1
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Pan X, Dong B, Wu Y, Gao B, Song C. Synthesis of Functionalized 4-Hydroxy Carbazoles and Carbazole Alkaloids via Ring Expansion of Indole Cyclopentanone. J Org Chem 2024; 89:8845-8850. [PMID: 38814829 DOI: 10.1021/acs.joc.4c00730] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/01/2024]
Abstract
The exploration of a ring expansion reaction from indole cyclopentanone to generate a range of diversely functionalized 4-hydroxyl carbazole frameworks, representing the core structure of numerous carbazole alkaloids, has been conducted under mild reaction conditions. This approach exhibits broad functional group tolerance and moderate to good yields. The practical applicability of this strategy has been demonstrated through the concise syntheses of carbazomycins A, D, and G.
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Affiliation(s)
- Xiaolong Pan
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Boyang Dong
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Yangang Wu
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Beiling Gao
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
| | - Chuanjun Song
- Green Catalysis Center and College of Chemistry, Zhengzhou University, Zhengzhou 450001, Henan, P. R. China
- Pingyuan Laboratory, Zhengzhou University, Zhengzhou 450001, P. R. China
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2
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Allen LAT, Natho P. Trends in carbazole synthesis - an update (2013-2023). Org Biomol Chem 2023; 21:8956-8974. [PMID: 37906471 DOI: 10.1039/d3ob01605f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2023]
Abstract
The interest of scientists in the carbazole core has risen steadily over the last 30 years, particularly over the last decade given its presence in several active pharmaceutical ingredients, functional materials and a wide range of biologically active natural products. The continuous development of more efficient, more (regio-)selective and "greener" methodologies to access the carbazole core is thus imperative. This review compares and evaluates synthetic strategies towards the carbazole core that have been reported since 2013, with a focus on their applicability towards the total synthesis of carbazole-containing natural products.
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Affiliation(s)
- Lewis A T Allen
- CheMastery, Paper Yard, 11a Quebec Way, London, SE16 7LG, UK
| | - Philipp Natho
- FLAME-Lab, Flow Chemistry and Microreactor Technology Laboratory, Department of Pharmacy-Drug Sciences, University of Bari "A. Moro", Via E. Orabona 4, 70125 Bari, Italy
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3
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Ito K, Sakai S, Yoshida K. Synthesis of [1]Benzothieno[2,3- b][1]benzothiophenes from 3-Arylbenzo[ b]thiophenes through Iodine-Mediated Sulfur Insertion Reaction. J Org Chem 2023; 88:14797-14802. [PMID: 37788823 DOI: 10.1021/acs.joc.3c01618] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/05/2023]
Abstract
The reaction of 3-arylbenzo[b]thiophenes and elemental sulfur to obtain [1]benzothieno[2,3-b][1]benzothiophenes (BTBTs) is reported. The addition of molecular iodine is essential for the reaction. In previous reactions that used 1,1-diarylethylenes as the starting material, side products that were difficult to separate were generated. The present reaction does not produce such side products and is therefore advantageous for obtaining BTBTs in high yield and purity.
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4
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Yuan S, Guerra Faura G, Areheart HE, Peulen NE, France S. Lewis Acid-Catalyzed 2,3-Dihydrofuran Acetal Ring-Opening Benzannulations toward Functionalized 1-Hydroxycarbazoles. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27238344. [PMID: 36500437 PMCID: PMC9737012 DOI: 10.3390/molecules27238344] [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: 11/01/2022] [Revised: 11/22/2022] [Accepted: 11/24/2022] [Indexed: 12/02/2022]
Abstract
The development of a Lewis acid-catalyzed, intramolecular ring-opening benzannulation of 5-(indolyl)2,3-dihydrofuran acetals is described. The resulting 1-hydroxycarbazole-2-carboxylates are formed in up to 90% yield in 1 h. The dihydrofuran acetals are readily accessed from the reactions of enol ethers and α-diazo-β-indolyl-β-ketoesters. To highlight the method's synthetic utility, a formal total synthesis of murrayafoline A, a bioactive carbazole-containing natural product, was undertaken.
