1
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Singh A, Nath M. Cascade Radical Pathway-Enabled Nitrogen-Sulfur Coupling: Access to Isothiazolo[3,4- b]- meso-tetraarylporphyrins. J Org Chem 2024; 89:8610-8619. [PMID: 38819088 DOI: 10.1021/acs.joc.4c00548] [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
A catalyst-free radical-mediated domino strategy for the construction of isothiazolo[3,4-b]-meso-tetraarylporphyrins was developed. During the course of the reaction, 2-benzothioylamino-3-thioformyl-meso-tetraarylporphyrins generated in situ after the addition of Lawesson's reagent to a solution of 2-benzoylamino-3-formyl-meso-tetraarylporphyrins in refluxing toluene underwent a homolytic cleavage to produce nitrogen-sulfur radicals. Subsequently, the formation of a new N-S bond through an intramolecular cascade radical coupling provided direct access to novel β-isothiazole-fused porphyrins.
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Affiliation(s)
- Abhijeet Singh
- Department of Chemistry, Faculty of Science, University of Delhi, Delhi 110 007, India
| | - Mahendra Nath
- Department of Chemistry, Faculty of Science, University of Delhi, Delhi 110 007, India
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2
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Orvoš J, Pančík F, Fischer R. Facile One‐Step Oxidation of
N
‐Boc‐Protected Diarylhydrazines to Diaryldiazenes with (Diacetoxyiodo)benzene under Mild Conditions. European J Org Chem 2023. [DOI: 10.1002/ejoc.202300049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/12/2023]
Affiliation(s)
- Jakub Orvoš
- Institute of Organic Chemistry Catalysis and Petrochemistry Slovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
| | - Filip Pančík
- Institute of Chemistry Slovak Academy of Sciences Dúbravská cesta 9 845 38 Bratislava Slovak Republic
| | - Róbert Fischer
- Institute of Organic Chemistry Catalysis and Petrochemistry Slovak University of Technology in Bratislava Radlinského 9 812 37 Bratislava Slovak Republic
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3
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Vittal S, Mujahid Alam M, Hussien M, Amanullah M, Pisal PM, Ravi V. Applications of Phenyliodine(III)diacetate in C−H Functionalization and Hetero‐Hetero Bond Formations: A Septennial Update. ChemistrySelect 2023. [DOI: 10.1002/slct.202204240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Seema Vittal
- Department of Chemistry RGUKT Basar Mudhole 504107, Nirmal, Telangana India
| | - Mohammed Mujahid Alam
- Department of Chemistry, College of Science King Khalid University, PO Box 9004 Abha 61413 Saudi Arabia
| | - Mohamed Hussien
- Department of Chemistry, College of Science King Khalid University, PO Box 9004 Abha 61413 Saudi Arabia
- Pesticide Formulation Department Central Agricultural Pesticide Laboratory, ARC, Dokki Giza 12618 Egypt
| | - Mohammed Amanullah
- Department of Clinical Biochemistry, College Medicine King Khalid University, PO Box 9004 Abha 61413 Saudi Arabia
| | - Parshuram M. Pisal
- School of Chemical Science Punyashlok Ahilyadevi Holkar Solapur University Solapur 413255, Maharashtra India
| | - Varala Ravi
- Scrips Pharma, Mallapur Hyderabad 500076, Telangana India
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4
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Phenylbenzohydrazides Obtained from Isatoic Anhydride Present Anti-Inflammatory Activity In Vivo and In Vitro. Biomolecules 2022; 12:biom12121901. [PMID: 36551329 PMCID: PMC9776041 DOI: 10.3390/biom12121901] [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: 10/27/2022] [Revised: 11/15/2022] [Accepted: 11/24/2022] [Indexed: 12/23/2022] Open
Abstract
BACKGROUND Despite the existence of a wide variety of anti-inflammatory drugs, the vast majority are classified as steroidal or non-steroidal. Both classes present a variety of side effects that limit usage. Thus, the search for new molecules with anti-inflammatory potential is still important. METHODS Five phenylbenzohydrazides were synthetized and evaluated in pre-clinical models of acute inflammation in vivo and in vitro. RESULTS The new substances (INL-06, -07, -10, and -11), as well as AISCT, significantly reduced cell migration induced by carrageenan. It was also observed that all INLs inhibited protein extravasation as well as cytokines (IL-6, IL-1β, and TNF-α) and nitric oxide (NO) production. The INL-11 was demonstrated to be the most potent, since the inhibition observed in several parameters was significant even when compared with dexamethasone. In vitro INLs also reduced cytokines and NO production and inducible nitric oxide (iNOS) enzyme activity. The INL-11 was the most effective in reducing cell migration in vitro. CONCLUSIONS Our data suggest that these substances are suitable for further development into a new series of compounds that could lead to new hits and future drug prototypes for anti-inflammatory conditions.
