51
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Arias-Gómez A, Godoy A, Portilla J. Functional Pyrazolo[1,5- a]pyrimidines: Current Approaches in Synthetic Transformations and Uses As an Antitumor Scaffold. Molecules 2021; 26:2708. [PMID: 34063043 PMCID: PMC8125733 DOI: 10.3390/molecules26092708] [Citation(s) in RCA: 36] [Impact Index Per Article: 12.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/23/2021] [Revised: 04/26/2021] [Accepted: 04/27/2021] [Indexed: 12/29/2022] Open
Abstract
Pyrazolo[1,5-a]pyrimidine (PP) derivatives are an enormous family of N-heterocyclic compounds that possess a high impact in medicinal chemistry and have attracted a great deal of attention in material science recently due to their significant photophysical properties. Consequently, various researchers have developed different synthesis pathways for the preparation and post-functionalization of this functional scaffold. These transformations improve the structural diversity and allow a synergic effect between new synthetic routes and the possible applications of these compounds. This contribution focuses on an overview of the current advances (2015-2021) in the synthesis and functionalization of diverse pyrazolo[1,5-a]pyrimidines. Moreover, the discussion highlights their anticancer potential and enzymatic inhibitory activity, which hopefully could lead to new rational and efficient designs of drugs bearing the pyrazolo[1,5-a]pyrimidine core.
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Affiliation(s)
| | | | - Jaime Portilla
- Bioorganic Compounds Research Group, Department of Chemistry, Universidad de los Andes, Carrera 1 No. 18A-10, Bogotá 111711, Colombia; (A.A.-G.); (A.G.)
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52
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Xin W, Guo S, Zhang Y, Zhang Z, Zhang G, Ye Y, Sun K. Metal‐Free, organic selenium enabled radical relay azidation‐carbocyclization. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100208] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Sa Guo
- Henan Normal University CHINA
| | | | - Zhiguo Zhang
- Key Laboratory of Green Chemical Media and Reactions, Ministry of Education CHINA
| | | | | | - Kai Sun
- Anyang Normal University CHINA
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53
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Meng Y, Zhu W, Song Y, Bu G, Zhang L, Xu F. Rhodium(III)‐Catalyzed Oxidative Annulation of Amidines with Alkynes
via
Sequential C−H Bond Activation. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001634] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Yan‐Yu Meng
- Department of College of Science Henan Agricultural University Zhengzhou 450002 P. R. China
| | - Wen‐Jing Zhu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Yuan‐Yuan Song
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Gang‐Gang Bu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Li‐Juan Zhang
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
| | - Fen Xu
- Department of Material and Chemical Engineering Zhengzhou University of Light Industry Zhengzhou 450002 P. R. China
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54
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Meng X, Wu D, Zhang Y, Zhao Y. PPTS‐Catalyzed Bicyclization Reaction of 2‐Isocyanobenzaldehydes with Various Amines: Synthesis of Diverse Fused Quinazolines. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202001512] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Xiang‐He Meng
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Faculty of Chemistry Northeast Normal University Changchun 130024 People's Republic of China
| | - Dan‐Ni Wu
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Faculty of Chemistry Northeast Normal University Changchun 130024 People's Republic of China
| | - Yu‐Jia Zhang
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Faculty of Chemistry Northeast Normal University Changchun 130024 People's Republic of China
| | - Yu‐Long Zhao
- Jilin Province Key Laboratory of Organic Functional Molecular Design & Synthesis Faculty of Chemistry Northeast Normal University Changchun 130024 People's Republic of China
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55
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Singh M, Yadav VB, Ansari MD, Malviya M, Siddiqui IR. Efficient one-pot synthesis of substituted diphenyl 1, 3-thiazole through multicomponent reaction by using green and efficient Iron-catalyst via Cross-Dehydrogenative Coupling(CDC). Mol Divers 2021; 26:843-848. [PMID: 33559099 DOI: 10.1007/s11030-021-10191-w] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2020] [Accepted: 01/23/2021] [Indexed: 10/22/2022]
Abstract
A clean and efficient, multi-component strategy for the synthesis of biologically important trisubstituted thiazole via the reaction of readily available barbituric acid, acetophenone, and aryl thioamides is reported in the presence of FeCl3.6H2O / O2(Air) in DMF solvent. The advantages of the present methodology include a one-pot reaction, environment-friendly approach, cost-effectiveness, broad substrate scope, operational simplicity, short reaction time, easy workup procedure, and high yields.
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Affiliation(s)
- Manjit Singh
- Department of Chemistry IIT BHU, Varanasi, India
| | - Vijay B Yadav
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211001, India
| | - Mohd Danish Ansari
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211001, India
| | | | - I R Siddiqui
- Laboratory of Green Synthesis, Department of Chemistry, University of Allahabad, Prayagraj, 211001, India.
