1
|
Wu H, Wang J, Sun H, Jing H, Teng Z, Ou W, Zhang Z, Xu Y, Liu B, Su C. Heterogeneous photocatalytic methanol oxidation coupled with oxygen reduction toward pyrimidines synthesis. Sci Bull (Beijing) 2024:S2095-9273(24)00402-X. [PMID: 38942697 DOI: 10.1016/j.scib.2024.06.006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2024] [Revised: 05/25/2024] [Accepted: 06/05/2024] [Indexed: 06/30/2024]
Affiliation(s)
- Hongru Wu
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Jie Wang
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Hongli Sun
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Haochuan Jing
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Zhenyuan Teng
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China; Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon 999007, China
| | - Wei Ou
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Zhaofei Zhang
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Yangsen Xu
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China
| | - Bin Liu
- Department of Materials Science and Engineering, City University of Hong Kong, Tat Chee Avenue, Kowloon 999007, China
| | - Chenliang Su
- Institute of Microscale Optoelectronics, Shenzhen University, Shenzhen 518060, China.
| |
Collapse
|
2
|
Kumar N, Sharma N, Kumar V, Kumar V, Jangid K, Devi B, Dwivedi AR, Giri K, Kumar R, Kumar V. Iodine-PEG as a unique combination for the metal-free synthesis of flavonoids through iodonium-triiodide ion-pair complexation. RSC Adv 2024; 14:6225-6233. [PMID: 38375003 PMCID: PMC10875328 DOI: 10.1039/d3ra08810c] [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: 12/24/2023] [Accepted: 02/08/2024] [Indexed: 02/21/2024] Open
Abstract
An efficient metal-free single-step protocol has been developed for the direct synthesis of flavones from 2-hydroxyacetophenone and substituted benzaldehydes. This chemical transformation is exclusively promoted by the iodonium-triiodide ion couple formed through iodine and PEG-400 complexation. The triiodide anion not only helps in the abstraction of a proton from the acetophenone but also promotes the cyclization of intermediate chalcone to the corresponding flavones. The flavones were obtained in very high yields without using any toxic metal catalysts or harsh reaction conditions. The reaction mechanism was established through a series of test reactions and entrapping of reaction intermediates. The developed protocol provides direct access to flavones in high yields under milder reaction conditions with great substrate compatibility, including hydroxylated derivatives.
Collapse
Affiliation(s)
- Naveen Kumar
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Central University of Punjab Bathinda Punjab India-151401 +911642864214
| | - Navneet Sharma
- Department of Computational Sciences, Central University of Punjab Bathinda Punjab India-151401
| | - Vijay Kumar
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Central University of Punjab Bathinda Punjab India-151401 +911642864214
| | - Vinay Kumar
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Central University of Punjab Bathinda Punjab India-151401 +911642864214
| | - Kailash Jangid
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Central University of Punjab Bathinda Punjab India-151401 +911642864214
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab Bathinda Punjab India-151401
| | - Bharti Devi
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Central University of Punjab Bathinda Punjab India-151401 +911642864214
| | - Ashish Ranjan Dwivedi
- Department of Pharmaceutical Sciences and Natural Products, Central University of Punjab Bathinda Punjab India-151401
- Gitam School of Pharmacy Hyderabad Telangana 502329 India
| | - Kousik Giri
- Department of Computational Sciences, Central University of Punjab Bathinda Punjab India-151401
| | - Rakesh Kumar
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Central University of Punjab Bathinda Punjab India-151401 +911642864214
| | - Vinod Kumar
- Laboratory of Organic and Medicinal Chemistry, Department of Chemistry, Central University of Punjab Bathinda Punjab India-151401 +911642864214
| |
Collapse
|
3
|
Long L, Wang W, Zhu Y, Luo W, Zhang Y, Chen J, Wei Y, Chen Z. Benzannulation with Et 3N as 1,3-Diene Variants. Org Lett 2023; 25:7775-7779. [PMID: 37874959 DOI: 10.1021/acs.orglett.3c02620] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2023]
Abstract
With triethylamine as a 1,3-diene variant, a simple and practical process for the synthesis of phthalimides has been developed from readily available maleimide. The transformation can be performed in the absence of a metal catalyst with high levels of functional group tolerance. Various phthalimide compounds were constructed in moderate to good yields under mild conditions. Mechanism research indicates that oxygen and acid also play crucial roles in this reaction.
