1
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Sau S, Mal P. Visible-Light Promoted Regioselective Oxygenation of Quinoxalin-2(1 H)-ones Using O 2 as an Oxidant. J Org Chem 2022; 87:14565-14579. [PMID: 36214497 DOI: 10.1021/acs.joc.2c01960] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A visible-light-mediated sustainable approach for metal-free oxygenation of quinoxalin-2(1H)-one by employing Mes-Acr-MeClO4 as a photocatalyst without using any additive or cocatalyst is reported here. O2 served as the eco-friendly and green oxidant source for this conversion. In addition, the protocol exhibited high regioselectivity and tolerance toward a broad spectrum of functional groups to furnish quinoxaline-2,3-diones in good to excellent yields.
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Affiliation(s)
- Sudip Sau
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhaba National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), An OCC of Homi Bhaba National Institute, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
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2
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Silver-catalyzed cross-dehydrogenative coupling of benzoxazine-2-ones with resorcinol. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154184] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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3
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Ionic liquid-catalyzed synthesis of (1,4-benzoxazin-3-yl) malonate derivatives via cross-dehydrogenative-coupling reactions. HETEROCYCL COMMUN 2022. [DOI: 10.1515/hc-2022-0007] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
A convenient C(sp3)–C(sp3) oxidative dehydrogenative coupling reaction of 1,4-benzoxazin-2-ones with malonate esters was developed under mild conditions to obtain the respective ester malonates in high yields. Reactions take place in [omim]FeCl4, acting as both the solvent and the catalyst. Under [omim]Cl/FeCl3-DDQ conditions, derivatives of 1 coupled with malonate 2 to give the target molecules within 1–2 h time periods. The ionic liquid was recovered and reused in the next reactions without losing its efficiency.
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4
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Wan S, Wang J, Huo C. Copper catalyzed aerobic oxidative amination of 3,4-dihydroquinoxalin-2(1H)-ones. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153271] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
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5
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Sharifi A, Babaalian Z, Abaee MS, Moazami M, Mirzaei M. Synergistic promoting effect of ball milling and Fe(ii) catalysis for cross-dehydrogenative-coupling of 1,4-benzoxazinones with indoles. HETEROCYCL COMMUN 2021. [DOI: 10.1515/hc-2020-0123] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
Abstract
In this work, a novel C(sp3)–C(sp2) cross-dehydrogenative-coupling method is developed to react benzoxazin-2-one derivatives with various indoles. As a result, combined use of ball milling and Fe(ii) catalysis leads to rapid coupling of 1,4-benzoxazinones with derivatives of indole. Under the conditions, derivatives of 1 couple with various indoles at room temperature to produce good yields of the desired compounds within 0.5–2 h time period. Thus, derivatives of both starting materials couple smoothly under relatively mild conditions to give good yields of 3.
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Affiliation(s)
- Ali Sharifi
- Organic Chemistry Department, Chemistry and Chemical Engineering Research Center of Iran , P. O. Box 14335-186 , Tehran , Iran
| | - Zahra Babaalian
- Organic Chemistry Department, Chemistry and Chemical Engineering Research Center of Iran , P. O. Box 14335-186 , Tehran , Iran
| | - M. Saeed Abaee
- Organic Chemistry Department, Chemistry and Chemical Engineering Research Center of Iran , P. O. Box 14335-186 , Tehran , Iran
| | - Maryam Moazami
- Organic Chemistry Department, Chemistry and Chemical Engineering Research Center of Iran , P. O. Box 14335-186 , Tehran , Iran
| | - Mojtaba Mirzaei
- Organic Chemistry Department, Chemistry and Chemical Engineering Research Center of Iran , P. O. Box 14335-186 , Tehran , Iran
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6
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Lu D, Cui J, Yang S, Gong Y. Iron-Catalyzed Cyanoalkylation of Glycine Derivatives Promoted by Pyridine-Oxazoline Ligands. ACS Catal 2021. [DOI: 10.1021/acscatal.1c00557] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Dengfu Lu
