1
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Yaragorla S, Sneha Latha D, Kumar R. Mechanochemical Regioselective [3+3] Annulation of 6-Amino Uracil with Propargyl Alcohols Catalyzed by a Brønsted Acid/Hexafluoroisopropanol. Chemistry 2024:e202401480. [PMID: 38727792 DOI: 10.1002/chem.202401480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2024] [Indexed: 06/19/2024]
Abstract
A mechanochemistry approach is developed for regioselective synthesis of functionalized dihydropyrido[2,3-d]pyrimidines by milling propargylic alcohols and 6-aminouracils with HFIP/p-TsOH. In the case of tert-propargyl alcohols, this [3+3] cascade annulation proceeded through allenylation of uracil followed by a 6-endo trig cyclization. With sec-propargyl alcohols, the reaction furnished the propargylation of uracil. This atom economy ball milling reaction allows access to a broad range of dihydropyrido[2,3-d]pyrimidine derivatives in excellent yields. We demonstrated the gram scale synthesis of 3 g and post-synthetic modifications to effect the cyclization of 5 to 6.
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Affiliation(s)
- Srinivasarao Yaragorla
- University of Hyderabad (an Institute of Eminence), P.O. Central University, Gachibowli, 500046, Hyderabad, Telangana State, India
| | - Dandugula Sneha Latha
- University of Hyderabad (an Institute of Eminence), P.O. Central University, Gachibowli, 500046, Hyderabad, Telangana State, India
| | - Rituraj Kumar
- University of Hyderabad (an Institute of Eminence), P.O. Central University, Gachibowli, 500046, Hyderabad, Telangana State, India
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2
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Lv J, Zhou W, Gan J, Wang C. Synthesis of 2 H-Chromeno[2,3- b]tetrahydropyridine Frameworks through Cs 2CO 3-Promoted Annulation of 2-Amino-4 H-chromen-4-ones and 4-Benzylideneoxazol-5(4 H)-ones. J Org Chem 2024; 89:5181-5188. [PMID: 38517737 DOI: 10.1021/acs.joc.4c00100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/24/2024]
Abstract
This innovative reaction involved the [3+3] annulation of 2-amino-4H-chromen-4-ones and 4-benzylideneoxazol-5(4H)-ones. The process provided quick and easy access to a broad range of structurally diverse and highly functionalized 1,3,4,5-tetrahydro-2H-chromeno[2,3-b]pyridines in moderate to good yields, which possess trans-form C3 and C4 substituents.
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Affiliation(s)
- Jiaman Lv
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Wenyan Zhou
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Jianbo Gan
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
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3
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Liu Z, Li G, Xi M, Huang Y, Li H, Jin H, Ding J, Zhang S, Zhang C, Guo Z. Interfacial Engineering of Zn Metal via a Localized Conjugated Layer for Highly Reversible Aqueous Zinc Ion Battery. Angew Chem Int Ed Engl 2024; 63:e202319091. [PMID: 38308095 DOI: 10.1002/anie.202319091] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Revised: 01/30/2024] [Accepted: 02/02/2024] [Indexed: 02/04/2024]
Abstract
Aqueous zinc-ion batteries are regarded as promising and efficient energy storage systems owing to remarkable safety and satisfactory capacity. Nevertheless, the instability of zinc metal anodes, characterized by issues such as dendrite growth and parasitic side reactions, poses a significant barrier to widespread applications. Herein, we address this challenge by designing a localized conjugated structure comprising a cyclic polyacrylonitrile polymer (CPANZ), induced by a Zn2+-based Lewis acid (zinc trifluoromethylsulfonate) at a temperature of 120 °C. The CPANZ layer on the Zn anode, enriched with appropriate pyridine nitrogen-rich groups (conjugated cyclic -C=N-), exhibits a notable affinity for Zn2+ with ample deposition sites. This zincophilic skeleton not only serves as a protective layer to guide the deposition of Zn2+ but also functions as proton channel blocker, regulating the proton flux to mitigate the hydrogen evolution. Additionally, the strong adhesion strength of the CPANZ layer guarantees its sustained protection to the Zn metal during long-term cycling. As a result, the modified zinc electrode demonstrates long cycle life and high durability in both half-cell and pouch cells. These findings present a feasible approach to designing high performance aqueous anodes by introducing a localized conjugated layer.
