1
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Sharma J, Champagne PA. Mechanisms of the Gewald Synthesis of 2-Aminothiophenes from Elemental Sulfur. J Org Chem 2024; 89:9609-9619. [PMID: 38913830 DOI: 10.1021/acs.joc.4c01189] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/26/2024]
Abstract
The Gewald reaction is a well-established one-pot method to access 2-aminothiophenes from carbonyl compounds, activated acetonitriles, and elemental sulfur. To elucidate the reaction's poorly understood mechanism, with regard to the decomposition of sulfur and polysulfide intermediates, we have performed a comprehensive computational study using density functional theory (DFT) calculations at the M06-2X (or ωB97X-D)/aug-cc-pV(T + d)Z/SMD(C2H5OH) level of theory. The results show that the reaction is initiated by a Knoevenagel-Cope condensation, followed by opening of the elemental sulfur, leading to polysulfide formation. The polysulfide intermediates can interconvert and decompose using various mechanisms including unimolecular cyclization, nucleophilic degradation, and scrambling. Protonation of the polysulfides changes their electrophilic behavior and provides a kinetically favorable pathway for their decomposition. This protonation-induced intermolecular degradation is feasible for polysulfides of all lengths, but unimolecular decomposition is kinetically favored for long polysulfides (≥6 sulfur atoms). None of the pathways provide any thermodynamic benefit due to the lack of resonance-stabilized leaving group, and a complex equilibrium of polysulfides of all lengths is expected in solution. Cyclization of the monosulfide with aromatization to the thiophene product is the only driving force behind the reaction, funneling all of the various intermediates into the observed product in a thermodynamically controlled process.
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Affiliation(s)
- Jyoti Sharma
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
| | - Pier Alexandre Champagne
- Department of Chemistry and Environmental Science, New Jersey Institute of Technology, Newark, New Jersey 07102, United States
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2
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Huang H, Lv W, Huang J, Yang T, Wang L, Feng G. Unveiling the Noncovalent Interactions between Formamide and Heteroaromatics: Microwave Spectroscopy of the Formamide Complexes with Furan and Thiophene. J Phys Chem A 2024; 128:4705-4713. [PMID: 38829770 DOI: 10.1021/acs.jpca.4c02643] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/05/2024]
Abstract
The noncovalent interactions between formamide (FM) and the heteroaromatic compounds (furan and thiophene) were investigated through microwave spectroscopy and theoretical calculations. Each of the investigated complexes exhibits a single rotational spectrum corresponding to the lowest energy structure predicted theoretically. In the detected structures, N-H···O and C-H···O hydrogen bonds dominate the complexation between FM and furan, resulting in a planar configuration. Conversely, a superposed configuration linked by a N-H···π hydrogen bond and C═O···π contact is observed for the FM-thiophene complex. In both cases, hydrogen bonding interactions with N-H as proton donor rank as the dominant forces, and the interaction energy of N-H···O is larger than that of N-H···π. It was found that the electrostatic component is the largest contributor to the attraction between FM and furan, while the dispersion component is the most significant attractive factor in the FM-thiophene complex. These findings highlight the distinct features of hydrogen bonding interactions of amides with heteroaromatics in the studied complexes.
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Affiliation(s)
- Haiying Huang
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Wenqi Lv
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Jinxi Huang
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Tingting Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Liuting Wang
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
| | - Gang Feng
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Rd. 55, 401331 Chongqing, China
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3
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Liang YH, Shu P, Li YL, Li M, Ye ZH, Chu S, Du ZY, Dong CZ, Meunier B, Chen HX. GDU-952, a novel AhR agonist ameliorates skin barrier abnormalities and immune dysfunction in DNFB-induced atopic dermatitis in mice. Biochem Pharmacol 2023; 217:115835. [PMID: 37778446 DOI: 10.1016/j.bcp.2023.115835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/20/2023] [Revised: 09/23/2023] [Accepted: 09/26/2023] [Indexed: 10/03/2023]
Abstract
The aryl hydrocarbon receptor (AhR) is widely expressed in the skin. It controls immune-mediated skin responses to various external environmental signals, promote terminal differentiation of epidermal keratinocytes and participates the maintenance of the skin barrier function. As a therapeutic target, AhR activation modulates many diseases progression driven by immune/inflammatory processes such as atopic dermatitis (AD) and psoriasis. In this study, we revealed that GDU-952 is a novel AhR agonist, which is able to decreases IgE serum levels, to inhibit pro-inflammatory cytokines such as IL-6 and TNF-α and to induce immunoregulatory effects through restoring Th1/Th2 immune balance and promoting CD4+FOXP3+regulatory T (Treg) populations in AD skin lesions. Furthermore, GDU-952 can strengthen the skin barrier function through upregulating epidermal differentiation-related and tight junction proteins. This may alleviate AD symptoms, such as dermatitis scores, epidermal hyperplasia and mast cell infiltration. These results offer a rationale for further preclinical/clinical studies to evaluate the possible use of GDU-952 in the management of AD.