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5
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Patel G, Maurya RK, Tyagi S, Kant R, Yadav PP. PIDA‐Mediated Intramolecular N‐N Bond Formation to Access 2‐Aminoindazoles and 2,2′‐Biindazoles**. ChemistrySelect 2022. [DOI: 10.1002/slct.202201112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Girija Patel
- Medicinal and Process Chemistry CSIR-Central Drug Research Institute Lucknow 226031 India
- Academy of Scientific & Innovative Research Ghaziabad 201002 India
| | - Rahul K. Maurya
- Medicinal and Process Chemistry CSIR-Central Drug Research Institute Lucknow 226031 India
| | - Shaifali Tyagi
- Medicinal and Process Chemistry CSIR-Central Drug Research Institute Lucknow 226031 India
- Academy of Scientific & Innovative Research Ghaziabad 201002 India
| | - Ruchir Kant
- Molecular and Structural Biology CSIR-Central Drug Research Institute Lucknow 226031 India
| | - Prem P. Yadav
- Medicinal and Process Chemistry CSIR-Central Drug Research Institute Lucknow 226031 India
- Academy of Scientific & Innovative Research Ghaziabad 201002 India
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6
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Synthesis of benzisothiazoles by a three-component reaction using elemental sulfur and ammonium as heteroatom components under transition metal-free conditions. GREEN SYNTHESIS AND CATALYSIS 2022. [DOI: 10.1016/j.gresc.2022.03.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
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7
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Garia A, Grover J, Jain N. Metal‐Free Synthesis of Anthranils by PhIO Mediated Heterocyclization of
ortho
‐Carbonyl Anilines. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100756] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Alankrita Garia
- Department of Chemistry Indian Institute of Technology New Delhi 110016 India
| | - Jatin Grover
- Department of Chemistry Indian Institute of Technology New Delhi 110016 India
| | - Nidhi Jain
- Department of Chemistry Indian Institute of Technology New Delhi 110016 India
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8
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Majeed K, Zhou F, Zhang Q. Metal-free tandem reactions of 2-iodoaryl ynones with sodium azide for the synthesis of benzoisoxazole containing 1,2,3-triazoles. Org Biomol Chem 2021; 19:3707-3716. [PMID: 33908434 DOI: 10.1039/d0ob02608e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A metal-free approach has been developed for the synthesis of benzo[c]isoxazole (anthranils) containing 1,2,3-triazoles. The reaction proceeded efficiently through a [3 + 2] azide-alkyne cycloaddition, SNAr azidation and denitrogenative cyclization sequence. The metal-free protocol enabled effective construction of one N-O and three C-N bonds in one pot. In addition, the synthetic utility of the current methodology was further demonstrated by late stage modification of the obtained products.
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Affiliation(s)
- Kashif Majeed
- Xi'an Key Laboratory of Functional Organic Porous Materials, Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China.
| | - Fengtao Zhou
- School of Pharmacy, Jinan University, Guangzhou, Guangdong 510632, P.R. China
| | - Qiuyu Zhang
- Xi'an Key Laboratory of Functional Organic Porous Materials, Department of Applied Chemistry, School of Chemistry and Chemical Engineering, Northwestern Polytechnical University, Xi'an, Shaanxi 710072, PR China.
