1
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Zhuang D, Wu Y, Wang S, Tao Y, Liu P, Luo X, Wang T, Yan R. TFA-Mediated Synthesis of 1,2,4-Oxadiazoles from Carbamates and Nitriles. J Org Chem 2024; 89:7330-7338. [PMID: 38685200 DOI: 10.1021/acs.joc.4c00640] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/02/2024]
Abstract
An unprecedented protocol for the synthesis of 1,2,4-oxadiazoles from carbamates has been developed by employing nitriles as both substrates and solvents. This one-pot procedure achieves the formation of C═N bonds via TFA-mediated [3+2] annulation. A series of 1,2,4-oxadiazoles are synthesized in moderate to good yields.
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Affiliation(s)
- Daijiao Zhuang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Yuankun Wu
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Shuairan Wang
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Yuelin Tao
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
| | - Peihua Liu
- Research Institute of Oil and Gas Technology of Changqing Oilfield Company, Xian 710018, Shanxi, China
| | - Xiaofeng Luo
- Chengdu Guibao Science and Technology Company, Ltd., Chengdu 610041, Sichuan, China
| | - Tianqiang Wang
- Chengdu Guibao Science and Technology Company, Ltd., Chengdu 610041, Sichuan, China
| | - Rulong Yan
- State Key Laboratory of Applied Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou 730000, Gansu, China
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2
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Zhong L, Wu C, Li M, Wu J, Chen Y, Ju Z, Tan C. 1,2,4-Oxadiazole as a potential scaffold in agrochemistry: a review. Org Biomol Chem 2023; 21:7511-7524. [PMID: 37671568 DOI: 10.1039/d3ob00934c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/07/2023]
Abstract
N,O-containing heterocycles have been incorporated into various approved pesticides and pesticide candidates. The persistent challenge in contemporary crop protection lies in the continuous pursuit of novel N,O-heterocycle-containing compounds with pesticidal properties. Among them, the 1,2,4-oxadiazole scaffold is one of the most extensively explored heterocycles in new pesticide discovery and development. This review focuses on elucidating the molecular design strategy employed along with highlighting the bioactivity of 1,2,4-oxadiazole derivatives since 2012. Throughout this time frame, tioxazafen and flufenoxadiazam have emerged as prominent examples in which 1,2,4-oxadiazole derivatives were utilized as the core active structure within numerous applications. Additionally, the preparation methods for substituted 1,2,4-oxadiazole derivatives are elaborated upon, and their potential value within agrochemistry is discussed.
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Affiliation(s)
- Liangkun Zhong
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Changyuan Wu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Mimi Li
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Junhui Wu
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Yang Chen
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Zhiran Ju
- Institute of Pharmaceutical Science and Technology, Collaborative Innovation Center of Yangtze River Delta Region Green Pharmaceuticals, Zhejiang University of Technology, Hangzhou 310014, China.
| | - Chengxia Tan
- College of Chemical Engineering, Zhejiang University of Technology, Hangzhou 310014, China.