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Affiliation(s)
- Ye-Hao Liang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, PR China
| | - Peng Shu
- HBN Research Institute and Biological Laboratory, Shenzhen Hujia Technology Co., Ltd., Shenzhen, PR China
| | - Yong-Liang Li
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, PR China
| | - Menggeng Li
- HBN Research Institute and Biological Laboratory, Shenzhen Hujia Technology Co., Ltd., Shenzhen, PR China
| | - Zi-Heng Ye
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, PR China
| | - Shanpeng Chu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, PR China
| | - Zhi-Yun Du
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, PR China
| | - Chang-Zhi Dong
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, PR China; Université Paris Cité, ITODYS, UMR 7086 CNRS, 75013 Paris, France
| | - Bernard Meunier
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, PR China; Laboratoire de Chimie de Coordination du CNRS, 205 Route de Narbonne, 31077 Toulouse Cedex, France
| | - Hui-Xiong Chen
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou, PR China; Chemistry of RNA, Nucleosides, Peptides and Heterocycles, CNRS UMR8601, Université Paris Cité, UFR Biomédicale, 45 rue des Saints-Pères, 75270 Paris Cedex 06, France.
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4
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Yang T, Wang L, Wang Z, Xu Y, Feng G. Noncovalent Interactions between Aromatic Heterocycles and Carboxylic Acids: Rotational Spectroscopy of the Furan-Formic Acid and Thiophene-Formic Acid Complexes. J Phys Chem A 2022; 126:4608-4616. [PMID: 35796534 DOI: 10.1021/acs.jpca.2c03770] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The binary molecular complexes formed between the aromatic heterocycles furan and thiophene with formic acid were investigated using pulsed-jet Fourier transform microwave spectroscopy and quantum chemical computations. For both of the complexes, rotational spectra of the lowest energy isomer were detected and assigned. Rotational spectroscopic results and density functional theory calculations support that the preferred conformation of the furan-formic acid complex is characterized by a relatively strong O-H···O and a weak C-H···O hydrogen bonds while the O-H···π and C-H···O hydrogen bonds stabilize the thiophene-formic acid complex. Natural bond orbital analysis further proves the experimental observation, suggesting that the strength of the O-H···O(furan) interaction is about two times stronger than that of O-H···π(thiophene). The symmetry adapted perturbation theory analysis reveals that electrostatic interaction is dominant in stabilizing the two complexes and that dispersion becomes significant in the thiophene-formic acid complex compared to furan-formic acid.
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Affiliation(s)
- Tingting Yang
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Road 55, 401331 Chongqing, China
| | - Liuting Wang
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Road 55, 401331 Chongqing, China
| | - Zhen Wang
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Road 55, 401331 Chongqing, China
| | - Yugao Xu
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Road 55, 401331 Chongqing, China
| | - Gang Feng
- School of Chemistry and Chemical Engineering, Chongqing University, Daxuecheng South Road 55, 401331 Chongqing, China
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5
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Duvauchelle V, Meffre P, Benfodda Z. Recent contribution of medicinally active 2-aminothiophenes: A privileged scaffold for drug discovery. Eur J Med Chem 2022; 238:114502. [DOI: 10.1016/j.ejmech.2022.114502] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/05/2022] [Revised: 05/23/2022] [Accepted: 05/26/2022] [Indexed: 02/01/2023]
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6
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Ibrahim SRM, Omar AM, Bagalagel AA, Diri RM, Noor AO, Almasri DM, Mohamed SGA, Mohamed GA. Thiophenes-Naturally Occurring Plant Metabolites: Biological Activities and In Silico Evaluation of Their Potential as Cathepsin D Inhibitors. PLANTS (BASEL, SWITZERLAND) 2022; 11:539. [PMID: 35214871 PMCID: PMC8877444 DOI: 10.3390/plants11040539] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/14/2022] [Revised: 02/03/2022] [Accepted: 02/12/2022] [Indexed: 05/03/2023]
Abstract
Naturally, thiophenes represent a small family of natural metabolites featured by one to five thiophene rings. Numerous plant species belonging to the family Asteraceae commonly produce thiophenes. These metabolites possessed remarkable bioactivities, including antimicrobial, antiviral, anti-inflammatory, larvicidal, antioxidant, insecticidal, cytotoxic, and nematicidal properties. The current review provides an update over the past seven years for the reported natural thiophene derivatives, including their sources, biosynthesis, spectral data, and bioactivities since the last review published in 2015. Additionally, with the help of the SuperPred webserver, an AI (artificial intelligence) tool, the potential drug target for the compounds was predicted. In silico studies were conducted for Cathepsin D with thiophene derivatives, including ADMET (drug absorption/distribution/metabolism/excretion/and toxicity) properties prediction, molecular docking for the binding interaction, and molecular dynamics to evaluate the ligand-target interaction stability under simulated physiological conditions.