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56
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N,N‐ and N,O‐6‐membered Ring
peri
‐Annelation in Naphthalene. Is it a Heteroring or merely a
peri
‐ Heterobridge? ChemistrySelect 2021. [DOI: 10.1002/slct.202004237] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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57
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Ma WY, Gelis C, Bouchet D, Retailleau P, Moreau X, Neuville L, Masson G. Chiral Phosphoric Acid-Catalyzed Enantioselective Construction of 2,3-Disubstituted Indolines. Org Lett 2021; 23:442-448. [DOI: 10.1021/acs.orglett.0c03947] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Wei-Yang Ma
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 av. de la Terrasse, Gif-sur-Yvette 91198 Cedex France
| | - Coralie Gelis
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 av. de la Terrasse, Gif-sur-Yvette 91198 Cedex France
| | - Damien Bouchet
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 av. de la Terrasse, Gif-sur-Yvette 91198 Cedex France
| | - Pascal Retailleau
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 av. de la Terrasse, Gif-sur-Yvette 91198 Cedex France
| | - Xavier Moreau
- Institut Lavoisier Versailles, UMR CNRS 8180, Université de Versailles-St-Quentin-en-Yvelines, Université Paris-Saclay, Versailles, France
| | - Luc Neuville
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 av. de la Terrasse, Gif-sur-Yvette 91198 Cedex France
| | - Géraldine Masson
- Institut de Chimie des Substances Naturelles, CNRS UPR 2301, Université Paris-Sud, Université Paris-Saclay, 1 av. de la Terrasse, Gif-sur-Yvette 91198 Cedex France
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58
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Singh RR, Singh TP, Singh NP, Naorem SS, Singh OM. Synthesis of Green/Blue Light Emitting Quinolines by Aza-D-A Reaction Using InCl 3 Catalyst. J Fluoresc 2021; 31:247-257. [PMID: 33219402 PMCID: PMC7679117 DOI: 10.1007/s10895-020-02647-3] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/08/2020] [Accepted: 10/30/2020] [Indexed: 12/27/2022]
Abstract
An efficient InCl3-catalyzed sequential reaction of aromatic amines, aromatic aldehydes and functionalized alkynes leading to the formation of new quinoline derivatives exhibiting significant fluorescence activities is described. The photophysical investigations of quinolines were carried out by absorption and photoluminescence measurements. One particular compound 4 h having maximum intensity, emitting green colour (Φ = 0.78) with average life time of 6.20 ns was the best amongst the tested compounds. The presence of the amino group at the 4-aryl substituent of the quinoline backbone played an important role in executing the Povarov cyclization successfully and enhancing the flourescence properties of the newly synthesized quinolines.
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59
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Rao RN, Chanda K. An expeditious microwave assisted one-pot sequential route to pyrido fused imidazo[4,5- c] quinolines in green media. NEW J CHEM 2021. [DOI: 10.1039/d0nj05835a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
A novel one-pot sequential route for the synthesis of pyrido[2′,1′:2,3]imidazo[4,5-c]quinolines via microwave-assisted sequential reaction of 2-aminopyridines, 2-bromophenacyl bromides, and aldehydes has been developed in green media.
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Affiliation(s)
- Ramdas Nishanth Rao
- Department of Chemistry
- School of Advanced Science
- Vellore Institute of Technology
- Vellore-632014
- India
| | - Kaushik Chanda
- Department of Chemistry
- School of Advanced Science
- Vellore Institute of Technology
- Vellore-632014
- India
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60
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Kudale VS, Mutra MR, Chu CP, Wang JJ. Unusual C 3-acetylation of quinoxalin-2(1 H)-one via oxidative C-C and C-O bond cleavages of PEG-400. Org Biomol Chem 2021; 19:5567-5571. [PMID: 34081068 DOI: 10.1039/d1ob00769f] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Aerobic oxidative tandem conversion of PEG-400 to acetyl radical via C-C and C-O bond cleavages followed by silver-catalyzed menisci-type addition to the C3 position of quinoxalin-2(1H)-one is described. This reaction involves the in situ formation of the acetyl radical from PEG-400 via a sequence of acetaldehyde, 2-oxopropanal and, 2-oxopropanoic acid formation and successive oxidative cleavage to form the acetyl radical. This protocol uses cheap, readily available and environmentally-friendly PEG-400 as the acetyl source and solvent. The in situ generated acetyl radicals from PEG-400 have been coupled to a broad range of electron-deficient quinoxalin-2(1H)-one compounds in a menisci-type reaction.
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Affiliation(s)
- Vishal Suresh Kudale
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan.
| | - Mohana Reddy Mutra
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan.
| | - Ching-Piao Chu
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan.
| | - Jeh-Jeng Wang
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, No. 100, Shiquan 1st Rd, Sanmin District, Kaohsiung City, 807, Taiwan. and Department of Medical Research, Kaohsiung Medical University Hospital, No. 100, Tzyou 1st Rd, Sanmin District, Kaohsiung City 807, Taiwan
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61
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Rong W, Zhang T, Li T, Li J. Theoretical study of rhodium- and cobalt-catalyzed decarboxylative transformations of isoxazolones: origin of product selectivity. Org Chem Front 2021. [DOI: 10.1039/d0qo01498b] [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
DFT calculations were performed to elucidate the origins of catalyst-controlled product selectivity in the decarboxylative transformations of isoxazolones.
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Affiliation(s)
- Wei Rong
- Department of Chemistry
- Jinan University
- Guangzhou
- P. R. China
| | - Tian Zhang
- Department of Chemistry
- Jinan University
- Guangzhou
- P. R. China
| | - Ting Li
- Department of Chemistry
- Jinan University
- Guangzhou
- P. R. China
| | - Juan Li
- Department of Chemistry
- Jinan University
- Guangzhou
- P. R. China
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62
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Varlet T, Masson G. Enamides and dienamides in phosphoric acid-catalysed enantioselective cycloadditions for the synthesis of chiral amines. Chem Commun (Camb) 2021; 57:4089-4105. [DOI: 10.1039/d1cc00590a] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
This feature article describes how enamides and dienamides can participate in chiral phosphoric acid catalyzed enantioselective cycloadditions to prepare a wide range of cyclic amines.