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3
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Mendogralo EY, Nesterova LY, Nasibullina ER, Shcherbakov RO, Tkachenko AG, Sidorov RY, Sukonnikov MA, Skvortsov DA, Uchuskin MG. The Synthesis and Biological Evaluation of 2-(1 H-Indol-3-yl)quinazolin-4(3 H)-One Derivatives. Molecules 2023; 28:5348. [PMID: 37513221 PMCID: PMC10384628 DOI: 10.3390/molecules28145348] [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: 06/16/2023] [Revised: 07/03/2023] [Accepted: 07/08/2023] [Indexed: 07/30/2023] Open
Abstract
The treatment of many bacterial diseases remains a significant problem due to the increasing antibiotic resistance of their infectious agents. Among others, this is related to Staphylococcus aureus, especially methicillin-resistant S. aureus (MRSA) and Mycobacterium tuberculosis. In the present article, we report on antibacterial compounds with activity against both S. aureus and MRSA. A straightforward approach to 2-(1H-indol-3-yl)quinazolin-4(3H)-one and their analogues was developed. Their structural and functional relationships were also considered. The antimicrobial activity of the synthesized compounds against Mycobacterium tuberculosis H37Rv, S. aureus ATCC 25923, MRSA ATCC 43300, Candida albicans ATCC 10231, and their role in the inhibition of the biofilm formation of S. aureus were reported. 2-(5-Iodo-1H-indol-3-yl)quinazolin-4(3H)-one (3k) showed a low minimum inhibitory concentration (MIC) of 0.98 μg/mL against MRSA. The synthesized compounds were assessed via molecular docking for their ability to bind long RSH (RelA/SpoT homolog) proteins using mycobacterial and streptococcal (p)ppGpp synthetase structures as models. The cytotoxic activity of some synthesized compounds was studied. Compounds 3c, f, g, k, r, and 3z displayed significant antiproliferative activities against all the cancer cell lines tested. Indolylquinazolinones 3b, 3e, and 3g showed a preferential suppression of the growth of rapidly dividing A549 cells compared to slower growing fibroblasts of non-tumor etiology.
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Affiliation(s)
- Elena Y Mendogralo
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
| | - Larisa Y Nesterova
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
- Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Goleva St. 13, 614081 Perm, Russia
| | | | - Roman O Shcherbakov
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
| | - Alexander G Tkachenko
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
- Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Goleva St. 13, 614081 Perm, Russia
| | - Roman Y Sidorov
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
- Institute of Ecology and Genetics of Microorganisms, Ural Branch of the Russian Academy of Sciences, Goleva St. 13, 614081 Perm, Russia
| | - Maxim A Sukonnikov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
| | - Dmitry A Skvortsov
- Department of Chemistry, M.V. Lomonosov Moscow State University, Leninskie Gory 1-3, 119991 Moscow, Russia
| | - Maxim G Uchuskin
- Department of Chemistry, Perm State University, Bukireva St. 15, 614990 Perm, Russia
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4
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Yan C, Zhang M, Li J, Zhang J, Wu Y. Thiol-promoted intermolecular cyclization to synthesize 1,2,4-oxadiazoles including tioxazafen under transition metal-free conditions. Org Biomol Chem 2023. [PMID: 37376991 DOI: 10.1039/d3ob00770g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/29/2023]
Abstract
A simple and efficient one-pot intermolecular annulation reaction for the synthesis of 1,2,4-oxadiazoles from amidoximes and benzyl thiols has been developed, in which benzyl thiols act as not only reactants but also organo-catalysts. The control experiments proved that thiol substrates could facilitate the dehydroaromatization step. High yield, functional group diversity and transition metal-free, extra oxidant-free, and mild conditions are the important practical features. Moreover, this protocol provides an effective alternative method for the synthesis of a commercially available broad-spectrum nematicide, tioxazafen.
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Affiliation(s)
- Congcong Yan
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Min Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jiaxin Li
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
| | - Jinli Zhang
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
- Henan Key Laboratory of Chemical Biology and Organic Chemistry; Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou, 450052, P.R. China.
| | - Yangjie Wu
- Green Catalysis Center, and College of Chemistry, Zhengzhou University, Zhengzhou 450001, P. R. China
- Henan Key Laboratory of Chemical Biology and Organic Chemistry; Key Laboratory of Applied Chemistry of Henan Universities, Zhengzhou University, Zhengzhou, 450052, P.R. China.
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5
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Facile Synthesis of Tricyclic 1,2,4-Oxadiazolines-Fused Tetrahydro-Isoquinolines from Oxime Chlorides with 3,4-Dihydroisoquinoline Imines. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27103064. [PMID: 35630538 PMCID: PMC9145198 DOI: 10.3390/molecules27103064] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/16/2022] [Revised: 05/05/2022] [Accepted: 05/09/2022] [Indexed: 11/25/2022]
Abstract
A mild and efficient strategy for the synthesis of tricyclic 1,2,4-oxadiazolines-fused tetrahydro-isoquinolines derivatives via [3 + 2] cycloaddition reaction is reported. The reactions provided the functionalized tricyclic 1,2,4-oxadiazolines in high yields (up to 96%). This protocol is simple and easy to handle. Moreover, a gram-scale experiment further highlights the synthetic utility. The chemical structure of the product was determined by X-ray single-crystal structure analysis. A possible mechanism for this transformation is proposed to explain the reaction process.