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9
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Antony P M, Balaji GL, Iniyavan P, Ila H. Reaction of 1,3-Bis(het)arylmonothio-1,3-diketones with Sodium Azide: Regioselective Synthesis of 3,5-Bis(het)arylisoxazoles via Intramolecular N–O Bond Formation. J Org Chem 2020; 85:15422-15436. [DOI: 10.1021/acs.joc.0c02216] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Mary Antony P
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Gantala L. Balaji
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Pethaperumal Iniyavan
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
| | - Hiriyakkanavar Ila
- New Chemistry Unit, Jawaharlal Nehru Centre for Advanced Scientific Research, Jakkur, Bangalore 560064, India
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10
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Li L, Chen Q, Xu HH, Zhang XH, Zhang XG. DBU-Promoted Demethoxylative Thioannulation of Alkynyl Oxime Ethers with Sulfur for the Synthesis of Bisisothiazole-4-yl Disulfides. J Org Chem 2020; 85:10083-10090. [DOI: 10.1021/acs.joc.0c01334] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ling Li
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Qian Chen
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Hong-Hui Xu
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xiao-Hong Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
| | - Xing-Guo Zhang
- College of Chemistry and Materials Engineering, Wenzhou University, Wenzhou 325035, China
- Guangxi Key Laboratory of Calcium Carbonate Resources Comprehensive Utilization, Hezhou University, Hezhou 542899, China
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11
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Patel OPS, Jaspal S, Shinde VN, Nandwana NK, Rangan K, Kumar A. Phenyliodine(III) Diacetate-Mediated 1,2-ipso-Migration in Mannich Bases of Imidazo[1,2-a]pyridines: Preparation of N-Acetoxymethyl/Alkoxymethyl-N-arylimidazo[1,2-a]pyridine-3-amines. J Org Chem 2020; 85:7309-7321. [DOI: 10.1021/acs.joc.0c00674] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Affiliation(s)
- Om P. S. Patel
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Sonam Jaspal
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Vikki N. Shinde
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Nitesh K. Nandwana
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Hyderabad, Telangana 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, Pilani, Rajasthan 333031, India
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12
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Chen JY, Selvaraju M, Lin YT, Dhole S, Lin CY, Sun CM. Molecular Iodine-Promoted [3 + 2] Oxidative Cyclization for the Synthesis of Heteroarene-Fused [1,2,4] Thiadiazoles/Selenadiazoles. J Org Chem 2020; 85:5570-5579. [PMID: 32249566 DOI: 10.1021/acs.joc.0c00421] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Abstract
Two new classes of heteroarene-fused [1,2,4]thiadiazole and [1,2,4]selenadiazole are synthesized through the iodine-mediated [3 + 2] oxidative cyclization of 2-aminoheteroarenes and isothiocyanates/isoselenocyanates. This oxidative [3 + 2] annulation strategy is highly regiospecific to proceed a selective C-N bond formation at the endo-nitrogen of 2-aminoheteroarenes followed by an intramolecular oxidative N-S/N-Se bond formation. It is the first example of an I2-mediated oxidative nitrogen-selenium (N-Se) bond formation.
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Affiliation(s)
- Jin-Yu Chen
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Manikandan Selvaraju
- Department of Medicinal Chemistry, University of Kansas, Lawrence, Kansas 66045, United States
| | - Yen-Tzu Lin
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Sandip Dhole
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Chih-Yu Lin
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan
| | - Chung-Ming Sun
- Department of Applied Chemistry, National Chiao Tung University, 1001 Ta-Hsueh Road, Hsinchu 300-10, Taiwan.,Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, 100, Shih-Chuan 1st Road, Kaohsiung 807-08, Taiwan
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13
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Bal A, Maiti S, Mal P. Strategies to Control Hypervalent Iodine – Primary Amine Reactions. Chem Asian J 2020; 15:624-635. [DOI: 10.1002/asia.201901683] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2019] [Revised: 01/07/2020] [Indexed: 11/08/2022]
Affiliation(s)
- Ankita Bal
- School of Chemical SciencesNational Institute of Science Education and Research (NISER), HBNI, Bhubaneswar PO Bhimpur-Padanpur, Via Jatni, District Khurda Odisha 752050 India
| | - Saikat Maiti
- School of Chemical SciencesNational Institute of Science Education and Research (NISER), HBNI, Bhubaneswar PO Bhimpur-Padanpur, Via Jatni, District Khurda Odisha 752050 India
| | - Prasenjit Mal
- School of Chemical SciencesNational Institute of Science Education and Research (NISER), HBNI, Bhubaneswar PO Bhimpur-Padanpur, Via Jatni, District Khurda Odisha 752050 India
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14
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Singh P, Kaur N, Banerjee P. Regioselective Brønsted Acid-Catalyzed Annulation of Cyclopropane Aldehydes with N'-Aryl Anthranil Hydrazides: Domino Construction of Tetrahydropyrrolo[1,2- a]quinazolin-5(1 H)ones. J Org Chem 2020; 85:3393-3406. [PMID: 31958951 DOI: 10.1021/acs.joc.9b03170] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly regioselective synthesis of tetrahydropyrrolo[1,2-a]quinazolin-5(1H)one derivatives was achieved by reacting cyclopropane aldehydes with N'-aryl anthranil hydrazides in the presence of p-toluene sulfonic acid (PTSA). The transformation involves domino imine formation and intramolecular cyclization to form 2-arylcyclopropyl-2,3-dihydroquinolin-4(1H)-one, followed by nucleophilic ring opening of the cyclopropyl ring to form desired tetrahydropyrrolo[1,2-a]quinazolin-5(1H)one in good to excellent yield with complete regioselectivity. This protocol tolerates a great variety of functional groups and thus provides a simple and step-efficient method for pyrroloquinazolinone synthesis.
