1
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Farajpour B, Alizadeh GB, Majedi S, Moradkhani F, Majedi S, Notash B, Hosseindoust B, Shiri M. Sulfur- and DABCO-Promoted Reaction between Alkylidene Rhodanines and Isothiocyanates: Access to Aminoalkylidene Rhodanines. ACS OMEGA 2024; 9:26607-26615. [PMID: 38911738 PMCID: PMC11191098 DOI: 10.1021/acsomega.4c03341] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/07/2024] [Revised: 05/16/2024] [Accepted: 05/23/2024] [Indexed: 06/25/2024]
Abstract
In this work, an efficient sulfur- and DABCO-promoted reaction for the synthesis of aminoalkylidene rhodanines from available alkylidene rhodanines and isothiocyanates is reported. A tandem process including sulfurative annulation/ring-opening by liberation of a CS2 molecule/olefination allows the synthesis of aminoalkylidene rhodanines with acceptable functional group tolerance. Chemo- and stereoselectivity, operational simplicity, and synthetically useful yields are some highlighted advantages of these transformations.
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Affiliation(s)
- Behnaz Farajpour
- Department
of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
| | - Gul Bahar Alizadeh
- Department
of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
| | - Soma Majedi
- Medical
Analysis Department, Applied Science Faculty, Tishk International University, Kurdistan Region 46001, Iraq
| | - Fatemeh Moradkhani
- Department
of Medicinal Chemistry, Faculty of Pharmacy and Pharmaceutical Sciences
Research Center, Tehran University of Medical
Sciences, Tehran P94V+8MF, Iran
| | - Serveh Majedi
- Department
of Chemistry, Payame Noor University, Tehran RG23+F4X, Iran
| | - Behrouz Notash
- Department
of Inorganic Chemistry, Shahid Beheshti
University, Tehran 1983969411, Iran
| | - Benyamin Hosseindoust
- Department
of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
| | - Morteza Shiri
- Department
of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
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2
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Iranfar S, Shiri M, Nosood YL, Keley ZA, Tanbakouchian Z, Amini Z, Al-Harrasi A, Hussain FHS. An efficient and practical approach for the synthesis of indoloquinolines and indolo/pyrroloquinoxalines via a Cu-catalyzed Ugi-C/Ugi- N-arylation sequence. RSC Adv 2024; 14:18271-18276. [PMID: 38854840 PMCID: PMC11157420 DOI: 10.1039/d4ra03248a] [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: 05/02/2024] [Accepted: 05/31/2024] [Indexed: 06/11/2024] Open
Abstract
A Cu-catalyzed tandem transformation of Ugi adducts through CH/NH bond functionalization reactions was reported for synthesizing a broad spectrum of indolo/pyrrolo-[1,2-a]quinoxaline-6/4-carboxamide, 7H-indolo[2,3-c]quinoline-6-carboxamide, and 1-(cyclohexylamino)-14H-indolo[2,3-c][1,4]oxazino[4,3-a]quinolin-4(3H)-one derivatives in moderate to excellent yields. In this protocol the Ugi condensation of aromatic aldehydes, anilines, acids, and isocyanides leads to the formation of bis-amides in methanol at room temperature. This approach employed simple reaction conditions, including Ugi product as starting material, CuI, l-proline as a ligand, and cesium carbonate, in DMSO for 8 h. This method demonstrated efficiency in synthesizing fused-nitrogen-containing heterocycles through a convenient pathway.
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Affiliation(s)
- Sheiva Iranfar
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Morteza Shiri
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Yazdanbakhsh Lotfi Nosood
- Natural and Medical Sciences Research Center, University of Nizwa P. O. Box 33, Birkat Al Mauz Postal Code 616 Nizwa Oman
| | - Zahra Akbari Keley
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Zahra Tanbakouchian
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Zahra Amini
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Ahmed Al-Harrasi
- Natural and Medical Sciences Research Center, University of Nizwa P. O. Box 33, Birkat Al Mauz Postal Code 616 Nizwa Oman
| | - Faiq H S Hussain
- Medical Analysis Department, Applied Science Faculty, Tishk International University Erbil Kurdistan Region Iraq
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3
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Ansari MF, Maurya AK, Kumar A, Elangovan S. Manganese-catalyzed C-C and C-N bond formation with alcohols via borrowing hydrogen or hydrogen auto-transfer. Beilstein J Org Chem 2024; 20:1111-1166. [PMID: 38887586 PMCID: PMC11181258 DOI: 10.3762/bjoc.20.98] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/27/2024] [Accepted: 04/24/2024] [Indexed: 06/20/2024] Open
Abstract
Transition-metal-mediated "borrowing hydrogen" also known as hydrogen auto-transfer reactions allow the sustainable construction of C-C and C-N bonds using alcohols as hydrogen donors. In recent years, manganese complexes have been explored as efficient catalysts in these reactions. This review highlights the significant progress made in manganese-catalyzed C-C and C-N bond-formation reactions via hydrogen auto-transfer, emphasizing the importance of this methodology and manganese catalysts in sustainable synthesis strategies.
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Affiliation(s)
- Mohd Farhan Ansari
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Atul Kumar Maurya
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Abhishek Kumar
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
| | - Saravanakumar Elangovan
- Department of Chemistry, Indian Institute of Technology (BHU), Varanasi, Uttar Pradesh 221005, India
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4
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Zhang GQ, Wu XX, Zhao BY, Wang MY, Zhang HX, Wang YQ. Palladium-Catalyzed Intermolecular Dehydrogenative C-2 Pentenylation of Indoles with 2-Methyl-2-butene. Org Lett 2024; 26:3509-3513. [PMID: 38652867 DOI: 10.1021/acs.orglett.4c00803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/25/2024]
Abstract
Five-carbon (C5) units are the fundamental building blocks that constitute a multitude of natural products. Herein we report an unprecedented unusual C5 functionalization of indole regioselectively at the C-2-position enabled by a (2-pyridyl)sulfonyl-directing palladium-catalyzed dehydrogenative strategy with a bulk chemical 2-methyl-2-butene as a C5 source. Compared to typical C5 functionalization using pentenyl alcohols, carbonates, borates, or halides as the C5 source, the protocol not only has a low cost advantage but also is of atom and step economy.
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Affiliation(s)
- Guo-Qiang Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Xiao-Xuan Wu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Bao-Yin Zhao
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Meng-Yue Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Hong-Xia Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
| | - Yong-Qiang Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, P. R. China
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5
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Rashid A, Lone WI, Dogra P, Rashid S, Bhat BA. HFIP-mediated C-3-alkylation of indoles and synthesis of indolo[2,3- b]quinolines & related natural products. Org Biomol Chem 2024; 22:3502-3509. [PMID: 38618907 DOI: 10.1039/d4ob00414k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/16/2024]
Abstract
An expeditious metal free C-3 alkylation of indoles and its NIS-mediated deviation to indolo[2,3-b]quinolines is reported. This protocol, executed in aqueous HFIP has broad substrate scope and is well inclined towards the ideas of sustainable chemistry. Applications of these strategies in accessing bioactive natural products like vibrindole, norcryptotakeine, neocryptolepine and indenoindolone scaffolds has also been demonstrated.
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Affiliation(s)
- Auqib Rashid
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Sanatnagar, Srinagar 190005, India.
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Jammu and Kashmir 180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Waseem I Lone
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Jammu and Kashmir 180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Preeti Dogra
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Jammu and Kashmir 180001, India.
| | - Showkat Rashid
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine Jammu, Jammu and Kashmir 180001, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
| | - Bilal A Bhat
- Natural Products & Medicinal Chemistry Division, CSIR-Indian Institute of Integrative Medicine, Sanatnagar, Srinagar 190005, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad 201002, India
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6
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Cao M, Zuo D, Wang D, Li Y, Zhao J, Tan J, Li P. Palladium-Catalyzed Iodine Assisted Carbonylation of Indoles with ClCF 2CO 2Na and Alcohols. J Org Chem 2024; 89:5871-5877. [PMID: 38595315 DOI: 10.1021/acs.joc.4c00110] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/11/2024]
Abstract
A palladium-catalyzed iodine-assisted carbonylation reaction of indoles with readily available ClCF2CO2Na and alcohols has been developed. This protocol provides a practical and efficient approach to highly regioselective indole-3-carboxylates via a preiodination strategy of indoles. Different from classic carbonylation using toxic and difficult-to-handle carbon monoxide, this operationally simple and scalable reaction employed difluorocarbene as the carbonyl surrogate.