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6
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Kulkarni PS, Sarda SR, Khandebharad AU, Farooqui M, Agrawal BR. Pyrazole Linked-1,2,4-Oxadiazole Derivatives as Potential Pharmacological Agent: Design, Synthesis and Antimicrobial Study. Polycycl Aromat Compd 2022. [DOI: 10.1080/10406638.2022.2072914] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
Affiliation(s)
| | - Swapnil R. Sarda
- Department of Chemistry, J. E. S. College, Jalna, Maharashtra, India
| | | | - Mazahar Farooqui
- Department of Chemistry, Maulana Azad College, Aurangabad, Maharashtra, India
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7
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Jiang C, Li M, Xu L, Yi Y, Ye J, Hu A. Electrochemical synthesis of 1,2,4-oxadiazoles from amidoximes through dehydrogenative cyclization. Org Biomol Chem 2021; 19:10611-10616. [PMID: 34854450 DOI: 10.1039/d1ob02040d] [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 convenient and efficient method for the generation of the iminoxy radical through anodic oxidation was developed for the synthesis of 3,5-disubstituted 1,2,4-oxadiazoles from N-benzyl amidoximes. The transformation proceeds through 1.5-Hydrogen Atom Transfer (1,5-HAT) and intramolecular cyclization. The process features simple operation, mild conditions, broad substrate scope and high functional group compatibility, and provides a facile and practical way for the preparation of 1,2,4-oxadiazoles.
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Affiliation(s)
- Chan Jiang
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Mingfang Li
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Leitao Xu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Yangjie Yi
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Jiao Ye
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Aixi Hu
- College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
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8
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Zhang Y, Wu C, Wan X, Wang C. Direct synthesis of 3,5‐diaryl‐1,2,
4‐oxadiazoles
using 1‐(2‐oxo‐2‐arylethyl)pyridin‐1‐iums with benzamidines. J Heterocycl Chem 2021. [DOI: 10.1002/jhet.4354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Yue Zhang
- School of Chemistry and Chemical Engineering Yangzhou University Yangzhou China
| | - Chengjun Wu
- School of Chemistry and Chemical Engineering Yangzhou University Yangzhou China
| | - Xinyi Wan
- School of Chemistry and Chemical Engineering Yangzhou University Yangzhou China
| | - Cunde Wang
- School of Chemistry and Chemical Engineering Yangzhou University Yangzhou China
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9
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Liu HL, Li XT, Tian HZ, Sun XW. Unexpected Insertion of Nitrogen into a C-C Bond: Access to 2,3-Disubstituted Quinazolinone Scaffolds. Org Lett 2021; 23:4579-4583. [PMID: 34061550 DOI: 10.1021/acs.orglett.1c01235] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
A novel, practical, highly efficient, and transition metal free nitrogen insertion reaction for the synthesis of 2,3-disubstituted quinazolinone derivatives was developed. Diverse functionalized 3-indolinone-2-carboxylates and nitrosoarenes with a wide range of substituted nitrosobenzenes, nitrosopyridines, dibenzofuranyl, or dibenzothienyl nitroso compounds worked smoothly to give 2,3-disubstituted quinazolinone derivatives in good to excellent yields (69-98%). A gram-scale reaction was achieved, and an afloqualone analogue was synthesized under the mild reaction conditions.