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Affiliation(s)
- Priyanka Singh
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab 140001, India
| | - Navpreet Kaur
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab 140001, India
| | - Prabal Banerjee
- Department of Chemistry, Indian Institute of Technology Ropar, Nangal Road, Rupnagar, Punjab 140001, India
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15
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Nagaraju T, Radha Krishna P. Transition-metal-free PhI(OAc)2-mediated oxidative S S and C N bond formation: Regioselective synthesis of 3H-1,2,4-dithiazol-3-imines. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2019.151424] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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16
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De Oliveira Silva A, McQuade J, Szostak M. Recent Advances in the Synthesis and Reactivity of Isothiazoles. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900072] [Citation(s) in RCA: 41] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - James McQuade
- Department of Chemistry Rutgers University 73 Warren Street Newark NJ 07102 USA
| | - Michal Szostak
- College of Chemistry and Chemical Engineering and Key Laboratory of Auxiliary Chemistry and Technology for Chemical Industry Ministry of Education Shaanxi University of Science and Technology Xi'an 710021 People's Republic of China
- Department of Chemistry Rutgers University 73 Warren Street Newark NJ 07102 USA
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17
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Patel OPS, Nandwana NK, Sah AK, Kumar A. Metal-free synthesis of aminomethylated imidazoheterocycles: dual role of tert-butyl hydroperoxide as both an oxidant and a methylene source. Org Biomol Chem 2019; 16:8620-8628. [PMID: 30379182 DOI: 10.1039/c8ob02432d] [Citation(s) in RCA: 23] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A novel and efficient aminomethylation approach has been developed for the regioselective functionalization of imidazoheterocycles under metal-free conditions. A wide range of imidazoheterocycles and 2/4-aminoazaheterocycles successfully provided corresponding aminomethylated imidazoheterocycles in moderate to excellent (33-80%) yields. The isotopic labelling study suggested that TBHP played a dual role as both an oxidant and a methylene source in this transformation. The developed protocol follows a radical pathway which is supported by radical trapping experiments.
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Affiliation(s)
- Om P S Patel
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Pilani Campus, 333031, Rajasthan, India.
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18
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Patel OPS, Dhiman S, Khan S, Shinde VN, Jaspal S, Srivathsa MR, Jha PN, Kumar A. A straightforward TBHP-mediated synthesis of 2-amidobenzoic acids from 2-arylindoles and their antimicrobial activity. Org Biomol Chem 2019; 17:5962-5970. [DOI: 10.1039/c9ob00797k] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Synthesis of 2-amidobenzoic acids has been achieved through TBHP-mediated oxidative ring opening of 2-arylindoles. The synthesized compounds have been evaluated for their antimicrobial activity.
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Affiliation(s)
| | - Shiv Dhiman
- Department of Chemistry
- BITS Pilani
- Pilani Campus
- India
| | - Shahid Khan
- Department of Biological Sciences
- BITS Pilani
- Pilani Campus
- India
| | | | - Sonam Jaspal
- Department of Chemistry
- BITS Pilani
- Pilani Campus
- India
| | | | - Prabhat N. Jha
- Department of Biological Sciences
- BITS Pilani
- Pilani Campus
- India
| | - Anil Kumar
- Department of Chemistry
- BITS Pilani
- Pilani Campus
- India
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19
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Yuan J, Rao CB, Liang Y, Zhang R, Zhang Q, Hou L, Dong D. Copper‐Catalyzed Regioselective Oxidative Cycloamidation of
α
‐[(
β
‐Dimethylamino)propenoyl]‐Alkylamides: Synthetic Route to Substituted Pyrrolidine‐2,4‐diones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801237] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jingwen Yuan
- Key Laboratory of High Performance Synthetic Rubber and its Composites, Changchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 People's Republic of China
- University of the Chinese Academy of Sciences Beijing 100049 People's Republic of China
| | - Chitturi Bhujanga Rao
- Key Laboratory of High Performance Synthetic Rubber and its Composites, Changchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 People's Republic of China
| | - Yongjiu Liang
- Key Laboratory of High Performance Synthetic Rubber and its Composites, Changchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 People's Republic of China
| | - Rui Zhang
- Key Laboratory of High Performance Synthetic Rubber and its Composites, Changchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 People's Republic of China
