1
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Valla L, Pitrat D, Mulatier JC, Le Bahers T, Jeanneau E, Ali LMA, Nguyen C, Gary-Bobo M, Andraud C, Bretonnière Y. Imidazo[1,2- a]pyridine and Imidazo[1,5- a]pyridine: Electron Donor Groups in the Design of D-π-A Dyes. J Org Chem 2024; 89:8407-8419. [PMID: 38853362 DOI: 10.1021/acs.joc.4c00232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/11/2024]
Abstract
This work investigates the electron-donating capabilities of two 10-π electron nitrogen bridgehead bicyclic [5,6]-fused ring systems, imidazo[1,2-a]pyridine and imidazo[1,5-a]pyridine rings. Eight compounds with varying positions of electron-withdrawing moieties (TCF or DCI) coupled to the imidazopyridine ring were synthesized and studied. DCI-containing compounds (Ib-IVb) exhibited a purely dipolar nature with broad absorption bands, weak fluorescence, large Stokes shifts, and strong solvatochromism. In contrast, TCF-containing compounds (Ia-IVa) demonstrated diverse properties. Imidazo[1,2-a]pyridine derivatives Ia and IIa were purely dipolar, while imidazo[1,5-a]pyridine derivatives IIIa and IVa displayed a cyanine-like character with intense absorption and higher quantum yields of emission. The observed gradual red shift in optical properties with changing electron-donor groups (IIb < Ib < IIIb < IVb) and (IIa < Ia < IIIa < IVa) underscores the stronger electron-donor character of imidazo[1,5-a]pyridine compared to that of imidazo[1,2-a]pyridine. Furthermore, crystalline powders of imidazo[1,2-a]pyridine derivatives exhibited fluorescence despite minimal emission in solution. Two compounds (Ib and IVa) were successfully formulated into nanoparticles for potential in vivo imaging applications in zebrafish embryos.
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Affiliation(s)
- Léa Valla
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
| | - Delphine Pitrat
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
| | - Jean-Christophe Mulatier
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
| | - Tangui Le Bahers
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
- Institut Universitaire de France 5 Rue Descartes, Paris 75005, France
| | - Erwann Jeanneau
- Univ Lyon, Centre de Diffractométrie Henri Longchambon, Université Lyon I, 43 Boulevard du 11 Novembre 1918, 69622 Villeurbanne Cedex, France
| | - Lamiaa M A Ali
- IBMM, Univ Montpellier, CNRS, ENSCM, 1919 Route de Mende, 34293 Montpellier, France
| | - Christophe Nguyen
- IBMM, Univ Montpellier, CNRS, ENSCM, 1919 Route de Mende, 34293 Montpellier, France
| | - Magali Gary-Bobo
- IBMM, Univ Montpellier, CNRS, ENSCM, 1919 Route de Mende, 34293 Montpellier, France
| | - Chantal Andraud
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
| | - Yann Bretonnière
- Laboratoire de Chimie de l'ENS de Lyon, Univ Lyon, ENS de Lyon, CNRS UMR 5182, Université Claude Bernard Lyon 1, 69342 Lyon, France
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2
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Volpi G, Laurenti E, Rabezzana R. Imidazopyridine Family: Versatile and Promising Heterocyclic Skeletons for Different Applications. Molecules 2024; 29:2668. [PMID: 38893542 PMCID: PMC11173518 DOI: 10.3390/molecules29112668] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2024] [Revised: 05/30/2024] [Accepted: 05/31/2024] [Indexed: 06/21/2024] Open
Abstract
In recent years, there has been increasing attention focused on various products belonging to the imidazopyridine family; this class of heterocyclic compounds shows unique chemical structure, versatile optical properties, and diverse biological attributes. The broad family of imidazopyridines encompasses different heterocycles, each with its own specific properties and distinct characteristics, making all of them promising for various application fields. In general, this useful category of aromatic heterocycles holds significant promise across various research domains, spanning from material science to pharmaceuticals. The various cores belonging to the imidazopyridine family exhibit unique properties, such as serving as emitters in imaging, ligands for transition metals, showing reversible electrochemical properties, and demonstrating biological activity. Recently, numerous noteworthy advancements have emerged in different technological fields, including optoelectronic devices, sensors, energy conversion, medical applications, and shining emitters for imaging and microscopy. This review intends to provide a state-of-the-art overview of this framework from 1955 to the present day, unveiling different aspects of various applications. This extensive literature survey may guide chemists and researchers in the quest for novel imidazopyridine compounds with enhanced properties and efficiency in different uses.
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Affiliation(s)
- Giorgio Volpi
- Department of Chemistry, University of Turin, Via Pietro Giuria 7, 10125 Torino, Italy; (E.L.)
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3
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Peng J, Li S, Huang J, Meng Q, Wang L, Xin W, Li W, Zhou W, Zhang L. Construction of Imidazole-Fused-Ring Systems by Iron-Catalyzed C(sp 3)-H Amination-Cyclization under Aerobic Conditions. J Org Chem 2023; 88:16581-16588. [PMID: 37976463 DOI: 10.1021/acs.joc.3c02078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2023]
Abstract
An iron-catalyzed efficient C-H amination for the construction of imidazole-fused-ring systems was developed under aerobic conditions. Compared to previous studies, this work exhibited green features. The reaction was conducted in the green solvent anisole, with water as the only byproduct. Four C(sp3)-H bonds were cleaved and three C-N bonds were formed in this transformation. Imidazo[1,5-a]pyridine-, imidazo[5,1-b]oxazole-, imidazo[5,1-b]thiazole-, imidazo[1,5-a]pyrazine-, and imidazo[1,5-a]imidazole-related N-heterocycles were obtained in acceptable-to-excellent yield.
