1
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An Z, Miao M, Sun F, Lan XB, Yu JQ, Guo X, Zhang J. Copper-catalyzed oxidative cyclization of 2-(1 H-pyrrol-1-yl)aniline and alkylsilyl peroxides: a route to pyrrolo[1,2- a]quinoxalines. Org Biomol Chem 2024; 22:2370-2374. [PMID: 38416487 DOI: 10.1039/d3ob01934a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/29/2024]
Abstract
An efficient method was developed for the one-pot construction of pyrrolo[1,2-a]quinoxalines via a Cu(II)-catalyzed domino reaction between 2-(1H-pyrrol-1-yl)anilines and alkylsilyl peroxides. This reaction proceeds through C-C bond cleavage and new C-C and C-N bond formation. A mechanistic study suggests that alkyl radical species participate in the cascade reaction.
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Affiliation(s)
- Zhenyu An
- College of Pharmacy, Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ministry of Education, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Man Miao
- College of Pharmacy, Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ministry of Education, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Fengkai Sun
- College of Pharmacy, Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ministry of Education, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Xiao-Bing Lan
- College of Pharmacy, Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ministry of Education, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Jian-Qiang Yu
- College of Pharmacy, Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ministry of Education, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Xiaoli Guo
- College of Pharmacy, Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ministry of Education, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Jian Zhang
- College of Pharmacy, Key Laboratory of Protection, Development and Utilization of Medicinal Resources in Liupanshan Area, Ministry of Education, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
- Medicinal Chemistry and Bioinformatics Center, Shanghai Jiao Tong University School of Medicine, Shanghai, China
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2
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Lee K, Kim YA, Jung C, Sim J, Rajasekar S, Kwak JH, Viji M, Jung JK. Microwave-Mediated, Catalyst-Free Synthesis of 1,2,4-Triazolo[1,5- a]pyridines from Enaminonitriles. Molecules 2024; 29:894. [PMID: 38398645 PMCID: PMC10892893 DOI: 10.3390/molecules29040894] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2024] [Revised: 02/02/2024] [Accepted: 02/13/2024] [Indexed: 02/25/2024] Open
Abstract
A catalyst-free, additive-free, and eco-friendly method for synthesizing 1,2,4-triazolo[1,5-a]pyridines under microwave conditions has been established. This tandem reaction involves the use of enaminonitriles and benzohydrazides, a transamidation mechanism followed by nucleophilic addition with nitrile, and subsequent condensation to yield the target compound in a short reaction time. The methodology demonstrates a broad substrate scope and good functional group tolerance, resulting in the formation of products in good-to-excellent yields. Furthermore, the scale-up reaction and late-stage functionalization of triazolo pyridine further demonstrate its synthetic utility. A plausible reaction pathway, based on our findings, has been proposed.
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Affiliation(s)
| | | | | | | | | | | | - Mayavan Viji
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Republic of Korea; (K.L.); (Y.-A.K.); (C.J.); (J.S.); (S.R.); (J.-H.K.)
| | - Jae-Kyung Jung
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Republic of Korea; (K.L.); (Y.-A.K.); (C.J.); (J.S.); (S.R.); (J.-H.K.)
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3
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Sun F, Miao M, Li W, Lan XB, Yu JQ, Zhang J, An Z. Electrochemical oxidative dehydrogenative annulation of 1-(2-aminophenyl)pyrroles with cleavage of ethers to synthesize pyrrolo[1,2- a]quinoxaline derivatives. Org Biomol Chem 2024; 22:472-476. [PMID: 38099809 DOI: 10.1039/d3ob01867a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2024]
Abstract
An array of pyrrolo[1,2-a]quinoxaline derivatives were achieved with moderate to good yields via the electrochemical redox reaction, which includes the functionalization of C(sp3)-H bonds and the construction of C-C and C-N bonds. In this atom economic reaction, THF was used as both a reactant and a solvent, and H2 was the sole by-product.
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Affiliation(s)
- Fengkai Sun
- College of Pharmacy, Ningxia Characteristic Traditional Chinese Medicine Modern Engineering Research Center, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Man Miao
- College of Pharmacy, Ningxia Characteristic Traditional Chinese Medicine Modern Engineering Research Center, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Wenxue Li
- College of Pharmacy, Ningxia Characteristic Traditional Chinese Medicine Modern Engineering Research Center, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Xiao-Bing Lan
- College of Pharmacy, Ningxia Characteristic Traditional Chinese Medicine Modern Engineering Research Center, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Jian-Qiang Yu
- College of Pharmacy, Ningxia Characteristic Traditional Chinese Medicine Modern Engineering Research Center, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
| | - Jian Zhang
- College of Pharmacy, Ningxia Characteristic Traditional Chinese Medicine Modern Engineering Research Center, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
- State Key Laboratory of Oncogenes and Related Genes, Key Laboratory of Cell Differentiation and Apoptosis of Chinese Ministry of Education, Shanghai Jiao Tong University School of Medicine, Shanghai, China
| | - Zhenyu An
- College of Pharmacy, Ningxia Characteristic Traditional Chinese Medicine Modern Engineering Research Center, Ningxia Medical University, Yinchuan, Ningxia Hui Autonomous Region, China.