| | - Qian Zhang
- Key Laboratory of High Performance Synthetic Rubber and its Composites, Changchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 People's Republic of China
| | - Liman Hou
- Key Laboratory of High Performance Synthetic Rubber and its Composites, Changchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 People's Republic of China
| | - Dewen Dong
- Key Laboratory of High Performance Synthetic Rubber and its Composites, Changchun Institute of Applied ChemistryChinese Academy of Sciences Changchun 130022 People's Republic of China
- University of the Chinese Academy of Sciences Beijing 100049 People's Republic of China
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20
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Li C, Yuan J, Zhang Q, Bhujanga Rao C, Zhang R, Zhao Y, Deng B, Dong D. Oxidative Cyclization of β-Aminoacrylamides Mediated by PhIO: Chemoselective Synthesis of Isoxazoles and 2H-Azirines. J Org Chem 2018; 83:14999-15008. [DOI: 10.1021/acs.joc.8b02132] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Chaoran Li
- Key Laboratory of Preparation and Application of Environmental Friendly Materials of the Ministry of Education, Jilin Normal University, Changchun 130103, China
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Jingwen Yuan
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Qian Zhang
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Chitturi Bhujanga Rao
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Rui Zhang
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Yanning Zhao
- Key Laboratory of Preparation and Application of Environmental Friendly Materials of the Ministry of Education, Jilin Normal University, Changchun 130103, China
| | - Bicheng Deng
- Key Laboratory of Preparation and Application of Environmental Friendly Materials of the Ministry of Education, Jilin Normal University, Changchun 130103, China
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
| | - Dewen Dong
- Key Laboratory of Preparation and Application of Environmental Friendly Materials of the Ministry of Education, Jilin Normal University, Changchun 130103, China
- CAS Key Laboratory of High-Performance Synthetic Rubber and its Composite Materials, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022, China
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21
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Mulina OM, Ilovaisky AI, Terent'ev AO. Oxidative Coupling with S-N Bond Formation. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800838] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Olga M. Mulina
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky Prospekt 47 119991 Moscow Russian Federation
| | - Alexey I. Ilovaisky
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky Prospekt 47 119991 Moscow Russian Federation
| | - Alexander O. Terent'ev
- N. D. Zelinsky Institute of Organic Chemistry; Russian Academy of Sciences; Leninsky Prospekt 47 119991 Moscow Russian Federation
- D. I. Mendeleev University of Chemical Technology of Russia; 9 Miusskaya square 125047 Moscow Russian Federation
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22
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Tumula N, Palakodety RK, Balasubramanian S, Nakka M. Hypervalent Iodine(III)-Mediated Solvent-Free, Regioselective Synthesis of 3,4-Disubstituted 5-Imino-1,2,4-thiadiazoles and 2-Aminobenzo[d
]thiazoles. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201800353] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Nagaraju Tumula
- Organic and Biomolecular Chemistry Division; CSIR-Indian Institute of Chemical Technology; Hyderabad- 500007 India
- Academy of Scientific and Innovative Research (AcSIR); New Delhi 110025 India
| | - Radha Krishna Palakodety
- Organic and Biomolecular Chemistry Division; CSIR-Indian Institute of Chemical Technology; Hyderabad- 500007 India
| | - Sridhar Balasubramanian
- Center for X-ray Crystallography; CSIR-Indian Institute of Chemical Technology; Hyderabad- 500007 India
| | - Mangarao Nakka
- Organic and Biomolecular Chemistry Division; CSIR-Indian Institute of Chemical Technology; Hyderabad- 500007 India
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23
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Zhu R, Liu Z, Chen J, Xiong X, Wang Y, Huang L, Bai J, Dang Y, Huang J. Preparation of Thioanisole Biscarbanion and C-H Lithiation/Annulation Reactions for the Access of Five-Membered Heterocycles. Org Lett 2018; 20:3161-3165. [PMID: 29791164 DOI: 10.1021/acs.orglett.8b00850] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The synthesis, isolation, and X-ray structure of a thioanisole-based trilithium complex are reported. On the basis of the double-lithiation strategy, two novel synthetic methodologies have been developed under mild reaction conditions (room temperature): (1) reactions of lithiated thioanisoles with nitriles give benzoisothiazoles via a [3 + 2]-type of approach with two new bond formations and (2) formation of benzothiophenes from thioanisoles and amides through a [4 + 1] pattern forming 4 new chemical bonds.