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Affiliation(s)
- Jiangling Peng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Shijia Li
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Junwei Huang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Qianli Meng
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Lixin Wang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Wenlong Xin
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Weini Li
- Department of Diabetes Complications and Metabolism, Arthur Riggs Diabetes and Metabolism Research Institute, Beckman Research Institute of City of Hope, Duarte, California91010, United States
| | - Wei Zhou
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
| | - Lanyue Zhang
- School of Biomedical and Pharmaceutical Sciences, Guangdong University of Technology, Guangzhou, Guangdong 510006, China
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4
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Talpada N, Sharma AS, Sharma VS, Varma RS, Shrivastav PS, Ahmed R, Ammathnadu Sudhakar A. Visible light mediated synthesis of 1,3-diarylated imidazo[1,5- a]pyridines via oxidative amination of C-H catalyzed by graphitic carbon nitride. Org Biomol Chem 2023. [PMID: 37969017 DOI: 10.1039/d3ob01636f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2023]
Abstract
Graphitic carbon nitride (g-C3N4) as a novel heterogeneous catalyst is employed for the visible light-mediated synthesis of the imidazo[1,5-a]pyridines via the oxidative amination of C-H bond at room temperature without the need for any additional solvent. Extensive characterization of the catalyst was performed using techniques such as FT-IR, PXRD, TGA, SEM and EDX analysis. The optimized conditions enabled the successful and expeditious conversion of a wide range of substrates to imidazo[1,5-a]pyridines in good yields; a notable advantage of this catalyst being recyclability, as it can be reused for up to five cycles without significant loss of activity. This feature makes it suitable for gram-scale synthesis of imidazo[1,5-a]pyridines. Additionally, this approach offers several benefits from a green chemistry perspective as affirmed by its favorable green chemistry metrics (GCM), including low process mass intensity (PMI), low E-factor, high atom economy (AE), and good reaction mass efficiency (RME) relative to existing protocols. In addition, chemical yield (CY), mass intensity (MI), mass productivity (MP) and optimum efficiency were also calculated. This environmentally friendly method offers multiple advantages and represents a significant advancement in the synthesis of imidazo[1,5-a]pyridines.
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Affiliation(s)
- Nandish Talpada
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, Gujarat 380009, India.
| | - Anuj S Sharma
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, Gujarat 380009, India.
| | - Vinay S Sharma
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, Gujarat 380009, India.
| | - Rajender S Varma
- Centre of Excellence for Research in Sustainable Chemistry, Department of Chemistry, Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil
| | - Pranav S Shrivastav
- Department of Chemistry, School of Sciences, Gujarat University, Ahmedabad, Gujarat 380009, India.
| | - Rahul Ahmed
- Department of Chemistry, Indian Institute of Technology, Guwahati, 781039, Assam, India.
| | - Achalkumar Ammathnadu Sudhakar
- Department of Chemistry, Indian Institute of Technology, Guwahati, 781039, Assam, India.
- Centre for Sustainable Polymers, Indian Institute of Technology, Guwahati, 781039, Assam, India
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5
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Phuc BV, Nguyen NT, Van NTH, Nguyen TL, Nguyen VH, Tran CM, Nguyen H, Nguyen MT, Hung TQ, Dang TT. Facile iodine-promoted synthesis of bis(1-imidazo[1,5- a]pyridyl)arylmethanes and exploration of applications. Chem Commun (Camb) 2023; 59:1947-1950. [PMID: 36637415 DOI: 10.1039/d2cc05419a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A practical strategy for the iodine-promoted synthesis of bis(1-imidazo[1,5-a]pyridyl)arylmethane and its derivatives has been developed. These compounds exhibit high cytotoxicity toward various cancer cell lines and moreover they are promising ligands for the Cu-catalysed synthesis of quinolines.
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Affiliation(s)
- Ban Van Phuc
- Institute of Chemistry, Vietnamese Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Hanoi, Vietnam.
| | - Nina Thi Nguyen
- Faculty of Chemistry, VNU-Hanoi University of Science, 19 Le Thanh Tong, Hanoi, Vietnam.
| | - Nguyen Thi Hong Van
- Faculty of Chemistry, VNU-Hanoi University of Science, 19 Le Thanh Tong, Hanoi, Vietnam.
| | - Thanh Luan Nguyen
- Faculty of Chemistry, VNU-Hanoi University of Science, 19 Le Thanh Tong, Hanoi, Vietnam.
| | - Van Ha Nguyen
- Faculty of Chemistry, VNU-Hanoi University of Science, 19 Le Thanh Tong, Hanoi, Vietnam.
| | - Cong Minh Tran
- Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam
| | - Hien Nguyen
- Faculty of Chemistry, Hanoi National University of Education, 136 Xuan Thuy, Cau Giay, Hanoi, Vietnam
| | - Minh Tho Nguyen
- Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Tran Quang Hung
- Institute of Chemistry, Vietnamese Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Hanoi, Vietnam. .,Graduate University of Science and Technology, Vietnamese Academy of Science and Technology (VAST), 18 Hoang Quoc Viet, Hanoi, Vietnam
| | - Tuan Thanh Dang
- Faculty of Chemistry, VNU-Hanoi University of Science, 19 Le Thanh Tong, Hanoi, Vietnam.
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6
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Meena N, Dhiman S, Rangan K, Kumar A. Cobalt-catalyzed tandem one-pot synthesis of polysubstituted imidazo[1,5- a]pyridines and imidazo[1,5- a]isoquinolines. Org Biomol Chem 2022; 20:4215-4223. [PMID: 35546113 DOI: 10.1039/d2ob00526c] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An efficient cobalt-catalyzed tandem one-pot method has been developed for the synthesis of polysubstituted imidazo[1,5-a]-N-heteroaromatics. The method involves Knoevenagel condensation followed by cobalt-catalyzed direct alkenylation to give the desired polysubstituted imidazo[1,5-a]pyridines and imidazo[1,5-a]isoquinolines in a one-pot manner. This method exhibits a broad substrate scope, provides moderate to good (39-74%) yields and is amenable to scale-up to the gram scale.
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Affiliation(s)
- Neha Meena
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Shiv Dhiman
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
| | - Krishnan Rangan
- Department of Chemistry, Birla Institute of Technology and Science Pilani, Hyderabad Campus, Telangana, 500078, India
| | - Anil Kumar
- Department of Chemistry, Birla Institute of Technology and Science, Pilani, Rajasthan 333031, India.
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7
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Ramana Reddy M, Darapaneni CM, Patil RD, Kumari H. Recent synthetic methodologies for imidazo[1,5- a]pyridines and related heterocycles. Org Biomol Chem 2022; 20:3440-3468. [PMID: 35394477 DOI: 10.1039/d2ob00386d] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Imidazo[1,5-a]pyridine is a significant structural component of a large number of agrochemicals and pharmaceuticals. The synthesis of imidazo[1,5-a]pyridine has been a subject of intense research for numerous decades. A large number of transformations are now available to conveniently access imidazo[1,5-a]pyridine from readily available starting materials. This review details the recent development in imidazo[1,5-a]pyridine construction involving cyclocondensation, cycloaddition, oxidative cyclization, and transannulation reactions.
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Affiliation(s)
- Mittapalli Ramana Reddy
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA, 45267-0514.
| | | | - Rajendra D Patil
- School of Chemical Sciences, Moolji Jaitha College, Jalgaon, Maharashratra, India, 425001
| | - Harshita Kumari
- James L. Winkle College of Pharmacy, University of Cincinnati, Cincinnati, Ohio, USA, 45267-0514.
