of Bioscience and Biotechnology, Tokyo Institute of Technology; Yokohama; Kanagawa; 226-8501; Japan
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29
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Besandre R, Jaimes M, May JA. Indoles Synthesized from Amines via Copper Catalysis. Org Lett 2013; 15:1666-9. [DOI: 10.1021/ol400444g] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Ronald Besandre
- Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, United States
| | - Miguel Jaimes
- Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, United States
| | - Jeremy A. May
- Department of Chemistry, University of Houston, 136 Fleming Building, Houston, Texas 77204-5003, United States
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30
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Yoshikai N, Wei Y. Synthesis of Pyrroles, Indoles, and Carbazoles through Transition-Metal-Catalyzed CH Functionalization. ASIAN J ORG CHEM 2013. [DOI: 10.1002/ajoc.201300016] [Citation(s) in RCA: 175] [Impact Index Per Article: 15.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
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31
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Peng J, Shang G, Chen C, Miao Z, Li B. Nucleophilic Addition of Benzimidazoles to Alkynyl Bromides/Palladium-Catalyzed Intramolecular C–H Vinylation: Synthesis of Benzo[4,5]imidazo[2,1-a]isoquinolines. J Org Chem 2013; 78:1242-8. [DOI: 10.1021/jo302471z] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Jinsong Peng
- Department of Chemistry
and Chemical Engineering, College of Science, Northeast Forestry University, Harbin, 150040, P. R.
China
- Post-doctoral
Mobile
Research Station of Forestry Engineering, Northeast Forestry University, Harbin, 150040, P. R.
China
| | - Guoning Shang
- Department of Chemistry
and Chemical Engineering, College of Science, Northeast Forestry University, Harbin, 150040, P. R.
China
| | - Chunxia Chen
- Department of Chemistry
and Chemical Engineering, College of Science, Northeast Forestry University, Harbin, 150040, P. R.
China
| | - Zhongshuo Miao
- Department of Chemistry
and Chemical Engineering, College of Science, Northeast Forestry University, Harbin, 150040, P. R.
China
| | - Bin Li
- Department of Chemistry
and Chemical Engineering, College of Science, Northeast Forestry University, Harbin, 150040, P. R.
China
- Post-doctoral
Mobile
Research Station of Forestry Engineering, Northeast Forestry University, Harbin, 150040, P. R.
China
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32
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33
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Xia XF, Wang N, Zhang L, Song XR, Liu XY, Liang YM. Palladium(II)-Catalyzed Tandem Cyclization/C–H Functionalization of Alkynes for the Synthesis of Functionalized Indoles. J Org Chem 2012; 77:9163-70. [DOI: 10.1021/jo301741j] [Citation(s) in RCA: 90] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Xiao-Feng Xia
- State Key Laboratory
of Applied
Organic Chemistry, Lanzhou University,
Lanzhou 730000, P. R. China
| | - Ning Wang
- State Key Laboratory
of Applied
Organic Chemistry, Lanzhou University,
Lanzhou 730000, P. R. China
| | - Lu−Lu Zhang
- State Key Laboratory
of Applied
Organic Chemistry, Lanzhou University,
Lanzhou 730000, P. R. China
| | - Xian-Rong Song
- State Key Laboratory
of Applied
Organic Chemistry, Lanzhou University,
Lanzhou 730000, P. R. China
| | - Xue-Yuan Liu
- State Key Laboratory
of Applied
Organic Chemistry, Lanzhou University,
Lanzhou 730000, P. R. China
| | - Yong-Min Liang
- State Key Laboratory
of Applied
Organic Chemistry, Lanzhou University,
Lanzhou 730000, P. R. China
- State Key Laboratory of Solid
Lubrication, Lanzhou Institute of Chemical Physics, Chinese Academy of Science, Lanzhou 730000, P. R. China
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34
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Knapp JM, Zhu JS, Tantillo DJ, Kurth MJ. Multicomponent assembly of highly substituted indoles by dual palladium-catalyzed coupling reactions. Angew Chem Int Ed Engl 2012; 51:10588-91. [PMID: 23001913 DOI: 10.1002/anie.201204633] [Citation(s) in RCA: 56] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2012] [Indexed: 11/06/2022]
Abstract
Highly substituted indoles were synthesized by a palladium-catalyzed reaction involving three independent components in a one-pot reaction. Two distinct palladium-catalyzed coupling reactions occur with a single catalytic system: a Buchwald-Hartwig reaction and an arene-alkene coupling. Quantum chemical computations provide insight into the mechanism of the latter coupling step.
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Affiliation(s)
- John M Knapp
- Department of Chemistry, University of California Davis, 1 Shields Ave., Davis, CA 95616, USA
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35
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Knapp JM, Zhu JS, Tantillo DJ, Kurth MJ. Multicomponent Assembly of Highly Substituted Indoles by Dual Palladium-Catalyzed Coupling Reactions. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201204633] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
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36
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Liu B, Li Y, Yin M, Wu W, Jiang H. Palladium-catalyzed tandem reaction of o-aminophenols, bromoalkynes and isocyanides to give 4-amine-benzo[b][1,4]oxazepines. Chem Commun (Camb) 2012; 48:11446-8. [DOI: 10.1039/c2cc35802f] [Citation(s) in RCA: 60] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
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