1
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Moazzam A, Farid SM, Khaleghi N, Alizadeh N, Mahdavi M. Photochemical regioselective C–H arylation of imidazo[1,2- a]pyridine derivatives using chlorophyll as a biocatalyst and diazonium salts. NEW J CHEM 2022. [DOI: 10.1039/d1nj06059g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
This communication describes the development of a mild method for the arylation of imidazo[1,2-a]pyridine with diazonium salt derivatives and using chlorophyll as a biocatalyst via visible-light catalysis.
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Affiliation(s)
- Ali Moazzam
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Sara Moghadam Farid
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Nima Khaleghi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Naeimeh Alizadeh
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
| | - Mohammad Mahdavi
- Endocrinology and Metabolism Research Center, Endocrinology and Metabolism Clinical Sciences Institute, Tehran University of Medical Sciences, Tehran, Iran
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2
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Wang S, Zhang S, Liu M, Zang J, Jiang G, Ji F. Palladium-catalyzed C3-selective C–H oxidative carbonylation of imidazo[1,2-a]pyridines with CO and alcohols: a way to access esters. Org Chem Front 2020. [DOI: 10.1039/d0qo00003e] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A palladium-catalyzed C3-selective C–H oxidative carbonylation for the synthesis of various esters from imidazo[1,2-a]pyridines and CO with high efficiency and high atom economy has been developed.
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Affiliation(s)
- Shoucai Wang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Siyu Zhang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Meichen Liu
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Jiawang Zang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Guangbin Jiang
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
| | - Fanghua Ji
- Guangxi Key Laboratory of Electrochemical and Magnetochemical Function Materials
- College of Chemistry and Bioengineering
- Guilin University of Technology
- Guilin 541004
- People's Republic of China
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3
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Salhi L, Achouche-Bouzroura S, Nechak R, Nedjar-Kolli B, Rabia C, Merazig H, Poulain-Martini S, Dunach E. Synthesis of functionalized dihydroimidazo[1,2-A]pyridines and 4-thiazolidinone derivatives from maleimide, as new class of antimicrobial agents. SYNTHETIC COMMUN 2019. [DOI: 10.1080/00397911.2019.1699933] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Lydia Salhi
- Laboratory of Applied Organic Chemistry, University of Sciences and Technology, Bab-Ezzouar, Algiers, Algeria
| | - Samia Achouche-Bouzroura
- Laboratory of Applied Organic Chemistry, University of Sciences and Technology, Bab-Ezzouar, Algiers, Algeria
| | - Rosa Nechak
- Laboratory of Applied Organic Chemistry, University of Sciences and Technology, Bab-Ezzouar, Algiers, Algeria
| | - Bellara Nedjar-Kolli
- Laboratory of Applied Organic Chemistry, University of Sciences and Technology, Bab-Ezzouar, Algiers, Algeria
| | - Chérifa Rabia
- Laboratory of Natural Gas Chemistry, University of Sciences and Technology, Bab-Ezzouar, Algiers, Algeria
| | - Hocine Merazig
- Chemistry Research Unit of Environmental and Molecular Structural (CHEMS), Faculty of Exact Sciences, Department of Chemistry, University of Constantine, Constantine, Algeria
| | | | - Elisabet Dunach
- Chemistry Institute of Nice, Université Côte d'Azur, CNRS, Nice Cedex 2, France
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4
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Kaur N, Bhardwaj P, Devi M, Verma Y, Ahlawat N, Grewal P. Ionic Liquids for the Synthesis of Five-Membered N,N-, N,N,N- and N,N,N,NHeterocycles. CURR ORG CHEM 2019. [DOI: 10.2174/1385272823666190717101741] [Citation(s) in RCA: 17] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Abstract
Due to special properties of ILs (Ionic Liquids) like their wide liquid range, good solvating ability, negligible vapour pressure, non-inflammability, environment friendly medium, high thermal stability, easy recycling and rate promoters etc. they are used in organic synthesis. The investigation for the replacement of organic solvents in organic synthesis is a growing area of interest due to increasing environmental issues. Therefore, ionic liquids have attracted the attention of chemists and act as a catalyst and reaction medium in organic reaction with high activity. There is no doubt that ionic liquids have become a major subject of study for modern chemistry. In comparison to traditional processes the use of ionic liquids resulted in improved, complimentary or alternative selectivities in organic synthesis. The present manuscript reported the synthesis of multiple nitrogen containing five-membered heterocyclic compounds using ionic liquids. This review covered interesting discoveries in the past few years.