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8
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Volpi G. Luminescent imidazo[1,5‐a] pyridine scaffold: synthetic heterocyclization strategies overview and promising applications. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200171] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Giorgio Volpi
- University of Turin: Universita degli Studi di Torino Chemistry ITALY
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9
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Priola E, Conterosito E, Giordana A, Volpi G, Garino C, Andreo L, Diana E, Barolo C, Milanesio M. Polymorphism and solid state peculiarities in imidazo[1,5-a]pyridine core deriving compounds: An analysis of energetic and structural driving forces. J Mol Struct 2022. [DOI: 10.1016/j.molstruc.2021.132175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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10
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Wang Q, Yao X, Xu XJ, Zhang S, Ren L. Electrochemical [4 + 1] Tandem sp 3(C-H) Double Amination for the Direct Synthesis of 3-Acyl-Functionalized Imidazo[1,5- a]pyridines. ACS OMEGA 2022; 7:4305-4310. [PMID: 35155923 PMCID: PMC8829863 DOI: 10.1021/acsomega.1c06029] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 10/27/2021] [Accepted: 01/18/2022] [Indexed: 06/14/2023]
Abstract
3-Acyl imidazo[1,5-a]pyridines, featured pharmaceutical moieties that were prepared by a three-step reaction conventionally, could be obtained in one step by an electrochemical tandem sp3 (C-H) double amination of acetophenones with pyridine ethylamines using ammonium iodide as a redox mediator.
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Affiliation(s)
- Qiang Wang
- Research
Center For Biomedical And Health Science, Anhui Science and Technology University, Fengyang 233100, P. R. China
| | - Xia Yao
- Research
Center For Biomedical And Health Science, Anhui Science and Technology University, Fengyang 233100, P. R. China
| | - Xian-jing Xu
- Research
Center For Biomedical And Health Science, Anhui Science and Technology University, Fengyang 233100, P. R. China
| | - Shuai Zhang
- Nanjing
Harris Bio-Pharmaceutical Technology Co., Ltd., Nanjing, Jiangsu 210000, China
| | - Lei Ren
- Department
of Material and Chemical Engineering, Bengbu
University, Bengbu, Anhui 233030, P. R. China
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11
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Bori J, Manivannan V. A New Synthetic Route for Synthesis of
3‐Substituted
Imidazo[1,5‐
a
]pyridines. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4449] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jugal Bori
- Department of Chemistry Indian Institute of Technology Guwahati Guwahati Assam India
| | - Vadivelu Manivannan
- Department of Chemistry Indian Institute of Technology Guwahati Guwahati Assam India
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12
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Shibahara F, Shibata Y, Murai T. Imidazo[1,5- a]pyridinylidenes as π-Accepting NHC Ligands in Catalysis. CHEM LETT 2021. [DOI: 10.1246/cl.210461] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Fumitoshi Shibahara
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Yoshifuru Shibata
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
| | - Toshiaki Murai
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University, Yanagido, Gifu 501-1193, Japan
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13
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Wang Q, Zha M, Zhou F, Chen X, Wang B, Liu G, Qian L. CBr 4 Mediated [4 + 1] Dehydrocyclization for the Synthesis of Functionalized Imidazo[1,5-a]heterocycles from Pyridin-2-ylmethanamines and Aldehydes. ACS OMEGA 2021; 6:20303-20308. [PMID: 34395978 PMCID: PMC8358950 DOI: 10.1021/acsomega.1c02181] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 04/25/2021] [Accepted: 07/22/2021] [Indexed: 06/13/2023]
Abstract
A CBr4 mediated [4 + 1] dehydrocyclization was developed for the synthesis of imidazo[1,5-a]heterocycles from pyridin-2-ylmethanamines and aldehydes. This method was highly practical with the advantages of wide substrate scope, functional group tolerance, and mild reaction conditions.
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Affiliation(s)
- Qiang Wang
- Research
Center for Biomedical and Health Science, Anhui Science and Technology University, Fengyang 233100, P.R. China
| | - Meng Zha
- School
of Life and Health Science, Anhui Science
and Technology University, Fengyang 233100, P.R. China
| | - Feilong Zhou
- School
of Life and Health Science, Anhui Science
and Technology University, Fengyang 233100, P.R. China
| | - Xixi Chen
- School
of Life and Health Science, Anhui Science
and Technology University, Fengyang 233100, P.R. China
| | - Baiyu Wang
- School
of Life and Health Science, Anhui Science
and Technology University, Fengyang 233100, P.R. China
| | - Guodong Liu
- Research
Center for Biomedical and Health Science, Anhui Science and Technology University, Fengyang 233100, P.R. China
| | - Lisheng Qian
- Research
Center for Biomedical and Health Science, Anhui Science and Technology University, Fengyang 233100, P.R. China
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14
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Kadagathur M, Shaikh AS, Jadhav GS, Sigalapalli DK, Shankaraiah N, Tangellamudi ND. Cyclodesulfurization: An Enabling Protocol for Synthesis of Various Heterocycles. ChemistrySelect 2021. [DOI: 10.1002/slct.202100201] [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)
- Manasa Kadagathur
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Arbaz Sujat Shaikh
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Govinda Shivaji Jadhav
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Dilep Kumar Sigalapalli
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Nagula Shankaraiah
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
| | - Neelima D. Tangellamudi
- Department of Medicinal Chemistry National Institute of Pharmaceutical Education and Research (NIPER) Hyderabad 500037 India
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15
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Vassilyeva OY, Buvaylo EA, Lobko YV, Linnik RP, Kokozay VN, Skelton BW. Organic-inorganic hybrid tetrachlorocadmates as promising fluorescent agents for cross-linked polyurethanes: synthesis, crystal structures and extended performance analysis. RSC Adv 2021; 11:7713-7722. [PMID: 35423254 PMCID: PMC8695196 DOI: 10.1039/d0ra10787e] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/23/2020] [Accepted: 02/08/2021] [Indexed: 01/12/2023] Open
Abstract