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Affiliation(s)
- Hui-Li Liu
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Xiao-Tong Li
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Heng-Zhi Tian
- Department of Chemistry, Fudan University, Shanghai 200433, China
| | - Xing-Wen Sun
- Department of Chemistry, Fudan University, Shanghai 200433, China
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10
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Wang C, Rui X, Si D, Dai R, Zhu Y, Wen H, Li W, Liu J. Copper‐Catalyzed Three‐Component Cascade Reaction of Benzaldehyde with Benzylamine and Hydroxylamine or Aniline: Synthesis of 1,2,4‐Oxadiazoles and Quinazolines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001535] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Chao Wang
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 People's Republic of China
| | - Xiyan Rui
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 People's Republic of China
| | - Dongjuan Si
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 People's Republic of China
| | - Rupeng Dai
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 People's Republic of China
| | - Yueyue Zhu
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 People's Republic of China
| | - Hongmei Wen
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 People's Republic of China
| | - Wei Li
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 People's Republic of China
| | - Jian Liu
- School of Pharmacy Nanjing University of Chinese Medicine Nanjing 210023 People's Republic of China
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12
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Krylov IB, Paveliev SA, Budnikov AS, Terent’ev AO. Oxime radicals: generation, properties and application in organic synthesis. Beilstein J Org Chem 2020; 16:1234-1276. [PMID: 32550935 PMCID: PMC7277713 DOI: 10.3762/bjoc.16.107] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2020] [Accepted: 05/15/2020] [Indexed: 12/16/2022] Open
Abstract
N-Oxyl radicals (compounds with an N-O• fragment) represent one of the richest families of stable and persistent organic radicals with applications ranging from catalysis of selective oxidation processes and mechanistic studies to production of polymers, energy storage, magnetic materials design and spectroscopic studies of biological objects. Compared to other N-oxyl radicals, oxime radicals (or iminoxyl radicals) have been underestimated for a long time as useful intermediates for organic synthesis, despite the fact that their precursors, oximes, are extremely widespread and easily available organic compounds. Furthermore, oxime radicals are structurally exceptional. In these radicals, the N-O• fragment is connected to an organic moiety by a double bond, whereas all other classes of N-oxyl radicals contain an R2N-O• fragment with two single C-N bonds. Although oxime radicals have been known since 1964, their broad synthetic potential was not recognized until the last decade, when numerous selective reactions of oxidative cyclization, functionalization, and coupling mediated by iminoxyl radicals were discovered. This review is focused on the synthetic methods based on iminoxyl radicals developed in the last ten years and also contains some selected data on previous works regarding generation, structure, stability, and spectral properties of these N-oxyl radicals. The reactions of oxime radicals are classified into intermolecular (oxidation by oxime radicals, oxidative C-O coupling) and intramolecular. The majority of works are devoted to intramolecular reactions of oxime radicals. These reactions are classified into cyclizations involving C-H bond cleavage and cyclizations involving a double C=C bond cleavage.
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Affiliation(s)
- Igor B Krylov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Stanislav A Paveliev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Alexander S Budnikov
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
| | - Alexander O Terent’ev
- N. D. Zelinsky Institute of Organic Chemistry, Russian Academy of Sciences, Leninsky Prospect 47, Moscow, 119991, Russia
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13
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Wang H, Lian P, Zheng Y, Li J, Wan X. Cross coupling of sulfonyl radicals with silver-based carbenes: a simple approach to β-carbonyl arylsulfones. Org Biomol Chem 2020; 18:2163-2169. [DOI: 10.1039/d0ob00091d] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
A radical–carbene coupling reaction of sulfonyl radicals and silver-based carbenes has been well established, which provides an efficient approach to various β-carbonyl arylsulfones.
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Affiliation(s)
- Hanghang Wang
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Pengcheng Lian
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Yonggao Zheng
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Jingjing Li
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
| | - Xiaobing Wan
- Key Laboratory of Organic Synthesis of Jiangsu Province
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
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14
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Vinaya K, Chandrashekara GK, Shivaramu PD. One-pot synthesis of 3,5-diaryl substituted-1,2,4-oxadiazoles using gem-dibromomethylarenes. CAN J CHEM 2019. [DOI: 10.1139/cjc-2018-0333] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
1,2,4-Oxadiazole is one of the most promising heterocyclic ring systems in medicinal chemistry. In the present paper, we report the method for an efficient one-pot synthesis of 3,5-diaryl substituted 1,2,4-oxadiazoles using a two-component reaction of gem-dibromomethylarenes with amidoximes in good yields. In this method, gem-dibromomethylarenes are used as benzoic acid equivalents for the efficient synthesis of aryl-substituted 1,2,4-oxadiazoles. It is anticipated that this methodology will have versatile applications in the practical syntheses of various molecules of both medicinal and material chemistry importance.