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Affiliation(s)
- Ranran Zhu
- School of Pharmaceutical Science and Technology , Tianjin University , 92 Weijin Road , Nankai District, Tianjin 300072 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China.,Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency , Tianjin 300072 , China
| | - Zheyuan Liu
- Department of Chemistry, School of Science , Tianjin University , Tianjin 300072 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China
| | - Jie Chen
- School of Pharmaceutical Science and Technology , Tianjin University , 92 Weijin Road , Nankai District, Tianjin 300072 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China.,Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency , Tianjin 300072 , China
| | - Xiaoyu Xiong
- School of Pharmaceutical Science and Technology , Tianjin University , 92 Weijin Road , Nankai District, Tianjin 300072 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China.,Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency , Tianjin 300072 , China
| | - Yuntao Wang
- School of Pharmaceutical Science and Technology , Tianjin University , 92 Weijin Road , Nankai District, Tianjin 300072 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China.,Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency , Tianjin 300072 , China
| | - Lin Huang
- School of Pharmaceutical Science and Technology , Tianjin University , 92 Weijin Road , Nankai District, Tianjin 300072 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China.,Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency , Tianjin 300072 , China
| | - Jinshan Bai
- School of Pharmaceutical Science and Technology , Tianjin University , 92 Weijin Road , Nankai District, Tianjin 300072 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China.,Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency , Tianjin 300072 , China
| | - Yanfeng Dang
- Department of Chemistry, School of Science , Tianjin University , Tianjin 300072 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China
| | - Jianhui Huang
- School of Pharmaceutical Science and Technology , Tianjin University , 92 Weijin Road , Nankai District, Tianjin 300072 , China.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin 300072 , China.,Tianjin Key Laboratory for Modern Drug Delivery and High-Efficiency , Tianjin 300072 , China
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24
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Petran A, Hădade ND, Filip C, Filip X, Bende A, Popa A, Liebscher J. Poly[3,4‐dihydroxybenzhydrazide]: A Polydopamine Analogue? MACROMOL CHEM PHYS 2018. [DOI: 10.1002/macp.201700564] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Anca Petran
- National Institute of Research and Development for Isotopic and Molecular Technologies Donat Str. 67‐103 RO‐400293 Cluj‐Napoca Romania
| | - Niculina D. Hădade
- Centre of Supramolecular Organic and Organometallic Chemistry (CCSOOM)Department of ChemistryFaculty of Chemistry and Chemical EngineeringBabes‚ Bolyai University 11 Arany Janos Str. Cluj‐Napoca 400028 Romania
| | - Claudiu Filip
- National Institute of Research and Development for Isotopic and Molecular Technologies Donat Str. 67‐103 RO‐400293 Cluj‐Napoca Romania
| | - Xenia Filip
- National Institute of Research and Development for Isotopic and Molecular Technologies Donat Str. 67‐103 RO‐400293 Cluj‐Napoca Romania
| | - Attila Bende
- National Institute of Research and Development for Isotopic and Molecular Technologies Donat Str. 67‐103 RO‐400293 Cluj‐Napoca Romania
| | - Adriana Popa
- National Institute of Research and Development for Isotopic and Molecular Technologies Donat Str. 67‐103 RO‐400293 Cluj‐Napoca Romania
| | - Jürgen Liebscher
- National Institute of Research and Development for Isotopic and Molecular Technologies Donat Str. 67‐103 RO‐400293 Cluj‐Napoca Romania
- Department of ChemistryHumboldt‐University Berlin Brook‐Taylor‐Str. 2 12489 Berlin Germany
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25
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Ziyaei Halimehjani A, Klepetářová B, Beier P. Synthesis of novel dithiocarbamates and xanthates using dialkyl azodicarboxylates: S N bond formation. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.02.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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26
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Maurya RK, Patel OPS, Anand D, Yadav PP. Substrate selective synthesis of indole, tetrahydroquinoline and quinoline derivatives via intramolecular addition of hydrazones and imines. Org Chem Front 2018. [DOI: 10.1039/c7qo01115f] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A transition-metal-free, substrate selective synthesis of 2,3-diaryl indoles, 4-hydrazono-tetrahydroquinolines and substituted quinolines has been developed.
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Affiliation(s)
- Rahul K. Maurya
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Om P. S. Patel
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Devireddy Anand
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
| | - Prem P. Yadav
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow
- India
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27
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Zhu JS, Son JH, Teuthorn AP, Haddadin MJ, Kurth MJ, Tantillo DJ. Diverting Reactive Intermediates Toward Unusual Chemistry: Unexpected Anthranil Products from Davis-Beirut Reaction. J Org Chem 2017; 82:10875-10882. [PMID: 28922917 DOI: 10.1021/acs.joc.7b01521] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The discovery of a new variation on the Davis-Beirut reaction is described in which an atypical heterocyclic framework (the anthranil or benzo[c]isoxazole framework) is formed as the result of diversion of a key reactive intermediate away from its expected reactivity-a potentially general approach to reaction design and development. Experimental and computational support for the proposed mechanism and origins of altered reactivity are described.