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China
| | - Jiajia Cui
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China
| | - Sen Yang
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China
| | - Yuefa Gong
- School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, 1037 Luoyu Rd., Wuhan, Hubei 430074, China
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7
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Hunjan MK, Panday S, Gupta A, Bhaumik J, Das P, Laha JK. Recent Advances in Functionalization of Pyrroles and their Translational Potential. CHEM REC 2021; 21:715-780. [PMID: 33650751 DOI: 10.1002/tcr.202100010] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/12/2021] [Revised: 02/08/2021] [Accepted: 02/10/2021] [Indexed: 12/25/2022]
Abstract
Among the known aromatic nitrogen heterocycles, pyrrole represents a privileged aromatic heterocycle ranging its occurrence in the key component of "pigments of life" to biologically active natural products to active pharmaceuticals. Pyrrole being an electron-rich heteroaromatic compound, its predominant functionalization is legendary to aromatic electrophilic substitution reactions. Although a few excellent reviews on the functionalization of pyrroles including the reports by Baltazzi in 1963, Casiraghi and Rassu in 1995, and Banwell in 2006 are available, they are fragmentary and over fifteen years old, and do not cover the modern aspects of catalysis. A review covering a comprehensive package of direct functionalization on pyrroles via catalytic and non-catalytic methods including their translational potential is described. Subsequent to statutory yet concise introduction, the classical functionalization on pyrroles using Lewis acids largely following an ionic mechanism is discussed. The subsequent discussion follows the various metal-catalyzed C-H functionalization on pyrroles, which are otherwise difficult to implement by Lewis acids. A major emphasize is given on the radical based pyrrole functionalization under metal-free oxidative conditions, which is otherwise poorly highlighted in the literature. Towards the end, the current development of pyrrole functionalization under photocatalyzed and electrochemical conditions is appended. Only a selected examples of substrates and important mechanisms are discussed for different methods highlighting their scopes and limitations. The aromatic nucleophillic substitution on pyrroles (being an electron-rich heterocycle) happened to be the subject of recent investigations, which has also been covered accentuating their underlying conceptual development. Despite great achievements over the past several years in these areas, many challenges and problems are yet to be solved, which are all discussed in summary and outlook.
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Affiliation(s)
- Mandeep Kaur Hunjan
- Department of Pharmaceutial Technology (Process Chemistry), National Institute of Pharmaceutical Education & Research (NIPER) S.A.S. Nagar, Mohali, 160062, India
| | - Surabhi Panday
- Department of Pharmaceutial Technology (Process Chemistry), National Institute of Pharmaceutical Education & Research (NIPER) S.A.S. Nagar, Mohali, 160062, India
| | - Anjali Gupta
- Department of Pharmaceutial Technology (Process Chemistry), National Institute of Pharmaceutical Education & Research (NIPER) S.A.S. Nagar, Mohali, 160062, India
| | - Jayeeta Bhaumik
- Center of Innovative and Applied Bioprocessing (CIAB), Department of Biotechnology (DBT), Government of India, Sector 81 (Knowledge City), S.A.S., Nagar, 140306, Punjab, India
| | - Parthasarathi Das
- Department of Chemistry, Indian Institute of Technology (Indian School of Mines) Dhanbad, Dhanbad, 826004, India
| | - Joydev K Laha
- Department of Pharmaceutial Technology (Process Chemistry), National Institute of Pharmaceutical Education & Research (NIPER) S.A.S. Nagar, Mohali, 160062, India
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8
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Kim SY, Han GH, Hong SK, Park J, Park YS. Divergent Reactions of
2‐Aminophenol
with
α‐Bromoacetate
: Asymmetric Synthesis of Two Regioisomeric 1,
4‐Benzoxazinones. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12165] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Seo Yun Kim
- Department of Chemistry Konkuk University, 120 Neungdong‐ro, Gwangjin‐gu Seoul 05029 Korea
| | - Gun Hee Han
- Department of Chemistry Konkuk University, 120 Neungdong‐ro, Gwangjin‐gu Seoul 05029 Korea
| | - Su Kyung Hong