The aim of this work is to apply organic–inorganic hybrid salts made of imidazo[1,5-a]pyridinium-based cations and halometallate anions as fluorescent agents to modify cross-linked polyurethane (CPU) for the creation of flexible photoluminescent films. The use of ionic compounds ensures excellent dispersion of the luminescent components in the polymer matrix and prevents solid-state quenching. The absence of phase segregation makes it possible to fabricate uniformly luminescent films with a large area. To this, new tetrachlorocadmate salts [L]2[CdCl4] (1) and [L′]2[CdCl4] (2), where L+ is 2-methyl-3-(pyridin-2-yl)imidazo[1,5-a]pyridinium and [L′]+ is 2-methylimidazo[1,5-a]pyridinium cations, have been prepared and characterized by IR, NMR, UV-Vis spectroscopy and single crystal X-ray diffraction. The organic cations resulted from the oxidative cyclization-condensation involving CH3NH2·HCl and 2-pyridinecarbaldehyde in methanol (1), and formaldehyde, CH3NH2·HCl and 2-pyridinecarbaldehyde in an aqueous media (2). In the crystal of 1, loosely packed tetrahedral cations and π–π stacked anions are arranged in separate columns parallel to the a-axis. The pseudo-layered structure of 2 is built of the organic and inorganic layers alternating along the a axis. The adjacent CdCl42− anions in the inorganic layer show no connectivity. The organic–inorganic hybrids 1 and 2 were immobilized in situ in the cross-linked polyurethane in low content (1 wt%). The photoluminescent properties of 1 and 2 in the solid state and in the polymer films were investigated. The semi-transparent CPU films, that remain stable for months, retain the photoluminescent ability of both hybrids in the blue region with a prominent red shift in their emission. Hybrid salts made of imidazo[1,5-a]pyridinium-based cations with easily tunable electronic structures, and halometallate anions that do not include any rare-earth or noble metals were used to fabricate flexible luminescent CPU films.![]()
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Affiliation(s)
- Olga Yu Vassilyeva
- Department of Chemistry, Taras Shevchenko National University of Kyiv 64/13 Volodymyrska str. Kyiv 01601 Ukraine
| | - Elena A Buvaylo
- Department of Chemistry, Taras Shevchenko National University of Kyiv 64/13 Volodymyrska str. Kyiv 01601 Ukraine
| | - Yevheniia V Lobko
- Department of Surface and Plasma Science, Charles University V Holešovičkách 2 Prague 18000 Czech Republic
| | - Rostyslav P Linnik
- Department of Chemistry, Taras Shevchenko National University of Kyiv 64/13 Volodymyrska str. Kyiv 01601 Ukraine
| | - Vladimir N Kokozay
- Department of Chemistry, Taras Shevchenko National University of Kyiv 64/13 Volodymyrska str. Kyiv 01601 Ukraine
| | - Brian W Skelton
- School of Molecular Sciences, University of Western Australia M310 Perth WA 6009 Australia
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16
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Kulkarni MR, Lad NP, Patil SM, Gaikwad ND. Thionyl chloride‐mediated synthesis of 2‐azaindolizine sulfur‐bridged dimers by CH bond direct chalcogenation of imidazo[1,5‐
a
]pyridines. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.201900516] [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)
- Mahesh R. Kulkarni
- Department of Chemistry Organic Chemistry Research Centre, K.R.T. Arts, B.H. Commerce and A.M. Science College Nashik India
- Department of Medicinal Chemistry Piramal Enterprises Ltd. Mumbai India
| | - Nitin P. Lad
- Department of Chemistry Organic Chemistry Research Centre, K.R.T. Arts, B.H. Commerce and A.M. Science College Nashik India
- Department of Medicinal Chemistry Piramal Enterprises Ltd. Mumbai India
| | | | - Nitin D. Gaikwad
- Department of Chemistry Organic Chemistry Research Centre, K.R.T. Arts, B.H. Commerce and A.M. Science College Nashik India
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17
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Volpi G, Priola E, Garino C, Daolio A, Rabezzana R, Benzi P, Giordana A, Diana E, Gobetto R. Blue fluorescent zinc(II) complexes based on tunable imidazo[1,5-a]pyridines. Inorganica Chim Acta 2020. [DOI: 10.1016/j.ica.2020.119662] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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18
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Ramírez-Gómez A, Gutiérrez-Hernández AI, Alvarado-Castillo MA, Toscano RA, Ortega-Alfaro MC, López-Cortés JG. Selenoamides as powerful scaffold to build imidazo[1,5-a]pyridines using a grinding protocol. J Organomet Chem 2020. [DOI: 10.1016/j.jorganchem.2020.121315] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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19
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Patil SG, Jadhav JS, Sankpal ST. Mg 3N 2-assisted one-pot synthesis of 1,3-disubstituted imidazo[1,5- a]pyridine. RSC Adv 2020; 10:11808-11815. [PMID: 35496590 PMCID: PMC9050600 DOI: 10.1039/c9ra10848c] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/24/2019] [Accepted: 03/03/2020] [Indexed: 11/21/2022] Open
Abstract
A novel Mg3N2-assisted one-pot annulation strategy has been developed via cyclo-condensation reaction of 2-pyridyl ketones with alkyl glyoxylates or aldehydes, allowing the formation of imidazo[1,5-a]pyridines exclusively with an exellent yield.
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Affiliation(s)
- Suhas G Patil
- Sant Rawool Maharaj Mahavidyalaya Kudal 416520 MS India.,Department of Chemistry, ASP College Devrukh Ratnagiri 415804 MS India +91 2354 260 058
| | | | - Sagar T Sankpal
- Department of Chemistry, ASP College Devrukh Ratnagiri 415804 MS India +91 2354 260 058
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20
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Vassilyeva OY, Buvaylo EA, Kokozay VN, Skelton BW, Rajnák C, Titiš J, Boča R. Long magnetic relaxation time of tetracoordinate Co 2+ in imidazo[1,5-a]pyridinium-based (C 13H 12N 3) 2[CoCl 4] hybrid salt and [Co(C 13H 12N 3)Cl 3] molecular complex. Dalton Trans 2019; 48:11278-11284. [PMID: 31268102 DOI: 10.1039/c9dt01642b] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
The novel organic-inorganic hybrid salt [L]2[CoCl4] (1) and molecular complex [CoLCl3] (2), where L+ is 2-methyl-3-(pyridin-2-yl)imidazo[1,5-a]pyridinium cation, feature simple {CoCl4} and {CoCl3N} tetrahedral environments of negligible (1) and a slightly higher distortion (2) that are responsible for rather low positive magnetic anisotropy of CoII ion with D/hc = 12.1(6) (1) and 19.4(15) cm-1 (2). Both compounds exhibit field-induced slow magnetic relaxation with three relaxation channels [low- (LF), intermediate- and high-frequency (HF) modes] that is frequency and field dependent. With the increased DC field, the peaks referring to the LF relaxation path are moved to lower frequencies so that the applied DC field causes prolongation of the relaxation time. The opposite is true for the HF relaxation branch: the peak is moved to higher frequencies. Considering the simplicity of the coordination environment and moderate magnetic anisotropy of the metal ion in 1 and 2, the compounds are unique with respect to the remarkably long relaxation time for a given applied DC field and temperature: τLF = 0.54(4) s at BDC = 1.0 T and T = 2.0 K for 1, and τLF = 1.8(2) s at BDC = 1.2 T and T = 1.9 K for 2.