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Affiliation(s)
- Thomas Varlet
- Université Paris-Saclay
- Institut de Chimie des Substances Naturelles
- ICSN-CNRS UPR 2301
- 91198 Gif-sur-Yvette
- France
| | - Géraldine Masson
- Université Paris-Saclay
- Institut de Chimie des Substances Naturelles
- ICSN-CNRS UPR 2301
- 91198 Gif-sur-Yvette
- France
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63
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Organic Azides: Versatile Synthons in Transition Metal‐Catalyzed C(
sp
2
)−H Amination/Annulation for N‐Heterocycle Synthesis. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202001168] [Citation(s) in RCA: 18] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
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64
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Chu Y, Bi S, Wu X, Jiang Y, Liu Y, Ling B, Yuan XA. Mechanism, bonding nature of metal-nitrenoid, and selectivity for a nitrene-participating three-component carboamination of dienes: A DFT study. MOLECULAR CATALYSIS 2020. [DOI: 10.1016/j.mcat.2020.111222] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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65
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Truong CC, Ngo HL. Sustainable synthesis of nitrogen heterocycles from carbon dioxide and aromatic amines over heterogeneous catalysts. J CO2 UTIL 2020. [DOI: 10.1016/j.jcou.2020.101325] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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66
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Chai K, Shi Y, Wang Y, Zou P, Yuan Q, Xu W, Zhang P. Visible light-driven oxidative coupling of dibenzylamine and substituted anilines with a 2D WSe 2 nanomesh material. NANOSCALE 2020; 12:21869-21878. [PMID: 33107549 DOI: 10.1039/d0nr05128d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
A novel 2D WSe2 nanomesh material was synthesized with a 3D SBA-15 mesoporous material via a nanocasting strategy. The formation of the 2D sheet-like nanomesh structure of WSe2 inside a 3D confined pore space is mainly attributed to the synergistic effect arising from the crystal self-limitation growth caused by the layered crystal structure of the WSe2 material and to the space-limitation effect coming from the unique pore structure of the SBA-15 template. The 2D WSe2 nanomesh material possesses extremely high exposure of crystal layer edges, making it an excellent photocatalyst. It shows good visible light-driven photocatalytic performance in oxidative coupling of dibenzylamine and 2-amino/hydroxy/mercaptoanilines to prepare a group of heterocyclic compounds, including benzimidazoles, benzoxazoles and benzothiazoles with oxygen as the sole oxidant. A gram-scale experiment was also carried out to exhibit the scope of this method.
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Affiliation(s)
- Kejie Chai
- College of Material, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China.
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67
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Kankala S, Rama KR, Kesari C, Björkling F, Nerella S, Gundepaka P, Guguloth H, Thota N. Synthesis of novel fluorophenylpyrazole-picolinamide derivatives and determination of their anticancer activity. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1791341] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
| | - Koteshwar Rao Rama
- Department of Chemistry, Mewar University, Chittorgarh, Rajasthan, India
| | - Chekrapani Kesari
- Department of Chemistry, Mewar University, Chittorgarh, Rajasthan, India
| | - Fredrik Björkling
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
| | - Srinivas Nerella
- Department of Chemistry, Kakatiya University, Warangal, Telangana, India
| | - Prasad Gundepaka
- Centre for Pharmaceutical Science, Institute of Science and Technology, JNTU, Hyderabad, India
| | - Hanmanthu Guguloth
- Department of Chemistry, Kakatiya University, Warangal, Telangana, India
| | - Niranjan Thota
- Department of Drug Design and Pharmacology, Faculty of Health and Medical Sciences, University of Copenhagen, Copenhagen, Denmark
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68
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Feng J, Li R, Zhang S, Bu Y, Chen Y, Cui Y, Lin B, Chen Y, Tao Y, Wu B. Bioretrosynthesis of Functionalized N-Heterocycles from Glucose via One-Pot Tandem Collaborations of Designed Microbes. ADVANCED SCIENCE (WEINHEIM, BADEN-WURTTEMBERG, GERMANY) 2020; 7:2001188. [PMID: 32995125 PMCID: PMC7507072 DOI: 10.1002/advs.202001188] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 05/29/2020] [Indexed: 05/10/2023]
Abstract
The design of multistrain systems has markedly expanded the prospects of using long biosynthetic pathways to produce natural compounds. However, the cooperative use of artificially engineered microbes to synthesize xenobiotic chemicals from renewable carbohydrates is still in its infancy. Here, a microbial system is developed for the production of high-added-value N-heterocycles directly from glucose. Based on a retrosynthetic analysis, eleven genes are selected, systematically modulated, and overexpressed in three Escherichia coli strains to construct an artificial pathway to produce 5-methyl-2-pyrazinecarboxylic acid, a key intermediate in the production of the important pharmaceuticals Glipizide and Acipimox. Via one-pot tandem collaborations, the designed microbes remarkably realize high-level production of 5-methyl-2-pyrazinecarboxylic acid (6.2 ± 0.1 g L-1) and its precursor 2,5-dimethylpyrazine (7.9 ± 0.7 g L-1). This study is the first application of cooperative microbes for the total biosynthesis of functionalized N-heterocycles and provides new insight into integrating bioretrosynthetic principles with synthetic biology to perform complex syntheses.