Collapse
Affiliation(s)
- Lipeng Long
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, PR China
| | - Wenjia Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, PR China
| | - Yuping Zhu
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, PR China
| | - Wenjun Luo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, PR China
| | - Yi Zhang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, PR China
| | - Juxiu Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, PR China
| | - Yuting Wei
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, PR China
| | - Zhengwang Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province, Gannan Normal University, Ganzhou 341000, PR China
| |
Collapse
|
4
|
Fang F, Xia J, Quan S, Chen S, Deng GJ. Metal- and Solvent-Free Synthesis of Substituted Pyrimidines via an NH 4I-Promoted Three-Component Tandem Reaction. J Org Chem 2023; 88:14697-14707. [PMID: 37773063 DOI: 10.1021/acs.joc.3c01700] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/30/2023]
Abstract
A facile and practical approach for the preparation of substituted pyrimidines from ketones, NH4OAc, and N,N-dimethylformamide dimethyl acetal has been described. This NH4I-promoted three-component tandem reaction affords a broad range of substituted pyrimidines in acceptable yields under metal- and solvent-free conditions. The present methodology features the advantages of simple and easily available starting materials, metal- and solvent-free conditions, a broad substrate scope with good functional group tolerance, and gram-scale synthesis.
Collapse
Affiliation(s)
- Fang Fang
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education Hunan Province, Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
- College of Materials and Chemical Engineering, Hunan City University, Yiyang 413000, P. R. China
| | - Jie Xia
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education Hunan Province, Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
| | - Siying Quan
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education Hunan Province, Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
| | - Shanping Chen
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education Hunan Province, Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education Hunan Province, Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, P. R. China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, P. R. China
| |
Collapse
|
5
|
Danagulyan GG, Panosyan HA, Gharibyan VK, Hasratyan AH. A Simple and Easily Implemented Method for the Regioselective Introduction of Deuterium into Azolo[1,5- a]pyrimidines Molecules. Molecules 2023; 28:molecules28062869. [PMID: 36985841 PMCID: PMC10054722 DOI: 10.3390/molecules28062869] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/09/2023] [Revised: 03/16/2023] [Accepted: 03/17/2023] [Indexed: 03/30/2023] Open
Abstract
A method for the technically easy-to-implement synthesis of deuterium-labeled pyrazolo[1,5-a]pyrimidines and 1,2,4-triazolo[1,5-a]pyrimidines have been developed. The regioselectivity of such transformations has been shown. 1H NMR and mass spectrometric methods have proved the quantitative nature of such transformations and the kinetics of deuterium exchange has been studied. Spectrally, at different temperatures (+30 °C, -10 °C and -15 °C), the kinetics of the process was studied both in CD3OD and in deuterated alkali.
Collapse
Affiliation(s)
- Gevorg G Danagulyan
- Laboratory of Bioactive Azaheterocycles, Institute of Biomedicine and Pharmacy, Russian-Armenian University, Hovsep Emin Str. 123, Yerevan 0051, Armenia
- Scientific and Technological Center of Organic and Pharmaceutical Chemistry, The National Academy of Sciences of the Republic of Armenia, Azatutyan Ave. 26, Yerevan 0014, Armenia
| | - Henrik A Panosyan
- Scientific and Technological Center of Organic and Pharmaceutical Chemistry, The National Academy of Sciences of the Republic of Armenia, Azatutyan Ave. 26, Yerevan 0014, Armenia
| | - Vache K Gharibyan
- Laboratory of Bioactive Azaheterocycles, Institute of Biomedicine and Pharmacy, Russian-Armenian University, Hovsep Emin Str. 123, Yerevan 0051, Armenia
| | - Ani H Hasratyan
- Laboratory of Bioactive Azaheterocycles, Institute of Biomedicine and Pharmacy, Russian-Armenian University, Hovsep Emin Str. 123, Yerevan 0051, Armenia
- Scientific and Technological Center of Organic and Pharmaceutical Chemistry, The National Academy of Sciences of the Republic of Armenia, Azatutyan Ave. 26, Yerevan 0014, Armenia
| |
Collapse
|
6
|
Ma Y, Zhou C, Xiao F, Mao G, Deng GJ. Three-Component Synthesis of 2-Substituted Quinolines and Benzo[ f]quinolines Using Tertiary Amines as the Vinyl Source. J Org Chem 2023. [PMID: 36802566 DOI: 10.1021/acs.joc.2c02677] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/22/2023]
Abstract
A metal-free method for the construction of 2-substituted quinolines and benzo[f]quinolines from aromatic amines, aldehydes, and tertiary amines has been demonstrated. Cheap and readily available tertiary amines acted as the vinyl source. A new pyridine ring was selectively formed via [4 + 2] condensation that was promoted by ammonium salt under neutral conditions and an oxygen atmosphere. This strategy provided a new route for the preparation of various quinoline derivatives with different substituents at the pyridine ring, which provides the possibility of further modification.