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Affiliation(s)
- Olga Yu Vassilyeva
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska str., Kyiv 01601, Ukraine.
| | - Elena A Buvaylo
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska str., Kyiv 01601, Ukraine.
| | - Vladimir N Kokozay
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska str., Kyiv 01601, Ukraine.
| | - Brian W Skelton
- School of Molecular Sciences, Chemistry M310, the University of Western Australia, 35 Stirling Highway, Perth, WA 6009, Australia
| | - Cyril Rajnák
- Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 91701 Trnava, Slovakia
| | - Ján Titiš
- Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 91701 Trnava, Slovakia
| | - Roman Boča
- Department of Chemistry, Faculty of Natural Sciences, University of SS Cyril and Methodius, 91701 Trnava, Slovakia
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21
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Vassilyeva OY, Buvaylo EA, Kokozay VN, Skelton BW, Sobolev AN. Crystal structures of an imidazo[1,5- a]pyridinium-based ligand and its (C 13H 12N 3) 2[CdI 4] hybrid salt. Acta Crystallogr E Crystallogr Commun 2019; 75:1209-1214. [PMID: 31417794 PMCID: PMC6690455 DOI: 10.1107/s2056989019009964] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2019] [Accepted: 07/11/2019] [Indexed: 11/10/2022]
Abstract
The monocation product of the oxidative condensation-cyclization between two mol-ecules of pyridine-2-carbaldehyde and one mol-ecule of CH3NH2·HCl in methanol, 2-methyl-3-(pyridin-2-yl)imidazo[1,5-a]pyridinium, was isolated in the presence of metal ions as bis-[2-methyl-3-(pyridin-2-yl)imidazo[1,5-a]pyridin-2-ium] tetra-iodo-cadmate, (C13H12N3)2[CdI4], (I), and the mixed chloride/nitrate salt, bis-[2-methyl-3-(pyridin-2-yl)imidazo[1,5-a]pyridin-2-ium] 1.5-chlor-ide 0.5-nitrate trihydrate, 2C13H12N3 +·1.5Cl-·0.5NO3 -·3H2O, (II). Hybrid salt (I) crystallizes in the space group P21/n with two [L]2[CdI4] mol-ecules in the asymmetric unit related by pseudosymmetry. In the crystal of (I), layers of organic cations and of tetra-halometallate anions are stacked parallel to the ab plane. Anti-parallel L + cations disposed in a herring-bone pattern form π-bonded chains through aromatic stacking. In the inorganic layer, adjacent tetra-hedral CdI4 units have no connectivity but demonstrate close packing of iodide anions. In the crystal lattice of (II), the cations are arranged in stacks propagating along the a axis; the one-dimensional hydrogen-bonded polymer built of chloride ions and water mol-ecules runs parallel to a column of stacked cations.
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Affiliation(s)
- Olga Yu. Vassilyeva
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Elena A. Buvaylo
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Vladimir N. Kokozay
- Department of Chemistry, Taras Shevchenko National University of Kyiv, 64/13 Volodymyrska Street, Kyiv 01601, Ukraine
| | - Brian W. Skelton
- School of Molecular Sciences, M310, University of Western Australia, Perth, WA 6009, Australia
| | - Alexandre N. Sobolev
- School of Molecular Sciences, M310, University of Western Australia, Perth, WA 6009, Australia
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22
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Shibahara F. Direct Functionalizations of Carbon-Hydrogen Bonds Catalyzed by Palladium/Bidentate Nitrogen-based Ligand Complexes. J SYN ORG CHEM JPN 2019. [DOI: 10.5059/yukigoseikyokaishi.77.776] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Fumitoshi Shibahara
- Department of Chemistry and Biomolecular Science, Faculty of Engineering, Gifu University
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23
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Banerji B, Adhikary S, Majumder L, Ghosh S. A Green Synthetic Approach towards Polyarylated Oxazoles via Iodine‐Catalyzed One‐Pot sp
3
C−H Functionalization in Water: From Natural Product Synthesis To Photophysical Studies. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201800742] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Biswadip Banerji
- Organic and Medicinal Chemistry DivisionIndian Institute of Chemical Biology (CSIR-IICB) 4 Raja S. C. Mullick Road Kolkata 700032 India
- Academy of Scientific and Innovative Research (AcSIR)Indian Institute of Chemical Biology (CSIR-IICB) 4 Raja S. C. Mullick Road Kolkata 700032 India
| | - Saswati Adhikary
- Organic and Medicinal Chemistry DivisionIndian Institute of Chemical Biology (CSIR-IICB) 4 Raja S. C. Mullick Road Kolkata 700032 India
| | - Leena Majumder
- Organic and Medicinal Chemistry DivisionIndian Institute of Chemical Biology (CSIR-IICB) 4 Raja S. C. Mullick Road Kolkata 700032 India
| | - Saswati Ghosh
- Organic and Medicinal Chemistry DivisionIndian Institute of Chemical Biology (CSIR-IICB) 4 Raja S. C. Mullick Road Kolkata 700032 India
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24
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Sheng J, Liu J, Zhao H, Zheng L, Wei X. Metal-free synthesis of imidazo[1,5-a]pyridines via elemental sulfur mediated sequential dual oxidative Csp 3-H amination. Org Biomol Chem 2019; 16:5570-5574. [PMID: 30047971 DOI: 10.1039/c8ob01391h] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A simple and efficient approach has been developed for the synthesis of imidazo[1,5-a]pyridines using the elemental sulfur mediated sequential dual oxidative Csp3-H amination of 2-pyridyl acetates and amines under metal- and peroxide-free conditions. Broad substrate scope, operational simplicity and gram-scale ability make this chemistry very practical.
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Affiliation(s)
- Jie Sheng
- School of Chemistry and Chemical Engineering, Guangzhou University, Guangzhou 510006, P. R. China.