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Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Meenu Devi
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Neha Ahlawat
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali-304022 (Rajasthan), India
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5
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Samanta SK, Bera MK. Iodine mediated oxidative cross coupling of 2-aminopyridine and aromatic terminal alkyne: a practical route to imidazo[1,2-a]pyridine derivatives. Org Biomol Chem 2019; 17:6441-6449. [PMID: 31206121 DOI: 10.1039/c9ob00812h] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
A novel, transition-metal free route leading to imidazo[1,2-a]pyridine derivatives via iodine mediated oxidative coupling between 2-aminopyridine and aromatic terminal alkyne has been demonstrated. This newly developed method discloses an operationally simple way for the construction of imidazoheterocycles. Commercially available antiulcer drug zolimidine may readily be synthesized employing this method.
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Affiliation(s)
- Surya Kanta Samanta
- Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur PO-Botanic Garden, Howrah-711 103, WB, India.
| | - Mrinal K Bera
- Department of Chemistry, Indian Institute of Engineering Science and Technology (IIEST), Shibpur PO-Botanic Garden, Howrah-711 103, WB, India.
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6
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Yu Y, Su Z, Cao H. Strategies for Synthesis of Imidazo[1,2-a
]pyridine Derivatives: Carbene Transformations or C−H Functionalizations. CHEM REC 2018; 19:2105-2118. [DOI: 10.1002/tcr.201800168] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2018] [Revised: 11/22/2018] [Indexed: 01/21/2023]
Affiliation(s)
- Yue Yu
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan 528458 P.R. of China
| | - Zhengquan Su
- School of Public Health; Guangdong Pharmaceutical University; Guangzhou 510006 P.R. of China
| | - Hua Cao
- School of Chemistry and Chemical Engineering; Guangdong Pharmaceutical University; Zhongshan 528458 P.R. of China
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7
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8
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Green metal-free synthesis of spiro-fused 3,4′-pyrazolo[4′,3′:5,6]pyrido[2,3-d]pyrimidine derivatives via deamination cyclization reactions in aqueous medium. RESEARCH ON CHEMICAL INTERMEDIATES 2018. [DOI: 10.1007/s11164-018-3642-3] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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9
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Ghosh P, Ganguly B, Kar B, Dwivedi S, Das S. Green procedure for highly efficient, rapid synthesis of imidazo[1,2-a]pyridine and its late stage functionalization. SYNTHETIC COMMUN 2018. [DOI: 10.1080/00397911.2018.1434893] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Prasanjit Ghosh
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
| | - Bhaskar Ganguly
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
| | - Barnali Kar
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
| | - Seema Dwivedi
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
| | - Sajal Das
- Department of Chemistry, University of North Bengal, Darjeeling, West Bengal, India
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10
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Sunkari S, Shaik SP, Krishna NH, Subba Rao AV, Kodiripaka BG, Alarifi A, Kamal A. Molecular Iodine-Promoted Transimination for the Synthesis of 6-Phenylpyrido[2′,1′:2,3]imidazo[4,5-c
]quinoline and 6-(Pyridin-2-yl)pyrido[2′,1′:2,3]imidazo[4,5-c
]quinolines. ASIAN J ORG CHEM 2017. [DOI: 10.1002/ajoc.201700357] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Affiliation(s)
- Satish Sunkari
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
| | - Siddiq Pasha Shaik
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
| | - Namballa Hari Krishna
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Hyderabad 500036 India
| | - Ayanampudi Venkata Subba Rao
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
- Department of Pharmacology and Molecular Sciences; Johns Hopkins School of Medicine; 725 North Wolfe St. Baltimore Maryland 21205 United States
| | | | - Abdullah Alarifi
- Chemistry Department; College of Science; King Saud University; Riyadh 11451 Saudi Arabia
| | - Ahmed Kamal
- Division of Medicinal Chemistry and Biotechnology; CSIR-Indian Institute of Chemical Technology; Hyderabad 500007 India
- Department of Medicinal Chemistry; National Institute of Pharmaceutical Education and Research; Hyderabad 500036 India
- Chemistry Department; College of Science; King Saud University; Riyadh 11451 Saudi Arabia
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11
