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Arockiaraj M, Rajeshkumar V. Iodine-promoted sequential C(sp 3)-H oxidation and cyclization of aryl methyl ketones with 2-(2-aminophenyl)quinazolin-4(3 H)-ones. Org Biomol Chem 2024; 22:7052-7058. [PMID: 39145634 DOI: 10.1039/d4ob01146e] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/16/2024]
Abstract
An I2-promoted, metal-free protocol has been developed for the one-pot synthesis of 6-aroyl-5,6-dihydro-8H-quinazolino[4,3-b]quinazolin-8-ones from readily accessible substrates. This reaction involves the in situ sp3 C-H oxidation of aryl methyl ketones to phenylglyoxal, followed by imine formation and intramolecular nucleophilic addition, resulting in the formation of two new C-N bonds. Furthermore, the method is applicable to a wide range of aryl methyl ketones, including heterocycles and drug-derived substrates, yielding the desired products with yields ranging from 62% to 93%. Additionally, the practical utility of this approach was demonstrated through gram-scale synthesis.
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Affiliation(s)
- Mariyaraj Arockiaraj
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda - 506004, Telangana, India.
| | - Venkatachalam Rajeshkumar
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda - 506004, Telangana, India.
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2
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Punna SK, Arockiaraj M, Rajeshkumar V. I 2-catalyzed tandem sp 3 C-H oxidation and annulation of aryl methyl ketones with amidoximes for the synthesis of 5-aroyl-1,2,4-oxadiazoles. Org Biomol Chem 2024. [PMID: 39189408 DOI: 10.1039/d4ob01221f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/28/2024]
Abstract
A metal-free, iodine-catalyzed protocol has been developed for constructing biologically significant 5-aroyl 1,2,4-oxadiazole scaffolds using aryl methyl ketones and amidoximes. The strategy produces structurally diverse 5-aroyl 1,2,4-oxadiazoles in good to excellent yields, with a broad substrate scope that includes drug derived substrates. The reaction proceeds through iodine/DMSO-mediated oxidation of aryl methyl ketones, followed by imine formation and subsequent cyclization to yield the desired products. Additionally, this protocol has successfully produced the carbonyl analogs of ataluren and tioxazafen and has facilitated some intriguing late-stage transformations.
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Affiliation(s)
- Shiva Kumar Punna
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda-506004, Telangana, India.
| | - Mariyaraj Arockiaraj
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda-506004, Telangana, India.
| | - Venkatachalam Rajeshkumar
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda-506004, Telangana, India.
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Marupalli SS, Arockiaraj M, Singh G, Rajeshkumar V. Iodine-Catalyzed Synthesis of Benzo-β-carbolines through Desulfurative Cyclization of 2-(1 H-Indol-3-ylsulfanyl)-phenylamines with Aryl Methyl Ketones. J Org Chem 2023; 88:12783-12791. [PMID: 37584251 DOI: 10.1021/acs.joc.3c00657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/17/2023]
Abstract
A novel transition metal-free strategy for the synthesis of benzene-fused β-carboline scaffolds has been developed. This protocol offers a rapid and direct pathway to access the benzene fused β-carboline from 2-(1H-indol-3-ylsulfanyl)-phenylamines and aryl methyl ketones using an efficient catalytic system of I2/DMSO. The present mild protocol proceeds through the sequential reactions of Kornblum oxidation, Pictet-Spengler cyclization, and desulfurization to afford the desired products in excellent yields up to 99%. Moreover, this method has a wide range of substrate tolerance and is operationally simple and applicable in gram-scale synthesis.
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Affiliation(s)
- Sasi Sree Marupalli
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
| | - Mariyaraj Arockiaraj
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
| | - Gargi Singh
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
| | - Venkatachalam Rajeshkumar
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda 506004, Telangana, India
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Li J, Liu C, Zhao Z, Wang X, Chen D, Yue K, Chen S, Jin M, Shan Y. Halogen cation-promoted and solvent-regulated electrophilic cyclization for the regioselective synthesis of 3-haloquinolines and 3-halospirocyclohexadienones. Org Biomol Chem 2023; 21:2440-2446. [PMID: 36876461 DOI: 10.1039/d3ob00168g] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/03/2023]
Abstract
A novel approach for the production of halogen cations through the reaction of halogens with silver ions is described in this paper. On this basis, the regioselective synthesis of 3-haloquinolines and 3-halospirocyclohexadienones is realized through solvent regulation. The gram-scale reaction and the compatibility of complex substrates demonstrate the synthetic potential of this protocol, which will be an appealing strategy in organic synthesis.