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25
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Sharma RK, Sharma A, Sharma S, Dutta S, Yadav S, Arora B. Design and Exploration of Catalytic Activity of Two-Dimensional Surface-Engineered Graphene Oxide Nanosheets in the Transannulation of N-Heterocyclic Aldehydes or Ketones with Alkylamines. ACS OMEGA 2019; 4:3146-3158. [PMID: 31459532 PMCID: PMC6648637 DOI: 10.1021/acsomega.8b02902] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/01/2018] [Accepted: 01/23/2019] [Indexed: 06/06/2023]
Abstract
In this work, pharmaceutically and biologically important compounds containing imidazo[1,5-a]pyridine nuclei have been synthesized via transannulation of N-heteroaryl aldehydes or ketones with alkylamines using a graphene oxide-supported copper catalyst. The nanocatalyst was fabricated by the covalent immobilization of 4-aminoantipyrine onto an amine-functionalized graphene oxide nanosupport followed by its metallation with copper acetate. Structural analysis by transmission electron microscopy, scanning electron microscopy, X-ray photoelectron spectroscopy (XPS), and X-ray diffraction demonstrates that the two-dimensional sheet-like structure of graphene oxide is maintained even after the chemical modifications, whereas XPS revealed crucial information related to elemental composition and surface electronic states of the metal present in the catalyst. Apart from this, Fourier transform infrared spectroscopy helped in identifying the degree of oxidation and the presence of oxygenated groups in graphene oxide nanocomposites. As a heterogeneous catalyst, this graphene oxide-supported copper complex showed moderate to good catalytic activity in the C(sp3)-H bond activation/amination of a variety of substrates. This superior catalytic performance originated from the unique 2-dimensional structure of graphene oxide-based material which provided space between graphitic overlayers due to appropriate positioning of metal on their basal planes, decreasing the diffusion resistances of reactant surfaces, thus making it function as a nanoreactor. More importantly, this nanomaterial could be recovered easily and reused repeatedly by simple washing without chemical treatment with no appreciable loss in its catalytic activity, showing good potential for increasing the overall turnover number of this synthetically useful catalyst.
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Affiliation(s)
- Rakesh K. Sharma
- Green Chemistry Network Centre, Department
of Chemistry, University of Delhi, New Delhi 110007, India
| | - Aditi Sharma
- Green Chemistry Network Centre, Department
of Chemistry, University of Delhi, New Delhi 110007, India
| | - Shivani Sharma
- Green Chemistry Network Centre, Department
of Chemistry, University of Delhi, New Delhi 110007, India
| | - Sriparna Dutta
- Green Chemistry Network Centre, Department
of Chemistry, University of Delhi, New Delhi 110007, India
| | - Sneha Yadav
- Green Chemistry Network Centre, Department
of Chemistry, University of Delhi, New Delhi 110007, India
| | - Bhavya Arora
- Green Chemistry Network Centre, Department
of Chemistry, University of Delhi, New Delhi 110007, India
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26
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Heterogeneous copper-catalyzed decarboxylative cyclization of 2-benzoylpyridines with α-amino acids leading to imidazo[1,5-a]pyridines. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2018.11.030] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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27
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Qian P, Yan Z, Zhou Z, Hu K, Wang J, Li Z, Zha Z, Wang Z. Electrocatalytic Intermolecular C(sp3)–H/N–H Coupling of Methyl N-Heteroaromatics with Amines and Amino Acids: Access to Imidazo-Fused N-Heterocycles. Org Lett 2018; 20:6359-6363. [DOI: 10.1021/acs.orglett.8b02578] [Citation(s) in RCA: 61] [Impact Index Per Article: 10.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Peng Qian
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zicong Yan
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhenghong Zhou
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Kangfei Hu
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Jiawei Wang
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhibin Li
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhenggen Zha
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
| | - Zhiyong Wang
- Hefei National Laboratory for Physical Sciences at Microscale, CAS Key Laboratory of Soft Matter Chemistry & Center for Excellence in Molecular Synthesis of Chinese Academy of Sciences, Collaborative Innovation Center of Suzhou Nano Science and Technology & School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui 230026, P. R. China
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28
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Synthesis of fused 3-amino-1,2,4-triazoles via sequential addition of aryl hydrazines to isothiocyanates and I 2 -mediated cyclodesulfurization. Tetrahedron 2018. [DOI: 10.1016/j.tet.2018.05.009] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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29
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Manna AK, Mondal J, Chandra R, Rout K, Patra GK. A thio-urea based chromogenic and fluorogenic chemosensor for expeditious detection of Cu2+, Hg2+ and Ag+ ions in aqueous medium. J Photochem Photobiol A Chem 2018. [DOI: 10.1016/j.jphotochem.2018.01.017] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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30
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Kuzu B, Genç H, Taşpinar M, Tan M, Menges N. An easy synthetic protocol for imidazo-1,4-oxazines and evaluation of their toxicities. HETEROATOM CHEMISTRY 2018. [DOI: 10.1002/hc.21412] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Burak Kuzu
- Pharmaceutical Chemistry Section; Faculty of Pharmacy; Van Yüzüncü Yil University; Van Turkey
- YYU TEKNOKENT, R&D Lab. SAFF Chemical Reagent; Van Turkey
| | - Hasan Genç
- Faculty of Education; Van Yüzüncü Yıl University; Van Turkey
| | | | - Meltem Tan
- Pharmaceutical Chemistry Section; Faculty of Pharmacy; Van Yüzüncü Yil University; Van Turkey
- YYU TEKNOKENT, R&D Lab. SAFF Chemical Reagent; Van Turkey
| | - Nurettin Menges
- Pharmaceutical Chemistry Section; Faculty of Pharmacy; Van Yüzüncü Yil University; Van Turkey
- YYU TEKNOKENT, R&D Lab. SAFF Chemical Reagent; Van Turkey
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31
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Mohbiya DR, Sekar N. Tuning ‘Stokes Shift’ and ICT Character by Varying the Donor Group in Imidazo[1,5 a]pyridines: A Combined Optical, DFT, TD-DFT and NLO Approach. ChemistrySelect 2018. [DOI: 10.1002/slct.201702579] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Affiliation(s)
- Dhanraj R. Mohbiya
- Dyestuff Technology Department; Institute of Chemical Technology; Nathalal Parekh Marg, Matunga Mumbai 400019 India
| | - Nagaiyan Sekar
- Dyestuff Technology Department; Institute of Chemical Technology; Nathalal Parekh Marg, Matunga Mumbai 400019 India
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32
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Dana S, Mandal T, Bhattacharyya A, Prasad E, Baidya M. Brønsted Acid-promoted Facile Synthesis of N-Fused Angular Imidazoquinolines. CHEM LETT 2018. [DOI: 10.1246/cl.170993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Suman Dana
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Tanumoy Mandal
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Ayan Bhattacharyya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Edamana Prasad
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
| | - Mahiuddin Baidya
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600036, Tamil Nadu, India
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33
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Han T, Wang Y, Li HL, Luo X, Deng WP. Synthesis of Polysubstituted 3-Aminothiophenes from Thioamides and Allenes via Tandem Thio-Michael Addition/Oxidative Annulation and 1,2-Sulfur Migration. J Org Chem 2018; 83:1538-1542. [DOI: 10.1021/acs.joc.7b02616] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Teng Han
- School of Pharmacy and Shanghai Key
Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Yu Wang
- School of Pharmacy and Shanghai Key
Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Hong-Liang Li
- School of Pharmacy and Shanghai Key
Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Xiaoyan Luo
- School of Pharmacy and Shanghai Key
Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
| | - Wei-Ping Deng
- School of Pharmacy and Shanghai Key
Laboratory of New Drug Design, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, China
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34
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Vivek Kumar S, Ellairaja S, Satheesh V, Sivasamy Vasantha V, Punniyamurthy T. Rh-Catalyzed regioselective C–H activation and C–C bond formation: synthesis and photophysical studies of indazolo[2,3-a]quinolines. Org Chem Front 2018. [DOI: 10.1039/c8qo00557e] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/24/2023]
Abstract
Rh(iii)-Catalyzed oxidative annulation of 2-aryl-2H-indazoles with alkynes and their photophysical studies are reported with high quantum yields.