- Department of Chemistry Konkuk University, 120 Neungdong‐ro, Gwangjin‐gu Seoul 05029 Korea
| | - Jieun Park
- Department of Chemistry Konkuk University, 120 Neungdong‐ro, Gwangjin‐gu Seoul 05029 Korea
| | - Yong Sun Park
- Department of Chemistry Konkuk University, 120 Neungdong‐ro, Gwangjin‐gu Seoul 05029 Korea
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9
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Nie XX, Huang YH, Wang P. Thianthrenation-Enabled α-Arylation of Carbonyl Compounds with Arenes. Org Lett 2020; 22:7716-7720. [DOI: 10.1021/acs.orglett.0c02913] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Xiao-Xue Nie
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences (CAS), 345 Lingling Road, Shanghai 200032, P. R. China
| | - Yu-Hao Huang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences (CAS), 345 Lingling Road, Shanghai 200032, P. R. China
| | - Peng Wang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular Synthesis, Shanghai Institute of Organic Chemistry, University of Chinese Academy of Sciences (CAS), 345 Lingling Road, Shanghai 200032, P. R. China
- CAS Key Laboratory of Energy Regulation Materials, Shanghai Institute of Organic Chemistry, CAS, 345 Lingling Road, Shanghai 200032, P. R. China
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10
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Saha M, Das AR. Nanocrystalline ZnO: A Competent and Reusable Catalyst for the Preparation of Pharmacology Relevant Heterocycles in the Aqueous Medium. CURRENT GREEN CHEMISTRY 2020. [DOI: 10.2174/2213346107666200218122718] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
:Nanoparticle catalyzed synthesis is a green and convenient method to achieve most of the chemical transformations in water or other green solvents. Nanoparticle ensures an easy isolation process of catalyst as well as products from the reaction mixture avoiding the hectic work up procedure. Zinc oxide is a biocompatible, environmentally benign and economically viable nanocatalyst with effectivity comparable to the other metal nanocatalyst employed in several reaction strategies. This review mainly focuses on the recent applications of zinc oxide in the synthesis of biologically important heterocyclic molecules under sustainable reaction conditions.:Application of zinc oxide in organic synthesis: Considering the achievable advantages of this nanocatalyst, presently several research groups are paying attention in anchoring zincoxide or its modified structure in several types of organic conversions e.g. multicomponent reactions, ligand-free coupling reactions, cycloaddition reaction, etc. The advantages and limitations of this nanocatalyst are also demonstrated. The present study aims to highlight the recent multifaceted applications of ZnO towards the synthesis of diverse heterocyclic motifs. Being a promising biocompatible nanoparticle, this catalyst has an important contribution in the fields of synthetic chemistry and medicinal chemistry.
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Affiliation(s)
- Moumita Saha
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
| | - Asish R. Das
- Department of Chemistry, University of Calcutta, Kolkata-700009, India
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11
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[Omim]Cl/FeCl3-catalyzed cross-dehydrogenative-coupling of 1,4-benzoxazinones with various indoles. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2020. [DOI: 10.1007/s13738-020-01941-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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12
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Wang J, Bao X, Wang J, Huo C. Peroxidation of 3,4-dihydro-1,4-benzoxazin-2-ones. Chem Commun (Camb) 2020; 56:3895-3898. [PMID: 32134057 DOI: 10.1039/c9cc09778c] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
The sp3-C-H peroxidation of 3,4-dihydro-1,4-benzoxazin-2-ones was achieved under mild and simple catalyst-free reaction conditions. A range of biologically important alkylated benzoxazinone peroxides are synthesized in high yield with a good functional group tolerance. The C(sp3)-OO bond was constructed efficiently and could be further converted into C(sp3)-C(sp3), C(sp3)-C(sp2), C(sp3)-C(sp), C-P and C[double bond, length as m-dash]O bonds by late-stage functional group transformations.
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Affiliation(s)
- Jie Wang
- Gansu International Scientific and Technological Cooperation Base of Water-Retention Chemical Functional Materials, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China.