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Affiliation(s)
- Jing Feng
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
- University of Chinese Academy of SciencesBeijingChina
| | - Ruifeng Li
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
- University of Chinese Academy of SciencesBeijingChina
| | - Shasha Zhang
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
- University of Chinese Academy of SciencesBeijingChina
| | - Yifan Bu
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
- University of Chinese Academy of SciencesBeijingChina
| | - Yanchun Chen
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
- University of Chinese Academy of SciencesBeijingChina
| | - Yinglu Cui
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
| | - Baixue Lin
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
| | - Yihua Chen
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
| | - Yong Tao
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
| | - Bian Wu
- CAS Key Laboratory of Microbial Physiological and Metabolic EngineeringState Key Laboratory of Microbial ResourcesInstitute of MicrobiologyChinese Academy of SciencesBeijing100101P. R. China
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69
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Karimian A, Rad MS, Mahdavi E.
CoNiFe
2
O
4
@
Silica‐SO
3
H
nanoparticles: New recyclable magnetic nanocatalyst for the one‐pot synthesis of 3,4‐dihydropyrimidin‐2(
1
H
)‐ones/thiones under solvent‐free conditions. J CHIN CHEM SOC-TAIP 2020. [DOI: 10.1002/jccs.202000229] [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)
- Azam Karimian
- Department of Chemistry, Faculty of Sciences University of Gonabad Gonabad Iran
| | - Masoud Saadati Rad
- Department of Chemistry, Faculty of Sciences University of Gonabad Gonabad Iran
| | - Elham Mahdavi
- Department of Chemistry, Faculty of Sciences University of Gonabad Gonabad Iran
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70
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Jiao Y, Chen A, Yu B, Huang H. Brønsted Acid Catalyzed Cyclization of Aminodiazoesters with Aldehydes to 3-Carboxylate- N-Heterocycles. Org Lett 2020; 22:6031-6034. [PMID: 32790426 DOI: 10.1021/acs.orglett.0c02125] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A Brønsted acid catalyzed cyclization of aminodiazoesters with aldehydes is described. This reaction features broad substrate generality and functional group compatibility, affording a wide range of 5-7-membered 3-carboxylate-N-heterocycles containing different functional groups. The title products are able to be further elaborated through simple functional group transformations to produce synthetically useful N-heterocycles.
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Affiliation(s)
- Yang Jiao
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Anrong Chen
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Bangkui Yu
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China
| | - Hanmin Huang
- Hefei National Laboratory for Physical Sciences at the Microscale and Department of Chemistry, University of Science and Technology of China, Hefei, 230026, P. R. China.,Center for Excellence in Molecular Synthesis of CAS, Hefei, 230026, P. R. China
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71
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Selective CO2 adsorption and Lewis acid catalytic activity towards naphthimidazole synthesis by a Zn-MOF. Polyhedron 2020. [DOI: 10.1016/j.poly.2020.114584] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
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72
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Liu R, Zhang T, Huang B, Cai M. Recyclable and reusable PdCl 2(PPh 3) 2/PEG-400/H 2O system for the hydrophenylation of alkynes with sodium tetraphenylborate. JOURNAL OF CHEMICAL RESEARCH 2020. [DOI: 10.1177/1747519820934379] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
A stable and efficient PdCl2(PPh3)2/PEG-400/H2O catalytic system for the hydrophenylation reaction of alkynes has been developed. In the presence of 3 mol% PdCl2(PPh3)2 and 2 equiv. of HOAc, the hydrophenylation of both terminal and internal alkynes with sodium tetraphenylborate proceeded smoothly in a mixture of PEG-400 and water at room temperature or 50 °C to afford a variety of phenyl-substituted alkenes in moderate to high yields. The isolation of the products was easily performed by extraction with petroleum ether, and the PdCl2(PPh3)2/PEG-400/H2O system could be readily recycled and reused six times without apparent loss of catalytic activity.
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Affiliation(s)
- Rong Liu
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and Department of Chemistry, Jiangxi Normal University, Nanchang, P.R. China
| | - Tingli Zhang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and Department of Chemistry, Jiangxi Normal University, Nanchang, P.R. China
| | - Bin Huang
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and Department of Chemistry, Jiangxi Normal University, Nanchang, P.R. China
| | - Mingzhong Cai
- Key Laboratory of Functional Small Organic Molecule, Ministry of Education and Department of Chemistry, Jiangxi Normal University, Nanchang, P.R. China
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73
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Neogi S, Ghosh AK, Majhi K, Samanta S, Kibriya G, Hajra A. Organophotoredox-Catalyzed Direct C-H Amination of 2 H-Indazoles with Amines. Org Lett 2020; 22:5605-5609. [PMID: 32578430 DOI: 10.1021/acs.orglett.0c01973] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A general and practical method for the direct C-H amination of 2H-indazoles with a series of amines including aliphatic primary amines, secondary amines, azoles, and sulfoximines via organophotoredox-catalyzed oxidative coupling has been disclosed at room temperature under ambient air conditions. Additionally, this protocol is used for free aminated 2H-indazole synthesis. A mechanistic study revealed that a single electron transfer (SET) pathway might be involved in this reaction.