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Affiliation(s)
- Sabrin R. M. Ibrahim
- Department of Chemistry, Preparatory Year Program, Batterjee Medical College, Jeddah 21442, Saudi Arabia
- Department of Pharmacognosy, Faculty of Pharmacy, Assiut University, Assiut 71526, Egypt
| | - Abdelsattar M. Omar
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Center for Artificial Intelligence in Precision Medicines, King Abdulaziz University, Jeddah 21589, Saudi Arabia
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Al-Azhar University, Cairo 11884, Egypt
| | - Alaa A. Bagalagel
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.A.B.); (R.M.D.); (A.O.N.); (D.M.A.)
| | - Reem M. Diri
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.A.B.); (R.M.D.); (A.O.N.); (D.M.A.)
| | - Ahmad O. Noor
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.A.B.); (R.M.D.); (A.O.N.); (D.M.A.)
| | - Diena M. Almasri
- Department of Pharmacy Practice, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia; (A.A.B.); (R.M.D.); (A.O.N.); (D.M.A.)
| | | | - Gamal A. Mohamed
- Department of Natural Products and Alternative Medicine, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
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7
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Pyrolytic Synthesis of Metal Sulphide Quantum Dots from 1-((Thiophen-2-yl)methylene)thiosemicarbazide Complexes and Their Application in Catalysis. Top Catal 2022. [DOI: 10.1007/s11244-022-01573-x] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/25/2022]
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8
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Tan SL, Cardoso LNF, de Souza MVN, Wardell SMSV, Wardell JL, Tiekink ERT. Experimental and computational evidence for stabilising parallel, offset π[C(O)N(H)NC]⋯π(phenyl) interactions in acetohydrazide derivatives. CrystEngComm 2022. [DOI: 10.1039/d1ce01492g] [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
Stabilising π[C(O)N(H)NC]⋯π(phenyl) interactions are described.
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Affiliation(s)
- Sang Loon Tan
- Research Centre for Crystalline Materials, School of Medical and Life Sciences, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
| | - Laura N. F. Cardoso
- Instituto de Tecnologia em Fármacos Farmanguinhos, FIOCRUZ Fundação Oswaldo Cruz, Rio de Janeiro 21041-250, Brazil
| | - Marcus V. N. de Souza
- Instituto de Tecnologia em Fármacos Farmanguinhos, FIOCRUZ Fundação Oswaldo Cruz, Rio de Janeiro 21041-250, Brazil
| | | | - James L. Wardell
- Department of Chemistry, University of Aberdeen, Meston Walk, Old Aberdeen, AB24 3UE, Scotland, UK
| | - Edward R. T. Tiekink
- Research Centre for Crystalline Materials, School of Medical and Life Sciences, Sunway University, 47500 Bandar Sunway, Selangor Darul Ehsan, Malaysia
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9
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Bhilare NV, Marulkar VS, Shirote PJ, Dombe SA, Pise VJ, Salve PL, Biradar SM, Yadav VD, Jadhav PD, Bodhe AA, Borkar SP, Ghadge PM, Shelar PA, Jadhav AV, Godse KC. Mannich Bases: Centrality in Cytotoxic Drug Design. Med Chem 2021; 18:735-756. [PMID: 34931967 DOI: 10.2174/1573406418666211220124119] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 10/04/2021] [Accepted: 10/18/2021] [Indexed: 11/22/2022]
Abstract
Mannich bases identified by Professor Carl Mannich have been the most extensively explored scaffolds for more than 100 years now. The versatile biological roles that they play have promoted their applications in many clinical conditions. The present review highlights the application of Mannich bases as cytotoxic agents, categorizing them into synthetic, semisynthetic and prodrugs classes and gives an exhaustive account of the work reported in the last two decades. The methods of synthesis of these cytotoxic agents, their anti-cancer potential in various cell lines and promising leads for future drug development have also been discussed. Structure-activity relationships along with the targets on which these cytotoxic Mannich bases act have been included as well.