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Affiliation(s)
- Mengting Cao
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Dandan Zuo
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Dan Wang
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Yafei Li
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Jingjing Zhao
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
| | - Jiajing Tan
- Department of Organic Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China
| | - Pan Li
- College of Chemistry and Molecular Sciences, Henan University, Kaifeng, Henan 475004, P. R. China
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7
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Farajpour B, Heydarzadeh R, Hussain FHS, Notash B, Mirzaei P, Shiri M. Three-Component Reaction between 3-Acetylcoumarins, Amines, and Elemental Sulfur: A Designed Approach to 3-Amino-4 H-thieno[3,2- c]coumarins. J Org Chem 2024; 89:4375-4383. [PMID: 38470427 DOI: 10.1021/acs.joc.3c02406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/13/2024]
Abstract
In this work, a series of novel 3-amino-4H-thieno[3,2-c]coumarins were designed and synthesized by a one-pot, catalyst-free, and three-component reaction of 3-acetylcoumarins with amines and elemental sulfur. Readily available starting materials, simple heating conditions, facile installation of a sulfur atom into the molecule using S8 as a sulfur source, acceptable functional group tolerance, and synthetically useful yields are some highlighted benefits of this process.
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Affiliation(s)
- Behnaz Farajpour
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
| | - Roujin Heydarzadeh
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
| | - Faiq H S Hussain
- Medical Analysis Department, Applied Science Faculty, Tishk International University, Erbil 44001, Kurdistan Region, Iraq
| | - Behrouz Notash
- Department of Inorganic Chemistry, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Peiman Mirzaei
- Department of Organic Chemistry, Shahid Beheshti University, Tehran 1983969411, Iran
| | - Morteza Shiri
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University, Vanak, Tehran 1993893973, Iran
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8
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Li J, Ni H, Zhang W, Lai Z, Jin H, Zeng L, Cui S. A multicomponent reaction for modular assembly of indole-fused heterocycles. Chem Sci 2024; 15:5211-5217. [PMID: 38577354 PMCID: PMC10988590 DOI: 10.1039/d4sc00522h] [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: 01/24/2024] [Accepted: 03/03/2024] [Indexed: 04/06/2024] Open
Abstract
Indoles are privileged chemical entities in natural products and drug discovery. Indole-fused heterocycles, particularly seven-membered ones, have received increasing attention due to their distinctive chemical characteristics and wide spectrum of bioactivities. However, the synthetic access to these compounds is highly limited. Herein, we report a unique multicomponent reaction (MCR) for modular assembly of indole-fused seven-membered heterocycles. In this process, indole, formaldehyde and amino hydrochloride could assemble rapidly to yield indole-fused oxadiazepines, and another addition of sodium thiosulphate would furnish indole-fused thiadiazepines. The biological evaluation disclosed the promising anticancer activity of these compounds. Furthermore, this MCR could be applicable in the late-stage and selective modifications of peptides. Therefore, this work provides a powerful strategy for indole functionalization and valuable tool for construction of seven-membered heterocycles.
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Affiliation(s)
- Jiaming Li
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Hao Ni
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Weiwei Zhang
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Zhencheng Lai
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Huimin Jin
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Linwei Zeng
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
| | - Sunliang Cui
- College of Pharmaceutical Sciences, National Key Laboratory of Advanced Drug Delivery and Release Systems, Zhejiang University 866 Yuhangtang Road Hangzhou 310058 China
- Jinhua Institute of Zhejiang University Jinhua Zhejiang Province 321299 China
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9
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Ghosh P, Karak A, Mahapatra AK. Small-molecule fluorogenic probes based on indole scaffold. Org Biomol Chem 2024; 22:2690-2718. [PMID: 38465421 DOI: 10.1039/d3ob02057f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2024]
Abstract
Indoles are the most versatile organic N-heterocyclic compounds widely present in bioactive natural products and used in different fields such as coordination chemistry, pharmacy, dyes, and medicine, as well as in the biology and polymer industries. More recently, the indole scaffold has been widely used in analytical chemistry for the design and development of small-molecule fluorescent chemosensors in the fields of molecular recognition and molecular imaging. The indole-based chemosensor derivatives contain heteroatoms like N-, O-, and S-, through which they interact with analytes (cations, anions, and neutral species), producing measurable analytical signals that can be used for the fluorimetric and colorimetric detection of different analytes in biological, agricultural and environmental samples. This review focuses on indole-based small-molecule fluorimetric and colorimetric chemosensors for detecting cations, anions, and neutral species in a comprehensive manner. Furthermore, the recognition mechanisms are discussed in detail, which could help researchers design and develop more powerful and efficient fluorescent chemosensors in the near future.
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Affiliation(s)
- Pintu Ghosh
- Molecular Sensor and Supramolecular Chemistry Laboratory, Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, West Bengal, India.
| | - Anirban Karak
- Molecular Sensor and Supramolecular Chemistry Laboratory, Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, West Bengal, India.
| | - Ajit Kumar Mahapatra
- Molecular Sensor and Supramolecular Chemistry Laboratory, Department of Chemistry, Indian Institute of Engineering Science and Technology, Shibpur, Howrah-711103, West Bengal, India.
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10
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Liu WJ, Hu ZC, Wu YX, Deng SH, Ren ZL, Dong ZB. Selective Construction of C-S/S-N Bonds from N-Substituted O-Thiocarbamates and Indoles under Transition-Metal-Free Conditions. J Org Chem 2024; 89:4098-4112. [PMID: 38421813 DOI: 10.1021/acs.joc.3c02940] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/02/2024]
Abstract
A method for the selective construction of S-N/C(sp2)-S bonds using N-substituted O-thiocarbamates and indoles as substrates is reported. This protocol features good atom utilization, mild conditions, short reaction time, and wide substrate scope, which can provide a convenient path for the functionalization of indoles. In addition, the reaction could be scaled up on gram scale, showing potential application value in industry synthesis.
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Affiliation(s)
- Wen-Jie Liu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Zhi-Chao Hu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Yu-Xi Wu
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Shi-Hao Deng
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
| | - Zhi-Lin Ren
- College of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053, China
| | - Zhi-Bing Dong
- School of Chemistry and Environmental Engineering, Wuhan Institute of Technology, Wuhan 430205, China
- College of Chemical Engineering, Hubei University of Arts and Science, Xiangyang 441053, China
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang 453007, China
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11
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Tokushige K, Abe T. On Demand Synthesis of C3-N1' Bisindoles by a Formal Umpolung Strategy: First Total Synthesis of (±)-Rivularin A. Chemistry 2024; 30:e202302963. [PMID: 37988219 DOI: 10.1002/chem.202302963] [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: 09/12/2023] [Revised: 11/20/2023] [Accepted: 11/21/2023] [Indexed: 11/23/2023]
Abstract
In this work, a straightforward synthesis of C3-N1' bisindolines is achieved by a formal umpolung strategy. The protocols were tolerant of a wide variety of substituents on the indole and indoline ring. In addition, the C3-N1' bisindolines could be converted to C3-N1' indole-indolines and C3-N1'-bisindoles. Also, we have successfully synthesized (±)-rivularin A through a biomimetic late-stage tribromination as a key step.
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Affiliation(s)
- Keisuke Tokushige
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
| | - Takumi Abe
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
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12
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Salem M, El-Gabry YA, Abdelhamid IA, Elwahy AHM, Zaki MEA, Diab HM. Synthesis of Novel Diphenyl Ether-Based Bis-Heterocycles as Novel Hybrid Molecules via Michael and Other Cyclocondensation Reactions. ACS OMEGA 2024; 9:4073-4084. [PMID: 38284066 PMCID: PMC10809258 DOI: 10.1021/acsomega.3c09081] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/15/2023] [Revised: 12/21/2023] [Accepted: 12/27/2023] [Indexed: 01/30/2024]
Abstract
Molecular hybridization is a technique used in drug creation that involves combining the pharmacophoric moieties of multiple bioactive compounds to create a new hybrid molecule with better affinity and effectiveness. In this regard, we created unique hybrid molecules out of diphenyl ether-linked fused pyrans and other heterocycles. The Michael reaction of 4,4'-oxydibenzaldehyde with malononitrile and various active methylene derivatives, as well as enaminone derivatives, produced the matching bis-fused pyrans and fused pyridines, both connected to a diphenyl ether moiety. Furthermore, the acid-catalyzed reaction of 4,4'-oxydibenzaldehyde with dimedone or β-naphthol produced the corresponding new bis(hexahydro-1H-xanthene-1,8-dione) and bis(14H-dibenzo[a,j]xanthene). The processes by which the target products are formed were also examined.
