1
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Luo J, Zhao JX, He T, Liu P, Li CT. Phosphoric Acid Catalyzed N-Addition/ C-Addition Reaction of 3-Vinyl Indoles with Pyrazole/Pyrazolone to Construct Pyrazole-Substituted 3-(1-Heteroarylethyl)-indole Scaffolds. J Org Chem 2024; 89:6000-6015. [PMID: 38618901 DOI: 10.1021/acs.joc.3c02866] [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
Developing a highly efficient atom-economic method for the preparation of 3-(1-heteroarylethyl)-indole scaffolds is of significant value in pharmaceutical and agricultural chemistry. Herein, a phosphoric acid-catalyzed N-addition reaction of 3-vinyl indoles with pyrazoles and C-addition reaction of 3-vinyl indoles with pyrazolones were developed. A series of pyrazole-substituted 3-(1-heteroarylethyl)-indole scaffolds were synthesized in excellent yields (up to 99% yield) under mild reaction conditions. A reasonable reaction mechanism was proposed to explain the experimental results.
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Affiliation(s)
- Jie Luo
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, People's Republic of China
| | - Ji-Xing Zhao
- Analysis and Testing Center, Shihezi University, Xinjiang 832003, P. R. China
| | - Tao He
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, People's Republic of China
| | - Ping Liu
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, People's Republic of China
| | - Chun-Tian Li
- School of Chemistry and Chemical Engineering/State Key Laboratory Incubation Base for Green Processing of Chemical Engineering, Shihezi University, Shihezi 832003, Xinjiang, People's Republic of China
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2
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Singh G, Marupalli SS, Arockiaraj M, Rajeshkumar V. I 2-Cs 2CO 3 Mediated Intramolecular C2-Amination and Oxidative Rearrangement Cascade of C-3 Phenylthio Indoles: A Route to Synthesize Thiosulfonate-Embedded 2-Iminoindolin-3-ones. J Org Chem 2024; 89:5861-5870. [PMID: 38552213 DOI: 10.1021/acs.joc.4c00056] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/20/2024]
Abstract
An efficient, transition-metal-free protocol employing I2/Cs2CO3 for the synthesis of thiosulfonate containing 2-iminoindolin-3-ones motifs has been developed from C-3 phenylthio indoles. The reaction proceeded through intramolecular cyclization involving C-N bond formation, leading to the formation of indole-fused benzothiazines as a key intermediate. Remarkably, Cs2CO3 played a crucial role in the reaction as an oxygen source, enabling oxidative rearrangement with [1,4]-sulfonyl migration to furnish the final products with the formation of multiple functional groups such as C═O, C═N, and S-SO2.
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Affiliation(s)
- Gargi Singh
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda - 506004, Telangana, India
| | - 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
| | - Venkatachalam Rajeshkumar
- Organic Synthesis & Catalysis Lab, Department of Chemistry, National Institute of Technology Warangal, Hanumakonda - 506004, Telangana, India
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3
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Parvin T. Multicomponent Reactions Using C,N-Binucleophilic Nature of Aminopyrazoles: Construction of Pyrazole-Fused Heterocycles. Top Curr Chem (Cham) 2023; 381:19. [PMID: 37237061 DOI: 10.1007/s41061-023-00427-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/08/2023] [Accepted: 04/22/2023] [Indexed: 05/28/2023]
Abstract
Synthesis of pyrazole-fused heterocycles has gained considerable attention in recent years due to their wide applications in medicinal chemistry. Aminopyrazoles are versatile building blocks for the synthesis of pyrazole-fused heterocycles by multicomponent reactions. Due to the presence of multiple reaction sites, they have fascinating chemical reactivity. Thus, they have been extensively used in multicomponent reactions for the construction of pyrazole-fused heterocycles. Although few review articles on the preparation and applications of aminopyrazoles are known in the literature, to date there is no dedicated review article on the construction of pyrazole-fused heterocycles exploring the reactivity of amino pyrazoles as C,N-binucleophiles in multicomponent reactions. Considering this, herein the multicomponent reactions for the construction of pyrazole-fused heterocycles exploring C,N-binucleophilic nature of amino pyrazoles have been reported.
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Affiliation(s)
- Tasneem Parvin
- Department of Chemistry, National Institute of Technology Patna, Ashok Rajpath, Patna, 800005, India.