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Affiliation(s)
- Sukanya Neogi
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Asim Kumar Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Koushik Majhi
- Integrated Science Education & Research Centre, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Sadhanendu Samanta
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Golam Kibriya
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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74
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Micellar catalysis enabled synthesis of indolylbenzothiazoles and their functionalization via Mn(II)-catalyzed C2–H amination using pyridones. Tetrahedron Lett 2020. [DOI: 10.1016/j.tetlet.2020.152017] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
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75
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Dong Y, Clarke RM, Porter GJ, Betley TA. Efficient C–H Amination Catalysis Using Nickel-Dipyrrin Complexes. J Am Chem Soc 2020; 142:10996-11005. [DOI: 10.1021/jacs.0c02126] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Yuyang Dong
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Ryan M. Clarke
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Gerard J. Porter
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
| | - Theodore A. Betley
- Department of Chemistry and Chemical Biology, Harvard University, 12 Oxford Street, Cambridge, Massachusetts 02138, United States
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76
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Wang Y, Fang Z, Chen X, Wang Y. Dirhodium(II)-Catalyzed C(sp 2 )-H Azidation of Benzaldehydes. Chemistry 2020; 26:6805-6811. [PMID: 32045045 DOI: 10.1002/chem.201905855] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Indexed: 12/12/2022]
Abstract
Multiple steps are needed to achieve the C-H functional of aromatic aldehyde, since the C-H functional reaction usually occurs preferentially at the aldehydic C-H bond over the aryl C-H bond. We report an efficient azidation method mediated by dirhodium(II) catalysts to achieve the direct aryl azidation of aromatic aldehydes avoiding the simultaneous use of protected aldehydes and prefunctionalized arenes. The regioselectivity of this method is similar to those of typical aromatic electrophilic substitution reactions. The resulting azidobenzaldehyde products are versatile building blocks or precursors for the synthesis of many biologically active compounds. The mechanism studies indicate that the one-electron oxidative intermediate Rh2 (II,III) N3 is responsible for the azide transfer.
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Affiliation(s)
- Yi Wang
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Zaixiang Fang
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Xiaochuan Chen
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
| | - Yuanhua Wang
- College of Chemistry, Sichuan University, Chengdu, 610064, P. R. China
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77
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Pan L, Jin F, Fu R, Gao K, Zhou S, Bao X. Oxidative Ring-Opening of 1H
-Pyrazol-5-amines and Its Application in Constructing Pyrazolo-Pyrrolo-Pyrazine Scaffolds by Domino Cyclization. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000265] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lei Pan
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren-Ai Road, Suzhou Industrial Park 215123 Suzhou Jiangsu China
| | - Feng Jin
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren-Ai Road, Suzhou Industrial Park 215123 Suzhou Jiangsu China
| | - Rui Fu
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren-Ai Road, Suzhou Industrial Park 215123 Suzhou Jiangsu China
| | - Ke Gao
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren-Ai Road, Suzhou Industrial Park 215123 Suzhou Jiangsu China
| | - Shaofang Zhou
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren-Ai Road, Suzhou Industrial Park 215123 Suzhou Jiangsu China
| | - Xiaoguang Bao
- College of Chemistry, Chemical Engineering and Materials Science; Soochow University; 199 Ren-Ai Road, Suzhou Industrial Park 215123 Suzhou Jiangsu China
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78
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Kaur N, Verma Y, Grewal P, Ahlawat N, Bhardwaj P, Jangid NK. Photochemical C–N bond forming reactions for the synthesis of five-membered fused N-heterocycles. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1713378] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- Navjeet Kaur
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Yamini Verma
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pooja Grewal
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Neha Ahlawat
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
| | - Pranshu Bhardwaj
- Department of Chemistry, Banasthali Vidyapith, Banasthali, India
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79
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Kripalaya Ratheesh A, Karnam Jayarampillai RP. Acid‐Promoted Hetero Annulation: An Expeditious Route to Construct Functionalized Pyrido‐ and Pyrimido[5′,4′:5,6]pyrido‐ Fused [
a
]Carbazoles. ChemistrySelect 2020. [DOI: 10.1002/slct.202000281] [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]
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80
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Greener Synthesis of Nitrogen-Containing Heterocycles in Water, PEG, and Bio-Based Solvents. Catalysts 2020. [DOI: 10.3390/catal10040429] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The solvents used in chemistry are a fundamental element of the environmental performance of processes in corporate and academic laboratories. Their influence on costs, health safety, and nature cannot be neglected. Quantitatively, solvents are the most abundant constituents of chemical transformations; therefore, acting on solvents and replacing standard solvents with safer products can have a great ecological impact. However, not all green solvents are suitable for the wide scope of organic chemistry reactions. A second point to consider is that 50% of pharmaceutical drugs are nitrogen heterocycles compounds. It therefore appeared important to provide an overview of the more ecological methodologies for synthesizing this class of compounds. In this review, all publications since 2000 that describe green reactions leading to the formation of nitrogen heterocycles using safe solvents were considered. We chose water, PEG, and bio-based solvents for their negligible toxicity. The synthesis of five-, six-, and seven-membered aromatic nitrogen heterocycles using green reactions reported in the literature to date is described.
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81
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Khake SM, Chatani N. The Direct Rh(III)-Catalyzed C–H Amidation of Aniline Derivatives Using a Pyrimidine Directing Group: The Selective Solvent Controlled Synthesis of 1,2-Diaminobenzenes and Benzimidazoles. Org Lett 2020; 22:3655-3660. [DOI: 10.1021/acs.orglett.0c01126] [Citation(s) in RCA: 26] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Shrikant M. Khake
- Department of Applied Chemistry, Faculty of Engineering, Suita, Osaka-565-0871, Japan
| | - Naoto Chatani
- Department of Applied Chemistry, Faculty of Engineering, Suita, Osaka-565-0871, Japan
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82
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Ghosh P, Samanta S, Hajra A. Rhodium(iii)-catalyzed ortho-C-H amidation of 2-arylindazoles with a dioxazolone as an amidating reagent. Org Biomol Chem 2020; 18:1728-1732. [PMID: 32009136 DOI: 10.1039/c9ob02756d] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A simple and efficient method for the directed amidation of a wide range of 2-arylindazoles has been established for the first time through a rhodium-catalyzed C-H activation reaction with alkyl, aryl and heteroaryl dioxazolones. A series of N-(2-(2H-indazol-2-yl)phenyl)acetamide derivatives were synthesized in excellent yields. A mechanistic study was conducted to describe C-H bond cleavage which is likely to be involved in the rate determining step.