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Affiliation(s)
- Mostafa
E. Salem
- Department
of Chemistry, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
- Department
of Chemistry, Faculty of Science, Cairo
University, Giza 12613, Egypt
| | - Yassmen A. El-Gabry
- Department
of Chemistry, Faculty of Science, Cairo
University, Giza 12613, Egypt
| | - Ismail A. Abdelhamid
- Department
of Chemistry, Faculty of Science, Cairo
University, Giza 12613, Egypt
| | - Ahmed H. M. Elwahy
- Department
of Chemistry, Faculty of Science, Cairo
University, Giza 12613, Egypt
| | - Magdi E. A. Zaki
- Department
of Chemistry, College of Science, Imam Mohammad
Ibn Saud Islamic University (IMSIU), Riyadh 11623, Saudi Arabia
| | - Hadeer M. Diab
- Department
of Chemistry, Faculty of Science, Cairo
University, Giza 12613, Egypt
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13
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Mohamed MF, Ibrahim NS, Saddiq AA, Abdelhamid IA. Novel 3-(pyrazol-4-yl)-2-(1H-indole-3-carbonyl)acrylonitrile derivatives induce intrinsic and extrinsic apoptotic death mediated P53 in HCT116 colon carcinoma. Sci Rep 2023; 13:22486. [PMID: 38110432 PMCID: PMC10728220 DOI: 10.1038/s41598-023-48494-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2023] [Accepted: 11/27/2023] [Indexed: 12/20/2023] Open
Abstract
A novel series of α-cyano indolylchalcones was prepared, and their chemical structures were confirmed based on the different spectral data. Among them, compound 7f was observed to be the most effective bioactive chalcone with distinguished potency and selectivity against colorectal carcinoma (HCT116) with IC50 value (6.76 µg/mL) relative to the positive control (5 FU) (77.15 µg/mL). In a preliminary action study, the acrylonitrile chalcone 7f was found to enhance apoptotic action via different mechanisms like inhibition of some anti-apoptotic protein expression, regulation of some apoptotic proteins, production of caspases, and cell cycle arrest. All mechanisms suggested that compound 7f could act as a professional chemotherapeutic agent. Also, a molecular docking study was achieved on some selected proteins implicated in cancer (Caspase 9, XIAP, P53 mutant Y220C, and MDM2) which showed variable interactions with compound 7f with good Gibbs free energy scores.
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Affiliation(s)
- Magda F Mohamed
- Department of Chemistry, College of Science and Arts at Khaulis, University of Jeddah, Jeddah, Saudi Arabia.
- Department of Chemistry (Biochemistry Branch), Faculty of Science, Cairo University, Giza, Egypt.
| | - Nada S Ibrahim
- Department of Chemistry (Biochemistry Branch), Faculty of Science, Cairo University, Giza, Egypt
| | - Amna A Saddiq
- Department of Biology, College of Science and Arts at Khaulis, University of Jeddah, Jeddah, Saudi Arabia
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14
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Zhang B, Erb FR, Vasilopoulos A, Voight EA, Alexanian EJ. General Synthesis of N-Alkylindoles from N, N-Dialkylanilines via [4 + 1] Annulative Double C-H Functionalization. J Am Chem Soc 2023; 145:26540-26544. [PMID: 38029320 PMCID: PMC10789186 DOI: 10.1021/jacs.3c10751] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023]
Abstract
Strategies enabling the construction of indoles and novel polycyclic heterocycles from simple building blocks streamline syntheses in synthetic and medicinal chemistry. Herein, we report a C-H functionalization approach to N-alkylindoles proceeding via a double, site-selective C(sp3)-H/C(sp2)-H [4 + 1] annulation of readily accessed N,N-dialkylanilines. This protocol features a site-selective hydrogen atom transfer by a tuned N-tBu amidyl radical and addition of a sulfonyl diazo coupling partner, which promotes highly site-selective homolytic aromatic substitution of the (hetero)aromatic core. Mild decarboxylation of the annulation product enables the overall introduction of a carbyne equivalent into the N,N-dialkylaniline scaffold. Furthermore, the site-selectivity and mild conditions of the indolization facilitate direct access to N-alkyl indole scaffolds in late-stage functionalization (LSF) settings.
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Affiliation(s)
- Bowen Zhang
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | - Frederik R. Erb
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
| | | | - Eric A. Voight
- AbbVie, Inc., North Chicago, Illinois 60064, United States
| | - Erik J. Alexanian
- Department of Chemistry, The University of North Carolina at Chapel Hill, Chapel Hill, NC 27599, United States
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15
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Zheng J, Tao F, Shen X, Yang Z, Zhang J, Chen Y, Liu X, Qi Y, Luo H. Rapid Construction of Vinyl Indomorphans by Rhenium Catalysis. Org Lett 2023; 25:8457-8462. [PMID: 37976044 DOI: 10.1021/acs.orglett.3c03367] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
Here, an efficient route for accessing the vinylindomorphan skeleton is achieved by rhenium(I) catalysis. This transformation involves the condensation of indoles and alkyne-linked cyclohexanones, followed by intramolecular annulation to build the [3.3.1] bicyclic structure. This protocol complements the synthesis of the structurally complex heterocycles bearing a vinyl indole moiety. In addition, the selected products exhibited moderate cytotoxicity toward human A549 cells.
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Affiliation(s)
- Jia Zheng
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
- The Marine Biomedical Research Institute of Guangdong, Zhanjiang 524023, China
| | - Furong Tao
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Xiaoqin Shen
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Zhongtao Yang
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
- The Marine Biomedical Research Institute of Guangdong, Zhanjiang 524023, China
| | - Juanjuan Zhang
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Yanduo Chen
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Xuran Liu
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Yi Qi
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
| | - Hui Luo
- The Marine Biomedical Research Institute, Guangdong Medical University, Zhanjiang 524023, China
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16
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Ledermann N, Moubsit AE, Müller TJJ. Consecutive four-component synthesis of trisubstituted 3-iodoindoles by an alkynylation-cyclization-iodination-alkylation sequence. Beilstein J Org Chem 2023; 19:1379-1385. [PMID: 37736394 PMCID: PMC10509542 DOI: 10.3762/bjoc.19.99] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2023] [Accepted: 09/04/2023] [Indexed: 09/23/2023] Open
Abstract
A library of 19 differently substituted 3-iodoindoles is generated by a consecutive four-component reaction starting from ortho-haloanilines, terminal alkynes, N-iodosuccinimide, and alkyl halides in yields of 11-69%. Initiated by a copper-free alkynylation, followed by a base-catalyzed cyclizive indole formation, electrophilic iodination, and finally electrophilic trapping of the intermediary indole anion with alkyl halides provides a concise one-pot synthesis of 3-iodoindoles. The latter are valuable substrates for Suzuki arylations, which are exemplified with the syntheses of four derivatives, some of them are blue emitters in solution and in the solid state, in good yield.
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Affiliation(s)
- Nadia Ledermann
- Heinrich-Heine Universität Düsseldorf, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| | - Alae-Eddine Moubsit
- Heinrich-Heine Universität Düsseldorf, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstraße 1, D-40225 Düsseldorf, Germany
| | - Thomas J J Müller
- Heinrich-Heine Universität Düsseldorf, Institut für Organische Chemie und Makromolekulare Chemie, Universitätsstraße 1, D-40225 Düsseldorf, Germany
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17
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Yu M, Zeng L, Xu G, Cui S. Multicomponent Reactions for Expeditious Construction of β-Indole Carboxamide Amino Amides. J Org Chem 2023; 88:12150-12161. [PMID: 37498054 DOI: 10.1021/acs.joc.3c01426] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 07/28/2023]
Abstract
A multicomponent reaction of N-indole carboxylic acids, aldehydes, amines, and C2 building blocks can be transformed to structurally diverse β-indole carboxamide amino amides. In this multicomponent reaction, the ynamides and triazenyl alkynes act as the C2 building block, and this protocol features readily available starting materials, high atom economy, and mild reaction conditions. Besides, the acyl triazene group in the product can be easily transformed to differential groups to expand the structural diversity.