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An efficient access to 2,3-diarylimidazo[1,2-a]pyridines via silver(I)-catalyzed C-H bond functionalization. MONATSHEFTE FUR CHEMIE 2017. [DOI: 10.1007/s00706-017-1950-8] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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12
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Wagare DS, Farooqui M, Keche TD, Durrani A. Efficient and green microwave-assisted one-pot synthesis of azaindolizines in PEG-400 and water. SYNTHETIC COMMUN 2016. [DOI: 10.1080/00397911.2016.1223314] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
| | - Mazhar Farooqui
- Department of Chemistry, Dr. Rafique Zakaria College for Women, Aurangabad, India
| | - Tushar D. Keche
- Department of Chemistry, Vivekanand College, Aurangabad, India
| | - Ayesha Durrani
- Department of Chemistry, Dr. Rafique Zakaria College for Women, Aurangabad, India
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13
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Aggarwal R, Singh G, Sanz D, Claramunt RM, Torralba MC, Torres MR. NBS mediated one-pot regioselective synthesis of 2,3-disubstituted imidazo[1,2- a ]pyridines and their unambiguous characterization through 2D NMR and X-ray crystallography. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.04.072] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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14
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Raja R, Sivasubramaniyan A, Murugan D, Subbaiah N, George J, Poovan S, Sangaraiah N, Alagusundaram P, Shanmugam K, Manivachagam C. A green synthesis of 1,2,3-triazolyl-pyridine hybrids and evaluation of their antibacterial activity. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2575-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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15
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Roslan II, Ng KH, Chuah GK, Jaenicke S. 2-Aminopyridines as an α-Bromination Shuttle in a Transition Metal-Free One-Pot Synthesis of Imidazo[1,2-a
]pyridines. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201501012] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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16
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Chen Z, Wen Y, Luo G, Ye M, Wang Q. Transition-metal-free C–C bond cleavage and formation: efficient synthesis of 2,3-diarylimidazo[1,2-α]pyridines from 2-aminopyridines and alkynoates. RSC Adv 2016. [DOI: 10.1039/c6ra19291b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
Abstract
A highly efficient transition-metal-free cyclization reaction for the synthesis of 2,3-diarylimidazo[1,2-α]pyridines is described.
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Affiliation(s)
- Zhengwang Chen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou
- China
| | - Yuelu Wen
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou
- China
| | - Guotian Luo
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou
- China
| | - Min Ye
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou
- China
| | - Qinghao Wang
- Key Laboratory of Organo-Pharmaceutical Chemistry of Jiangxi Province
- Gannan Normal University
- Ganzhou
- China
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17
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Lei S, Chen G, Mai Y, Chen L, Cai H, Tan J, Cao H. Regioselective Copper-Catalyzed Oxidative Cross-Coupling of Imidazo[1,2-a]pyridines with Methyl Ketones: An Efficient Route for Synthesis of 1,2-Diketones. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500803] [Citation(s) in RCA: 68] [Impact Index Per Article: 7.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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18
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Efficient synthesis of 2-arylindoles, 2-arylimidazo[1,2-a]pyridines and 2-arylquinoxalines, and their bis-derivatives using [Hmim]OTf ionic liquid supported on nano-silica as a reusable catalyst. JOURNAL OF THE IRANIAN CHEMICAL SOCIETY 2015. [DOI: 10.1007/s13738-015-0603-2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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19
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Wang Y, Frett B, McConnell N, Li HY. Metal-free, efficient hydrazination of imidazo[1,2-a]pyridine with diethyl azodicarboxylate in neutral media. Org Biomol Chem 2015; 13:2958-64. [PMID: 25611884 PMCID: PMC4675458 DOI: 10.1039/c4ob02284j] [Citation(s) in RCA: 34] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first example of metal-free regioselective hydrazination of imidazo[1,2-a]pyridine with diethyl azodicarboxylate is accomplished. This procedure is chemically appealing due to the high degree of functional group tolerance and efficiency in expanding the molecular diversity.
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Affiliation(s)
- Yuanxiang Wang
- Department of Pharmacology and Toxicology, College of Pharmacy, The University of Arizona, Tucson, Arizona 85721, USA.