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13
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Shi X, Dong M, Duan X, Cao T, Qi J. N
‐Heterocyclic Carbene Catalyzed [3+2] Cycloaddition of Enals with
β,γ
‐Unsaturated
α
‐Ketimino Esters for the Synthesis of Multisubstituted Cyclopentanone. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901144] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Affiliation(s)
- Xiao‐Qian Shi
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental ScienceHebei University
| | - Meng‐Die Dong
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental ScienceHebei University
| | - Xiao‐Yong Duan
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental ScienceHebei University
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of EducationHebei University
| | - Teng‐Liang Cao
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental ScienceHebei University
| | - Jing Qi
- Key Laboratory of Chemical Biology of Hebei Province, College of Chemistry and Environmental ScienceHebei University
- Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of EducationHebei University
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14
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Borpatra PJ, Rastogi GK, Saikia MB, Deb ML, Baruah PK. Multi‐Component Reaction of 6‐Aminouracils, Aldehydes and Secondary Amines: Conversion of the Products into Pyrimido[4,5‐
d
]pyrimidines through C‐H Amination/Cyclization. ChemistrySelect 2019. [DOI: 10.1002/slct.201900210] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Paran J. Borpatra
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
| | - Gaurav K. Rastogi
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
- Applied Organic Chemistry, CSIR-NEIST Jorhat- 785006 Assam
| | - Ms. B‐S. Saikia
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
| | - Mohit L. Deb
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
| | - Pranjal K. Baruah
- Department of Applied Sciences, GUISTGauhati University, Guwahati- 781014 Assam India
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15
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9,10-Phenanthrenedione as Visible-Light Photoredox Catalyst: A Green Methodology for the Functionalization of 3,4-Dihydro-1,4-Benzoxazin-2-Ones through a Friedel-Crafts Reaction. Catalysts 2018. [DOI: 10.3390/catal8120653] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023] Open
Abstract
A visible-light photoredox functionalization of 3,4-dihydro-1,4-benzoxazin-2-ones through a Friedel-Crafts reaction with indoles using an inexpensive organophotoredox catalyst is described. The reaction uses a dual catalytic system that is formed by a photocatalyst simple and cheap, 9,10-phenanthrenedione, and a Lewis acid, Zn(OTf)2. 5W white LEDs are used as visible-light source and oxygen from air as a terminal oxidant, obtaining the corresponding products with good yields. The reaction can be extended to other electron-rich arenes. Our methodology represents one of the most valuable and sustainable approach for the functionalization of 3,4-dihydro-1,4-benzoxazin-2-ones, as compared to the reported procedures. Furthermore, several transformations were carried out, such as the synthesis of the natural product cephalandole A and a tryptophol derivative.
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16
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Viji M, Sim J, Li S, Lee H, Oh K, Jung JK. Organocatalytic and Regiodivergent Mannich Reaction of Ketones with Benzoxazinones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800870] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Mayavan Viji
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Jaeuk Sim
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Siyuan Li
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Heesoon Lee
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
| | - Kyungsoo Oh
- Center for Metareceptome Research; College of Pharmacy, Chung-Ang University, 84 Heukseok-ro, Dongjak; Seoul 06974 Republic of Korea
| | - Jae-Kyung Jung
- College of Pharmacy and Medicinal Research Center (MRC); Chungbuk National University; Cheongju 28160 Republic of Korea
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17
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Sharma V, Jaiswal PK, Kumar K, Saran M, Mathur M, Swami AK, Chaudhary S. An efficient synthesis and biological evaluation of novel analogues of natural product Cephalandole A: A new class of antimicrobial and antiplatelet agents. Fitoterapia 2018; 129:13-19. [DOI: 10.1016/j.fitote.2018.06.003] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Revised: 05/29/2018] [Accepted: 06/03/2018] [Indexed: 01/05/2023]
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18
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Jiang W, Wang Y, Niu P, Quan Z, Su Y, Huo C. Double-Oxidative Dehydrogenative (DOD) [4 + 2]-Cyclization/Oxidative Aromatization Tandem Reaction of Glycine Derivatives with Ethylbenzenes. Org Lett 2018; 20:4649-4653. [DOI: 10.1021/acs.orglett.8b01941] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Affiliation(s)
- Wei Jiang
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Yajun Wang
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Pengfei Niu
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Zhengjun Quan
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Yingpeng Su
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
| | - Congde Huo
- Key Laboratory of Eco-Environment-Related Polymer Materials Ministry of Education, College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou, Gansu 730070, China
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19
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Zhang GY, Yu KX, Zhang C, Guan Z, He YH. Oxidative Cross-Dehydrogenative-Coupling Reaction of 3,4-Dihydro-1,4-Benzoxazin-2-ones through Visible-Light Photoredox Catalysis. European J Org Chem 2018. [DOI: 10.1002/ejoc.201701683] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Guo-Yan Zhang
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University; 400715 Chongqing P. R. China
| | - Kai-Xin Yu
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University; 400715 Chongqing P. R. China
| | - Chen Zhang
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University; 400715 Chongqing P. R. China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University; 400715 Chongqing P. R. China