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4
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Banda BP, Medishetti N, Nanubolu JB, Atmakur K. One-pot domino synthesis of five- and six-membered fused dihydropyridines promoted by PPh 3-NBS in aqueous medium. Org Biomol Chem 2023; 21:4434-4439. [PMID: 37183547 DOI: 10.1039/d3ob00472d] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
A facile one-pot synthesis of five- and six-membered fused dihydropyridines such as chromenodihydropyridines, pyrazolodihydropyridines and isoxazolopyridines was accomplished for the first time by employing PPh3-NBS via a formal [3 + 2 + 1] cycloaddition of 1,3-bisnucleophiles (i.e., 2-aminochromone, 4-aminochromone, 5-aminopyrazole and 5-aminoisoxazole), β-enaminones and aldehydes in aqueous medium. The present approach involves a Michael type addition followed by intramolecular cyclization leading to the formation of two new C-C bonds and one C-N bond. High compatibility and excellent yields are the advantages of this protocol.
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Affiliation(s)
- Bhanu Prasad Banda
- Fluoro & Agrochemicals Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500 007, India.
| | - Nagaraju Medishetti
- Fluoro & Agrochemicals Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500 007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
| | - Jagadeesh Babu Nanubolu
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
- Laboratory of X-ray Crystallography, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad 500 007, India
| | - Krishnaiah Atmakur
- Fluoro & Agrochemicals Department, CSIR-Indian Institute of Chemical Technology, Tarnaka, Hyderabad, 500 007, India.
- Academy of Scientific and Innovative Research (AcSIR), Ghaziabad, Uttar Pradesh, 201002, India
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5
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Wang Z, Liu Z, Sun A, Wang KK. Recent advances of three‐component reactions of simple indoles. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200250] [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]
Affiliation(s)
- Zhanyong Wang
- Xinxiang University chemistry and chemical engineering Xinxiang 453000 Xinxiang CHINA
| | | | - Aili Sun
- Xinxiang University School of Pharmacy CHINA
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6
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Datta K, Mitra B, Sharma BS, Ghosh P. One‐pot Three‐component Solvent‐free Tandem Annulations for Synthesis of Tetrazolo[1,2‐
a
]pyrimidine and [1,2,4]triazolo[1,5‐
a
]pyrimidine. ChemistrySelect 2022. [DOI: 10.1002/slct.202103602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Kumaresh Datta
- Department of Chemistry University of North Bengal Dist. Darjeeling West Bengal India
| | - Bijeta Mitra
- Department of Chemistry University of North Bengal Dist. Darjeeling West Bengal India
| | - Biswajit Shil Sharma
- Department of Chemistry University of North Bengal Dist. Darjeeling West Bengal India
| | - Pranab Ghosh
- Department of Chemistry University of North Bengal Dist. Darjeeling West Bengal India
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7
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Rastogi GK, Deka B, Deb ML, Baruah PK. Iodine‐DMSO‐promoted Oxygenation of Indoles: Synthesis of Isatin and Isoindigo. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Gaurav K. Rastogi
- Department of Applied Sciences, GUIST Gauhati University Guwahati 781014 Assam India
- Department of Applied Organic Chemistry, CSIR-NEIST Jorhat 785006 Assam India
| | - Bhaskar Deka
- Department of Applied Sciences, GUIST Gauhati University Guwahati 781014 Assam India
| | - Mohit L. Deb
- Department of Applied Sciences, GUIST Gauhati University Guwahati 781014 Assam India
| | - Pranjal K. Baruah
- Department of Applied Sciences, GUIST Gauhati University Guwahati 781014 Assam India
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8
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Deb ML, Saikia BS, Borpatra PJ, Baruah PK. α-C–H functionalization of tertiary amines catalyzed/promoted by molecular iodine/derivatives. NEW J CHEM 2021. [DOI: 10.1039/d1nj02695j] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
A recent review on the α-C–H functionalization of tertiary amines using low-cost and benign I2 or its derivatives.
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Affiliation(s)
- Mohit L. Deb
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati 781014
- India
| | - B. Shriya Saikia
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati 781014
- India
| | - Paran J. Borpatra
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati 781014
- India
| | - Pranjal K. Baruah
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati 781014
- India
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9
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Banerjee A, Kundu S, Bhattacharyya A, Sahu S, Maji MS. Benzannulation strategies for the synthesis of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines. Org Chem Front 2021. [DOI: 10.1039/d1qo00092f] [Citation(s) in RCA: 22] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
This review presents a critical and authoritative analysis of several exciting benzannulation approaches developed in the past decade for the construction of carbazoles, indolocarbazoles, benzocarbazoles, and carbolines.