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Affiliation(s)
- Shaoren Yuan
- Georgia Institute of Technology, School of Chemistry and Biochemistry, Atlanta, GA 30332, USA
| | - Gabriel Guerra Faura
- Georgia Institute of Technology, School of Chemistry and Biochemistry, Atlanta, GA 30332, USA
| | - Hailey E. Areheart
- Georgia Institute of Technology, School of Chemistry and Biochemistry, Atlanta, GA 30332, USA
| | - Natalie E. Peulen
- Georgia Institute of Technology, School of Chemistry and Biochemistry, Atlanta, GA 30332, USA
| | - Stefan France
- Georgia Institute of Technology, School of Chemistry and Biochemistry, Atlanta, GA 30332, USA
- Petit Institute for Bioengineering and Bioscience, Atlanta, GA 30332, USA
- Correspondence:
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5
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Sihag M, Soni R, Rani N, Kinger M, Kumar Aneja D. Recent Synthetic Applications of Hypervalent Iodine Reagents. A Review in Three Installments: Installment I. ORG PREP PROCED INT 2022. [DOI: 10.1080/00304948.2022.2113964] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/10/2022]
Affiliation(s)
- Monika Sihag
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Rinku Soni
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Neha Rani
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Mayank Kinger
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
| | - Deepak Kumar Aneja
- Department of Chemistry, Chaudhary Bansi Lal University, Bhiwani, Haryana, India
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6
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Witkowska M, Maciejewska N, Ryczkowska M, Olszewski M, Bagiński M, Makowiec S. From tryptophan to novel mitochondria-disruptive agent, synthesis and biological evaluation of 1,2,3,6-tetrasubstituted carbazoles. Eur J Med Chem 2022; 238:114453. [DOI: 10.1016/j.ejmech.2022.114453] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2021] [Revised: 04/27/2022] [Accepted: 05/07/2022] [Indexed: 11/30/2022]
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7
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Photochemical generation and characterization of the 5-endo-10,11-dihydrodibenzoazepine nitrenium ion. Photochem Photobiol Sci 2022; 21:1907-1914. [DOI: 10.1007/s43630-022-00267-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2021] [Accepted: 07/04/2022] [Indexed: 10/17/2022]
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8
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Ravindar L, Hasbullah SA, Hassan NI, Qin HL. Cross‐Coupling of C‐H and N‐H Bonds: a Hydrogen Evolution Strategy for the Construction of C‐N Bonds. European J Org Chem 2022. [DOI: 10.1002/ejoc.202200596] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lekkala Ravindar
- Universiti Kebangsaan Malaysia Fakulti Teknologi dan Sains Maklumat Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Siti Aishah Hasbullah
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Nurul Izzaty Hassan
- Universiti Kebangsaan Malaysia Fakulti Sains dan Teknologi Chemical Sciences Faculty of Science & Technology 43600 Bandar Baru Bangi MALAYSIA
| | - Hua-Li Qin
- Wuhan University of Technology School of Chemistry 430070 Hubei CHINA
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9
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Iwata T, Kawano R, Fukami T, Shindo M. Retro‐Friedel‐Crafts‐Type Acidic Ring‐Opening of Triptycenes: A New Synthetic Approach to Acenes. Chemistry 2022; 28:e202104160. [DOI: 10.1002/chem.202104160] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/19/2021] [Indexed: 11/06/2022]
Affiliation(s)
- Takayuki Iwata
- Institute for Materials Chemistry and Engineering Kyushu University 6-1 Kasuga-koen Kasuga 816-8580 Japan
| | - Ryusei Kawano
- Interdisciplinary Graduate School of Engineering Sciences Kyushu University 6-1 Kasuga-koen Kasuga 816-8580 Japan
| | - Takuto Fukami
- Interdisciplinary Graduate School of Engineering Sciences Kyushu University 6-1 Kasuga-koen Kasuga 816-8580 Japan
| | - Mitsuru Shindo
- Institute for Materials Chemistry and Engineering Kyushu University 6-1 Kasuga-koen Kasuga 816-8580 Japan
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10
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Yang YO, Wang X, Xiao J, Li Y, Sun F, Du Y. Formation of Carbon-Nitrogen Bond Mediated by Hypervalent Iodine Reagents Under Metal-free Conditions. CURR ORG CHEM 2021. [DOI: 10.2174/1385272822999201117154919] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
In the past several decades, hypervalent iodine chemistry has witnessed prosperous
development as hypervalent iodine reagents have been widely used in various organic transformations.
