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Yıldırım A. Sustainable tandem acylation/Diels-Alder reaction toward versatile tricyclic epoxyisoindole-7-carboxylic acids in renewable green solvents. Beilstein J Org Chem 2024; 20:1308-1319. [PMID: 38887569 PMCID: PMC11181201 DOI: 10.3762/bjoc.20.114] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/14/2024] [Accepted: 05/24/2024] [Indexed: 06/20/2024] Open
Abstract
Tandem Diels-Alder reactions are often used for the straightforward formation of complex natural compounds and the fused polycyclic systems contained in their precursors. In the second step of this reaction, regio- and stereochemically controlled intramolecular cyclization leads to the formation of versatile nitrogen-containing tricyclic systems. However, these useful organic transformations are usually carried out in highly toxic organic solvents such as benzene, toluene, chloroform, etc. Despite recent efforts by 'green chemists', synthetic chemists still use these traditional toxic organic solvents in many of their reactions, even though safer alternatives are available. However, in addition to the harmful effects of these petrochemical solvents on the environment, the prediction that their resources will run out in the near future has led 'green chemists' to explore solvents that can be derived from renewable resources and used effectively in various organic transformations. In this context, we have shown for the first time that the 100% atom-economical tandem Diels-Alder reaction between aminofuranes and maleic anhydride can be carried out successfully in vegetable oils and waxes. The reaction was successfully carried out in sunflower seed oil, olive oil, oleic acid and lauryl myristate under mild reaction conditions. A series of epoxyisoindole-7-carboxylic acid and bisepoxyisoindole-7-carboxylic acids were obtained in good yields after a practical isolation procedure. The results obtained in this study demonstrate the potential of vegetable oils and their renewable materials to provide a reaction medium that is more sustainable than conventional organic solvents in cascade Diels-Alder reactions and can be used repeatedly without significant degradation. These materials also allow the reaction to be completed in less time, with less energy consumption and higher yields.
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Affiliation(s)
- Ayhan Yıldırım
- Department of Chemistry, Bursa Uludağ University, Bursa 16059, Turkey
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Zhang JK, Fang YC, Chen JH, Shan J, Bai M, Huang Q, Chen YZ, Han WY. Iodomethane in C1 chemistry: application in palladium-catalyzed [2 + 2 + 1] annulation. Org Biomol Chem 2024; 22:3204-3208. [PMID: 38563260 DOI: 10.1039/d4ob00329b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/04/2024]
Abstract
An efficient palladium-catalyzed [2 + 2 + 1] annulation of 3-iodochromones, bridged olefins, and iodomethane is described, affording a range of chromone-containing polycyclic compounds. Additionally, the corresponding deuterated products were smoothly obtained with iodomethane-d3 instead of iodomethane. Moreover, the synthetic utility of this method is further substantiated by gram scale preparation and application to late-stage modification of estrone.
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Affiliation(s)
- Jin-Ke Zhang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China.
| | - Yu-Chen Fang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China.
- School of Chemistry & Chemical Engineering, Xinjiang Normal University, Urumqi 830054, P. R. China
| | - Jia-He Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China.
| | - Jing Shan
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China.
| | - Mei Bai
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China.
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Qiang Huang
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China.
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Yong-Zheng Chen
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China.
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
| | - Wen-Yong Han
- Key Laboratory of Biocatalysis & Chiral Drug Synthesis of Guizhou Province, School of Pharmacy, Zunyi Medical University, Zunyi 563006, P. R. China.
- Key Laboratory of Basic Pharmacology of Ministry of Education and Joint International Research Laboratory of Ethnomedicine of Ministry of Education, Zunyi Medical University, Zunyi 563006, P. R. China
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Martín-Encinas E, Lopez-Aguileta L, Palacios F, Alonso C. Aza-Povarov Reaction. A Method for the Synthesis of Fused Tetracyclic Chromeno[4,3- d]pyrido[1,2- a]pyrimidines. J Org Chem 2024. [PMID: 38177107 DOI: 10.1021/acs.joc.3c02220] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2024]
Abstract
A cornerstone in drug discovery is the development of strategies to provide privileged small molecules with specific structural and stereochemical complexity, allowing access to new potential therapeutic entities. In this work, a new strategy based on the [4 + 2] Povarov reaction involving 1,3-diazadiene was developed. This approach is applied for a straightforward procedure in the preparation of chromeno[4,3-d]pyrido[1,2-a]pyrimidine derivatives, with accessible substrates, 2-aminopyridine and unsaturated aldehydes, and excellent atom economy to obtain four fused ring heterocycles, in a regio- and diastereoselective way.