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Affiliation(s)
- Zhenjie Liu
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830017, Xinjiang, China
| | - Guanjie Li
- School of Chemical Engineering, The University of Adelaide, Engineering North, North Terrace Campus, the University of Adelaide, Adelaide, South Australia, 5069, Australia
| | - Murong Xi
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830017, Xinjiang, China
| | - Yudai Huang
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830017, Xinjiang, China
| | - Haobo Li
- School of Chemical Engineering, The University of Adelaide, Engineering North, North Terrace Campus, the University of Adelaide, Adelaide, South Australia, 5069, Australia
| | - Huanyu Jin
- School of Chemical Engineering, The University of Adelaide, Engineering North, North Terrace Campus, the University of Adelaide, Adelaide, South Australia, 5069, Australia
| | - Juan Ding
- State Key Laboratory of Chemistry and Utilization of Carbon Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi, 830017, Xinjiang, China
| | - Shilin Zhang
- School of Chemical Engineering, The University of Adelaide, Engineering North, North Terrace Campus, the University of Adelaide, Adelaide, South Australia, 5069, Australia
| | - Chaofeng Zhang
- Institutes of Physical Science and Information Technology, Leibniz Joint Research Center of Materials Sciences, Engineering Laboratory of High-Performance Waterborne Polymer Materials of Anhui Province, Anhui Graphene Engineering Laboratory, Key Laboratory of Structure and Functional Regulation of Hybrid Material (Ministry of Education), Anhui University, Hefei, 230601, China
| | - Zaiping Guo
- School of Chemical Engineering, The University of Adelaide, Engineering North, North Terrace Campus, the University of Adelaide, Adelaide, South Australia, 5069, Australia
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4
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Tan J, He Y, Lin Y, Zhong Y, He S, Zuo J, Yang C. Synthesis of 2-amino-9 H-chromeno[2,3- d]thiazol-9-ones with anti-inflammatory activity via cascade reactions of 2-amino-3 iodochromones with amines and carbon disulfide. RSC Adv 2024; 14:3158-3162. [PMID: 38249667 PMCID: PMC10797327 DOI: 10.1039/d3ra07209f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/23/2023] [Accepted: 01/09/2024] [Indexed: 01/23/2024] Open
Abstract
A simple and efficient synthetic approach to 2-amino-9H-chromeno[2,3-d]thiazol-9-ones via copper-promoted cascade reactions was developed. The reaction employed easily available 2-amino-3-iodochromones and amines as substrates and the targeting tricyclic compounds could be obtained with moderate to good yields. Even more important, several synthesized compounds exhibited potent anti-inflammatory activities, which suggested that this protocol may provide valuable hits for drug development in the future.