Specifically, hypervalent iodine reagents have been vastly used in various bondforming
reactions. Among these oxidative coupling reactions, the reactions involving the
formation of C-N bond have been extensively explored to construct various heterocyclic
skeletons and synthesize various useful building blocks. This review article is to summarize
all the transformations in which carbon-nitrogen bond formation occurred by using hypervalent
iodine reagents under metal-free conditions.
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Affiliation(s)
- Yaxin O. Yang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Xi Wang
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Jiaxi Xiao
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Yadong Li
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
| | - Fengxia Sun
- College of Chemical and Pharmaceutical Engineering, Hebei University of Science and Technology; Hebei Research Center of Pharmaceutical and Chemical Engineering, Shijiazhuang 050018, China
| | - Yunfei Du
- Tianjin Key Laboratory for Modern Drug Delivery & High-Efficiency, School of Pharmaceutical Science and Technology, Tianjin University, Tianjin 300072, China
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11
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Zhang P, Li B, Niu L, Wang L, Zhang G, Jia X, Zhang G, Liu S, Ma L, Gao W, Qin D, Chen J. Scalable Electrochemical Transition‐Metal‐Free Dehydrogenative Cross‐Coupling Amination Enabled Alkaloid Clausines Synthesis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000228] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Pan Zhang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Baoying Li
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Liwei Niu
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Ling Wang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Guofeng Zhang
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Xiaofei Jia
- Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Qingdao 266042 People's Republic of China
| | - Guoying Zhang
- Shandong Key Laboratory of Biochemical Analysis, Key Laboratory of Optic-electric Sensing and Analytical Chemistry for Life Science, MOE, College of Chemistry and Molecular EngineeringQingdao University of Science and Technology Qingdao 266042 People's Republic of China
| | - Siyuan Liu
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Li Ma
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Wei Gao
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Dawei Qin
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
| | - Jianbin Chen
- Shandong Provincial Key Laboratory of Molecular Engineering, School of Chemistry and Pharmaceutical EngineeringQilu University of Technology (Shandong Academy of Sciences) Jinan 250353 People's Republic of China
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12
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Liu X, Sheng H, Zhou Y, Song Q. Palladium-catalyzed C–H bond activation for the assembly of N-aryl carbazoles with aromatic amines as nitrogen sources. Chem Commun (Camb) 2020; 56:1665-1668. [DOI: 10.1039/c9cc09493h] [Citation(s) in RCA: 16] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient and efficient palladium-catalyzed C–H bond activation for the assembly of N-aryl carbazole is reported, in which two C–N bonds were formed under one set of conditions.
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Affiliation(s)
- Xiaobing Liu
- Institute of Next Generation Matter Transformation
- College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Heyun Sheng
- Institute of Next Generation Matter Transformation
- College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
| | - Yao Zhou
- College of Chemistry and Chemical Engineering
- Hubei Normal University
- Huangshi 435002
- P. R. China
| | - Qiuling Song
- Institute of Next Generation Matter Transformation
- College of Materials Science & Engineering and College of Chemical Engineering at Huaqiao University
- Xiamen
- P. R. China
- Fujian University Key Laboratory of Molecule Synthesis and Function Discovery
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13
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Abstract
Herein, we report a C-N coupling reaction via antiaromatic endocyclic nitrenium ions. The nitrenium ion intermediate was generated by a combination of iodine(III) reagent PhI(OCOCF3)2 and the N-H center of benzimidazole units at ambient laboratory conditions. Metal-free synthesis of benzimidazole-fused phenanthridine derivatives was achieved in good to excellent yields.