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Affiliation(s)
- Kambappa Vinaya
- Department of Chemistry, Government First Grade College, Kadur — 577548, India
| | | | - Prasanna D. Shivaramu
- Department of Nanotechnology, Visvesvaraya Technological University, Bengaluru Region, Muddenahalli, Chikkaballapur — 562101, India
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15
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Iqbal M, Lu L, Mehmood H, Khan DM, Hua R. Quinazolinone Synthesis through Base-Promoted S NAr Reaction of ortho-Fluorobenzamides with Amides Followed by Cyclization. ACS OMEGA 2019; 4:8207-8213. [PMID: 31459909 PMCID: PMC6647956 DOI: 10.1021/acsomega.9b00699] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/13/2019] [Accepted: 04/25/2019] [Indexed: 05/24/2023]
Abstract
A transition-metal-free synthesis of quinazolin-4-ones by Cs2CO3-promoted SNAr reaction of ortho-fluorobenzamides with amides followed by cyclization in dimethyl sulfoxide has been developed. The present procedure can provide efficient synthetic methods for the formation of both 2-substituted and 2,3-disubstituted quinazolin-4-one rings depending on the use of easily available starting materials and an efficient, one-pot protocol for the synthesis of the marketed drug product of methaqualone.
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Affiliation(s)
- Muhammad
Asif Iqbal
- Department of Chemistry, Key Laboratory
of Organic Optoelectronics & Molecular Engineering of Ministry
of Education, Tsinghua University, Beijing 100084, China
| | - Le Lu
- Department of Chemistry, Key Laboratory
of Organic Optoelectronics & Molecular Engineering of Ministry
of Education, Tsinghua University, Beijing 100084, China
| | - Hina Mehmood
- Department of Chemistry, Key Laboratory
of Organic Optoelectronics & Molecular Engineering of Ministry
of Education, Tsinghua University, Beijing 100084, China
| | - Dost Muhammad Khan
- Department of Chemistry, Key Laboratory
of Organic Optoelectronics & Molecular Engineering of Ministry
of Education, Tsinghua University, Beijing 100084, China
| | - Ruimao Hua
- Department of Chemistry, Key Laboratory
of Organic Optoelectronics & Molecular Engineering of Ministry
of Education, Tsinghua University, Beijing 100084, China
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16
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Karmakar U, Samanta R. Pd(II)-Catalyzed Direct Sulfonylation of Benzylamines Using Sodium Sulfinates. J Org Chem 2019; 84:2850-2861. [DOI: 10.1021/acs.joc.8b03098] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Ujjwal Karmakar
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
| | - Rajarshi Samanta
- Department of Chemistry, Indian Institute of Technology Kharagpur, Kharagpur 721302, India
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17
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NBS-mediated practical cyclization of N-acyl amidines to 1,2,4-oxadiazoles via oxidative N‒O bond formation. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.07.036] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
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18
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Boghi M, Hall DG. Valdecoxib vs. borazavaldecoxib: isoxazole BN/CC isosterism as a case study in designing and stabilizing boron heterocycles. Org Biomol Chem 2018; 16:4849-4856. [PMID: 29926876 DOI: 10.1039/c8ob00998h] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A comprehensive study on the preparation, hydrolytic stability, and the structural and spectrophotometric properties of 1,2,4,5-oxadiazaboroles is presented by way of a comparison between the NSAID drug valdecoxib (1) and its unprecedented B-N isostere, borazavaldecoxib (2). Knowledge gained from this study was employed in the design of oxadiazaborate salts, a novel class of tetrahedral boron heterocycles displaying good stability in aqueous conditions with promising antifungal and antibacterial properties.