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Affiliation(s)
- Jie S Zhu
- Department of Chemistry, University of California, Davis , 1 Shields Ave., Davis, California 95616, United States
| | - Jung-Ho Son
- Department of Chemistry, University of California, Davis , 1 Shields Ave., Davis, California 95616, United States
| | - Andrew P Teuthorn
- Department of Chemistry, University of California, Davis , 1 Shields Ave., Davis, California 95616, United States
| | - Makhluf J Haddadin
- Department of Chemistry, American University of Beirut , Beirut 1107 2020, Lebanon
| | - Mark J Kurth
- Department of Chemistry, University of California, Davis , 1 Shields Ave., Davis, California 95616, United States
| | - Dean J Tantillo
- Department of Chemistry, University of California, Davis , 1 Shields Ave., Davis, California 95616, United States
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28
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Wang B, Meng Y, Zhou Y, Ren L, Wu J, Yu W, Chang J. Synthesis of 5-Amino and 3,5-Diamino Substituted 1,2,4-Thiadiazoles by I2-Mediated Oxidative N–S Bond Formation. J Org Chem 2017; 82:5898-5903. [DOI: 10.1021/acs.joc.7b00814] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Bingnan Wang
- College of Chemistry
and
Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001, P. R. China
| | - Yinggao Meng
- College of Chemistry
and
Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001, P. R. China
| | - Yiming Zhou
- College of Chemistry
and
Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001, P. R. China
| | - Linning Ren
- College of Chemistry
and
Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001, P. R. China
| | - Jie Wu
- College of Chemistry
and
Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001, P. R. China
| | - Wenquan Yu
- College of Chemistry
and
Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001, P. R. China
| | - Junbiao Chang
- College of Chemistry
and
Molecular Engineering, Zhengzhou University, Zhengzhou, Henan Province 450001, P. R. China
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29
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Yu TQ, Hou YS, Jiang Y, Xu WX, Shi T, Wu X, Zhang JC, He D, Wang Z. Potassium bromide catalyzed N S bond formation via oxidative dehydrogenation. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.03.065] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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30
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Copper-catalyzed N H/S H functionalization: A strategy for the synthesis of benzothiadiazine derivatives. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.02.063] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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31
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32
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Patel OPS, Anand D, Maurya RK, Yadav PP. H2O2/DMSO-Promoted Regioselective Synthesis of 3,3'-Bisimidazopyridinylmethanes via Intermolecular Oxidative C(sp(2))-H Bond Activation of Imidazoheterocycles. J Org Chem 2016; 81:7626-34. [PMID: 27487477 DOI: 10.1021/acs.joc.6b01355] [Citation(s) in RCA: 63] [Impact Index Per Article: 7.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
In the past decade, metal-free approaches for C-C bond formation have attracted a great deal of attention due to their ease of use and low cost. This report represents a novel and metal-free synthesis of 3,3'-bisimidazopyridinylmethanes via intermolecular oxidative C(sp(2))-H bond functionalization of imidazo[1,2-a]pyridines with dimethyl sulfoxide as the carbon synthon (CH2) using H2O2 as a mild oxidant under air. A library of 3,3'-bis(2-arylimidazo[1,2-a]pyridin-3-yl)methanes has been achieved in good to excellent yields. The present methodology has been successfully applied to imidazo[2,1-b]thiazoles and imidazo[2,1-b]benzothiazoles. Furthermore, the current approach was also extended for the synthesis of unsymmetrical 3,3'-bisimidazopyridinylmethanes under optimized reaction conditions. A mechanistic pathway is proposed on the basis of experiments with radical scavengers and DMSO-d6 and ESI-MS observations.