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Affiliation(s)
- Jianming Li
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Chengxiao Liu
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Zihan Zhao
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Xin Wang
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Dianpeng Chen
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Kaiyuan Yue
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Sihan Chen
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Ming Jin
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
| | - Yingying Shan
- The Key Laboratory of Life-Organic Analysis and Key Laboratory of Pharmaceutical Intermediates and Analysis of Natural Medicine, School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu 273165, Shandong, China.
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Zubkov FI, Kouznetsov VV. Traveling across Life Sciences with Acetophenone-A Simple Ketone That Has Special Multipurpose Missions. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28010370. [PMID: 36615564 PMCID: PMC9823374 DOI: 10.3390/molecules28010370] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Revised: 12/18/2022] [Accepted: 12/28/2022] [Indexed: 01/04/2023]
Abstract
Each metabolite, regardless of its molecular simplicity or complexity, has a mission or function in the organism biosynthesizing it. In this review, the biological, allelochemical, and chemical properties of acetophenone, as a metabolite involved in multiple interactions with various (mi-cro)organisms, are discussed. Further, the details of its biogenesis and chemical synthesis are provided, and the possibility of its application in different areas of life sciences, i.e., the status quo of acetophenone and its simple substituted analogs, is examined. In particular, natural and synthetic simple acetophenone derivatives are analyzed as promising agrochemicals and useful scaffolds for drug research and development.
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Affiliation(s)
- Fedor I. Zubkov
- Department of Organic Chemistry, Рeoples’ Friendship University of Russia (RUDN University), 6 Miklukho-Maklaya Street, 117198 Moscow, Russia
- Correspondence: (F.I.Z.); or (V.V.K.); Tel.: +57-7-634-4000 (ext. 1243) (V.V.K.)
| | - Vladimir V. Kouznetsov
- Laboratorio de Química Orgánica y Biomolecular, Escuela de Química, Universidad Industrial de Santander, Cl. 9 # Cra 27, A.A., Bucaramanga 680006, Colombia
- Correspondence: (F.I.Z.); or (V.V.K.); Tel.: +57-7-634-4000 (ext. 1243) (V.V.K.)
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He C, Fan X, Ji M, Sun X, Zhang W, Zhu X, Sun Z, Chu W. Visible light induced palladium catalyzed C H hydroxylation of nitrogen-containing heterocyclic aromatics in the presence of H2O2. Tetrahedron Lett 2022. [DOI: 10.1016/j.tetlet.2022.154225] [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]
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Li JX, Xia YQ, Cheng LM, Feng X. One-pot hydrothermal synthesis of a mononuclear cobalt(II) complex and an organic-inorganic supramolecular adduct: Structures, properties and hirshfeld surface analyses. J SOLID STATE CHEM 2022. [DOI: 10.1016/j.jssc.2022.123271] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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8
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Geng F, Wu S, Gan X, Hou W, Dong J, Zhou Y. TEMPO mediated oxidative annulation of aryl methyl ketones with amines/ammonium acetate for imidazole synthesis. Org Biomol Chem 2022; 20:5416-5422. [PMID: 35748805 DOI: 10.1039/d2ob00828a] [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 facile synthesis of 1H-imidazoles by direct oxidative annulation of aryl methyl ketones and primary amines has been developed in the presence of TEMPO under weakly acidic conditions. By replacing amines with ammonium acetate, 2H-imidazole skeletons were achieved for the first time from ketones. Substrates containing various functional groups, such as alkyl, aryl, naphthyl, halogen (F, Cl, Br, I), nitro, trifluoromethyl, sulfonyl ester, furyl, thienyl, and pyridyl groups, were readily transformed into the desired products. The application potential of this method was verified by the scale-up synthesis and Sonogashira coupling functionalization of imidazoles. Mechanistically, the α-TEMPO-enamine adduct may serve as the key reaction intermediate.
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Affiliation(s)
- Furong Geng
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China. .,School of Physics and Chemistry, Hunan First Normal University, Changsha 410205, China.
| | - Shaofeng Wu
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Xinyang Gan
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Wenjuan Hou
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
| | - Jianyu Dong
- School of Physics and Chemistry, Hunan First Normal University, Changsha 410205, China.
| | - Yongbo Zhou
- Advanced Catalytic Engineering Research Center of the Ministry of Education, College of Chemistry and Chemical Engineering, Hunan University, Changsha 410082, China.
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