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Affiliation(s)
- Michele Boghi
- Department of Chemistry, 4-010 Centennial Centre for Interdisciplinary Science, University of Alberta, Edmonton, Alberta, CanadaT6G 2G2.
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19
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Soni VK, Kim J, Cho EJ. Organocatalytic Oxidative Cyclization of Amidoximes for the Synthesis of 1,2,4‐Oxadiazolines. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800238] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Vineet Kumar Soni
- Department of ChemistryChung-Ang University 84 Heukseok-ro, Dongjak-gu Seoul 06974 Republic of Korea
| | - Jun Kim
- Department of ChemistryChung-Ang University 84 Heukseok-ro, Dongjak-gu Seoul 06974 Republic of Korea
| | - Eun Jin Cho
- Department of ChemistryChung-Ang University 84 Heukseok-ro, Dongjak-gu Seoul 06974 Republic of Korea
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20
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Huang HM, Adams RW, Procter DJ. Reductive cyclisations of amidines involving aminal radicals. Chem Commun (Camb) 2018; 54:10160-10163. [DOI: 10.1039/c8cc05178j] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
The first general study of aminal radical cyclisations, triggered by reduction of amidines with SmI2, delivers quinazolinones with complete diastereocontrol.
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Affiliation(s)
- Huan-Ming Huang
- School of Chemistry
- Oxford Road
- University of Manchester
- Manchester
- UK
| | - Ralph W. Adams
- School of Chemistry
- Oxford Road
- University of Manchester
- Manchester
- UK
| | - David J. Procter
- School of Chemistry
- Oxford Road
- University of Manchester
- Manchester
- UK
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21
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Xu Y, Chen H, Li W, Xie Q, Yu L, Shao L. Synthetic access to isoxazoline-functionalized isoquinolines via microwave-assisted iminoxyl radical-participated cascade cyclization of vinyl isocyanides. Org Biomol Chem 2018; 16:4996-5005. [DOI: 10.1039/c8ob01229f] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The synthesis of isoxazoline-functionalized isoquinolines via radical cascade cyclization of vinyl isocyanides with β,γ-unsaturated ketoximes has been described.
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Affiliation(s)
- Yulong Xu
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Hao Chen
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Wei Li
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Qiong Xie
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Linqian Yu
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
| | - Liming Shao
- School of Pharmacy
- Fudan University
- Shanghai 201203
- China
- State Key Laboratory of Medical Neurobiology
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22
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Phakhodee W, Duangkamol C, Wiriya N, Pattarawarapan M. A convenient one-pot synthesis of N-substituted amidoximes and their application toward 1,2,4-oxadiazol-5-ones. RSC Adv 2018; 8:38281-38288. [PMID: 35559089 PMCID: PMC9090163 DOI: 10.1039/c8ra08207c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2018] [Accepted: 11/01/2018] [Indexed: 11/25/2022] Open
Abstract
The first direct one-pot approach for the synthesis of N-substituted amidoximes from secondary amides or the intermediate amides has been developed. Through the Ph3P–I2-mediated dehydrative condensation, a variety of N-aryl and N-alkyl amidoximes (R1(C
Created by potrace 1.16, written by Peter Selinger 2001-2019
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NOH)NHR2, where R1 or R2 = aryl, alkyl, or benzyl) were readily afforded under mild conditions and short reaction times. The synthetic application of the obtained amidoximes has also been demonstrated through the formation of 1,2,4-oxadiazolones via base-mediated carbonylative cyclization with 1,1′-carbonyldiimidazole. Ph3P–I2 mediated one-pot synthesis of N-substituted amidoximes via imidoyl iodide was developed. The synthesis of 1,2,4-oxadiazol-5-ones was also demonstrated.![]()
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Affiliation(s)
- Wong Phakhodee
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Chuthamat Duangkamol
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Nitaya Wiriya
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
| | - Mookda Pattarawarapan
- Department of Chemistry
- Faculty of Science
- Chiang Mai University
- Chiang Mai 50200
- Thailand
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23
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Lade JJ, Patil BN, Vadagaonkar KS, Chaskar AC. Oxidative cyclization of amidoximes and thiohydroximic acids: A facile and efficient strategy for accessing 3,5-disubstituted 1,2,4-oxadiazoles and 1,4,2-oxathiazoles. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.04.045] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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24