Collapse
Affiliation(s)
- Yanfeng Ma
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Chunlan Zhou
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Fuhong Xiao
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| | - Guojiang Mao
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
| | - Guo-Jun Deng
- Key Laboratory of Environmentally Friendly Chemistry and Application of Ministry of Education, Hunan Province Key Laboratory of Green Organic Synthesis and Application, College of Chemistry, Xiangtan University, Xiangtan 411105, China
| |
Collapse
|
7
|
Gao Q, Guo Y, Sun Z, He X, Gao Y, Fan G, Cao P, Fang L, Bai S, Jia Y. Deaminative Cyclization of Tertiary Amines for the Synthesis of 2-Arylquinoline Derivatives with a Nonsubstituted Vinylene Fragment. Org Lett 2023; 25:109-114. [PMID: 36484535 DOI: 10.1021/acs.orglett.2c03904] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
With triethylamine as a vinylene source, a convenient protocol for the regioselective synthesis of β,γ-nonsubstituted 2-arylquinolines from aldehydes and arylamines has been accomplished. The deaminative cyclization is also extended to long-chain tertiary alkylamines, enabling diverse alkyl groups to be concurrently installed into the pyridine rings. This process demonstrates a new conversion pathway for the simultaneous dual C(sp3)-H bond functionalization of tertiary amines, wherein the transient acyclic enamines generated in situ undergo the Povarov reaction.
Collapse
Affiliation(s)
- Qinghe Gao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Yimei Guo
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Zhenhua Sun
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Xiaodan He
- The Second Affiliated Hospital of Xinxiang Medical University, Xinxiang, Henan 453002, P.R. China
| | - Yiqiao Gao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Guangping Fan
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Penghui Cao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Lizhen Fang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Suping Bai
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| | - Yanlong Jia
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P.R. China
| |
Collapse
|
8
|
Anjirwala SN, Parmar PS, Patel SK. Synthetic protocols for non-fused pyrimidines. SYNTHETIC COMMUN 2022. [DOI: 10.1080/00397911.2022.2137682] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/31/2022]
Affiliation(s)
| | - Parnas S. Parmar
- Department of Chemistry, Veer Narmad South Gujarat University, Surat, India
| | - Saurabh K. Patel
- Department of Chemistry, Veer Narmad South Gujarat University, Surat, India
| |
Collapse
|
9
|
Wu W, Wu X, Fan S, Zhu J. Rh(III)-Catalyzed Enaminone-Directed C-H Coupling with Diazodicarbonyls for Skeleton-Divergent Synthesis of Isocoumarins and Naphthalenes. Org Lett 2022; 24:7850-7855. [PMID: 36260610 DOI: 10.1021/acs.orglett.2c03288] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Diversity-oriented synthesis is tremendously useful for expanding the explorable chemical space but restricted by the limited available toolbox of skeleton-diversification chemistry. We report herein Rh(III)-catalyzed coupling of enaminones and diazodicarbonyls for skeleton-divergent synthesis of isocoumarins and naphthalenes. The diazodicarbonyl ring size and pH dependence of the skeleton-forming process demonstrates the achievement of both substrate- and reagent-controlled skeletal diversity generation in a single type of system. An intriguing C-C bond cleavage reactivity is critical for enabling facile synthetic access to isocoumarins.