| | - Yan-Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality; School of Chemistry and Chemical Engineering; Southwest University; 400715 Chongqing P. R. China
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20
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Akula PS, Hong BC, Lee GH. Visible-light-induced C(sp3)–H activation for a C–C bond forming reaction of 3,4-dihydroquinoxalin-2(1H)-one with nucleophiles using oxygen with a photoredox catalyst or under catalyst-free conditions. RSC Adv 2018; 8:19580-19584. [PMID: 35540997 PMCID: PMC9080698 DOI: 10.1039/c8ra03259a] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/16/2018] [Accepted: 05/15/2018] [Indexed: 01/10/2023] Open
Abstract
A convenient photocatalyzed oxidative coupling reaction of 4-alkyl-3,4-dihydroquinoxalin-2(1H)-one and its derivatives with a variety of nucleophiles was developed with a ruthenium photoredox catalyst and oxygen under a household compact fluorescent light. With a slower reaction rate, the cross coupling transformation can be achieved in the absence of an external photocatalyst with a similar isolated yield. An application to the synthesis of natural product cephalandole A was also demonstrated. A convenient photocatalyzed coupling reaction of 4-alkyl-3,4-dihydroquinoxalin-2(1H)-one with a variety of nucleophiles was developed with a household compact fluorescent light. The synthesis of natural product cephalandole A was also demonstrated.![]()
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Affiliation(s)
- Pavan Sudheer Akula
- Department of Chemistry and Biochemistry
- National Chung Cheng University
- Chia-Yi 621
- Republic of China
| | - Bor-Cherng Hong
- Department of Chemistry and Biochemistry
- National Chung Cheng University
- Chia-Yi 621
- Republic of China
| | - Gene-Hsiang Lee
- Instrumentation Center
- National Taiwan University
- Taipei
- Taiwan
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21
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Wang J, Li J, Wei Y, Yang J, Huo C. Copper-catalyzed oxidative phosphonation of 3,4-dihydro-1,4-benzoxazin-2-ones. Org Chem Front 2018. [DOI: 10.1039/c8qo01049h] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
A straight-forward and atom-economical Cu(ii)/PBQ-catalyzed oxidative Pudovik reaction of 3,4-dihydro-1,4-benzoxazin-2-ones has been developed to construct new Csp3–P bonds.
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Affiliation(s)
- Jie Wang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Jun Li
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Yuanyuan Wei
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Jingya Yang
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
| | - Congde Huo
- College of Chemistry and Chemical Engineering
- Northwest Normal University
- Lanzhou
- China
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22
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Dong J, Min W, Li H, Quan Z, Yang C, Huo C. Iron-Catalyzed C(sp
3
)−C(sp
3
) Bond Formation in 3,4-Dihydro-1,4-benzoxazin-2-ones. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700816] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Jie Dong
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou Gansu 730070 People's Republic of China
| | - Wenjian Min
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou Gansu 730070 People's Republic of China
| | - Haitao Li
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou Gansu 730070 People's Republic of China
| | - Zhengjun Quan
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou Gansu 730070 People's Republic of China
| | - Caixia Yang
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou Gansu 730070 People's Republic of China
| | - Congde Huo
- College of Chemistry and Chemical Engineering; Northwest Normal University; Lanzhou Gansu 730070 People's Republic of China
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23
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San Segundo M, Guerrero I, Correa A. Co-Catalyzed C(sp3)–H Oxidative Coupling of Glycine and Peptide Derivatives. Org Lett 2017; 19:5288-5291. [DOI: 10.1021/acs.orglett.7b02567] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Marcos San Segundo
- Department of Organic Chemistry-I, University of the Basque Country (UPV-EHU), Joxe Mari Korta R&D Center, Av. Tolosa 72, 20018 Donostia-San Sebastián, Spain
| | - Itziar Guerrero
- Department of Organic Chemistry-I, University of the Basque Country (UPV-EHU), Joxe Mari Korta R&D Center, Av. Tolosa 72, 20018 Donostia-San Sebastián, Spain
| | - Arkaitz Correa
- Department of Organic Chemistry-I, University of the Basque Country (UPV-EHU), Joxe Mari Korta R&D Center, Av. Tolosa 72, 20018 Donostia-San Sebastián, Spain
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24
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Affiliation(s)
- Eike B. Bauer
- University of Missouri - St. Louis; Department of Chemistry and Biochemistry; One University Boulevard St. Louis, MO 63121 USA
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25
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“On water” ultrasound-assisted one pot efficient synthesis of functionalized 2-oxo-benzo[1,4]oxazines: First application to the synthesis of anticancer indole alkaloid, Cephalandole A. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.048] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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26
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Kaiser D, de la Torre A, Shaaban S, Maulide N. Metal-Free Formal Oxidative C-C Coupling by In Situ Generation of an Enolonium Species. Angew Chem Int Ed Engl 2017; 56:5921-5925. [PMID: 28429392 DOI: 10.1002/anie.201701538] [Citation(s) in RCA: 92] [Impact Index Per Article: 13.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2017] [Revised: 03/11/2017] [Indexed: 01/27/2023]
Abstract
Much contemporary organic synthesis relies on transformations that are driven by the intrinsic, so-called "natural", polarity of chemical bonds and reactive centers. The design of unconventionally polarized synthons is a highly desirable strategy, as it generally enables unprecedented retrosynthetic disconnections for the synthesis of complex substances. Whereas the umpolung of carbonyl centers is a well-known strategy, polarity reversal at the α-position of a carbonyl group is much rarer. Herein, we report the design of a novel electrophilic enolonium species and its application in efficient and chemoselective, metal-free oxidative C-C coupling.