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Baykov S, Sharonova T, Shetnev A, Rozhkov S, Kalinin S, Smirnov AV. The first one-pot ambient-temperature synthesis of 1,2,4-oxadiazoles from amidoximes and carboxylic acid esters. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.01.007] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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25
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Asad M, Gupta PK, Jaiswal SK, Hajela K. Iodine-induced Oxidative Cyclisation ofN-Acyl Amidines: A Rapid Synthesis of 3,5-Disubstituted-1,2,4-Oxadiazoles. ChemistrySelect 2016. [DOI: 10.1002/slct.201601194] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Mohammad Asad
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute B.S.10/1, Sector-10, Jankipuram Extension; Lucknow 226 031 India
| | - Puneet K Gupta
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute B.S.10/1, Sector-10, Jankipuram Extension; Lucknow 226 031 India
| | - Subodh K Jaiswal
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute B.S.10/1, Sector-10, Jankipuram Extension; Lucknow 226 031 India
| | - Kanchan Hajela
- Medicinal and Process Chemistry Division; CSIR-Central Drug Research Institute B.S.10/1, Sector-10, Jankipuram Extension; Lucknow 226 031 India
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26
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Mechanistic insights into a catalyst-free method to construct quinazolinones through multiple oxidative cyclization. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.01.027] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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27
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Yang XL, Long Y, Chen F, Han B. Synthesis of isoxazoline-featured oxindoles by iminoxyl radical-promoted cascade oxyalkylation/alkylarylation of alkenes. Org Chem Front 2016. [DOI: 10.1039/c5qo00352k] [Citation(s) in RCA: 29] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Isoxazoline-featured oxindoles were synthesized by the reaction of β,γ-unsaturated ketoximes with N-arylacrylamides via iminoxyl radical-promoted cascade intra/intermolecular oxyalkylation/alkylarylation of alkenes.
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Affiliation(s)
- Xiu-Long Yang
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Yan Long
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Fei Chen
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
| | - Bing Han
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou
- P. R. China
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28
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Lu K, Duan L, Xu B, Yin W, Wu D, Zhao Y, Gong P. Facile synthesis of 3-amino-5-aryl-1,2,4-oxadiazoles via PIDA-mediated intramolecular oxidative cyclization. RSC Adv 2016. [DOI: 10.1039/c6ra08871f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Advantages: ambient condition and simple procedure. Additive and metal free method. Up to 25 examples and 79% yield. Wide functional groups tolerance.
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Affiliation(s)
- Kuan Lu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- PR China
| | - Liancheng Duan
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- PR China
| | - Boxuan Xu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- PR China
| | - Weile Yin
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- PR China
| | - Di Wu
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- PR China
| | - Yanfang Zhao
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- PR China
| | - Ping Gong
- Key Laboratory of Structure-Based Drug Design and Discovery (Shenyang Pharmaceutical University)
- Ministry of Education
- Shenyang 110016
- PR China
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29
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Kuram MR, Kim WG, Myung K, Hong SY. Copper-Catalyzed Direct Synthesis of 1,2,4-Oxadiazoles from Amides and Organic Nitriles by Oxidative N-O Bond Formation. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501502] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
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30
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Lemercier BC, Pierce JG. Synthesis of 1,4,2-Oxathiazoles via Oxidative Cyclization of Thiohydroximic Acids. Org Lett 2015; 17:4542-5. [DOI: 10.1021/acs.orglett.5b02256] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bérénice C. Lemercier
- Department
of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
| | - Joshua G. Pierce
- Department
of Chemistry, North Carolina State University, Raleigh, North Carolina 27695, United States
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31
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Guo W, Huang K, Ji F, Wu W, Jiang H. A facile approach to synthesize 3,5-disubstituted-1,2,4-oxadiazoles via copper-catalyzed-cascade annulation of amidines and methylarenes. Chem Commun (Camb) 2015; 51:8857-60. [DOI: 10.1039/c5cc02110c] [Citation(s) in RCA: 35] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A tandem Cu-catalyzed oxidation–amination–cyclization reaction for synthesizing various 3,5-disubstituted-1,2,4-oxadiazoles from easily available amidines and methylarenes or methylhetarenes is reported.