Collapse
Affiliation(s)
- Weiping Wu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
| | - Xuan Wu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
| | - Shuaixin Fan
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
| | - Jin Zhu
- Department of Polymer Science and Engineering, School of Chemistry and Chemical Engineering, State Key Laboratory of Coordination Chemistry, Nanjing University, Nanjing 210023, China
| |
Collapse
|
10
|
Snizhko AD, Kyrychenko AV, Gladkov ES. Synthesis of Novel Derivatives of 5,6,7,8-Tetrahydroquinazolines Using α-Aminoamidines and In Silico Screening of Their Biological Activity. Int J Mol Sci 2022; 23:ijms23073781. [PMID: 35409144 PMCID: PMC8999073 DOI: 10.3390/ijms23073781] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2021] [Revised: 12/15/2021] [Accepted: 12/17/2021] [Indexed: 02/05/2023] Open
Abstract
α-Aminoamidines are promising reagents for the synthesis of a diverse family of pyrimidine ring derivatives. Here, we demonstrate the use of α-aminoamidines for the synthesis of a new series of 5,6,7,8-tetrahydroquinazolines by their reaction with bis-benzylidene cyclohexanones. The reaction occurs in mild conditions and is characterized by excellent yields. It has easy workup, as compared to the existing methods of tetrahydroquinazoline preparation. Newly synthesized derivatives of 5,6,7,8-tetrahydroquinazoline bear protecting groups at the C2-tert-butyl moiety of a quinazoline ring, which can be easily cleaved, opening up further opportunities for their functionalization. Moreover, molecular docking studies indicate that the synthesized compounds reveal high binding affinity toward some essential enzymes of Mycobacterial tuberculosis, such as dihydrofolate reductase (DHFR), pantothenate kinase (MtPanK), and FAD-containing oxidoreductase DprE1 (MtDprE1), so that they may be promising candidates for the molecular design and the development of new antitubercular agents against multidrug-resistant strains of the Tubercle bacillus. Finally, the high inhibition activity of the synthesized compounds was also predicted against β-glucosidase, suggesting a novel tetrahydroquinazoline scaffold for the treatment of diabetes.
Collapse
Affiliation(s)
- Arsenii D. Snizhko
- Institute of Chemistry and School of Chemistry, V. N. Karazin Kharkiv National University, 4 Svobody Sq., 61022 Kharkiv, Ukraine; (A.D.S.); (A.V.K.)
| | - Alexander V. Kyrychenko
- Institute of Chemistry and School of Chemistry, V. N. Karazin Kharkiv National University, 4 Svobody Sq., 61022 Kharkiv, Ukraine; (A.D.S.); (A.V.K.)
| | - Eugene S. Gladkov
- Institute of Chemistry and School of Chemistry, V. N. Karazin Kharkiv National University, 4 Svobody Sq., 61022 Kharkiv, Ukraine; (A.D.S.); (A.V.K.)
- State Scientific Institution “Institute for Single Crystals”, National Academy of Sciences of Ukraine, 60 Nauky Ave, 61072 Kharkiv, Ukraine
- Correspondence:
| |
Collapse
|
11
|
Wang Y, Yan L, Zhang X, Xiang F, Li X, Li S, Song X. Tandem [3 + 1 + 1 + 1] Heterocyclization of α‐Acyl Ketene Dithioacetals with Ammonia and Methanol: Rapid Assembly of Polysubstituted Pyrimidines. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200237] [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]
Affiliation(s)
- Youkun Wang
- Hebei University of Technology School of Chemical Engineering and Technology 300401 Tianjin CHINA
| | - Linlin Yan
- Hebei Chemical and Pharmaceutical College Department of Pharmaceutical Engineering 88 Fangxing Road 050026 Shijiazhuang CHINA
| | - Xiaoxuan Zhang
- Hebei University of Technology School of Chemical Engineering and Technology 300401 Tianjin CHINA
| | - Fengrui Xiang
- Hebei University of Technology School of Chemical Engineering and Technology 300401 Tianjin CHINA
| | - Xiaojun Li
- Hebei University of Technology School of Chemical Engineering and Technology 300401 Tianjin CHINA
| | - Shengnan Li
- Hebei University of Technology School of Chemical Engineering and Technology 300401 Tianjin CHINA
| | - Xiaoning Song
- Hebei University of Technology School of Chemical Engineering and Technology 300401 Tianjin CHINA
| |
Collapse
|
12
|
Li J, Li J, He R, Liu J, Liu Y, Chen L, Huang Y, Li Y. Selective Synthesis of Substituted Pyridines and Pyrimidines through Cascade Annulation of Isopropene Derivatives. Org Lett 2022; 24:1620-1625. [PMID: 35194989 DOI: 10.1021/acs.orglett.2c00124] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Diverse substituted pyridines and pyrimidines with high selectivity were obtained using a concise and efficient protocol developed herein. The reaction proceeds via metal-free cascade annulation of isopropene derivatives. Using isopropene derivatives as C3 synthons, NH4I as the "N" source, and formaldehyde or dimethyl sulfoxide as the carbon source, this reaction realizes the efficient formation of intermolecular C-N and C-C bonds.