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Affiliation(s)
- Payel Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Sadhanendu Samanta
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan, 731235, West Bengal, India.
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83
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Park DD, Min KH, Kang J, Hwang HS, Soni VK, Cho CG, Cho EJ. Transforming Oxadiazolines through Nitrene Intermediates by Energy Transfer Catalysis: Access to Sulfoximines and Benzimidazoles. Org Lett 2020; 22:1130-1134. [PMID: 31985235 DOI: 10.1021/acs.orglett.9b04646] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Subtle differences in reaction conditions facilitated unprecedented photocatalytic reactions of oxadiazolines by energy transfer catalysis. A set of compounds, sulfoximines and benzimidazoles, were ingeniously prepared from oxadiazolines via nitrene intermediates by photocatalytic N-O/C-N bond cleavages. The synthesis of sulfoximines was realized through intermolecular N-S bond formation between nitrene intermediates and sulfoxides, whereas benzimidazoles were obtained via intramolecular aromatic substitution of the nitrene to the tethered aryl substituent.
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Affiliation(s)
- Do Dam Park
- Department of Chemistry , Chung-Ang University , 84 Heukseok-ro , Dongjak-gu, Seoul 06974 , Republic of Korea
| | - Kwan Hong Min
- Department of Chemistry , Chung-Ang University , 84 Heukseok-ro , Dongjak-gu, Seoul 06974 , Republic of Korea
| | - Jihee Kang
- Department of Chemistry , Chung-Ang University , 84 Heukseok-ro , Dongjak-gu, Seoul 06974 , Republic of Korea
| | - Ho Seong Hwang
- Department of Chemistry , Chung-Ang University , 84 Heukseok-ro , Dongjak-gu, Seoul 06974 , Republic of Korea
| | - Vineet Kumar Soni
- Department of Chemistry , Chung-Ang University , 84 Heukseok-ro , Dongjak-gu, Seoul 06974 , Republic of Korea
| | - Cheon-Gyu Cho
- Department of Chemistry , Hanyang University , Seoul 04763 , Republic of Korea
| | - Eun Jin Cho
- Department of Chemistry , Chung-Ang University , 84 Heukseok-ro , Dongjak-gu, Seoul 06974 , Republic of Korea
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84
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Sun K, Li Y, Feng R, Mu S, Wang X, Zhang B. C-H Imidation and Dual C-H Bond Aminobromination of Five-Membered Heterocycles. J Org Chem 2020; 85:1001-1008. [PMID: 31872767 DOI: 10.1021/acs.joc.9b02941] [Citation(s) in RCA: 23] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Abstract
Here, we report a practical C-H imidation of five-membered heterocycles under metal-free conditions. We also report the first dual C-H bond aminobromination of thiophenes, with benzotriazole, saccharin, 1,2,4-triazole, benzimidazole, pyrazole, 4-bromopyrazole, 5-methyltetrazole, and dibenzenesulfonimides as effective amine sources. Mechanistic studies support the radical pathway of the imidation and aminobromination reactions.
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Affiliation(s)
- Kai Sun
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China
| | - Yali Li
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China
| | - Ranran Feng
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China
| | - Shiqiang Mu
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China
| | - Xin Wang
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China.,College of Chemistry and Energy , Zhengzhou University , Zhengzhou 450001 , P. R. China
| | - Bing Zhang
- College of Chemistry and Chemical Engineering , Anyang Normal University , Anyang 455000 , P. R. China.,College of Chemistry and Energy , Zhengzhou University , Zhengzhou 450001 , P. R. China
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85
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Mathur P, Misra S. Metal-carbonyl promoted multicomponent coupling of alkynes for the synthesis of heterocyclic compounds. ADVANCES IN ORGANOMETALLIC CHEMISTRY 2020. [DOI: 10.1016/bs.adomc.2019.09.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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86
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Ou Y, Huang Y, He Z, Yu G, Huo Y, Li X, Gao Y, Chen Q. A phosphoryl radical-initiated Atherton–Todd-type reaction under open air. Chem Commun (Camb) 2020; 56:1357-1360. [DOI: 10.1039/c9cc09407e] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A phosphoryl radical-initiated Atherton–Todd-type reaction enables the phosphorylation of alcohols, phenols, and amines under mild reaction conditions.
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Affiliation(s)
- Yingcong Ou
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Yuanting Huang
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Zhenlin He
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Guodian Yu
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Yanping Huo
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Xianwei Li
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Yang Gao
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
| | - Qian Chen
- School of Chemical Engineering and Light Industry
- Guangdong University of Technology
- Guangzhou 510006
- China
- Key Laboratory of Functional Molecular Engineering of Guangdong Province
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87
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Mahata A, Bhaumick P, Panday AK, Yadav R, Parvin T, Choudhury LH. Multicomponent synthesis of diphenyl-1,3-thiazole-barbituric acid hybrids and their fluorescence property studies. NEW J CHEM 2020. [DOI: 10.1039/d0nj00406e] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A series of novel diphenyl-1,3-thiazole linked barbituric acid hybrids (4) were prepared by two catalyst-free methods from readily available starting materials.