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Affiliation(s)
- Wei Guo
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
- Key Laboratory of Organo-pharmaceutical Chemistry of Jiangxi Province
| | - Kunbo Huang
- School of Chemistry and Chemical Engineering
- South China University of Technology
- Guangzhou 510640
- China
| | - Fanghua Ji
- 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
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32
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Yang XL, Chen F, Zhou NN, Yu W, Han B. Synthesis of Isoxazoline-Functionalized Phenanthridines via Iminoxyl Radical-Participated Cascade Sequence. Org Lett 2014; 16:6476-9. [DOI: 10.1021/ol503335k] [Citation(s) in RCA: 80] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Xiu-Long Yang
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
| | - Fei Chen
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
| | - Neng-Neng Zhou
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
| | - Wei Yu
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
| | - Bing Han
- State Key Laboratory
of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000 P. R. China
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33
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Peng XX, Deng YJ, Yang XL, Zhang L, Yu W, Han B. Iminoxyl Radical-Promoted Dichotomous Cyclizations: Efficient Oxyoximation and Aminooximation of Alkenes. Org Lett 2014; 16:4650-3. [DOI: 10.1021/ol502258n] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Xie-Xue Peng
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Yun-Jing Deng
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Xiu-Long Yang
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Lin Zhang
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Wei Yu
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
| | - Bing Han
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, 730000, P. R. China
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34
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Khan I, Ibrar A, Abbas N, Saeed A. Recent advances in the structural library of functionalized quinazoline and quinazolinone scaffolds: Synthetic approaches and multifarious applications. Eur J Med Chem 2014; 76:193-244. [DOI: 10.1016/j.ejmech.2014.02.005] [Citation(s) in RCA: 264] [Impact Index Per Article: 26.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2013] [Revised: 02/04/2014] [Accepted: 02/06/2014] [Indexed: 01/14/2023]
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35
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Chiba S, Chen H. sp3 C–H oxidation by remote H-radical shift with oxygen- and nitrogen-radicals: a recent update. Org Biomol Chem 2014; 12:4051-60. [DOI: 10.1039/c4ob00469h] [Citation(s) in RCA: 202] [Impact Index Per Article: 20.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
This review updates on recent advances in aliphatic sp3 C–H bond oxidation by remote H-radical abstraction with oxygen- and nitrogen-radicals classifying by the type of the radical precursors.
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Affiliation(s)
- Shunsuke Chiba
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371, Singapore
| | - Hui Chen
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371, Singapore
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36
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Abstract
The new routes and strategies for the synthesis of valuable 4(3H)-quinazolinones have been summarized.
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Affiliation(s)
- Lin He
- Leibniz-Institut für Katalyse e.V
- 18059 Rostock, Germany
| | - Haoquan Li
- Leibniz-Institut für Katalyse e.V
- 18059 Rostock, Germany
| | - Jianbin Chen
- Leibniz-Institut für Katalyse e.V
- 18059 Rostock, Germany
| | - Xiao-Feng Wu
- Leibniz-Institut für Katalyse e.V
- 18059 Rostock, Germany
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37
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Abstract
TEMPO-mediated reactions of alkenyl hydrazones afforded azaheterocycles via sp3 C–H allylic amination. The transformation is featured by a sequence of remote allylic H-radical shift and allylic homolytic substitution with hydrazone radicals.
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Affiliation(s)
- Xu Zhu
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371, Singapore
| | - Shunsuke Chiba
- Division of Chemistry and Biological Chemistry
- School of Physical and Mathematical Sciences
- Nanyang Technological University
- Singapore 637371, Singapore
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