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Liang Z, Li J, Wang L, Wei Z, Huang J, Wang X, Du D. Construction of Functionalized 2 H-Pyran-2-ones via N-Heterocyclic Carbene-Catalyzed [3 + 3] Annulation of Alkynyl Esters with Enolizable Ketones. J Org Chem 2023; 88:1836-1843. [PMID: 36696583 DOI: 10.1021/acs.joc.2c02392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A new synthesis of functionalized 2H-pyran-2-ones has been developed through N-heterocyclic carbene-catalyzed formal [3 + 3] annulation of alkynyl esters with enolizable ketones. The key to the success of this protocol relies on the use of an NHC instead of a tertiary amine as the catalyst. This protocol also features a broad substrate scope and mild metal-free conditions, offering simple and rapid access to the target molecules in a highly regioselective manner.
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Affiliation(s)
- Zheng Liang
- State Key Laboratory of Natural Medicines, School of Science, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Jibin Li
- State Key Laboratory of Natural Medicines, School of Science, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Lei Wang
- State Key Laboratory of Natural Medicines, School of Science, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Zexuan Wei
- State Key Laboratory of Natural Medicines, School of Science, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Jiahui Huang
- State Key Laboratory of Natural Medicines, School of Science, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Xinrui Wang
- State Key Laboratory of Natural Medicines, School of Science, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
| | - Ding Du
- State Key Laboratory of Natural Medicines, School of Science, China Pharmaceutical University, Nanjing, 210009, People's Republic of China
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Electrochemical sensing of sodium dehydroacetate in preserved strawberries based onin situ pyrrole electropolymerization at modified carbon paste electrodes. Food Chem 2023; 401:134058. [DOI: 10.1016/j.foodchem.2022.134058] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/10/2022] [Revised: 08/21/2022] [Accepted: 08/27/2022] [Indexed: 11/21/2022]
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Belen’kii LI, Gazieva GA, Evdokimenkova YB, Soboleva NO. The literature of heterocyclic chemistry, Part XX, 2020. ADVANCES IN HETEROCYCLIC CHEMISTRY 2022. [DOI: 10.1016/bs.aihch.2022.10.005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
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Hamama WS, Ghaith EA, Ibrahim ME, Sawamura M, Zoorob HH. Synthesis of 4‐Hydroxy‐2‐pyridinone Derivatives and Evaluation of Their Antioxidant/Anticancer Activities. ChemistrySelect 2021. [DOI: 10.1002/slct.202004682] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wafaa S. Hamama
- Department of Chemistry Faculty of Science Mansoura University Mansoura, 35516 Egypt
| | - Eslam A. Ghaith
- Department of Chemistry Faculty of Science Mansoura University Mansoura, 35516 Egypt
| | - Mona E. Ibrahim
- Department of Chemistry Faculty of Science Mansoura University Mansoura, 35516 Egypt
| | - Masaya Sawamura
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Sapporo 001-0021 Japan
| | - Hanafi H. Zoorob
- Department of Chemistry Faculty of Science Mansoura University Mansoura, 35516 Egypt
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Ghaith EA, Zoorob HH, Ibrahim ME, Sawamura M, Hamama WS. Convenient Synthesis of Binary and Fused Pyrazole Ring Systems: Accredited by Molecular Modeling and Biological Evaluation. ChemistrySelect 2020. [DOI: 10.1002/slct.202004014] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Eslam A. Ghaith
- Department of Chemistry Faculty of Science Mansoura University Mansoura 35516 Egypt
| | - Hanafi H. Zoorob
- Department of Chemistry Faculty of Science Mansoura University Mansoura 35516 Egypt
| | - Mona E. Ibrahim
- Department of Chemistry Faculty of Science Mansoura University Mansoura 35516 Egypt
| | - Masaya Sawamura
- Institute for Chemical Reaction Design and Discovery (WPI-ICReDD) Hokkaido University Sapporo 001-0021 Japan
| | - Wafaa S. Hamama
- Department of Chemistry Faculty of Science Mansoura University Mansoura 35516 Egypt
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