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Affiliation(s)
- Daniel Kaiser
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Aurélien de la Torre
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Saad Shaaban
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
| | - Nuno Maulide
- Institute of Organic Chemistry, University of Vienna, Währinger Strasse 38, 1090, Wien, Austria
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27
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Kaiser D, de la Torre A, Shaaban S, Maulide N. Metallfreie formale oxidative C-C-Kupplung durch In-situ-Erzeugung einer elektrophilen Enoloniumspezies. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201701538] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Daniel Kaiser
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Aurélien de la Torre
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Saad Shaaban
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
| | - Nuno Maulide
- Institut für Organische Chemie; Universität Wien; Währinger Straße 38 1090 Wien Österreich
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28
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Varun BV, Dhineshkumar J, Bettadapur KR, Siddaraju Y, Alagiri K, Prabhu KR. Recent advancements in dehydrogenative cross coupling reactions for CC bond formation. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.035] [Citation(s) in RCA: 121] [Impact Index Per Article: 17.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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29
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Liu T, Min D, Liang Y, Yuan X, Zhang Y, Liu J, Tang S. Regiodivergent radical oxidative coupling of vinyl ethers with dithiane by copper or iron catalysis. Org Chem Front 2017. [DOI: 10.1039/c7qo00422b] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
Direct regioselective C–H dithioacetalization of readily available vinyl ethers to yield a variety of substituted dithianes under a copper or iron catalysis has been developed.
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Affiliation(s)
- Teng Liu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Deng Min
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yongping Liang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Xinyu Yuan
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Yuan Zhang
- State Key Laboratory of Applied Organic Chemistry
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Jian Liu
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Shouchu Tang
- School of Pharmacy
- Lanzhou University
- Lanzhou 730000
- P. R. China
- State Key Laboratory of Applied Organic Chemistry
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30
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Pandit RP, Shim JJ, Kim SH, Lee YR. Copper-catalyzed direct coupling of benzoxazin-2-ones with indoles for the synthesis of diverse 3-indolylbenzoxazin-2-ones: access to natural cephalandole A. RSC Adv 2017. [DOI: 10.1039/c7ra10634c] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Diverse and functionalized 3-indolyl benzo[b][1,4]oxazin-2-ones were synthesized via copper-catalyzed direct coupling of benzo[b][1,4]oxazin-2-one and indoles in air.
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Affiliation(s)
| | - Jae-Jin Shim
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan
- Republic of Korea
| | - Sung Hong Kim
- Analysis Research Division
- Daegu Center
- Korea Basic Science Institute
- Daegu 41566
- Republic of Korea
| | - Yong Rok Lee
- School of Chemical Engineering
- Yeungnam University
- Gyeongsan
- Republic of Korea
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31
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Mendive-Tapia L, Albornoz-Grados A, Bertran A, Albericio F, Lavilla R. Oxidative couplings on tryptophan-based diketopiperazines leading to fused and bridged chemotypes. Chem Commun (Camb) 2017; 53:2740-2743. [DOI: 10.1039/c7cc00555e] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Selective C–C and C–N oxidative couplings on tryptophan-based diketopiperazines allow the direct access to two novel scaffolds.
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Affiliation(s)
- Lorena Mendive-Tapia
- Department of Inorganic and Organic Chemistry
- University of Barcelona
- 08028 Barcelona
- Spain
| | | | - Alexandra Bertran
- Department of Inorganic and Organic Chemistry
- University of Barcelona
- 08028 Barcelona
- Spain
| | - Fernando Albericio
- Department of Inorganic and Organic Chemistry
- University of Barcelona
- 08028 Barcelona
- Spain
- CIBER-BBN
| | - Rodolfo Lavilla
- CIBER-BBN
- Networking Centre on Bioengineering, Biomaterials and Nanomedicine
- 08028 Barcelona
- Spain
- Laboratory of Organic Chemistry
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