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4
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Kumar S, Padala K, Maiti B. H 2O 2-Mediated Synthesis of a Quinazolin-4(3 H)-one Scaffold: A Sustainable Approach. ACS OMEGA 2023; 8:33058-33068. [PMID: 37720769 PMCID: PMC10500651 DOI: 10.1021/acsomega.3c05162] [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: 07/18/2023] [Accepted: 08/09/2023] [Indexed: 09/19/2023]
Abstract
A quinazolin-4(3H)-one ring system is a privileged heterocyclic moiety with distinctive biological properties. From this perspective, the development of an efficient strategy for the synthesis of quinazolin-4(3H)-one has always been in demand for the synthetic chemistry community. In this report, we envisaged an efficient protocol for the synthesis of quinazolin-4(3H)-one using substituted 2-amino benzamide with dimethyl sulfoxide (DMSO) as a carbon source and H2O2 as an effective oxidant. Mechanistically, the reaction proceeds through the radical approach with DMSO as one carbon source. To further substantiate the synthetic claim, the synthetic protocol has been extended to the synthesis of the anti-endotoxic active compound 3-(2-carboxyphenyl)-4-(3H)-quinazolinone.
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Affiliation(s)
- Sumit Kumar
- Department
of Chemistry, School of Advanced Science, Vellore Institute of Technology, Katpadi, Vellore, Tamil Nadu 632014, India
| | - Kishor Padala
- Department
of Chemistry, Central Tribal University
of Andhra Pradesh, Kondakarakam
Village, Cantonment area, Vizianagaram, Andhra Pradesh 535003, India
| | - Barnali Maiti
- Department
of Chemistry, School of Advanced Science, Vellore Institute of Technology, Katpadi, Vellore, Tamil Nadu 632014, India
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5
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Muller C, Horký F, Vayer M, Golushko A, Lebœuf D, Moran J. Synthesis of functionalised isochromans: epoxides as aldehyde surrogates in hexafluoroisopropanol. Chem Sci 2023; 14:2983-2989. [PMID: 36937595 PMCID: PMC10016621 DOI: 10.1039/d2sc06692k] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2022] [Accepted: 02/13/2023] [Indexed: 02/17/2023] Open
Abstract
The oxa-Pictet-Spengler reaction is arguably the most straightforward and modular way to construct the privileged isochroman motif, but its scope is largely limited to benzaldehyde derivatives and to electron-rich β-phenylethanols that lack substitution along the aliphatic chain. Here we describe a variant of this reaction starting from an epoxide, rather than an aldehyde, that greatly expands the scope and rate of the reaction (<1 h, 20 °C). Besides facilitating the initial Meinwald rearrangement, the use of hexafluoroisopropanol (HFIP) as a solvent expands the electrophile scope to include partners equivalent to ketones, aliphatic aldehydes, and phenylacetyl aldehydes, and the nucleophile scope to include modestly electronically deactivated and highly substituted β-phenylethanols. The products could be easily further derivatised in the same pot by subsequent ring-opening, reductions, and intra- and intermolecular Friedel-Crafts reactions, also in HFIP. Finally, owing to the high pharmacological relevance of the isochroman motif, the synthesis of drug analogues was demonstrated.
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Affiliation(s)
- Cyprien Muller
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Filip Horký
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Marie Vayer
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Andrei Golushko
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - David Lebœuf
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
| | - Joseph Moran
- Institut de Science et d'Ingénierie Supramoléculaires (ISIS), CNRS UMR 7006, Université de Strasbourg 8 allée Gaspard Monge 67000 Strasbourg France
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6
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Jayaram A, Govindan K, Kannan VR, Thavasianandam Seenivasan V, Chen NQ, Lin WY. Iodine-Promoted Oxidative Cyclization of Acylated and Alkylated Derivatives from Epoxides toward the Synthesis of Aza Heterocycles. J Org Chem 2023; 88:1749-1761. [PMID: 36649653 DOI: 10.1021/acs.joc.2c02802] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
Abstract
A new method for directly synthesizing acylated and alkylated quinazoline derivatives by the epoxide ring-opening reaction in the presence of I2/DMSO with 2-aminobenzamide is described herein. The developed mild protocol is efficient and displays a wide variety of functional group tolerance and substrate-controlled high selectivity, and the application of a continuous flow technique allows for faster reaction time and higher yields. Moreover, the robustness of the method is applicable in gram-scale synthesis.