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Affiliation(s)
- Shyamal Kanti Bera
- School of Chemical Sciences , National Institute of Science Education and Research (NISER), HBNI , PO Bhimpur-Padanpur, Via Jatni , District Khurda, Bhubaneswar , Odisha 752050 , India
| | - Md Toufique Alam
- School of Chemical Sciences , National Institute of Science Education and Research (NISER), HBNI , PO Bhimpur-Padanpur, Via Jatni , District Khurda, Bhubaneswar , Odisha 752050 , India
| | - Prasenjit Mal
- School of Chemical Sciences , National Institute of Science Education and Research (NISER), HBNI , PO Bhimpur-Padanpur, Via Jatni , District Khurda, Bhubaneswar , Odisha 752050 , India
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14
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Affiliation(s)
- Saikat Maiti
- School of Chemical SciencesNational Institute of Science Education and Research (NISER)HBNIBhubaneswarPO Bhimpur-Padanpur Via Jatni District Khurda Odisha 752050 India
| | - Md Toufique Alam
- School of Chemical SciencesNational Institute of Science Education and Research (NISER)HBNIBhubaneswarPO Bhimpur-Padanpur Via Jatni District Khurda Odisha 752050 India
| | - Ankita Bal
- School of Chemical SciencesNational Institute of Science Education and Research (NISER)HBNIBhubaneswarPO Bhimpur-Padanpur Via Jatni District Khurda Odisha 752050 India
| | - Prasenjit Mal
- School of Chemical SciencesNational Institute of Science Education and Research (NISER)HBNIBhubaneswarPO Bhimpur-Padanpur Via Jatni District Khurda Odisha 752050 India
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15
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Bose A, Sau S, Mal P. Intramolecular C(sp3
)-H Imination towards Benzimidazoles Using Tetrabutylammonium Iodide and t
BuOOH. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900732] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Anima Bose
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; PO Bhimpur-Padanpur, Via Jatni 752050 Bhubaneswar District Khurda, Odisha India
| | - Sudip Sau
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; PO Bhimpur-Padanpur, Via Jatni 752050 Bhubaneswar District Khurda, Odisha India
| | - Prasenjit Mal
- School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI; PO Bhimpur-Padanpur, Via Jatni 752050 Bhubaneswar District Khurda, Odisha India
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16
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Mahato S, Santra S, Zyryanov GV, Majee A. Metal-Free Amidation Reactions of Terminal Alkynes with Benzenesulfonamide. J Org Chem 2019; 84:3176-3183. [DOI: 10.1021/acs.joc.8b03065] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Sachinta Mahato
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Sougata Santra
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute, Ural Federal University, 19 Mira Street, 620002 Yekaterinburg, Russian Federation
| | - Grigory V. Zyryanov
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute, Ural Federal University, 19 Mira Street, 620002 Yekaterinburg, Russian Federation
- I. Ya. Postovskiy Institute of Organic Synthesis, Ural Division of the Russian Academy of Sciences, 22 South Kovalevskoy Street, 620219 Yekaterinburg, Russian Federation
| | - Adinath Majee
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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17
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Choudhuri K, Maiti S, Mal P. Iodine(III) Enabled Dehydrogenative Aryl C−S Coupling by in situ Generated Sulfenium Ion. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201801510] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Affiliation(s)
- Khokan Choudhuri
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar; PO Bhimpur-Padanpur; Via Jatni, District Khurda Odisha 752050 India
| | - Saikat Maiti
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar; PO Bhimpur-Padanpur; Via Jatni, District Khurda Odisha 752050 India
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar; PO Bhimpur-Padanpur; Via Jatni, District Khurda Odisha 752050 India
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18
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Reddy Kandimalla S, Prathima Parvathaneni S, Sabitha G, Subba Reddy BV. Recent Advances in Intramolecular Metal-Free Oxidative C-H Bond Aminations Using Hypervalent Iodine(III) Reagents. European J Org Chem 2019. [DOI: 10.1002/ejoc.201801469] [Citation(s) in RCA: 55] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Satheeshkumar Reddy Kandimalla
- Fluoro & Agrochemicals Division; CSIR-Indian Institute of Chemical Technology; 500-007 Hyderabad India
- Natural Products Chemistry Division; CSIR-Indian Institute of Chemical Technology; Hyderabad-500 007 India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
| | - Sai Prathima Parvathaneni
- Fluoro & Agrochemicals Division; CSIR-Indian Institute of Chemical Technology; 500-007 Hyderabad India
- Department of Chemistry; University of Texas at Austin; 78712 Austin, Texas United States
| | - Gowravaram Sabitha
- Natural Products Chemistry Division; CSIR-Indian Institute of Chemical Technology; Hyderabad-500 007 India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
| | - B. V. Subba Reddy