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20
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Vellakkaran M, Lingayya R, Naveen Kumar B, Nagaiah K, Poornachandra Y, Ganesh Kumar C. Palladium(0)-catalyzed direct C–H hetero-arylation of 2-arylimidazo [1,2-a]pyridines with (E)-1-(5-bromothiophen-2-yl)-3-arylprop-2-en-1-ones and their anticancer activity. RSC Adv 2015. [DOI: 10.1039/c5ra15078g] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023] Open
Abstract
An efficient palladium(0)-catalyzed direct hetero-arylation of imidazo[1,2-a]pyridines at the C-3 position of the imidazole ring has been described.
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Affiliation(s)
- Mari Vellakkaran
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Rajaka Lingayya
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Bejjanki Naveen Kumar
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - Kommu Nagaiah
- Organic and Biomolecular Chemistry Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
- Academy of Scientific and Innovative Research (AcSIR)
| | - Y. Poornachandra
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
| | - C. Ganesh Kumar
- Medicinal Chemistry and Pharmacology Division
- CSIR-Indian Institute of Chemical Technology
- Hyderabad 500 007
- India
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21
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Zhao L, Zhan H, Liao J, Huang J, Chen Q, Qiu H, Cao H. Highly regioselective palladium-catalyzed direct cross-coupling of imidazo[1,2-a]pyridines with arylboronic acids. CATAL COMMUN 2014. [DOI: 10.1016/j.catcom.2014.06.028] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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22
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Martins MAP, Frizzo CP, Tier AZ, Moreira DN, Zanatta N, Bonacorso HG. Update 1 of: Ionic Liquids in Heterocyclic Synthesis. Chem Rev 2014; 114:PR1-70. [DOI: 10.1021/cr500106x] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Marcos A. P. Martins
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Clarissa P. Frizzo
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Aniele Z. Tier
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Dayse N. Moreira
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Nilo Zanatta
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Helio G. Bonacorso
- Núcleo de Química
de Heterociclos (NUQUIMHE), Departamento de Química, Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
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23
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Hiebel MA, Fall Y, Scherrmann MC, Berteina-Raboin S. Straightforward Synthesis of Various 2,3-Diarylimidazo[1,2-a]pyridines in PEG400Medium through One-Pot Condensation and C-H Arylation. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402079] [Citation(s) in RCA: 43] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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24
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Wang Y, Frett B, Li HY. Efficient access to 2,3-diarylimidazo[1,2-a]pyridines via a one-pot, ligand-free, palladium-catalyzed three-component reaction under microwave irradiation. Org Lett 2014; 16:3016-9. [PMID: 24854606 PMCID: PMC4059256 DOI: 10.1021/ol501136e] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2014] [Indexed: 01/18/2023]
Abstract
An expeditious one-pot, ligand-free, Pd(OAc)2-catalyzed, three-component reaction for the synthesis of 2,3-diarylimidazo[1,2-a]pyridines was developed under microwave irradiation. With the high availability of commercial reagents and great efficiency in expanding molecule diversity, this methodology is superior to the existing procedures for the synthesis of 2,3-diarylimidazo[1,2-a]pyridines analogues.
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Affiliation(s)
- Yuanxiang Wang
- Department of Pharmacology
and Toxicology, College of Pharmacy, The
University of Arizona, Tucson, Arizona 85721, United States
- The University of Arizona
Cancer Center, Tucson, Arizona 85724, United
States
| | - Brendan Frett
- Department of Pharmacology
and Toxicology, College of Pharmacy, The
University of Arizona, Tucson, Arizona 85721, United States
- The University of Arizona
Cancer Center, Tucson, Arizona 85724, United
States
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25
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Interaction Study of an Amorphous Solid Dispersion of Cyclosporin A in Poly-Alpha-Cyclodextrin with Model Membranes by (1)H-, (2)H-, (31)P-NMR and Electron Spin Resonance. JOURNAL OF DRUG DELIVERY 2014; 2014:575719. [PMID: 24883210 PMCID: PMC4027026 DOI: 10.1155/2014/575719] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/04/2013] [Revised: 03/21/2014] [Accepted: 03/31/2014] [Indexed: 11/21/2022]
Abstract
The properties of an amorphous solid dispersion of cyclosporine A (ASD) prepared with the copolymer alpha cyclodextrin (POLYA) and cyclosporine A (CYSP) were investigated by 1H-NMR in solution and its membrane interactions were studied by 1H-NMR in small unilamellar vesicles and by 31P 2H NMR in phospholipidic dispersions of DMPC (dimyristoylphosphatidylcholine) in comparison with those of POLYA and CYSP alone. 1H-NMR chemical shift variations showed that CYSP really interacts with POLYA, with possible adduct formation, dispersion in the solid matrix of the POLYA, and also complex formation. A coarse approach to the latter mechanism was tested using the continuous variations method, indicating an apparent 1 : 1 stoichiometry. Calculations gave an apparent association constant of log Ka = 4.5. A study of the interactions with phospholipidic dispersions of DMPC showed that only limited interactions occurred at the polar head group level (31P). Conversely, by comparison with the expected chain rigidification induced by CYSP, POLYA induced an increase in the fluidity of the layer while ASD formation led to these effects almost being overcome at 298 K. At higher temperature, while the effect of CYSP seems to vanish, a resulting global increase in chain fluidity was found in the presence of ASD.