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Affiliation(s)
- Jiangtao Tan
- State Key Laboratory of Drug Research, Shanghai Institute of Materia, Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 China
- School of Pharmacy, University of Chinese Academy of Sciences No. 19A YuquanRoad Beijing 100049 China
| | - Yifan He
- State Key Laboratory of Drug Research, Shanghai Institute of Materia, Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 China
- School of Pharmacy, University of Chinese Academy of Sciences No. 19A YuquanRoad Beijing 100049 China
| | - Yu Lin
- State Key Laboratory of Drug Research, Shanghai Institute of Materia, Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 China
| | - Yuanchen Zhong
- State Key Laboratory of Drug Research, Shanghai Institute of Materia, Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 China
| | - Shijun He
- State Key Laboratory of Drug Research, Shanghai Institute of Materia, Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 China
- Innovation Research Institute of Traditional Chinese Medicine, Shanghai University of Traditional Chinese Medicine Shanghai 201203 China
| | - Jianping Zuo
- State Key Laboratory of Drug Research, Shanghai Institute of Materia, Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 China
- School of Pharmacy, University of Chinese Academy of Sciences No. 19A YuquanRoad Beijing 100049 China
| | - Chunhao Yang
- State Key Laboratory of Drug Research, Shanghai Institute of Materia, Medica, Chinese Academy of Sciences 555 Zuchongzhi Road Shanghai 201203 China
- School of Pharmacy, University of Chinese Academy of Sciences No. 19A YuquanRoad Beijing 100049 China
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5
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Zhou W, Gan J, Li H, Wang C. ZnCl 2-Promoted Three-Component Reaction of 2-Aminochromenones, Aromatic Aldehydes, and Quinone Monoketals: Access to 5,6-Dihydro-12 H-chromeno[2,3- c]isoquinolin-12-one Derivatives. J Org Chem 2023; 88:14767-14774. [PMID: 37820027 DOI: 10.1021/acs.joc.3c01405] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/13/2023]
Abstract
A three-component reaction of 2-amino-4H-chromen-4-ones, aromatic aldehydes, and 4,4-dialkoxycyclohexa-2,5-dien-1-ones for the concise synthesis of chromeno[2,3-c]dihydroisoquinoline derivatives has been investigated. This reaction involved consecutive ZnCl2-promoted Micheal addition and intramolecular Friedel-Crafts alkylation. This synthetic protocol offered several advantages, including the readily accessible starting materials, good functional group tolerance, and simplicity of operation. Additionally, the structures of products obtained were determined based on X-ray diffraction studies.
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Affiliation(s)
- Wenyan Zhou
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Jianbo Gan
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Haiwen Li
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Street, Yangzhou 225002, P. R. China
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6
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Banda BP, Medishetti N, Nanubolu JB, Atmakur K. One-pot domino synthesis of five- and six-membered fused dihydropyridines promoted by PPh 3-NBS in aqueous medium. Org Biomol Chem 2023; 21:4434-4439. [PMID: 37183547 DOI: 10.1039/d3ob00472d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A facile one-pot synthesis of five- and six-membered fused dihydropyridines such as chromenodihydropyridines, pyrazolodihydropyridines and isoxazolopyridines was accomplished for the first time by employing PPh3-NBS via a formal [3 + 2 + 1] cycloaddition of 1,3-bisnucleophiles (i.e., 2-aminochromone, 4-aminochromone, 5-aminopyrazole and 5-aminoisoxazole), β-enaminones and aldehydes in aqueous medium. The present approach involves a Michael type addition followed by intramolecular cyclization leading to the formation of two new C-C bonds and one C-N bond. High compatibility and excellent yields are the advantages of this protocol.
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Affiliation(s)
- Bhanu Prasad Banda
- Fluoro & Agrochemicals Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500 007, India.
| | - Nagaraju Medishetti
- Fluoro & Agrochemicals Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500 007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Jagadeesh Babu Nanubolu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
- Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
| | - Krishnaiah Atmakur
- Fluoro & Agrochemicals Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500 007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
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7
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Medishetti N, Banda BP, Nanubolu JB, Atmakur K. TPP‐NBS Induced [3+3] Cascade Annulation of Propargylic Alcohols and 1,3‐Bis Nucleophiles: Access to Chromenopyridines, 1,2‐Dihydropyridines**. ChemistrySelect 2023. [DOI: 10.1002/slct.202204964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/04/2023]
Affiliation(s)
- Nagaraju Medishetti
- Fluoro-Agrochemicals Department CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Bhanu Prasad Banda
- Fluoro-Agrochemicals Department CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
| | - Jagadeesh Babu Nanubolu
- Laboratory of X-ray Crystallography CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Krishnaiah Atmakur
- Fluoro-Agrochemicals Department CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
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8
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Li H, Xin J, Xue Y, Wang C. DBU-Mediated Domino Annulation Reaction of 2-Amino-4 H-chromen-4-ones and Aromatic Aldehydes for Synthesis of Polysubstituted 3-Hydroxy-5 H-chromeno[2,3- b]pyridinones. J Org Chem 2022; 87:11857-11864. [PMID: 35960790 DOI: 10.1021/acs.joc.2c01152] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A pseudo-three-component annulation reaction of substituted 2-amino-4H-chromen-4-ones with aromatic aldehydes promoted by DBU was investigated to access polysubstituted 5H-chromeno[2,3-b]pyridines. This reaction included a sequential intermolecular nucleophilic addition/Michael cyclization/intramolecular epoxidation/ring opening/aromatization sequence, which possessed excellent step and atom economy in a single operation for generating 3-hydroxy-5H-chromeno[2,3-b]pyridines from readily available substrates.