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Affiliation(s)
- Mengyao Yu
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Linwei Zeng
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
| | - Gang Xu
- College of Chemical and Biological Engineering, Zhejiang University, Hangzhou 310058, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou 310058, China
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18
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Li J, Lai Z, Zhang W, Zeng L, Cui S. Modular assembly of indole alkaloids enabled by multicomponent reaction. Nat Commun 2023; 14:4806. [PMID: 37558669 PMCID: PMC10412628 DOI: 10.1038/s41467-023-40598-y] [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: 04/01/2023] [Accepted: 08/03/2023] [Indexed: 08/11/2023] Open
Abstract
Indole alkaloids are one of the largest alkaloid classes, proving valuable structural moiety in pharmaceuticals. Although methods for the synthesis of indole alkaloids are constantly explored, the direct single-step synthesis of these chemical entities with broad structural diversity remains a formidable challenge. Herein, we report a modular assembly of tetrahydrocarboline type of indole alkaloids from simple building blocks in a single step while showing broad compatibility with medicinally relevant functionality. In this protocol, the 2-alkylated or 3-alkylated indoles, formaldehyde, and amine hydrochlorides could undergo a one-pot reaction to deliver γ-tetrahydrocarbolines or β-tetrahydrocarbolines directly. A wide scope of these readily available starting materials is applicable in this process, and numerous structural divergent tetrahydrocarbolines could be achieved rapidly. The control reaction and deuterium-labelling reaction are conducted to probe the mechanism. And mechanistically, this multicomponent reaction relies on a multiple alkylamination cascade wherein an unusual C(sp3)-C(sp3) connection was involved in this process. This method could render rapid access to pharmaceutically interesting compounds, greatly enlarge the indole alkaloid library and accelerate the lead compound optimization thus facilitating drug discovery.
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Affiliation(s)
- Jiaming Li
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Zhencheng Lai
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Weiwei Zhang
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Linwei Zeng
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China
| | - Sunliang Cui
- Institute of Drug Discovery and Design, National Key Laboratory of Advanced Drug Delivery and Release Systems, College of Pharmaceutical Sciences, Zhejiang University, Hangzhou, 310058, China.
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19
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Heydari M, Mohammadi AA, Mosleh M. The regioselective one-pot four-component synthesis of novel functionalized 4H-pyrano[2, 3-b]quinoline derivatives using DABCO as a homogeneous organocatalyst. Mol Divers 2023; 27:1843-1851. [PMID: 36070160 DOI: 10.1007/s11030-022-10518-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2022] [Accepted: 08/16/2022] [Indexed: 11/29/2022]
Abstract
This study deals with the synthesis of the regioselective and facile domino one-pot four-component reaction of 2-chloroquinoline-3-carbaldehydes, 1, 3-cyclodione compounds (as cyclic active methylene), ethyl acetoacetate (as β-keto ester), and hydrazine hydrate in the presence of DABCO as a homogeneous organocatalyst yielding a novel series of 4H-pyrano[2, 3-b]quinolones. This multicomponent reaction has some advantages; the significant one is C-O bond formation under metal-free conditions. Other benefits include simple procedure, mild and green condition, high yield, easy purification, and excellent regioselectivity. All polycyclic products (7a-k, 11 new compounds) were characterized by IR, 1H NMR, 13C NMR, and mass spectra.
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Affiliation(s)
- Masumeh Heydari
- Chemistry and Chemical Engineering Research Center of Iran, Tehran, Iran
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20
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Fnaiche A, Bueno B, McMullin CL, Gagnon A. On the Barton Copper-Catalyzed C3-Arylation of Indoles using Triarylbismuth bis(trifluoroacetate) Reagents. Chempluschem 2023; 88:e202200465. [PMID: 36843381 DOI: 10.1002/cplu.202200465] [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: 12/31/2022] [Revised: 02/21/2023] [Accepted: 02/23/2023] [Indexed: 02/28/2023]
Abstract
We disclose herein our detailed investigation into the Barton copper-promoted C3-arylation of indoles using triarylbismuth bis(trifluoroacetates). The arylation of unsubstituted 1H-indole using Barton's conditions gave a low yield of the C3-arylated indole, along with small amounts of the product of double C2/C3-arylation and traces of the product of C2 arylation. On the contrary, the arylation of indoles blocked at the C2 position is highly efficient, affording the desired products of C3-arylation in good to excellent yields. The reaction operates under simple conditions, shows good substrate scope, excellent functional group compatibility, and allows the transfer of electron-neutral or deficient aryl groups. Computational studies propose a mechanism involving a trifluoroacetate-assisted C-H activation step.
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Affiliation(s)
- Ahmed Fnaiche
- Département de chimie, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, H3C 3P8, Montréal, Québec, Canada
| | - Bianca Bueno
- Département de chimie, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, H3C 3P8, Montréal, Québec, Canada
| | - Claire L McMullin
- Department of Chemistry, University of Bath, Claverton Down, Bath, BA2 7AY, UK
| | - Alexandre Gagnon
- Département de chimie, Université du Québec à Montréal, C.P. 8888, Succursale Centre-Ville, H3C 3P8, Montréal, Québec, Canada
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21
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Guo B, Lv J, Lu L, Hua R. Synthesis of Cyclopenta[ c]quinolines by Palladium-Catalyzed Cyclization of 3-Bromoindoles with Internal Alkynes via Spirocyclic Cyclopentadiene Intermediates. J Org Chem 2023. [PMID: 37339369 DOI: 10.1021/acs.joc.3c00716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/22/2023]
Abstract
A novel method for the construction of a cyclopenta[c]quinoline ring via cyclization of 3-bromoindoles with internal alkynes in the presence of palladium is described. The formation of the cyclopenta[c]quinoline ring is proposed from a double [1,5] carbon sigmatropic rearrangement of the spirocyclic cyclopentadiene intermediate, which is generated in situ from the cyclization of 3-bromoindoles with internal alkynes involving a sequential double alkyne insertion into the carbon-palladium bond and dearomatization of indole. The present studies have developed a novel ring-expansion reaction of the pyrrole ring to pyridine via one carbon insertion into the C2-C3 bond of indoles and provided a simple and distinct route for the construction of tricyclic fused-quinoline derivatives that are not easy to access with conventional methods.
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Affiliation(s)
- Biao Guo
- Department of Chemistry, Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
| | - Jiaying Lv
- 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
| | - Ruimao Hua
- Department of Chemistry, Key Laboratory of Organic Optoelectronics & Molecular Engineering of Ministry of Education, Tsinghua University, Beijing 100084, China
- State Key Laboratory of Chemistry and Utilization of Carbon-Based Energy Resources, College of Chemistry, Xinjiang University, Urumqi 830017, China
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22
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Tajik M, Shiri M, Hussain FHS, Lotfi Nosood Y, Baeiszadeh B, Amini Z, Bikas R, Pyra A. Highly regioselective and diastereoselective synthesis of novel pyrazinoindolones via a base-mediated Ugi- N-alkylation sequence. RSC Adv 2023; 13:16963-16969. [PMID: 37288378 PMCID: PMC10243185 DOI: 10.1039/d3ra02065g] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/29/2023] [Accepted: 05/24/2023] [Indexed: 06/09/2023] Open
Abstract
An efficient base-mediated/metal-free approach has been developed for the synthesis of 1-oxo-1,2,3,4-tetrahydropyrazino[1,2-a]indole-3-carboxamide derivatives via intramolecular indole N-H alkylation of novel bis-amide Ugi-adducts. In this protocol the Ugi reaction of (E)-cinnamaldehyde derivatives, 2-chloroaniline, indole-2-carboxylic acid and different isocyanides was designed for the preparation of bis-amides. The main highlight of this study is the practical and highly regioselective preparation of new polycyclic functionalized pyrazino derivatives. This system is facilitated by Na2CO3 mediation in DMSO and 100 °C conditions.