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26
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One-Pot Synthesis ofN-(Imidazo[1,2-a]pyridin-3-yl)-Substituted Sulfonamides Using Catalytic Zinc Chloride. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301612] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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27
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Cao H, Lei S, Liao J, Huang J, Qiu H, Chen Q, Qiu S, Chen Y. Palladium(ii)-catalyzed intermolecular oxidative C-3 alkenylations of imidazo[1,2-a]pyridines by substrate-contolled regioselective C–H functionalization. RSC Adv 2014. [DOI: 10.1039/c4ra09669j] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient and highly regioselective palladium(ii)-catalyzed oxidative C-3 alkenylation of imidazo[1,2-a]pyridines with acrylate, acrylonitrile, or vinylarenes has been developed by using oxygen as an oxidant.
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Affiliation(s)
- Hua Cao
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Sai Lei
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Jinqiang Liao
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Jianping Huang
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Huifang Qiu
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Qinlin Chen
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Shuxian Qiu
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Yaoyi Chen
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
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28
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Zhan H, Zhao L, Li N, Chen L, Liu J, Liao J, Cao H. Ruthenium-catalyzed direct C-3 oxidative olefination of imidazo[1,2-a]pyridines. RSC Adv 2014. [DOI: 10.1039/c4ra04669b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
Ruthenium-catalyzed regioselective C-3 oxidative olefination of imidazo[1,2-a]pyridines.
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Affiliation(s)
- Haiying Zhan
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Limin Zhao
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Naiying Li
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Longbin Chen
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Jingyun Liu
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Jinqiang Liao
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
| | - Hua Cao
- School of Chemistry and Chemical Engineering
- Guangdong Pharmaceutical University
- Guangzhou 510006, P. R. China
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29
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Pandey AK, Sharma R, Singh A, Shukla S, Srivastava K, Puri SK, Kumar B, Chauhan PMS. Synthesis of biologically active pyridoimidazole/imidazobenzothiazole annulated polyheterocycles using cyanuric chloride in water. RSC Adv 2014. [DOI: 10.1039/c4ra03415e] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
An efficient and mild protocol for rapid access to N-fused polyheterocycles via Pictet–Spengler type 6-endo cyclization by cyanuric chloride in aqueous medium has been developed.