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Affiliation(s)
| | | | - Vanaparthi Satheesh
- Department of Chemistry
- Indian Institute of Technology Guwahati
- Guwahati 781039
- India
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35
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Hu Z, Hou J, Liu J, Yu W, Chang J. Synthesis of imidazo[1,5-a]pyridines via I2-mediated sp3 C–H amination. Org Biomol Chem 2018; 16:5653-5660. [DOI: 10.1039/c8ob01501e] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A transition-metal-free sp3 C–H amination reaction has been developed employing molecular iodine for imidazo[1,5-a]pyridine synthesis.
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Affiliation(s)
- Zhiyuan Hu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Jiao Hou
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Jie Liu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Wenquan Yu
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
| | - Junbiao Chang
- College of Chemistry and Molecular Engineering
- Zhengzhou University
- Zhengzhou
- China
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36
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Bori J, Behera N, Mahata S, Manivannan V. Synthesis of Imidazo[5, 1- a
]isoquinoline and Its 3-Substituted Analogues Including the Fluorescent 3-(1-Isoquinolinyl)imidazo[5, 1- a
]isoquinoline. ChemistrySelect 2017. [DOI: 10.1002/slct.201702420] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Jugal Bori
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
| | - Nibedita Behera
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
| | - Satyajit Mahata
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
| | - Vadivelu Manivannan
- Department of Chemistry; Indian Institute of Technology Guwahati; Guwahati - 781039, Assam India
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37
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Singh D, Kumar V, Devi N, Malakar CC, Shankar R, Singh V. Metal-free Decarboxylative Amination: An Alternative Approach Towards Regioselective Synthesis of β-CarbolineN-fused Imidazoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600970] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Dharmender Singh
- Department of Chemistry; National Institute of Technology (NIT); Jalandhar 144011 Punjab India
| | - Vipin Kumar
- Department of Chemistry; National Institute of Technology (NIT); Jalandhar 144011 Punjab India
| | - Nisha Devi
- Department of Chemistry; National Institute of Technology (NIT); Jalandhar 144011 Punjab India
| | - Chandi C. Malakar
- Department of Chemistry; National Institute of Technology (NIT) Manipur; Imphal 795004 Manipur India
| | - Ravi Shankar
- Bio-Organic Chemistry Division; CSIR - Indian Institute of Integrative Medicine (IIIM); Jammu 180001 India
| | - Virender Singh
- Department of Chemistry; National Institute of Technology (NIT); Jalandhar 144011 Punjab India
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38
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Sheng H, Zeng R, Wang W, Luo S, Feng Y, Liu J, Chen W, Zhu M, Guo Q. An Efficient Heterobimetallic Lanthanide Alkoxide Catalyst for Transamidation of Amides under Solvent-Free Conditions. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201600373] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Hongting Sheng
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Ruijie Zeng
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Wenjuan Wang
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Shuwen Luo
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Yan Feng
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Jing Liu
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Weijian Chen
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Manzhou Zhu
- School of Chemistry and Chemical Engineering & Center for Atomic Engineering of Advanced Materials; Anhui University; Hefei 230039 People's Republic of China
| | - Qingxiang Guo
- Department of Chemistry; University of Science and Technology of China; Hefei 230026 People's Republic of China
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39
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Koto Y, Shibahara F, Murai T. Imidazo[1,5-a]pyridin-3-ylidenes as π-accepting carbene ligands: substituent effects on properties of N-heterocyclic carbenes. Org Biomol Chem 2017; 15:1810-1820. [DOI: 10.1039/c6ob02827f] [Citation(s) in RCA: 36] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Imidazo[1,5-a]pyridine-derived NHCs gained strong π-accepting character due to their structural features.
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Affiliation(s)
- Yuma Koto
- Department of Chemistry and Molecular Science
- Faculty of Engineering
- Gifu University
- Gifu 501-1193
- Japan
| | - Fumitoshi Shibahara
- Department of Chemistry and Molecular Science
- Faculty of Engineering
- Gifu University
- Gifu 501-1193
- Japan
| | - Toshiaki Murai
- Department of Chemistry and Molecular Science
- Faculty of Engineering
- Gifu University
- Gifu 501-1193
- Japan
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40
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Development of 1-aryl-3-furanyl/thienyl-imidazopyridine templates for inhibitors against hypoxia inducible factor (HIF)-1 transcriptional activity. Bioorg Med Chem Lett 2016; 26:5887-5890. [DOI: 10.1016/j.bmcl.2016.11.009] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/14/2016] [Revised: 11/02/2016] [Accepted: 11/04/2016] [Indexed: 01/23/2023]
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41
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Koto Y, Shibahara F, Murai T. 1-Substituted-imidazo[1,5-a]pyridin-3-ylidenes as Highly Efficient Ligands for Rh- and Ir-catalyzed Transfer Hydrogenation of Carbonyl Compounds. CHEM LETT 2016. [DOI: 10.1246/cl.160740] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
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42
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Tan Z, Zhao H, Zhou C, Jiang H, Zhang M. Aerobic Copper-Catalyzed Halocyclization of Methyl N-Heteroaromatics with Aliphatic Amines: Access to Functionalized Imidazo-Fused N-Heterocycles. J Org Chem 2016; 81:9939-9946. [PMID: 27690442 DOI: 10.1021/acs.joc.6b02117] [Citation(s) in RCA: 43] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Abstract
A new aerobic copper-catalyzed halocyclization reaction of methyl N-heteroaromatics and aliphatic amines has been developed, which enables straightforward access to functionalized imidazo-fused N-heterocycles with the merits of good functional tolerance, use of easily available copper salts as the catalysts, lithium halides as the halogen sources, and O2 as a sole oxidant. Due to the reaction features' selective introduction of halogen functionalities to the newly formed imidazo ring, further extensions of the developed chemistry toward synthetic diversity, including effective access to functional materials, are easily envisioned.