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Affiliation(s)
- Ankush Banerjee
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Kundu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Arya Bhattacharyya
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Samrat Sahu
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
| | - Modhu Sudan Maji
- Department of Chemistry
- Indian Institute of Technology Kharagpur
- Kharagpur 721302
- India
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10
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Reactions of naphthalen-2-ol Mannich bases with β-aminoacrylonitriles and methyl 3-morpholinoacrylate. Chem Heterocycl Compd (N Y) 2020. [DOI: 10.1007/s10593-020-02695-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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11
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Recent Advances on the C2-Functionalization of Indole via Umpolung. Top Curr Chem (Cham) 2020; 378:22. [DOI: 10.1007/s41061-020-0287-7] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Accepted: 01/28/2020] [Indexed: 01/23/2023]
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12
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Depa N, Erothu H. One‐Pot Three‐Component Synthesis of 3‐Aminoalkyl Indoles Catalyzed by Molecular Iodine. ChemistrySelect 2019. [DOI: 10.1002/slct.201902832] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Navaneetha Depa
- Department of ChemistryKoneruLakshmaiah Education Foundation (KLEF), Vaddeswaram Guntur-522 502 Andhra Pradesh India
| | - Harikrishna Erothu
- Centre for Advanced Energy Studies (CAES)Department of ChemistryKoneru Lakshmaiah Education Foundation (KLEF), Vaddeswaram Guntur-522 502 Andhra Pradesh India
- Department of ChemistryKoneruLakshmaiah Education Foundation (KLEF), Vaddeswaram Guntur-522 502 Andhra Pradesh India
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13
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Gambouz K, Driowya M, Loubidi M, Tber Z, Allouchi H, El Kazzouli S, Akssira M, Guillaumet G. Unusual rearrangement of imidazo[1,5- a]imidazoles and imidazo[1,2- b]pyrazoles into imidazo[1,5- a]pyrimidines and pyrazolo[1,5- a]pyrimidines. RSC Adv 2019; 9:29051-29055. [PMID: 35528450 PMCID: PMC9071803 DOI: 10.1039/c9ra04609g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2019] [Accepted: 09/10/2019] [Indexed: 01/19/2023] Open
Abstract
A multicomponent reaction giving easy and cheap access to a variety of bicyclic 5,5-fused hetero-rings has been developed.
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Affiliation(s)
- Khadija Gambouz
- Laboratoire de Chimie Physique et Chimie Bioorganique
- URAC 22 FSTM
- Université Hassan II – Casablanca
- Morocco
- Euromed Research Center
| | - Mohsine Driowya
- Institut de Chimie Organique et Analytique
- Université d’Orléans
- UMR CNRS 7311
- 45067 Orléans Cedex 2
- France
| | - Mohammed Loubidi
- Laboratoire de Chimie Physique et Chimie Bioorganique
- URAC 22 FSTM
- Université Hassan II – Casablanca
- Morocco
- Institut de Chimie Organique et Analytique
| | - Zahira Tber
- Laboratoire de Chimie Physique et Chimie Bioorganique
- URAC 22 FSTM
- Université Hassan II – Casablanca
- Morocco
- Institut de Chimie Organique et Analytique
| | - Hassan Allouchi
- Laboratoire de Chimie Physique
- équipe EA 7502 SIMBA
- Faculté de Pharmacie
- Université de Tours
- 37200 Tours
| | - Saïd El Kazzouli
- Euromed Research Center
- Euromed Faculty of Enginnering
- Euromed University of Fes (UEMF)
- 30000 Fès
- Morocco
| | - Mohamed Akssira
- Laboratoire de Chimie Physique et Chimie Bioorganique
- URAC 22 FSTM
- Université Hassan II – Casablanca
- Morocco
| | - Gérald Guillaumet
- Institut de Chimie Organique et Analytique
- Université d’Orléans
- UMR CNRS 7311
- 45067 Orléans Cedex 2
- France
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14
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Borpatra PJ, Deka B, Deb ML, Baruah PK. Recent advances in intramolecular C–O/C–N/C–S bond formationviaC–H functionalization. Org Chem Front 2019. [DOI: 10.1039/c9qo00863b] [Citation(s) in RCA: 67] [Impact Index Per Article: 13.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This review presents the construction of C–X bonds (X = O/N/S) by using intramolecular C–H functionalization for the synthesis of heterocyclic compounds.
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Affiliation(s)
- Paran J. Borpatra
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati-781014
- India
| | - Bhaskar Deka
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati-781014
- India
| | - Mohit L. Deb
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati-781014
- India
| | - Pranjal K. Baruah
- Department of Applied Sciences
- GUIST
- Gauhati University
- Guwahati-781014
- India
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