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Affiliation(s)
- Anand Kumar Pandey
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow, India
| | - Rashmi Sharma
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow, India
| | - Awantika Singh
- Sophisticated Analytical Instrument Facility
- CSIR-Central Drug Research Institute
- Lucknow, India
| | - Sanjeev Shukla
- Sophisticated Analytical Instrument Facility
- CSIR-Central Drug Research Institute
- Lucknow, India
| | - Kumkum Srivastava
- Division of Parasitology
- CSIR-Central Drug Research Institute
- Lucknow, India
| | - Sunil K. Puri
- Division of Parasitology
- CSIR-Central Drug Research Institute
- Lucknow, India
| | - Brijesh Kumar
- Sophisticated Analytical Instrument Facility
- CSIR-Central Drug Research Institute
- Lucknow, India
| | - Prem M. S. Chauhan
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow, India
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30
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Cao H, Liu X, Zhao L, Cen J, Lin J, Zhu Q, Fu M. One-Pot Regiospecific Synthesis of Imidazo[1,2-a]pyridines: A Novel, Metal-Free, Three-Component Reaction for the Formation of C–N, C–O, and C–S Bonds. Org Lett 2013; 16:146-9. [DOI: 10.1021/ol4031414] [Citation(s) in RCA: 112] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Hua Cao
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou 510006, P.R. of China
| | - Xiaohang Liu
- BASF Catalyst, 23800 Mercantile Road, Beachwood, Ohio 44124, United States
| | - Limin Zhao
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou 510006, P.R. of China
| | - Jinghe Cen
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou 510006, P.R. of China
| | - Jingxin Lin
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou 510006, P.R. of China
| | - Qiuxia Zhu
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou 510006, P.R. of China
| | - Minling Fu
- School
of Chemistry and Chemical Engineering, Guangdong Pharmaceutical University, Guangzhou 510006, P.R. of China
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31
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Zhang Y, Chen Z, Wu W, Zhang Y, Su W. CuI-Catalyzed Aerobic Oxidative α-Aminaton Cyclization of Ketones to Access Aryl or Alkenyl-Substituted Imidazoheterocycles. J Org Chem 2013; 78:12494-504. [DOI: 10.1021/jo402134x] [Citation(s) in RCA: 80] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Yuanfei Zhang
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Zhengkai Chen
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Wenliang Wu
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
| | - Yuhong Zhang
- Department
of Chemistry, Zhejiang University, Hangzhou 310027, China
| | - Weiping Su
- State
Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, China
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32
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Santra S, Bagdi AK, Majee A, Hajra A. Iron(III)-Catalyzed Cascade Reaction between Nitroolefins and 2-Aminopyridines: Synthesis of Imidazo[1,2-a]pyridines and Easy Access towards Zolimidine. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201201112] [Citation(s) in RCA: 146] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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33
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Basilio-Lopes A, de Aquino TM, Mongeot A, Bourguignon JJ, Schmitt M. Toward versatile methods leading to highly functionalized imidazo[1,2-a]pyridines. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.02.117] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
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34
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An efficient access to 2,3-diarylimidazo[1,2-a]pyridines via imidazo[1,2-a]pyridin-2-yl triflate through a Suzuki cross-coupling reaction-direct arylation sequence. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2011.11.015] [Citation(s) in RCA: 64] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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35
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Han T, Shi Z, Peng Y, Zhao Z. Synthesis and Characterisation of Novel N Substituted 2-Methylimidazo[1,2a]Pyridine-3-Carboxamides. JOURNAL OF CHEMICAL RESEARCH 2011. [DOI: 10.3184/174751911x13026260434797] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A series of novel N substituted 2-methylimidazo[1,2a]pyridine-3-carboxamides has been synthesised in high yield by a convenient method and characterised by 1H NMR, MS, IR and elemental analysis
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Affiliation(s)
- Tao Han
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
| | - Zhichuan Shi
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
| | - Yongle Peng
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
| | - Zhigang Zhao
- College of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, P. R. China
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36
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Follot S, Debouzy JC, Crouzier D, Enguehard-Gueiffier C, Gueiffier A, Nachon F, Lefebvre B, Fauvelle F. Physicochemical properties and membrane interactions of anti-apoptotic derivatives 2-(4-fluorophenyl)-3-(pyridin-4-yl)imidazo[1,2-a]pyridine depending on the hydroxyalkylamino side chain length and conformation: An NMR and ESR study. Eur J Med Chem 2009; 44:3509-18. [DOI: 10.1016/j.ejmech.2008.12.026] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2008] [Accepted: 12/11/2008] [Indexed: 11/25/2022]
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37
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Martins MAP, Frizzo CP, Moreira DN, Zanatta N, Bonacorso HG. Ionic liquids in heterocyclic synthesis. Chem Rev 2008; 108:2015-50. [PMID: 18543878 DOI: 10.1021/cr078399y] [Citation(s) in RCA: 480] [Impact Index Per Article: 30.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Marcos A P Martins
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química , Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil.