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Affiliation(s)
- Alok Mahata
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-801106
- India
| | - Prabhas Bhaumick
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-801106
- India
| | - Anoop Kumar Panday
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-801106
- India
| | - Rahul Yadav
- Department of Chemistry
- National Institute of Technology Patna
- Patna-800 005
- India
| | - Tasneem Parvin
- Department of Chemistry
- National Institute of Technology Patna
- Patna-800 005
- India
| | - Lokman H. Choudhury
- Department of Chemistry
- Indian Institute of Technology Patna
- Patna-801106
- India
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88
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Zuo M, Guo W, Pang Y, Guo R, Hou C, Sun S, Wu H, Sun Z, Chu W. Direct synthesis of 2-substituted benzimidazoles via dehydrogenative coupling of aromatic-diamine and primary alcohol catalyzed by a Co complex. NEW J CHEM 2020. [DOI: 10.1039/d0nj03619f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A Co(ii) complex was synthesized and used as catalyst to synthesize a series of 2-substituted benzimidazoles with o-phenylenediamines and primary alcohol as the substrates under mild reaction conditions.
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Affiliation(s)
- Minghui Zuo
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion
| | - Weihao Guo
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion
| | - Yucheng Pang
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion
| | - Rui Guo
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion
| | - Chuanfu Hou
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion
| | - Shouneng Sun
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion
| | - Hongfeng Wu
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion
| | - Zhizhong Sun
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion
| | - Wenyi Chu
- School of Chemistry and Materials Science
- Heilongjiang University
- Harbin 150080
- P. R. China
- Key Laboratory of Chemical Engineering Process and Technology for High-efficiency Conversion
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89
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Mukherjee A, Ghosal NC, Zyryanov GV, Majee A, Santra S. An Updated Library on the Synthesis of Aziridines. CURRENT GREEN CHEMISTRY 2019. [DOI: 10.2174/2213346106666191024123452] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
Aziridines are highly versatile intermediates in organic synthesis due to their easy access
and their susceptibility to ring-opening by facile C-N bond cleavage. They are synthetically very important
as they are valuable precursors of amino sugars, β-lactam antibiotics and alkaloids or present
in various natural products that exhibit potent biological activities. The synthesis of this moiety from
the easily available chemicals is desirable due to its tremendous use in the various branches of chemistry.
Here, a short review has been reported on the synthesis of this scaffold employing different strategies
under different greener conditions. Various methods have been developed in the presence of
green catalysts and solvents.
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Affiliation(s)
- Anindita Mukherjee
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute, Ural Federal University, 19 Mira Str., K-2, Yekaterinburg, 620002, Russian Federation
| | - Nirnita C. Ghosal
- Department of Chemistry, University of Calcutta, Sir Rashbehari Shiksha Prangan, 92, A.P.C. Road, Kolkata-700 009, India
| | - Grigory V. Zyryanov
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute, Ural Federal University, 19 Mira Str., K-2, Yekaterinburg, 620002, Russian Federation
| | - Adinath Majee
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan-731235, India
| | - Sougata Santra
- Department of Organic and Biomolecular Chemistry, Chemical Engineering Institute, Ural Federal University, 19 Mira Str., K-2, Yekaterinburg, 620002, Russian Federation
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90
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Satyam K, Murugesh V, Suresh S. The base-free van Leusen reaction of cyclic imines on water: synthesis of N-fused imidazo 6,11-dihydro β-carboline derivatives. Org Biomol Chem 2019; 17:5234-5238. [PMID: 31074750 DOI: 10.1039/c9ob00660e] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Construction of imidazoles has been demonstrated on water under base-free conditions. The reaction of dihydro β-carboline imines and p-toluenesulfonylmethyl isocyanides furnished the corresponding substituted N-fused imidazo 6,11-dihydro β-carboline derivatives in very good yields under ambient conditions. The use of deuterium oxide (D2O) as a solvent enabled the incorporation of deuterium isotopes in the imidazole ring.
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Affiliation(s)
- Killari Satyam
- Organic Synthesis and Process Chemistry, CSIR-Indian Institute of Chemical Technology (CSIR-IICT), Hyderabad 500 007, India.
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91
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Kaabel S, Friščić T, Auclair K. Mechanoenzymatic Transformations in the Absence of Bulk Water: A More Natural Way of Using Enzymes. Chembiochem 2019; 21:742-758. [PMID: 31651073 DOI: 10.1002/cbic.201900567] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2019] [Indexed: 12/21/2022]
Affiliation(s)
- Sandra Kaabel
- Department of ChemistryMcGill University 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| | - Tomislav Friščić
- Department of ChemistryMcGill University 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
| | - Karine Auclair
- Department of ChemistryMcGill University 801 Sherbrooke Street West Montreal QC H3A 0B8 Canada
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92
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Sun K, Luan B, Liu Z, Zhu J, Du J, Bai E, Fang Y, Zhang B. Mild and regioselective azol-halogenation of alkenes. Org Biomol Chem 2019; 17:4208-4211. [PMID: 30941381 DOI: 10.1039/c9ob00317g] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
An economical and practical azol-halogenation protocol of alkenes, which provides a general approach to construct a series of structurally diverse β-halogenated amine derivatives, is reported. The wide substrate scope, good functional group tolerance, ease of large-scale preparation and potential for product derivatization make this reaction attractive. Mechanistic studies suggest that the azol-halogenation process might involve a radical halogenation followed by nucleophilic azolyation.
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Affiliation(s)
- Kai Sun
- College of Chemistry and Chemical Engineering, Anyang Normal University, Anyang 455000, P. R. China.