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Affiliation(s)
- Maryam Tajik
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Morteza Shiri
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Faiq H S Hussain
- Medical Analysis Department, Applied Science Faculty, Tishk International University Erbil Kurdistan Region Iraq
| | - Yazdanbakhsh Lotfi Nosood
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Behnaz Baeiszadeh
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Zahra Amini
- Department of Organic Chemistry, Faculty of Chemistry, Alzahra University Vanak Tehran 1993893973 Iran
| | - Rahman Bikas
- Department of Chemistry, Faculty of Science, Imam Khomeini International University Qazvin 34148-96818 Iran
| | - Anna Pyra
- Faculty of Chemistry, University of Wrocław 14 Joliot-Curie 50-383 Wroclaw Poland
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23
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Zhang YB, Li BS, Xu GJ, Sun W, Sun M. Rh(III)-Catalyzed Double C-H Functionalization of Indoles with Cyclopropenones via Sequential C-H/C-C/C-H Bond Activation. Org Lett 2023. [PMID: 37200408 DOI: 10.1021/acs.orglett.3c01292] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/20/2023]
Abstract
An unprecedented Rh(III)-catalyzed double C-H functionalization of indoles with cyclopropenones via sequential C-H/C-C/C-H bond activation has been developed. This procedure represents the first example for assembling of cyclopenta[b]indoles utilizing cyclopropenones as 3C synthons. This powerful approach shows excellent chemo- and regioselectivity, wide functional group tolerance, and good reaction yields.
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Affiliation(s)
- Yan-Bo Zhang
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Bin-Shi Li
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Guo-Jie Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Wei Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
| | - Meng Sun
- Key Laboratory of Synthetic and Natural Functional Molecule of Ministry of Education, College of Chemistry & Materials Science, Northwest University, Xi'an 710127, China
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24
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Abdelwahab RE, Abdelhamid IA, Elwahy AHM, Abdelmoniem AM. Synthesis of novel acridines, tetrahydrodipyrazolo [3,4- b:4',3'- e]pyridines, tri-substituted methanes (TRSMs) bearing 2-(4-(1-phenyl-1 H-pyrazol-3-yl)phenoxy)- N-phenylacetamide unit as novel hybrid molecules. SYNTHETIC COMMUN 2023. [DOI: 10.1080/00397911.2023.2190462] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
Affiliation(s)
| | | | - Ahmed H. M. Elwahy
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
| | - Amr M. Abdelmoniem
- Department of Chemistry, Faculty of Science, Cairo University, Giza, Egypt
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25
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Chen Y, Yan YH, Zhu BH, Chen F, Li L, Qian PC. Copper-Catalyzed Tandem Cyclization/Direct C(sp 2)-H Annulation of Azide-Ynamides via α-Imino Copper Carbenes: Access to Azepino[2,3- b:4,5- b']diindoles. Org Lett 2023; 25:2063-2067. [PMID: 36939559 DOI: 10.1021/acs.orglett.3c00434] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/21/2023]
Abstract
A novel copper-catalyzed tandem cyclization/direct C(sp2)-H annulation of phenyl azide-ynamides via α-imino copper carbenes has been developed, which provides a concise and flexible approach for the construction of a range of valuable azepino[2,3-b:4,5-b']diindoles in mostly good to excellent yields with high chemoselectivities. This tandem reaction also exhibits a broad substrate scope, excellent functional group tolerance, simple operation, and mild reaction conditions.
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Affiliation(s)
- Yi Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Yao-Hong Yan
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Bo-Han Zhu
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Fan Chen
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Long Li
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Peng-Cheng Qian
- College of Chemistry & Materials Engineering, Wenzhou University, Wenzhou 325035, China.,Wenzhou Key Laboratory of Technology and Application of Environmental Functional Materials, Institute of New Materials & Industry Technology, Wenzhou University, Wenzhou 325000, China
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26
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Banda S, Villinger A, Brasholz M. Synthesis of azepane-fused pyrano[3,2- b]indoles by Lewis acid-catalysed oxa Diels-Alder reactions. Org Biomol Chem 2023; 21:4379-4381. [PMID: 36883361 DOI: 10.1039/d3ob00234a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
Abstract
The dihydroazepino[1,2-a]indole diones 3 are tricyclic oxindole-type enones which are readily accessible by catalytic photooxygenation of cyclohepta[b]indoles 1 followed by dehydration. Lewis acid-catalysed oxa Diels-Alder reactions of enones 3 with enol ethers 4 were developed that lead to novel tetracyclic azepane-fused pyrano[3,2-b]indoles 5, with high stereoselectivity and under mild reaction conditions.
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Affiliation(s)
- Saikumar Banda
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany.
| | - Alexander Villinger
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany.
| | - Malte Brasholz
- University of Rostock, Institute of Chemistry, Albert-Einstein-Str. 3a, 18059 Rostock, Germany. .,Leibniz-Institut für Katalyse e.V., Albert-Einstein-Str. 29a, 18059 Rostock, Germany
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27
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Qian C, Li X, Zhang M. Arene Diazonium Tetrafluoroborate Salts: Novel Lewis Acid Catalysts for Friedel‐Crafts Alkylation of Indoles with α,β‐Unsaturated Ketones. ChemistrySelect 2023. [DOI: 10.1002/slct.202204860] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/05/2023]
Affiliation(s)
- Cunwei Qian
- School of Chemical & Environmental Engineering Yancheng Teachers University Yancheng 224007 Jiangsu China
| | - Xian Li
- School of Chemical & Environmental Engineering Yancheng Teachers University Yancheng 224007 Jiangsu China
| | - Ming Zhang
- School of Chemical & Environmental Engineering Yancheng Teachers University Yancheng 224007 Jiangsu China
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28
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Abdelmoniem AM, Ramadan MA, Ghozlan SAS, Butenschön H, Abdelhamid IA. New Azacycles by One-Pot Three-Component Hantzsch-Like Synthesis of Tetra(hexa)azacyclopenta[a]anthracenes, Tetraazaindeno[5,4-b]fluorenes, and Oxatetraazacyclopenta[m]tetraphenes. ChemistryOpen 2023; 12:e202300009. [PMID: 36855319 PMCID: PMC9975464 DOI: 10.1002/open.202300009] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2023] [Revised: 02/04/2023] [Indexed: 03/02/2023] Open
Abstract
New Azacycles by One-Pot Three-Component Hantzsch-Like Synthesis of Tetra(hexa)azacyclopenta[a]anthracenes, Tetraazaindeno[5,4-b]fluorenes, and Oxatetraazacyclopenta[m]tetraphenes (H. Butenschön, I. A. Abdelhamid et al.) #OpenAccess Multicomponent reactions (MCRs) are envisaged as an entry point for the synthesis of heterocyclic compounds with interesting biological activities. An efficient approach to annelated tetra(hexa)azacyclopenta[a]anthracenes, tetraazaindeno[5,4-b]fluorenes, and oxatetraazacyclopenta[m]tetraphene was accomplished using a three-component reaction involving 7-amino-2-methyl-3-phenylpyrazolo[1,5-a]pyrimidin-5-one with aromatic aldehydes and the corresponding active 1,3-dicarbonyl compounds (namely, dimedone, 1,3-dimethylbarbituric acid, 1,3-indanedione, and 4-hydroxycoumarine). The reactions were conducted in glacial acetic acid at reflux for 5 h to give the desired products in good yields (62-83 %). The chemical constitutions of all new products were confirmed spectroscopically.