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Affiliation(s)
- Endika Martín-Encinas
- Departamento de Química Orgánica I, Facultad de Farmacia and Lascaray Research Center, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU). Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
| | - Leyre Lopez-Aguileta
- Departamento de Química Orgánica I, Facultad de Farmacia and Lascaray Research Center, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU). Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
| | - Francisco Palacios
- Departamento de Química Orgánica I, Facultad de Farmacia and Lascaray Research Center, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU). Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
| | - Concepción Alonso
- Departamento de Química Orgánica I, Facultad de Farmacia and Lascaray Research Center, Universidad del País Vasco/Euskal Herriko Unibertsitatea (UPV/EHU). Paseo de la Universidad 7, Vitoria-Gasteiz 01006, Spain
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4
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Wada Y, Tsuchihashi K, Kanzaki M, Hamura T. Solid-State Generation of Diarylisonaphthofuran and Its Mechanochemical Diels-Alder Reaction with Epoxynaphthalene. Chemistry 2023:e202302660. [PMID: 37779416 DOI: 10.1002/chem.202302660] [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: 08/15/2023] [Revised: 09/27/2023] [Accepted: 09/27/2023] [Indexed: 10/03/2023]
Abstract
A solid-state method was developed for generating diarylisonaphthofurans from 1,3-diaryl-1,3-dihydronaphthofuranols. The generated reactive molecules were stable in the solid state and could be stored without any extra precautions. X-ray diffraction analysis revealed a typical quinoidal structure. Furthermore, the mechanochemical Diels-Alder reaction of 1,3-diarylisonaphthofurans with epoxynaphthalenes afforded synthetically attractive diepoxypentacenes.
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Affiliation(s)
- Yoshifumi Wada
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuenuegahara, Sanda, Hyogo, 669-1330, Japan
| | - Keidai Tsuchihashi
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuenuegahara, Sanda, Hyogo, 669-1330, Japan
| | - Masayoshi Kanzaki
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuenuegahara, Sanda, Hyogo, 669-1330, Japan
| | - Toshiyuki Hamura
- Department of Applied Chemistry for Environment, Kwansei Gakuin University, 1 Gakuenuegahara, Sanda, Hyogo, 669-1330, Japan
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Li MY, Li J, Gu A, Nong XM, Zhai S, Yue ZY, Feng CG, Liu Y, Lin GQ. Solvent-free and catalyst-free direct alkylation of alkenes. GREEN CHEMISTRY 2023; 25:7073-7078. [DOI: 10.1039/d3gc02685j] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 03/07/2024]
Abstract
A convenient method for synthesizing trisubstituted alkenes through direct alkylation of alkenes was achieved under solvent-free and catalyst-free conditions. This reaction highlighted by a low E-factor and a high atom- and step-economy.
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Affiliation(s)
- Meng-Yao Li
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Jiatong Li
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Ao Gu
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Xiao-Mei Nong
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Shuyang Zhai
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhu-Ying Yue
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Chen-Guo Feng
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai Frontiers Science Center for Traditional Chinese Medicine Chemical Biology, Shanghai University of Traditional Chinese Medicine, Shanghai, China
| | - Yingbin Liu
- State Key Laboratory of Systems Medicine for Cancer, Shanghai Cancer Institute, Department of Biliary-Pancreatic Surgery, Renji Hospital Affiliated to Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Guo-Qiang Lin
- The Research Center of Chiral Drugs, Innovation Research Institute of Traditional Chinese Medicine, Shanghai Frontiers Science Center for Traditional Chinese Medicine Chemical Biology, Shanghai University of Traditional Chinese Medicine, Shanghai, China
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