- Fluoro & Agrochemicals Division; CSIR-Indian Institute of Chemical Technology; 500-007 Hyderabad India
- Academy of Scientific and Innovative Research; 110025 New Delhi India
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19
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Pramanik M, Choudhuri K, Mal P. N
-Iodosuccinimide as Bifunctional Reagent in (E
)-Selective C(sp2
)−H Sulfonylation of Styrenes. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800644] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Milan Pramanik
- Milan Pramanik, Khokan Choudhuri, Dr. Prasenjit Mal, School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda; Odisha 752050 India
| | - Khokan Choudhuri
- Milan Pramanik, Khokan Choudhuri, Dr. Prasenjit Mal, School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda; Odisha 752050 India
| | - Prasenjit Mal
- Milan Pramanik, Khokan Choudhuri, Dr. Prasenjit Mal, School of Chemical Sciences; National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda; Odisha 752050 India
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20
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Singsardar M, Mondal S, Sarkar R, Hajra A. (Diacetoxy)iodobenzene-Mediated Regioselective Imidation of Imidazoheterocycles with N-Fluorobenzenesulfonimide. ACS OMEGA 2018; 3:12505-12512. [PMID: 31457983 PMCID: PMC6645145 DOI: 10.1021/acsomega.8b02088] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2018] [Accepted: 09/25/2018] [Indexed: 06/10/2023]
Abstract
Metal-free (diacetoxy)iodobenzene-mediated regioselective imidation of imidazoheterocycles using commercially available N-fluorobenzenesulfonimide as an imidating reagent has been developed. This protocol exhibits broad substrate scope with good to excellent yields of the imidated imidazopyridines under mild conditions in short reaction times. The present protocol also represents an efficient way to access the imidated derivatives of imidazo[2,1-b]thiazole, benzo[d]imidazo-[2,1-b]thiazole, indoles, and indolizines. A radical mechanistic pathway has been proposed for the present protocol.
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21
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Alam MT, Maiti S, Mal P. The mechanochemical synthesis of quinazolin-4(3 H)-ones by controlling the reactivity of IBX. Beilstein J Org Chem 2018; 14:2396-2403. [PMID: 30254705 PMCID: PMC6142747 DOI: 10.3762/bjoc.14.216] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2018] [Accepted: 08/24/2018] [Indexed: 01/31/2023] Open
Abstract
Performing any synthesis using several arylamines and hypervalent iodine(V) reagents by direct mixing is unrealistic because of the high exothermic reaction or explosion. Herein we demonstrate, when anilines were substituted with an amide group at the ortho-position, successful chemical reactions could be performed due to intramolecular control. At maximum contact of the reacting substances, i.e., under solvent-free mechanochemical conditions, 2-aminobenzamides, aryl-, alkylaldehydes and the iodine(V) reagent o-iodoxybenzoic acid (IBX) led to substituted quinazolin-4(3H)-one derivatives in fair yields.
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Affiliation(s)
- Md Toufique Alam
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India; Tel: +919439613856
| | - Saikat Maiti
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India; Tel: +919439613856
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India; Tel: +919439613856
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22
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Choudhuri K, Pramanik M, Mandal A, Mal P. S−H⋅⋅⋅π Driven Anti-Markovnikov Thiol-Yne Click Reaction. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800381] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Khokan Choudhuri
- School of Chemical Sciences; National Institute of Science Education and Research (NISER); HBNI; Bhubaneswar; PO Bhimpur-Padanpur; Via Jatni, District Khurda Odisha 752050 India
| | - Milan Pramanik
- School of Chemical Sciences; National Institute of Science Education and Research (NISER); HBNI; Bhubaneswar; PO Bhimpur-Padanpur; Via Jatni, District Khurda Odisha 752050 India
| | - Arkalekha Mandal
- School of Chemical Sciences; National Institute of Science Education and Research (NISER); HBNI; Bhubaneswar; PO Bhimpur-Padanpur; Via Jatni, District Khurda Odisha 752050 India
| | - Prasenjit Mal
- School of Chemical Sciences; National Institute of Science Education and Research (NISER); HBNI; Bhubaneswar; PO Bhimpur-Padanpur; Via Jatni, District Khurda Odisha 752050 India
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23
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Bal A, Maiti S, Mal P. Iodine(III)-Enabled Distal C–H Functionalization of Biarylsulfonanilides. J Org Chem 2018; 83:11278-11287. [DOI: 10.1021/acs.joc.8b01857] [Citation(s) in RCA: 26] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Affiliation(s)
- Ankita Bal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Saikat Maiti
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
| | - Prasenjit Mal
- School of Chemical Sciences, National Institute of Science Education and Research (NISER), HBNI, Bhubaneswar, PO Bhimpur-Padanpur, Via Jatni, District Khurda, Odisha 752050, India
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