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Affiliation(s)
| | | | | | - Holger Butenschön
- Institut für Organische ChemieLeibniz Universität HannoverSchneiderberg 1B30167HannoverGermany
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29
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Simek Tosino H, Jung A, Fuhr O, Muhle‐Goll C, Jung N, Bräse S. F‐Tag Induced Acyl Shift in the Photochemical Cyclization of
o
‐Alkynylated
N
‐Alkyl‐
N
‐acylamides to Indoles**. European J Org Chem 2023. [DOI: 10.1002/ejoc.202201132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Affiliation(s)
- Helena Simek Tosino
- Institute of Biological and Chemical Systems (IBCS-FMS) Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - André Jung
- Institute of Biological and Chemical Systems (IBCS-FMS) Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Olaf Fuhr
- Institute of Nanotechnology Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Karlsruhe Nano Micro Facility Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Claudia Muhle‐Goll
- Institute for Biological Interfaces 4 Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Nicole Jung
- Institute of Biological and Chemical Systems (IBCS-FMS) Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Karlsruhe Nano Micro Facility Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
| | - Stefan Bräse
- Institute of Biological and Chemical Systems (IBCS-FMS) Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
- Karlsruhe Nano Micro Facility Karlsruhe Institute of Technology Hermann-von-Helmholtz-Platz 1 76344 Eggenstein-Leopoldshafen Germany
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30
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Carbon Quantum Dots: Synthesis, Structure, Properties, and Catalytic Applications for Organic Synthesis. Catalysts 2023. [DOI: 10.3390/catal13020422] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
Carbon quantum dots (CQDs), also known as carbon dots (CDs), are novel zero-dimensional fluorescent carbon-based nanomaterials. CQDs have attracted enormous attention around the world because of their excellent optical properties as well as water solubility, biocompatibility, low toxicity, eco-friendliness, and simple synthesis routes. CQDs have numerous applications in bioimaging, biosensing, chemical sensing, nanomedicine, solar cells, drug delivery, and light-emitting diodes. In this review paper, the structure of CQDs, their physical and chemical properties, their synthesis approach, and their application as a catalyst in the synthesis of multisubstituted 4H pyran, in azide-alkyne cycloadditions, in the degradation of levofloxacin, in the selective oxidation of alcohols to aldehydes, in the removal of Rhodamine B, as H-bond catalysis in Aldol condensations, in cyclohexane oxidation, in intrinsic peroxidase-mimetic enzyme activity, in the selective oxidation of amines and alcohols, and in the ring opening of epoxides are discussed. Finally, we also discuss the future challenges in this research field. We hope this review paper will open a new channel for the application of CQDs as a catalyst in organic synthesis.
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31
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Applications of Hantzsch Esters in Organocatalytic Enantioselective Synthesis. Catalysts 2023. [DOI: 10.3390/catal13020419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/18/2023] Open
Abstract
Hantzsch esters (1,4-dihydropyridine dicarboxylates) have become, in this century, very versatile reagents for enantioselective organic transformations. They can act as hydride transfer agents to reduce, regioselectively, a variety of multiple bonds, e.g., C=C and C=N, under mild reaction conditions. They are excellent reagents for the dearomatization of heteroaromatic substances, and participate readily in cascade processes. In the last few years, they have also become useful reagents for photoredox reactions. They can participate as sacrificial electron and hydrogen donors and when 4-alkyl or 4-acyl-substituted, they can act as alkyl or acyl radical transfer agents. These last reactions may take place in the presence or absence of a photocatalyst. This review surveys the literature published in this area in the last five years.
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32
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Xu X, Gao D, Wang J, Tang XY, Wang L. The B(C 6F 5) 3·H 2O promoted synthesis of fluoroalkylated 3,3',3''-trisindolylmethanes from fluorocarboxylic acids and indoles. Org Biomol Chem 2023; 21:1478-1486. [PMID: 36655817 DOI: 10.1039/d2ob02241a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
Trisindolylmethanes (TIMs) exist in many bioactive natural products and are frequently applied in medicinal chemistry and materials science. Herein, a simple and efficient protocol promoted by B(C6F5)3·H2O for the synthesis of their fluoroalkylated analogues, fluoroalkylated 3,3',3''-TIMs, is reported for the first time. Easily accessible fluorocarboxylic acids are utilized as the fluoroalkyl sources, exhibiting an obvious fluorine effect. This convenient and green process features mild and metal-free conditions, easy scale-up, and an environmentally friendly byproduct.
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Affiliation(s)
- Xin Xu
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Bio-inorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Dandan Gao
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Bio-inorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Jiahua Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Bio-inorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Xiang-Ying Tang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Bio-inorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
| | - Long Wang
- Key Laboratory of Material Chemistry for Energy Conversion and Storage, Ministry of Education; Hubei Key Laboratory of Bio-inorganic Chemistry & Materia Medica; School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.
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Omidi M, Mobinikhaledi A, Ahadi N. A Facile and Efficient Synthesis of Indole Derivatives in Aqueous Media Catalyzed by [DMAP-SO 3H]Cl and [DMAP-H]HSO 4. ORG PREP PROCED INT 2023. [DOI: 10.1080/00304948.2022.2162319] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/16/2023]
Affiliation(s)
- Mahdi Omidi
- Department of Chemistry, Faculty of Science, Arak University, Arak, Iran
| | - Akbar Mobinikhaledi
- Department of Chemistry, Faculty of Science, Arak University, Arak, Iran
- Institute of Nanosciences and Nanotechnology, Arak University, Arak, Iran
| | - Najmieh Ahadi
- Department of Chemistry, Faculty of Science, Arak University, Arak, Iran
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34
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Sun YF, Tang QQ, Zhang Y, Yang F, Liu YJ, Cong W. Crystal structure of 1-(2-iodobenzoyl)-6-methoxy-1 H-indole-3-carbaldehyde, C 17H 12INO 3. Z KRIST-NEW CRYST ST 2023. [DOI: 10.1515/ncrs-2022-0599] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
Abstract
C17H12INO3, monoclinic, P21/n (no. 14), a = 7.5319(5) Å, b = 7.9745(5) Å, c = 25.1313(17) Å, β = 98.459(7)°, V = 1493.04(17) Å3, Z = 4, R
gt
(F) = 0.0272, wR
ref
(F
2) = 0.0595, T = 199.98(10) K.
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Affiliation(s)
- Yi-Fan Sun
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University , Yantai , 264003 , P. R. China
| | - Qian-Qian Tang
- Pharmaceutical Analysis Department , Shandong Luye Pharmaceutical Co. Ltd. , Yantai , 264003 , P. R. China
| | - Yue Zhang
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University , Yantai , 264003 , P. R. China
| | - Fan Yang
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University , Yantai , 264003 , P. R. China
| | - Yong-Jun Liu
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University , Yantai , 264003 , P. R. China
| | - Wei Cong
- School of Pharmacy, The Key Laboratory of Prescription Effect and Clinical Evaluation of State Administration of Traditional Chinese Medicine of China, Binzhou Medical University , Yantai , 264003 , P. R. China
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35
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Xu Z, Zeng J, Cai M. An MCM-41-immobilized dichloro(pyridine-2-carboxylato)gold(III) complex: an efficient and recyclable catalyst for the annulation of anthranils and ynamides. Dalton Trans 2023; 52:806-817. [PMID: 36594393 DOI: 10.1039/d2dt03733e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A new mesoporous MCM-41-immobilized dichloro(pyridine-2-carboxylato)gold(III) complex [MCM-41-PicAuCl2] was synthesized via an addition reaction of a dichloro(3-hydroxypyridine-2-carboxylato)gold(III) complex to triethoxy(3-isocyanatopropyl)silane, followed by immobilization on MCM-41 and was characterized by different physico-chemical techniques. In the presence of 5 mol% of MCM-41-PicAuCl2, the annulation reaction between anthranils and ynamides proceeded smoothly under mild conditions to afford diverse 6- or 5-formylindoles with high atom economy and good to excellent yields. This new heterogenized gold(III) complex can be easily recovered through a simple filtration process and recycled more than seven times without any apparent loss of its catalytic efficiency.
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Affiliation(s)
- Zhaohui Xu
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education and College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| | - Jiajun Zeng
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education and College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
| | - Mingzhong Cai
- Key Lab of Fluorine and Silicon for Energy Materials and Chemistry of Ministry of Education and College of Chemistry & Chemical Engineering, Jiangxi Normal University, Nanchang 330022, P. R. China.