Collapse
Affiliation(s)
- Jian Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Jiaming Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Runfa He
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Jiasheng Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yang Liu
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Lu Chen
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yubing Huang
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| | - Yibiao Li
- School of Biotechnology and Health Sciences, Wuyi University, Jiangmen, Guangdong Province 529090, China
| |
Collapse
|
13
|
Chan CK, Chung YH, Wang CC. Acid-controlled multicomponent selective synthesis of 2,4,6-triaryl pyridines and pyrimidines by using hexamethyldisilazane as a nitrogen source under microwave irradiation. RSC Adv 2022; 12:27281-27291. [PMID: 36276015 PMCID: PMC9513438 DOI: 10.1039/d2ra04739j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/29/2022] [Accepted: 09/20/2022] [Indexed: 12/02/2022] Open
Abstract
An efficient and general protocol for the synthesis of functionalized 2,4,6-triaryl pyridines and pyrimidines was developed from commercially available aromatic ketones, aldehydes and hexamethyldisilazane (HMDS) as a nitrogen source under microwave irradiation. In this multicomponent synthetic route, Lewis acids play an important role in selectively synthesizing six-membered heterocycles, including pyridines (1N) and pyrimidines (2N), by involving [2 + 1 + 2 + 1] or [2 + 1 + 1 + 1 + 1] annulated processes. Synthesis of pyrimidines and pyridines from commercially available ketones and aldehydes by using hexamethyldisilazane as a nitrogen source and controlled by acids under microwave irradiation.![]()
Collapse
Affiliation(s)
- Chieh-Kai Chan
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | - Yi-Hsiu Chung
- Institute of Chemistry, Academia Sinica, Taipei 115, Taiwan
| | | |
Collapse
|
14
|
Geng X, Xu Z, Cai Y, Wang L. Visible-Light-Driven Multicomponent Cyclization by Trapping a 1,3-Vinylimine Ion Intermediate: A Direct Approach to Pyrimido[1,2- b]indazole Derivatives. Org Lett 2021; 23:8343-8347. [PMID: 34636565 DOI: 10.1021/acs.orglett.1c03076] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Here we develop a novel visible-light-driven three-component cyclization by trapping an 1,3-vinylimine ion intermediate for the direct synthesis of pyrimido[1,2-b]indazole derivatives from bromodifluoroacetic acid derivatives, enaminones, and 3-aminoindazoles under mild conditions. Notably, the robust methodology provides a valuable opportunity for the introduction of aliphatic substituents and enables good compatibility of complex bioactive molecules. Furthermore, this is the first example of photoinduced multicomponent reaction by employing bromodifluoroacetic acid derivatives as a C1-synthon.
Collapse
Affiliation(s)
- Xiao Geng
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
| | - Zhaoliang Xu
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
| | - Yiwen Cai
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China
| | - Lei Wang
- Advanced Research Institute and Department of Chemistry, Taizhou University, Taizhou, Zhejiang 318000, P. R. China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Shanghai 200032, P. R. China
| |
Collapse
|
15
|
Qin Z, Ma Y, Li F. Construction of a Pyrimidine Framework through [3 + 2 + 1] Annulation of Amidines, Ketones, and N, N-Dimethylaminoethanol as One Carbon Donor. J Org Chem 2021; 86:13734-13743. [PMID: 34541847 DOI: 10.1021/acs.joc.1c01847] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
An efficient, facile, and eco-friendly synthesis of pyrimidine derivatives has been developed. It involves a [3 + 2 + 1] three-component annulation of amidines, ketones, and one carbon source. N,N-Dimethylaminoethanol is oxidized through C(sp3)-H activation to provide the carbon donor. One C-C and two C-N bonds are formed during the oxidative annulation process. The reaction shows good tolerance to many important functional groups in air, making this methodology a highly versatile alternative, and significant improvement to the existing methods for structuring a pyrimidine framework, especially 4-aliphatic pyrimidines.