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Affiliation(s)
- Neha V Bhilare
- Department of Pharmaceutical Chemistry, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Vinayak S Marulkar
- Department of Pharmaceutical Chemistry, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Pramodkumar J Shirote
- Department of Pharmaceutical Chemistry, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Shailaja A Dombe
- Department of Pharmaceutics, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Vilas J Pise
- Department of Pharmaceutical Chemistry, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Pallavi L Salve
- Department of Pharmaceutical Chemistry, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Shantakumar M Biradar
- Department of Pharmaceutical Chemistry, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Vishal D Yadav
- Department of Pharmaceutics, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Prakash D Jadhav
- Department of Pharmaceutics, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Anjali A Bodhe
- Department of Pharmaceutics, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Smita P Borkar
- Department of Pharmaceutics, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Prachi M Ghadge
- Department of Pharmacology, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Pournima A Shelar
- Department of Pharmaceutics, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Apurva V Jadhav
- Department of Pharmaceutics, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
| | - Kirti C Godse
- Department of Pharmacology, Arvind Gavali College of Pharmacy, Satara-415004, Maharashtra, India
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10
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Yang B, Zhou J, Wang F, Hu XW, Shi Y. Pyrazoline derivatives as tubulin polymerization inhibitors with one hit for Vascular Endothelial Growth Factor Receptor 2 inhibition. Bioorg Chem 2021; 114:105134. [PMID: 34246970 DOI: 10.1016/j.bioorg.2021.105134] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2021] [Revised: 06/06/2021] [Accepted: 06/26/2021] [Indexed: 02/07/2023]
Abstract
In this work, to check the effect of the transposition of the rings in typical patterns, a series of pyrazoline derivatives 3a-3t bearing the characteristic 3,4,5-trimethoxy phenyl and thiophene moieties were synthesized and evaluated as tubulin polymerization inhibitors. Basically, as the concise output of our design, a majority of the synthesized compounds showed potency in inhibiting the tubulin polymerization. The top hit, 3q, exhibited potent anti-proliferation activity on cancer cell lines. It was comparable on tubulin-polymerization inhibition with the positive control Colchicine but lower toxic. The VEGFR2 inhibitory potency was introduced occasionally. The flow cytometry assay confirmed the apoptotic procedure and the confocal imaging revealed the tubulin-microtubule dynamics pattern. The anti-cancer mechanism of 3q was similar to Colchicine but not exactly the same on forming multi-polar spindles. The docking simulation visualized the possible binding patterns of 3q into tubulin and VEGFR2, respectively. The results inferred that further investigations on the transposition of the rings might lead to the improvement of tubulin polymerization inhibitory activity and the steadily introduction of the VEGFR2 inhibition.
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Affiliation(s)
- Bing Yang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China.
| | - Jiahua Zhou
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Fa Wang
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China
| | - Xiao-Wei Hu
- School of Chemistry and Chemical Engineering, Linyi University, Linyi, Shandong 276005, China
| | - Yujun Shi
- School of Chemistry and Chemical Engineering, Nantong University, Nantong, Jiangsu 226019, China.
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11
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Dong M, Jia Y, Zhou W, Gao J, Lv X, Luo F, Zhang Y, Liu S. A photoredox/nickel dual-catalytic strategy for benzylic C–H alkoxylation. Org Chem Front 2021. [DOI: 10.1039/d1qo01421h] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
Reported herein is a photoredox/nickel dual-catalyzed benzylic C–H alkoxylation and the protocol features broad substrate scope and excellent functional group compatibility.
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Affiliation(s)
- Min Dong
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Yuqi Jia
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Wei Zhou
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Jinlai Gao
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Xiaoqing Lv
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
| | - Fan Luo
- School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Yongqiang Zhang
- School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Shihui Liu
- College of Medicine, Jiaxing University, 118 Jiahang Road, Jiaxing 314001, P. R. China
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