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36
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Chemoenzymatic Synthesis of Indole-Containing Acyloin Derivatives. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28010354. [PMID: 36615552 PMCID: PMC9822442 DOI: 10.3390/molecules28010354] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/25/2022] [Revised: 12/28/2022] [Accepted: 12/29/2022] [Indexed: 01/04/2023]
Abstract
Indole-containing acyloins are either key intermediates of many antimicrobial/antiviral natural products or building blocks in the synthesis of biologically active molecules. As such, access to structurally diverse indole-containing acyloins has attracted considerable attention. In this report, we present a pilot study of using biotransformation to provide acyloins that contain various indole substituents. The biotransformation system contains the tryptophan synthase standalone β-subunit variant, PfTrpB6, generated from directed evolution in the literature; a commercially available L-amino acid oxidase (LAAO); and the thiamine-diphosphate (ThDP)-dependent enzyme NzsH, encoded in the biosynthetic gene cluster (nzs) of the bacterial carbazole alkaloid natural product named neocarazostatin A. The utilization of the first two enzymes, the PfTrpB variant and LAAO, is designed to provide structurally diverse indole 3-pyruvate derivatives as donor substrates for NzsH-catalysed biotransformation to provide acyloin derivatives. Our results demonstrate that NzsH displays a considerable substrate profile toward donor substrates for production of acyloins with different indole ring systems, suggesting that NzsH could be further explored as a potential biocatalyst via directed evolution to improve the catalytic efficiency in the future.
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37
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Boron Trifluoride Etherate Promoted Regioselective 3-Acylation of Indoles with Anhydrides. Molecules 2022; 27:molecules27238281. [PMID: 36500373 PMCID: PMC9741063 DOI: 10.3390/molecules27238281] [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: 11/05/2022] [Revised: 11/22/2022] [Accepted: 11/23/2022] [Indexed: 11/29/2022] Open
Abstract
An efficient, high-yielding and scalable procedure for the regioselective 3-acylation of indoles with anhydrides promoted by boron trifluoride etherate under mild conditions was reported. This novel protocol provided a simple way to prepare 3-(benzofuran-2-yl) indole in three steps.
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38
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Yaragorla S, Arun D. Arylation and Aryne Insertion into C-Acylimines: A Simple, Flexible, and Divergent Synthesis of C2-Aryl Indoles. J Org Chem 2022; 87:14250-14263. [PMID: 36219251 DOI: 10.1021/acs.joc.2c01753] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
We reveal a direct strategy for the flexible synthesis of C2-aryl/heteroaryl indoles without transition metal catalysts. The synthesis involves a one-pot, four-component reaction of readily available starting materials to offer diversity around the indole moiety with a broad substrate scope and high yields. The reaction proceeds via the Friedel-Crafts C-arylation of C-acylimine formed in situ, followed by N-arylation with aryne, a formal [3+2] cycloaddition, and a subsequent aromatization cascade.
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Affiliation(s)
- Srinivasarao Yaragorla
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
| | - Doma Arun
- School of Chemistry, University of Hyderabad, P.O. Central University, Hyderabad 500046, India
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39
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Dong K, Li J, Li RP, Mao M, Liu J, Wang X, Tang S. One-Pot Sequential Synthesis of 3,3'- or 2,3'-Bis(indolyl)methanes by Using 1,3-Dithiane as the Methylene Source. J Org Chem 2022; 87:14930-14939. [PMID: 36259953 DOI: 10.1021/acs.joc.2c01844] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A simple and efficient method for structurally diverse symmetrical and unsymmetrical 3,3'- and 2,3'-bisindolylmethanes has been developed through a one-pot sequential reaction using 1,3-dithiane as the methylene source. The important AhR agonists ICZ and malassezin were synthesized with excellent efficiency by this straightforward approach.
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Affiliation(s)
- Kang Dong
- School of Pharmacy and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jia Li
- School of Pharmacy and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Rui-Peng Li
- School of Pharmacy and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Mingming Mao
- School of Pharmacy and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Jian Liu
- School of Pharmacy and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiaolei Wang
- School of Pharmacy and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
| | - Shouchu Tang
- School of Pharmacy and State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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40
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Athira M, Shanmugam P. BF3.OEt2 catalysed synthesis of diverse 9‑fluorenlidene appended indole-1-oxides and spiro[fluorene-9,10′-indeno[1,2-b]indol]-5′-yl) ethanones from 9-(phenylethynyl)-fluoren-9-ol and nitrosobenzene. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154218] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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41
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Ahmad T, Khan S, Ullah N. Recent Advances in the Catalytic Asymmetric Friedel-Crafts Reactions of Indoles. ACS OMEGA 2022; 7:35446-35485. [PMID: 36249392 PMCID: PMC9558610 DOI: 10.1021/acsomega.2c05022] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/06/2022] [Accepted: 09/23/2022] [Indexed: 06/16/2023]
Abstract
Functionalized chiral indole derivatives are privileged and versatile organic frameworks encountered in numerous pharmaceutically active agents and biologically active natural products. The catalytic asymmetric Friedel-Crafts reaction of indoles, catalyzed by chiral metal complexes or chiral organocatalysts, is one of the most powerful and atom-economical approaches to access optically active indole derivatives. Consequently, a wide range of electrophilic partners including α,β-unsaturated ketones, esters, amides, imines, β,γ-unsaturated α-keto- and α-ketiminoesters, ketimines, nitroalkenes, and many others have been successfully employed to achieve a plethora of functionalized chiral indole moieties. In particular, strategies for C-H functionalization in the phenyl of indoles require incorporation of a directing or blocking group in the phenyl or azole ring of indole. The discovery of chiral catalysts which can control enantiodiscrimination has gained a great deal of attention in recent years. This review will provide an updated account on the application of the asymmetric Friedel-Crafts reaction of indoles in the synthesis of diverse chiral indole derivatives, covering the timeframe from 2011 to today.
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Affiliation(s)
- Tauqir Ahmad
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
| | - Sardaraz Khan
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
| | - Nisar Ullah
- Chemistry
Department, King Fahd University of Petroleum
and Minerals, Dhahran 31261, Saudi Arabia
- The
Center for Refining & Advanced Chemicals, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
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42
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Wang X, Zeng H, Zhang W, Guo H, Jin T, Shi S, Jin X, Qu N, Liu L, Zhang L. Copper-catalyzed construction of ( Z)-benzo[ cd]indoles: stereoselective intramolecular trans-addition and S N-Ar reaction. Org Biomol Chem 2022; 20:7949-7955. [PMID: 36178274 DOI: 10.1039/d2ob01488b] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Substituted benzo[cd]indoles are one of the most attractive frameworks because of their wide range of biological and optical activities. Herein, a copper-catalyzed one-step synthesis of biologically important polysubstituted benzo[cd]indoles starting from 8-alkynyl-1-naphthylamine derivatives is reported. In this protocol, many substituents tolerated the reaction conditions and produced (Z)-benzo[cd]indoles in good yields. Preliminary mechanistic studies indicated that the reaction proceeds via a stereoselective intramolecular trans-addition and SN-Ar reaction with high selectivity and high yields. The synthesized polysubstituted (Z)-benzo[cd]indoles possess sulfonamide building blocks, which make them candidates for bioactive molecules.
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Affiliation(s)
- Xinyue Wang
- Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China. .,College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Heyang Zeng
- Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
| | - Wenli Zhang
- Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
| | - Haiyang Guo
- College of Biological, Chemical Sciences and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
| | - Tao Jin
- Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
| | - Senlei Shi
- Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
| | - Xiaoyuan Jin
- Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
| | - Na Qu
- Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
| | - Li Liu
- Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
| | - Lianpeng Zhang
- Yunnan Key Laboratory of Wood Adhesive and Glued Products, Southwest Forestry University, Kunming 650224, Yunnan, China.
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43
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Zhang J, Zhang B, He J, Shi H, Du Y. Divergent synthesis of 2-methylthioindole and 2-unsubstituted indole derivatives mediated by SOCl 2 and dimethyl/diethyl sulfoxides. Org Biomol Chem 2022; 20:7886-7890. [PMID: 36169012 DOI: 10.1039/d2ob01580c] [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 metal-free divergent synthesis of indole compounds dependent on a reagent via intramolecular C(sp2)-H amination was described. The reaction of 2-vinylanilines with DMSO/SOCl2 at 70 °C was found to give 2-thiomethylindoles, while replacing DMSO with diethyl sulfoxide afforded 2-unsubstituted indoles in a highly selective manner.