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93
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94
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Huang J, Ding J, Ding TM, Zhang S, Wang Y, Sha F, Zhang SY, Wu XY, Li Q. Cobalt-Catalyzed Ortho-C(sp 2)-H Amidation of Benzaldehydes with Dioxazolones Using Transient Directing Groups. Org Lett 2019; 21:7342-7345. [PMID: 31478381 DOI: 10.1021/acs.orglett.9b02632] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
An efficient and convenient cobalt-catalyzed ortho-C(sp2)-H amidation of benzaldehydes employing dioxazolones as the aminating reagent has been developed. The key feature of this protocol is the use of green and economic earth-abundant metals cobalt as the catalyst with the p-chloroaniline as the transient directing group. Further application of our approach was demonstrated by the synthesis of C1r serine protease inhibitor 45 and elastase inhibitor 49.
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Affiliation(s)
- Jie Huang
- School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Jun Ding
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs and School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Tong-Mei Ding
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs and School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Shuiyi Zhang
- School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Yaqiu Wang
- School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Feng Sha
- School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Shu-Yu Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs and School of Chemistry and Chemical Engineering , Shanghai Jiao Tong University , Shanghai 200240 , China
| | - Xin-Yan Wu
- School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
| | - Qiong Li
- School of Chemistry and Molecular Engineering , East China University of Science and Technology , Shanghai 200237 , China
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95
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Noroozi Pesyan N, Rezanejade Bardajee G, Kashani E, Mohammadi M, Batmani H. Ni(II)-Schiff base/SBA-15: a nanostructure and reusable catalyst for one-pot three-component green synthesis of 3,4-dihydropyrano[3,2-c]chromene derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2019. [DOI: 10.1007/s11164-019-03954-6] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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96
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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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97
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Ferlin F, Yetra SR, Warratz S, Vaccaro L, Ackermann L. Reusable Pd@PEG Catalyst for Aerobic Dehydrogenative C-H/C-H Arylations of 1,2,3-Triazoles. Chemistry 2019; 25:11427-11431. [PMID: 31306515 DOI: 10.1002/chem.201902901] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2019] [Revised: 07/11/2019] [Indexed: 01/22/2023]
Abstract
Dehydrogenative C-H arylations of 1,2,3-triazoles were accomplished with the aid of a reusable palladium catalyst in PEG. The widely applicable oxidative palladium catalysis enabled the synthesis of fully decorated 1,2,3-triazoles with a broad functional-group tolerance and ample substrate scope. The sustainability of the aerobic C-H arylation was reflected by the use of PEG as green reaction medium and demonstrated by recycling studies of the catalyst and the reaction medium.
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Affiliation(s)
- Francesco Ferlin
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany.,Laboratory of Green S.O.C., Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Santhivardhana Reddy Yetra
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Svenja Warratz
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
| | - Luigi Vaccaro
- Laboratory of Green S.O.C., Dipartimento di Chimica, Biologia e Biotecnologie, Università degli Studi di Perugia, Via Elce di Sotto 8, 06123, Perugia, Italy
| | - Lutz Ackermann
- Institut für Organische und Biomolekulare Chemie, Georg-August-Universität Göttingen, Tammannstrasse 2, 37077, Göttingen, Germany
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98
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99
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Reen GK, Kumar A, Sharma P. Recent advances on the transition-metal-catalyzed synthesis of imidazopyridines: an updated coverage. Beilstein J Org Chem 2019; 15:1612-1704. [PMID: 31435443 PMCID: PMC6664406 DOI: 10.3762/bjoc.15.165] [Citation(s) in RCA: 42] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2019] [Accepted: 06/28/2019] [Indexed: 12/21/2022] Open
Abstract
A comprehensive account of recent advances in the synthesis of imidazopyridines, assisted through transition-metal-catalyzed multicomponent reactions, C-H activation/functionalization and coupling reactions are highlighted in this review article. The basic illustration of this review comprises of schemes with concise account of explanatory text. The schemes depict the reaction conditions along with a quick look into the mechanism involved to render a deep understanding of the catalytic role. At some instances optimizations of certain features have been illustrated through tables, i.e., selectivity of catalyst, loading of the catalyst and percentage yield with different substrates. Each of the reported examples has been rigorously analyzed for reacting substrates, reaction conditions and transition metals used as the catalyst. This review will be helpful to the chemists in understanding the challenges associated with the reported methods as well as the future possibilities, both in the choice of substrates and catalysts. This review would be quite appealing to a wider range of organic chemists in academia and industrial R&D sectors working in the field of heterocyclic syntheses. In a nutshell, this review will be a guiding torch to envisage: (i) the role of various transition metals in the domain dedicated towards method development and (ii) for the modifications needed thereof in the R&D sector.
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Affiliation(s)
| | - Ashok Kumar
- School of Chemical Sciences, Devi Ahilya University, Indore, (M. P.), India
| | - Pratibha Sharma
- School of Chemical Sciences, Devi Ahilya University, Indore, (M. P.), India
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100
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Samanta S, Mondal S, Ghosh D, Hajra A. Rhodium-Catalyzed Directed C–H Amidation of Imidazoheterocycles with Dioxazolones. Org Lett 2019; 21:4905-4909. [DOI: 10.1021/acs.orglett.9b01832] [Citation(s) in RCA: 50] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
Affiliation(s)
- Sadhanendu Samanta
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Susmita Mondal
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Debashis Ghosh
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
| | - Alakananda Hajra
- Department of Chemistry, Visva-Bharati (A Central University), Santiniketan 731235, India
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