Collapse
Affiliation(s)
- Zemin Qin
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| | - Yongmin Ma
- Institute of Advanced Studies and School of Pharmaceutical and Chemical Engineering, Taizhou University, Taizhou 318000, P R China.,School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| | - Fanzhu Li
- School of Pharmaceutical Science, Zhejiang Chinese Medical University, Hangzhou 310053, P R China
| |
Collapse
|
16
|
Gao Q, Sun Z, Xia Q, Li R, Wang W, Ma S, Chai Y, Wu M, Hu W, Ábrányi-Balogh P, Keserű GM, Han X. Vinylation of α-Aminoazoles with Triethylamine: A General Strategy to Construct Azolo[1,5- a]pyrimidines with a Nonsubstituted Ethylidene Fragment. Org Lett 2021; 23:2664-2669. [PMID: 33733786 DOI: 10.1021/acs.orglett.1c00571] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A new general synthesis of pharmaceutically important azolo[1,5-a]pyrimidines starting from widely available 3(5)-aminoazoles, aldehydes, and triethylamine is developed. The key is to enable the vinylation reaction that allows the in situ generation of elusive acyclic enamines and the subsequent annulation reaction to occur. This direct and practical strategy is capable of constructing a range of 5,6-unsubstituted pyrazolo[1,5-a]pyrimidines and [1,2,4]triazolo[1,5-a]pyrimidines. More importantly, this protocol provides a concise synthetic route to prepare the clinically used zaleplon.
Collapse
Affiliation(s)
- Qinghe Gao
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Zhenhua Sun
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Qinfei Xia
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, P. R. China
| | - Ruonan Li
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Wenlong Wang
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Siwei Ma
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Yixin Chai
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Manman Wu
- School of Pharmacy, Xinxiang Medical University, Xinxiang, Henan 453003, P. R. China
| | - Wei Hu
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, P. R. China
| | - Péter Ábrányi-Balogh
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, Budapest 1117, Hungary
| | - György M Keserű
- Medicinal Chemistry Research Group, Research Centre for Natural Sciences, Magyar tudósok krt. 2, Budapest 1117, Hungary
| | - Xinya Han
- School of Chemistry and Chemical Engineering, Anhui University of Technology, Maanshan, Anhui 243002, P. R. China
| |
Collapse
|
17
|
Hu J, Yang X, Shi S, Cheng B, Luo X, Lan Y, Loh TP. Metal-free C(sp 3)-H functionalization of sulfonamides via strain-release rearrangement. Chem Sci 2021; 12:4034-4040. [PMID: 34163674 PMCID: PMC8179522 DOI: 10.1039/d0sc06603f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2020] [Accepted: 01/17/2021] [Indexed: 11/21/2022] Open
Abstract
With the increasing awareness of sustainable chemistry principles, the development of an efficient and mild strategy for C(sp3)-H bond activation of nitrogen-containing compounds without the utilization of any oxidant and metal is still highly desired and challenging. Herein, we present a metal-free reaction system that enables C-H bond functionalization of aliphatic sulfonamides using DABCO as a promoter under mild conditions, affording a series of α,β-unsaturated imines in good yields with high selectivities. This protocol tolerates a broad range of functionalities and can serve as a powerful synthetic tool for the late-stage modification of complex compounds. More importantly, control experiments and detailed DFT calculations suggest that this process involves [2 + 2] cyclization/ring-cleavage reorganization, which opens up a new platform for the establishment of other related reorganization reactions.
Collapse
Affiliation(s)
- Jiefeng Hu
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
| | - Xianyu Yang
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
| | - Shasha Shi
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
| | - Bo Cheng
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
| | - Xiaoling Luo
- Chongqing Key Laboratory of Inorganic Functional Materials, College of Chemistry, Chongqing Normal University Chongqing 401331 China
| | - Yu Lan
- College of Chemistry, Institute of Green Catalysis, Zhengzhou University Zhengzhou Henan 450001 China
| | - Teck-Peng Loh
- Institute of Advanced Synthesis, School of Chemistry and Molecular Engineering, Jiangsu National Synergetic Innovation Center for Advanced Materials, Nanjing Tech University Nanjing 211816 China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University Singapore 637371 Singapore
| |
Collapse
|