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Affiliation(s)
- Jingran Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Beibei Zhang
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Jiaxin He
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Haofeng Shi
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
| | - Yunfei Du
- School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China.
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44
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Catalytic synthesis of new pyrazolo [3,4-b] pyridine via a cooperative vinylogous anomeric-based oxidation. Sci Rep 2022; 12:14145. [PMID: 35986040 PMCID: PMC9391453 DOI: 10.1038/s41598-022-17879-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2022] [Accepted: 08/02/2022] [Indexed: 12/13/2022] Open
Abstract
AbstractIn this study, a novel nano-magnetic metal–organic frameworks based on Fe3O4 namely Fe3O4@MIL-101(Cr)-N(CH2PO3)2 was synthesized and fully characterized. The prepared sample was used as catalyst in the synthesis of pyrazolo [3,4-b] pyridines as convenient medicine by condensation reaction of aldehydes, 5-(1H-Indol-3-yl)- 2H-pyrazol-3-ylamine and 3-(cyanoacetyl)indole via a CVABO. The products were obtained with high yields at 100 °C and under solvent-free conditions.
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45
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Sapkota RR, Tak RK, Aryal V, Niroula D, Secosky NC, Dhungana RK, Giri R. Cu-Catalyzed Cyclization/Coupling of Alkenyl Aldimines with Arylzinc Reagents: Access to Indole-3-diarylmethanes. Org Lett 2022; 24:6213-6218. [PMID: 35969494 DOI: 10.1021/acs.orglett.2c02531] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
We report a Cu(II)-catalyzed cyclization/coupling of alkenyl aldimines with arylzinc reagents to create indole-3-diarylmethane derivatives (Sapkota et al. ChemRxiv 2022, DOI: 10.26434/chemrxiv-2022-d6qn). The current reaction provides a unified modular route from readily available starting materials to indole-3-diarylmethanes in which all three arene cores can be decorated with differential functional substitutions on demand. Since the cyclization/coupling of alkenyl aldimines is unknown to date, the current method widens the scope with regard to both the substrate and product diversity for this class of reaction.
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Affiliation(s)
- Rishi R Sapkota
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Raj Kumar Tak
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Vivek Aryal
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Doleshwar Niroula
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Nicholas C Secosky
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Roshan K Dhungana
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
| | - Ramesh Giri
- Department of Chemistry, The Pennsylvania State University, University Park, Pennsylvania 16802, United States
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46
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Diao H, Liu L, Wang J, Lin Y, Zhao X, Zeng H, Shi S, Gao W, Yang L, Du G, Zhang L. Cupric Halide‐Promoted Stereoselective Intramolecular cis‐Addition to Construct (Z)‐Chloro(Bromo)benzo[c,d]indoles. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200811] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Hanying Diao
- Southwest Forestry University Yunnan Key Laboratory of Wood Adhesive and Glued Products CHINA
| | - Li Liu
- Southwest Forestry University Yunnan Key Laboratory of Wood Adhesive and Glued Products CHINA
| | - Jin Wang
- Southwest Forestry University Yunnan Key Laboratory of Wood Adhesive and Glued Products CHINA
| | - Yanfei Lin
- Jiaxing University College of Biological, Chemical Sciences and Engineering CHINA
| | - Xiangyuan Zhao
- Southwest Forestry University Yunnan Key Laboratory of Wood Adhesive and Glued Products CHINA
| | - Heyang Zeng
- Southwest Forestry University Yunnan Key Laboratory of Wood Adhesive and Glued Products CHINA
| | - Senlei Shi
- Southwest Forestry University Yunnan Key Laboratory of Wood Adhesive and Glued Products CHINA
| | - Wei Gao
- Southwest Forestry University Yunnan Key Laboratory of Wood Adhesive and Glued Products CHINA
| | - Long Yang
- Southwest Forestry University Yunnan Key Laboratory of Wood Adhesive and Glued Products CHINA
| | - Guanben Du
- Southwest Forestry University Yunnan Key Laboratory of Wood Adhesive and Glued Products CHINA
| | - Lianpeng Zhang
- Jiaxing University Chemistry Jiahang Road 138 314001 Jiaxing CHINA
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47
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Duan X, Zheng N, Liu G, Li M, Wu Q, Sun X, Song W. Copper-Catalyzed One-Step Formation of Four C-N Bonds toward Polyfunctionalized Triazoles via Multicomponent Reaction. Org Lett 2022; 24:6006-6012. [PMID: 35930056 DOI: 10.1021/acs.orglett.2c02273] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel four-component reaction of alkynes, amines, azides, and 2H-azirines has been developed for the first time by the efficient formation of four C-N bonds in one step under mild conditions, rapidly preparing polyfunctionalized triazoles with molecular diversity involving three different intermediates of copper-acetylide, copper-allenylidene, and copper-vinyl nitrene. Propargylic ester is disclosed as a "three-in-one" building block possessing triplicate cycloaddition and nucleophilic and electrophilic properties, which could enable such a four-component transformation by high yields, broad substrate scope, and functionalization.
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Affiliation(s)
- Xuelun Duan
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Science, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Nan Zheng
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Science, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Gongbo Liu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Science, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Ming Li
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Science, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Qiming Wu
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Science, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Xinhao Sun
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Science, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
| | - Wangze Song
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Science, Department of Polymer Science & Materials, School of Chemical Engineering, Dalian University of Technology, Dalian 116024, P. R. China
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48
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Tyagi A, Khan J, Yadav N, Mahato R, Hazra CK. Catalyst-Switchable Divergent Synthesis of Bis(indolyl)alkanes and 3-Alkylated Indoles from Styrene Oxides. J Org Chem 2022; 87:10229-10240. [PMID: 35856651 DOI: 10.1021/acs.joc.2c01204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A novel and effective Brønsted acid-catalyzed chemoselective synthesis of bis(indolyl)alkanes and 3-alkyl indoles is reported. The selectivity of two significant indole derivatives is attained by allowing the same substrates to go through divergent reaction routes catalyzed by different catalysts. Furthermore, this mild approach is applicable to a wide range of substrates and has high efficacy in large-scale reactions. A plausible mechanism is provided based on the control experiments and spectroscopic studies.
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Affiliation(s)
- Aparna Tyagi
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Jabir Khan
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Naveen Yadav
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Rina Mahato
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
| | - Chinmoy Kumar Hazra
- Department of Chemistry, Indian Institute of Technology Delhi, Hauz Khas, New Delhi 110016, India
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49
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Zhu H, Chen L, Bai R, Gu Y. Acid‐Catalyzed Synthesis of Diverse Indol‐3‐yl‐Substituted Tetrahydropyridines via Three‐Component Reactions. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200394] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Hongmei Zhu
- Institute of Physical Chemistry and Industrial Catalysis CHINA
| | - Lei Chen
- Huazhong University of Science and Technology CHINA
| | - Rongxian Bai
- Huazhong University of Science and Technology CHINA
| | - Yanlong Gu
- Institute of Physical Chemistry and Industrial Catalysis CHINA
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50
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Abe T, Yamashiro T, Shimizu K, Sawada D. Indole Editing Enabled by HFIP-Mediated Ring-Switch Reactions of 3-Amino-2-Hydroxyindolines. Chemistry 2022; 28:e202201113. [PMID: 35438809 DOI: 10.1002/chem.202201113] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2022] [Indexed: 12/26/2022]
Abstract
This work reports the novel reactivity of hemiaminal as a precursor for indole editing at the multi-site. The HFIP-promoted indole editing of indoline hemiaminals affords 2-arylindoles through a ring-switch sequence. The key to success of this transformation is to use a cyclic hemiaminal as an α-amino aldehyde surrogate under transient tautomeric control. This transformation features mild reaction conditions and good yields with broad functional group tolerance. The utility of this transformation is presented through the one-pot protocol and the synthesis of isocryptolepine.
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Affiliation(s)
- Takumi Abe
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
| | - Toshiki Yamashiro
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
| | - Kaho Shimizu
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
| | - Daisuke Sawada
- Graduate School of Medicine, Dentistry and Pharmaceutical Sciences, Okayama University, 1-1-1 Tsushima-naka, Kita-ku, Okayama, 7008530, Japan
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