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Affiliation(s)
- Haiwen Li
- School of Chemistry and Chemical Engineering, Yangzhou University,180 Siwangting Street, Yangzhou 225002, PR China
| | - Junhu Xin
- School of Chemistry and Chemical Engineering, Yangzhou University,180 Siwangting Street, Yangzhou 225002, PR China
| | - Yuhang Xue
- School of Chemistry and Chemical Engineering, Yangzhou University,180 Siwangting Street, Yangzhou 225002, PR China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering, Yangzhou University,180 Siwangting Street, Yangzhou 225002, PR China
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9
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Mishra S, Nair SR, Baire B. Recent approaches for the synthesis of pyridines and (iso)quinolines using propargylic Alcohols. Org Biomol Chem 2022; 20:6037-6056. [PMID: 35678139 DOI: 10.1039/d2ob00587e] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Propargylic alcohols are one of the readily available and highly explored building blocks in organic synthesis. They show distinct reactivities compared to simple alcohols and/or alkynes, and hence provide diverse possibilities to develop novel synthetic strategies for the construction of polycyclic systems, including heterocycles. The six-membered heterocycles, pyridines, quinolines, and isoquinolines, are very important privileged structures in medicinal chemistry and drug discovery due to their broad spectrum of biological activities. They are also part of vitamins, nucleic acids, pharmaceuticals, antibiotics, dyes, and agrochemicals. Many synthetic strategies have been developed for the rapid and efficient generation of these cyclic systems. One such strategy is employing the propargylic alcohols as reactants in the form of either a 3-carbon component or 2-carbon unit. Thus, in this review article, we aimed to summarize various approaches to pyridines, quinolines, and isoquinolines from propargylic alcohols. To the best of our knowledge, so far, no focused reviews have appeared on this topic in the literature. Due to the many reports available, we also restricted ourselves to the developments during the past 17 years, i.e., 2005-2021. We strongly believe that this review article provides comprehensive coverage of research articles on the title topic, and will be of great value for the organic synthetic community for further developments in this area of research.
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Affiliation(s)
- Surabhi Mishra
- Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
| | - Sindoori R Nair
- Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
| | - Beeraiah Baire
- Indian Institute of Technology Madras, Chennai, Tamil Nadu, 600036, India.
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10
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Medishetti N, Ittamalla C, Nanubolu JB, Atmakur K. Lewis Acid Zn(OTf)
2
Catalyzed Synthesis ofImidazo[1,2‐
a
]pyridines by [3+2] Annulation of 2‐Amino Pyridines and Propargylic Alcohols. ChemistrySelect 2022. [DOI: 10.1002/slct.202200063] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Nagaraju Medishetti
- Fluoro & Agrochemicals Department CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Chaitanya Ittamalla
- Fluoro & Agrochemicals Department CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
| | - Jagadeesh Babu Nanubolu
- Laboratory of X-ray Crystallography CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
| | - Krishnaiah Atmakur
- Fluoro & Agrochemicals Department CSIR-Indian Institute of Chemical Technology Tarnaka, Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad Uttar Pradesh 201002 India
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11
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Wang T, Zhang B, Hu L, Sun H, Wang Y, Zhai H, Cheng B. Synthesis of Chromeno[2,3- d]pyrimidin-5-one Derivatives from 1,3,5-Triazinanes via Two Different Reaction Pathways. J Org Chem 2022; 87:1348-1356. [PMID: 35012316 DOI: 10.1021/acs.joc.1c02649] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
1,3,5-Triazinanes, as a kind of versatile building block, are applied in the synthesis of chromeno[2,3-d]pyrimidin-5-one derivatives via two different reaction modes, which perfectly exhibits the powerful function of 1,3,5-triazinane as a three-atom synthon along with the structure variation of another substrate. The two annulation reactions proceed under mild conditions and bear broad substrate scope and high yield.