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Affiliation(s)
- Zhenda Tan
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
| | - He Zhao
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
| | - Changjian Zhou
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
| | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology , Guangzhou 510641, China
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43
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Domingo V, Prieto C, Silva L, Rodilla JML, Quílez del Moral JF, Barrero AF. Iodine, a Mild Reagent for the Aromatization of Terpenoids. JOURNAL OF NATURAL PRODUCTS 2016; 79:831-837. [PMID: 26913544 DOI: 10.1021/acs.jnatprod.5b00914] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/05/2023]
Abstract
Efficient procedures based on the use of iodine for the aromatization of a series of terpenoids possessing diene and homoallylic or allylic alcohol functionalities are described. Different examples are reported as a proof-of-concept study. Furthermore, iodine also proved to mediate the dehydrogenation of testosterone.
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Affiliation(s)
- Victoriano Domingo
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada , Avenida Fuentenueva, 18071 Granada, Spain
| | - Consuelo Prieto
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada , Avenida Fuentenueva, 18071 Granada, Spain
| | - Lucia Silva
- FibEnTech-Materiais Fibrosos e Tecnologias Ambientais, Department of Chemistry, University of Beira Interior , Rua Marquês d'Ávila e Bolama, 6200 Covilhã, Portugal
| | - Jesús M L Rodilla
- FibEnTech-Materiais Fibrosos e Tecnologias Ambientais, Department of Chemistry, University of Beira Interior , Rua Marquês d'Ávila e Bolama, 6200 Covilhã, Portugal
| | - José F Quílez del Moral
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada , Avenida Fuentenueva, 18071 Granada, Spain
| | - Alejandro F Barrero
- Department of Organic Chemistry, Institute of Biotechnology, University of Granada , Avenida Fuentenueva, 18071 Granada, Spain
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44
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Wang H, Xu W, Xin L, Liu W, Wang Z, Xu K. Synthesis of 1,3-Disubstituted Imidazo[1,5-a]pyridines from Amino Acids via Catalytic Decarboxylative Intramolecular Cyclization. J Org Chem 2016; 81:3681-7. [DOI: 10.1021/acs.joc.6b00343] [Citation(s) in RCA: 62] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Huiqiao Wang
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Wentao Xu
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Lilan Xin
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Wenmin Liu
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Zhiqiang Wang
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
| | - Kun Xu
- College of Chemistry and
Pharmaceutical Engineering, Nanyang Normal University, Nanyang, Henan 473061, P. R. China
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45
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Joshi A, Mohan DC, Adimurthy S. Copper-Catalyzed Denitrogenative Transannulation Reaction of Pyridotriazoles: Synthesis of Imidazo[1,5-a]pyridines with Amines and Amino Acids. Org Lett 2016; 18:464-7. [PMID: 26765974 DOI: 10.1021/acs.orglett.5b03509] [Citation(s) in RCA: 81] [Impact Index Per Article: 10.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The copper-catalyzed aerobic oxidative synthesis of imidazo[1,5-a]pyridines via cascade denitrogenative transannulation reaction of pyridotriazoles with benzylamines with good functional group tolerance is developed. The present methodology is also applicable to amino acids to obtain imidazo[1,5-a]pyridines via decarboxylative oxidative cyclization.
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Affiliation(s)
- Abhisek Joshi
- Academy of Scientific & Innovative Research, CSIR-Central Salt & Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, Gujarat, India
| | - Darapaneni Chandra Mohan
- Academy of Scientific & Innovative Research, CSIR-Central Salt & Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, Gujarat, India
| | - Subbarayappa Adimurthy
- Academy of Scientific & Innovative Research, CSIR-Central Salt & Marine Chemicals Research Institute, G. B. Marg, Bhavnagar-364 002, Gujarat, India
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46
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M. El-Abadelah M, A. Hodali H, S. Zreid M, F. Awwadi F, M. Abadleh M, Voelter W. A Convenient Synthetic Route for Substituted 1-(Aryldiazenyl)Imidazo[1,5-a]Pyridine. HETEROCYCLES 2016. [DOI: 10.3987/com-16-13499] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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47
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Xie Z, Peng J, Zhu Q. Copper-mediated C(sp3)–H amination in a multiple C–N bond-forming strategy for the synthesis of N-heterocycles. Org Chem Front 2016. [DOI: 10.1039/c5qo00313j] [Citation(s) in RCA: 26] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A three-component reaction for the construction of imidazo[1,5-a]pyridines through copper-promoted C(sp3)–H amination has been developed.
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Affiliation(s)
- Zeqiang Xie
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Jiangling Peng
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
| | - Qiang Zhu
- State Key Laboratory of Respiratory Disease
- Guangzhou Institutes of Biomedicine and Health
- Chinese Academy of Sciences
- Guangzhou 510530
- China
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48
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Nguyen HTH, Nguyen OTK, Truong T, Phan NTS. Synthesis of imidazo[1,5-a]pyridines via oxidative amination of the C(sp3)–H bond under air using metal–organic framework Cu-MOF-74 as an efficient heterogeneous catalyst. RSC Adv 2016. [DOI: 10.1039/c6ra00852f] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
1,3-Diarylated imidazo[1,5-a]pyridines were synthesized via oxidative amination of the C(sp3)–H bond using Cu-MOF-74 as an efficient heterogeneous catalyst.
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Affiliation(s)
- Hanh T. H. Nguyen
- Department of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Oanh T. K. Nguyen
- Department of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Thanh Truong
- Department of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
| | - Nam T. S. Phan
- Department of Chemical Engineering
- HCMC University of Technology
- VNU-HCM
- Ho Chi Minh City
- Vietnam
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49
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Wu YD, Geng X, Gao Q, Zhang J, Wu X, Wu AX. Iodine-promoted sequential dual oxidative Csp3–H amination/Csp3–H iodination reactions: efficient synthesis of 1-iodoimidazo[1,5-a]pyridines. Org Chem Front 2016. [DOI: 10.1039/c6qo00313c] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
An iodine-promoted sequential dual oxidative Csp3–H amination of aryl methyl ketones and Csp3–H iodination of pyridin-2-ylmethanamines have been realized for the first time. This simple and efficient approach constructed 1-iodoimidazo[1,5-a]pyridines in moderate to good yields.
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Affiliation(s)
- Yan-Dong Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Xiao Geng
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Qinghe Gao
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Jingjing Zhang
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Xia Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
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50
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Domingo V, Prieto C, Castillo A, Silva L, Quílez del Moral JF, Barrero AF. Iodine-Promoted Metal-Free Aromatization: Synthesis of Biaryls, Oligop-Phenylenes and A-Ring Modified Steroids. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201500303] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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