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Affiliation(s)
- Alageswaran Jayaram
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
| | - Karthick Govindan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
| | - Vijaya Raghavan Kannan
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
| | | | - Nian-Qi Chen
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
| | - Wei-Yu Lin
- Department of Medicinal and Applied Chemistry, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC.,Department of Medical Research, Kaohsiung Medical University Hospital, Kaohsiung 80708, Taiwan, ROC.,Drug Development and Value Creation Research Centre, Kaohsiung Medical University, Kaohsiung 80708, Taiwan, ROC
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7
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Vishwanath M, Chaudhary CL, Park Y, Viji M, Jung C, Lee K, Sim J, Hong SM, Yoon DH, Lee DH, Lee JK, Lee H, Lee MK, Kim SY, Jung JK. Total Synthesis of Isohericerinol A and Its Analogues to Access Their Potential Neurotrophic Effects. J Org Chem 2022; 87:10836-10847. [PMID: 35946352 DOI: 10.1021/acs.joc.2c01096] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
The secondary metabolites from Hericium erinaceus are well-known to have neurotrophic and neuroprotective effects. Isohericerinol A (1), isolated by our colleagues from its fruiting parts has a strong ability to increase the nerve growth factor secretion in C6 glioma cells. The current work describes the total synthesis of 1 and its regioisomer 5 in a few steps. We present two different approaches to 1 and a regiodivergent approach for both 1 and 5 by utilizing easily accessible feedstocks. Interestingly, the natural product 1, regioisomer 5, and their intermediates exhibited potent neurotrophic activity in in vitro experimental systems. Thus, these synthetic strategies provide access to a systematic structure-activity relationship study of natural product 1.
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Affiliation(s)
- Manjunatha Vishwanath
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
| | - Chhabi Lal Chaudhary
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
| | - Yunjeong Park
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
| | - Mayavan Viji
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
| | - Chanhyun Jung
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
| | - Kwanghee Lee
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
| | - Jaeuk Sim
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
| | - Seong Min Hong
- Gachon Institute of Pharmaceutical Sciences, College of Pharmacy, Gachon University, Incheon 21936, Korea
| | - Da Hye Yoon
- Gachon Institute of Pharmaceutical Sciences, College of Pharmacy, Gachon University, Incheon 21936, Korea
| | | | | | - Heesoon Lee
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
| | - Mi Kyeong Lee
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
| | - Sun Yeou Kim
- Gachon Institute of Pharmaceutical Sciences, College of Pharmacy, Gachon University, Incheon 21936, Korea
| | - Jae-Kyung Jung
- College of Pharmacy and Medicinal Research Center (MRC), Chungbuk National University, Cheongju 28160, Korea
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8
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Wu J, Yu X, Zhong L, Jin K, Zhao G, Zhu J, Shi H, Wei Y. Dimethyl Sulfoxide as Methyl Source for the Synthesis of Quinazolinones under Metal‐Free Conditions. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202200278] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
| | - Xiaoxiao Yu
- Anhui Science and Technology University College of Chemistry and Materials Engineering CHINA
| | - Liangchen Zhong
- Anhui Science and Technology University College of Chemistry and Materials Engineering CHINA
| | - Kejun Jin
- Anhui Science and Technology University College of Chemistry and Materials Engineering CHINA
| | - Guoxu Zhao
- Anhui Science and Technology University College of Chemistry and Materials Engineering CHINA
| | - Jianye Zhu
- Anhui Science and Technology University College of Chemistry and Materials Engineering CHINA
| | - Haowen Shi
- Anhui Science and Technology University College of Chemistry and Materials Engineering CHINA
| | - Yuanyuan Wei
- Anhui Science and Technology University College of Chemistry and Materials Engineering CHINA
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9
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Le HX, Nguyen TT. Recent Examples in the Synthesis and Functionalization of C−H Bonds in Pyrrolo/Indolo [1,2‐
a
]Quinoxalines. ChemistrySelect 2022. [DOI: 10.1002/slct.202200166] [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)
- Huy X. Le
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
| | - Tung T. Nguyen
- Faculty of Chemical Engineering Ho Chi Minh City University of Technology (HCMUT) 268 Ly Thuong Kiet, District 10 Ho Chi Minh City Vietnam
- Vietnam National University Ho Chi Minh City Linh Trung Ward, Thu Duc District Ho Chi Minh City Vietnam
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10
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Borah B, Chowhan LR. Recent advances in the transition-metal-free synthesis of quinoxalines. RSC Adv 2021; 11:37325-37353. [PMID: 35496411 PMCID: PMC9043781 DOI: 10.1039/d1ra06942j] [Citation(s) in RCA: 14] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2021] [Accepted: 10/30/2021] [Indexed: 01/04/2023] Open
Abstract
Quinoxalines, also known as benzo[a]pyrazines, constitute an important class of nitrogen-containing heterocyclic compounds as a result of their widespread prevalence in natural products, biologically active synthetic drug candidates, and optoelectronic materials. Owing to their importance and chemists' ever-increasing imagination of new transformations of these products, tremendous efforts have been dedicated to finding more efficient approaches toward the synthesis of quinoxaline rings. The last decades have witnessed a marvellous outburst in modifying organic synthetic methods to create them sustainable for the betterment of our environment. The exploitation of transition-metal-free catalysis in organic synthesis leads to a new frontier to access biologically active heterocycles and provides an alternative method from the perspective of green and sustainable chemistry. Despite notable developments achieved in transition-metal catalyzed synthesis, the high cost involved in the preparation of the catalyst, toxicity, and difficulty in removing it from the final products constitute disadvantageous effects on the atom economy and eco-friendly nature of the transformation. In this review article, we have summarized the recent progress achieved in the synthesis of quinoxalines under transition-metal-free conditions and cover the reports from 2015 to date. This aspect is presented alongside the mechanistic rationalization and limitations of the reaction methodologies. The scopes of future developments are also highlighted.