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38
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Aly AA. A facile synthesis and heteroannulation of thiazolopyrimidine and related heterocyclic systems. J Heterocycl Chem 2008. [DOI: 10.1002/jhet.5570450408] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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39
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Affiliation(s)
- Marcos A. P. Martins
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química , Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Clarissa P. Frizzo
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química , Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Dayse N. Moreira
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química , Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Nilo Zanatta
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química , Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
| | - Helio G. Bonacorso
- Núcleo de Química de Heterociclos (NUQUIMHE), Departamento de Química , Universidade Federal de Santa Maria, 97105-900 Santa Maria-RS, Brazil
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40
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Bakherad M, Nasr-Isfahani H, Keivanloo A, Doostmohammadi N. Pd–Cu catalyzed heterocyclization during Sonogashira coupling: synthesis of 2-benzylimidazo[1,2-a]pyridine. Tetrahedron Lett 2008. [DOI: 10.1016/j.tetlet.2008.03.141] [Citation(s) in RCA: 51] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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41
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Convenient Synthesis of Alkenyl-, Alkynyl-, and Allenyl-Substituted Imidazo[1,2-a]pyridinesvia Palladium-Catalyzed Cross-Coupling Reactions. Helv Chim Acta 2007. [DOI: 10.1002/hlca.200790241] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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42
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Aly AA. A Facile Synthesis and Heteroannulation of Thiazolopyrimidine and Related Heterocyclic Systems. JOURNAL OF CHEMICAL RESEARCH 2007. [DOI: 10.3184/030823407x248621] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Reaction of pyrimidinylacetic acid 2 with different electrophilic and nucleophilic reagents gave annulated pyrimidine derivatives 3–11, respectively. Compound 3 ([7-(dibenzothien-2-yl)-5-phenyl-2,3-dihydro-5H-thiazolo[3,2-a]-pyrimidin-6-yl]acetic acid) was transformed to pyrimidinylacetyl azide 12, which upon heterocyclisation with active methylene compounds, acidic and basic reagents furnished functionally substituted heteroaromatic compounds 13–21, respectively. The structures of the synthesised derivatives were elucidated by elemental and spectral analyses.
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Affiliation(s)
- Aly A. Aly
- Chemistry Department, Faculty of Science, Benha University, Benha, Egypt
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43
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Da Costa G, Mouret L, Chevance S, Le Rumeur E, Bondon A. NMR of molecules interacting with lipids in small unilamellar vesicles. EUROPEAN BIOPHYSICS JOURNAL: EBJ 2007; 36:933-42. [PMID: 17565495 DOI: 10.1007/s00249-007-0186-7] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2007] [Revised: 05/03/2007] [Accepted: 05/07/2007] [Indexed: 11/24/2022]
Abstract
Detailed characterization of protein, peptide or drug interactions with natural membrane is still a challenge. This review focuses on the use of nuclear magnetic resonance (NMR) for the analysis of interaction of molecules with small unilamellar vesicles (SUV). These phospholipid vesicles are often used as model membranes for fluorescence or circular dichroism experiments. The various NMR approaches for studying molecule-lipid association are reviewed. After a brief survey of the SUV characterization, the use of heteronuclear NMR (phosphorous, carbon, fluorine) is described. Applications of proton NMR through transferred nuclear Overhauser effect to perform structural determination of peptide are presented. Special care is finally given to the influence of the kinetic of the interactions for the proton NMR of bound molecules in SUV, which can constitute a good model for the study of dynamical processes at the membrane surface.
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Affiliation(s)
- Grégory Da Costa
- RMN-Interactions Lipides Protéines, UMR CNRS 6026, IFR 140, PRISM, Université de Rennes 1, 35043, Rennes Cedex, France
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44
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45
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An efficient microwave-assisted Suzuki cross-coupling reaction of imidazo[1,2-a]pyridines in aqueous medium. Tetrahedron Lett 2006. [DOI: 10.1016/j.tetlet.2006.07.098] [Citation(s) in RCA: 33] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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46
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Nadipuram AK, Kerwin SM. Thermal cyclization of 1,2-dialkynylimidazoles to imidazo[1,2-a]pyridines. Tetrahedron 2006. [DOI: 10.1016/j.tet.2005.11.084] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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47
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48
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49
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Vanelle P, Castera C, D. Crozet M. An Efficient Synthetic Route to New Imidazo[1,2-a]pyridines by Cross-Coupling Reactions in Aqueous Medium. HETEROCYCLES 2005. [DOI: 10.3987/com-05-10548] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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