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Affiliation(s)
- Taimin Wang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Biwei Zhang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Lin Hu
- Chongqing Key Laboratory of Natural Product Synthesis and Drug Research, School of Pharmaceutical Sciences, Chongqing University, Chongqing 401331, China
| | - Haiyan Sun
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Yan Wang
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
| | - Hongbin Zhai
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China.,State Key Laboratory of Chemical Oncogenomics, Shenzhen Engineering Laboratory of Nano Drug Slow-Release, Peking University Shenzhen Graduate School, Shenzhen 518055, China
| | - Bin Cheng
- Institute of Marine Biomedicine/Hoffmann Institute of Advanced Materials, Shenzhen Polytechnic, Shenzhen 518055, China
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12
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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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13
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Ghobakhloo F, Azarifar D, Ghaemi M. A novel magnetic layered double hydroxide as potent mesoporous recyclable heterogeneous nanocatalyst for the synthesis of 1
H
‐chromeno[2,3‐
b
]pyridine‐3‐carbonitrile derivatives. Appl Organomet Chem 2021. [DOI: 10.1002/aoc.6395] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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14
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Kale A, Medishetti N, Babu Nanubolu J, Atmakur K. Acid‐Promoted Cascade Reaction of 4
H
‐Chromenes: Access to Hexahydronapthalenes via Decarboxylative Intramolecular Cyclization. ChemistrySelect 2021. [DOI: 10.1002/slct.202004076] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Ashok Kale
- Fluoro-Agrochemicals Department CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad, Uttar Pradesh 201002 India
| | - Nagaraju Medishetti
- Fluoro-Agrochemicals Department CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad, Uttar Pradesh 201002 India
| | - Jagadeesh Babu Nanubolu
- Laboratory of X-ray Crystallography CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad, Uttar Pradesh 201002 India
| | - Krishnaiah Atmakur
- Fluoro-Agrochemicals Department CSIR-Indian Institute of Chemical Technology, Tarnaka Hyderabad 500 007 India
- Academy of Scientific and Innovative Research (AcSIR) Ghaziabad, Uttar Pradesh 201002 India
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15
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Elinson MN, Ryzhkova YE, Ryzhkov FV. Multicomponent design of chromeno[2,3-b]pyridine systems. RUSSIAN CHEMICAL REVIEWS 2021. [DOI: 10.1070/rcr4972] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Abstract
The review summarizes and systematizes data on the methods for the preparation of chromeno[2,3-b]pyridines. Both multicomponent and pseudo-multicomponent synthetic approaches and one-pot transformations based on the reactions of carbonyl compounds, malononitrile or its derivatives, and CH-acids are considered. Examples of the use of various catalysts, microwave and ultrasonic radiation, as well as electric current for the implementation of multicomponent transformations of this type are given. Characteristic features of the course and mechanisms of reactions are discussed. Data on the biological activity of the obtained compounds and on other fields of application of such heterocyclic systems are presented.
The bibliography includes 109 references.
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16
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Li Y, Hu YC, Ji DW, Zhang WS, He GC, Cong YF, Chen QA. Acid-catalyzed chemoselective C- and O- prenylation of cyclic 1,3-diketones. CHINESE JOURNAL OF CATALYSIS 2020. [DOI: 10.1016/s1872-2067(20)63575-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
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