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Affiliation(s)
- Biplob Borah
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
| | - L Raju Chowhan
- School of Applied Material Sciences, Centre for Applied Chemistry, Central University of Gujarat Gandhinagar-382030 India
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11
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Hernández‐Ruiz R, Rubio‐Presa R, Suárez‐Pantiga S, Pedrosa MR, Fernández‐Rodríguez MA, Tapia MJ, Sanz R. Mo-Catalyzed One-Pot Synthesis of N-Polyheterocycles from Nitroarenes and Glycols with Recycling of the Waste Reduction Byproduct. Substituent-Tuned Photophysical Properties. Chemistry 2021; 27:13613-13623. [PMID: 34288167 PMCID: PMC8518888 DOI: 10.1002/chem.202102000] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2021] [Indexed: 12/26/2022]
Abstract
A catalytic domino reduction-imine formation-intramolecular cyclization-oxidation for the general synthesis of a wide variety of biologically relevant N-polyheterocycles, such as quinoxaline- and quinoline-fused derivatives, and phenanthridines, is reported. A simple, easily available, and environmentally friendly dioxomolybdenum(VI) complex has proven to be a highly efficient and versatile catalyst for transforming a broad range of starting nitroarenes involving several redox processes. Not only is this a sustainable, step-economical as well as air- and moisture-tolerant method, but also it is worth highlighting that the waste byproduct generated in the first step of the sequence is recycled and incorporated in the final target molecule, improving the overall synthetic efficiency. Moreover, selected indoloquinoxalines have been photophysically characterized in cyclohexane and toluene with exceptional fluorescence quantum yields above 0.7 for the alkyl derivatives.
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Affiliation(s)
- Raquel Hernández‐Ruiz
- Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos s/n09001-BurgosSpain
| | - Rubén Rubio‐Presa
- Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos s/n09001-BurgosSpain
| | - Samuel Suárez‐Pantiga
- Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos s/n09001-BurgosSpain
| | - María R. Pedrosa
- Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos s/n09001-BurgosSpain
| | - Manuel A. Fernández‐Rodríguez
- Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos s/n09001-BurgosSpain
- Current address: Departamento de Química Orgánica y Química InorgánicaCampus Científico-TecnológicoFacultad de FarmaciaUniversidad de AlcaláAutovía A-II, Km 33.128805-Alcalá de HenaresMadridSpain
| | - M. José Tapia
- Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos s/n09001-BurgosSpain
| | - Roberto Sanz
- Departamento de QuímicaFacultad de CienciasUniversidad de BurgosPza. Misael Bañuelos s/n09001-BurgosSpain
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12
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Liu S, Zhang P, Zhang Y, Zhou X, Liang J, Nan J, Ma Y. Bifunctional acidic ionic liquid-catalyzed decarboxylative cascade synthesis of quinoxalines in water under ambient conditions. Org Chem Front 2021. [DOI: 10.1039/d1qo01068a] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
An acid-functionalized ionic liquid (IL)-catalyzed cascade decarboxylative cyclization of 2-arylanilines with α-oxocarboxylic acids was developed.
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Affiliation(s)
- Shanshan Liu
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, P. R. China
| | - Pingjun Zhang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, P. R. China
| | - Yuanyuan Zhang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, P. R. China
| | - Xianying Zhou
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, P. R. China
| | - Jiahui Liang
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, P. R. China
| | - Jiang Nan
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, P. R. China
| | - Yangmin Ma
- Shaanxi Key Laboratory of Chemical Additives for Industry, College of Chemistry and Chemical Engineering, Shaanxi University of Science and Technology, Xi'an, Shaanxi, 710021, P. R. China
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