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Affiliation(s)
- Om P S Patel
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute , BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Devireddy Anand
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute , BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Rahul K Maurya
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute , BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
| | - Prem P Yadav
- Medicinal and Process Chemistry Division, CSIR-Central Drug Research Institute , BS-10/1, Sector 10, Jankipuram Extension, Sitapur Road, Lucknow 226031, India
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33
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Mariappan A, Rajaguru K, Merukan Chola N, Muthusubramanian S, Bhuvanesh N. Hypervalent Iodine(III) Mediated Synthesis of 3-Substituted 5-Amino-1,2,4-thiadiazoles through Intramolecular Oxidative S–N Bond Formation. J Org Chem 2016; 81:6573-9. [DOI: 10.1021/acs.joc.6b01199] [Citation(s) in RCA: 39] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Arumugam Mariappan
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - Kandasamy Rajaguru
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - Noufal Merukan Chola
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - Shanmugam Muthusubramanian
- Department
of Organic Chemistry, School of Chemistry, Madurai Kamaraj University, Madurai 625 021, India
| | - Nattamai Bhuvanesh
- X-ray Diffraction Laboratory, Department of Chemistry, Texas A&M University, College Station, Texas 77842, United States
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34
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Arasteh-Fard Z, Dilmaghani KA, Saeedi M, Mahdavi M, Shafiee A. Synthesis of Novel Phthalazino[1,2-b]quinazolinedione Derivatives: Efficient and Practical Reaction of 2-Amino-N′-Arylbenzohydrazides and 2-Formylbenzoic Acids. Helv Chim Acta 2016. [DOI: 10.1002/hlca.201600025] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Zahra Arasteh-Fard
- Department of Chemistry; Faculty of Sciences; Urmia University; Urmia Iran
| | | | - Mina Saeedi
- Medicinal Plants Research Center; Faculty of Pharmacy; Tehran University of Medical Sciences; Tehran Iran
- Persian Medicine and Pharmacy Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - Mohammad Mahdavi
- Drug Design and Development Research Center; Tehran University of Medical Sciences; Tehran Iran
| | - Abbas Shafiee
- Department of Medicinal Chemistry; Faculty of Pharmacy and Pharmaceutical Sciences Research Center; Tehran University of Medical Sciences; Tehran Iran
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35
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Dzhons DY, Budruev AV. Synthesis of 2,1-benzisoxazole-3(1H)-ones by base-mediated photochemical N-O bond-forming cyclization of 2-azidobenzoic acids. Beilstein J Org Chem 2016; 12:874-81. [PMID: 27340478 PMCID: PMC4902054 DOI: 10.3762/bjoc.12.86] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2015] [Accepted: 04/18/2016] [Indexed: 01/03/2023] Open
Abstract
The base-mediated photochemical cyclization of 2-azidobenzoic acids with the formation of 2,1-benzisoxazole-3(1H)-ones is reported. The optimization and scope of this cyclization reaction is discussed. It is shown that an essential step of the ring closure of 2-azidobenzoic acids is the formation and photolysis of 2-azidobenzoate anions.
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Affiliation(s)
- Daria Yu Dzhons
- Chemistry Department, Lobachevsky State University of Nizhny Novgorod, Gagarina pr. 23, Building 5, 603950, Nizhny Novgorod, Russian Federation
| | - Andrei V Budruev
- Chemistry Department, Lobachevsky State University of Nizhny Novgorod, Gagarina pr. 23, Building 5, 603950, Nizhny Novgorod, Russian Federation
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36
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Chakraborty A, Jana S, Kibriya G, Dey A, Hajra A. tert-Butyl nitrite mediated azo coupling between anilines and imidazoheterocycles. RSC Adv 2016. [DOI: 10.1039/c6ra03070j] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023] Open
Abstract
A tBuONO mediated practical and efficient method for the synthesis of azo imidazoheterocycles with broad functionalities has been achieved by the reaction between imidazoheterocycles and anilines at room temperature in goods yields.
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Affiliation(s)
| | - Sourav Jana
- Department of Chemistry
- Visva-Bharati (A Central University)
- India
| | - Golam Kibriya
- Department of Chemistry
- Visva-Bharati (A Central University)
- India
| | - Amrita Dey
- Department of Chemistry
- Visva-Bharati (A Central University)
- India
| | - Alakananda Hajra
- Department of Chemistry
- Visva-Bharati (A Central University)
- India
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37
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Kandimalla SR, Sabitha G. Metal-free C–N bond formations: one-pot synthesis of pyrido[2′,1′:2,3]imidazo[4,5-c]cinnolines, benzo[4′,5']thiazolo- and thiazolo[2′,3′:2,3]imidazo[4,5-c]cinnolines. RSC Adv 2016. [DOI: 10.1039/c6ra15418b] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient one-pot synthesis of novel pyrido[2′,1′:2,3]imidazo[4,5-c]cinnoline derivatives has been achieved with moderate to good yields, with two C–N bond formations through C–H functionalization of 2-arylimidazo[1,2-a]pyridines.
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Affiliation(s)
- Satheeshkumar Reddy Kandimalla
- Natural Products Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research (AcSIR)
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