1
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Yang DS, Chen XL, Wu CY, Zhou Y, Wang LS, Wu YD, Wu AX. Intramolecular/Intermolecular Sequential Cyclization Accompanied by Double C-F Bond Cleavage: Access to Tricyclic Fluorine-Containing Pyrano[3,2- c]chromenes. J Org Chem 2024; 89:16553-16563. [PMID: 39465977 DOI: 10.1021/acs.joc.4c01854] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/29/2024]
Abstract
Defluorinative cyclization of CF3-alkenes has emerged as a reliable strategy for crafting intricate polycyclic frameworks. In this study, a facile defluorinative bicyclization approach was developed for the construction of 4H,5H-pyrano[3,2-c]chromenes under mild conditions involving a sequence of intramolecular cyclization and intermolecular defluoroheterocyclization. A variety of polysubstituted 4H,5H-pyrano[3,2-c]chromenes featuring C2-fluorine could be synthesized in good yields with excellent tolerance toward various functional groups. Moreover, the introduction of a C-F bond provides additional possibilities for further modification of this skeleton. The product features aggregation-induced emission (AIE) characteristics after simple modification, which is promising for chemical and biomedical imaging.
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Affiliation(s)
- Dong-Sheng Yang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - Xiang-Long Chen
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - Chun-Yan Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - You Zhou
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - Li-Sheng Wang
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - Yan-Dong Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
| | - An-Xin Wu
- National Key Laboratory of Green Pesticide, International Joint Research Center for Intelligent Biosensor Technology and Health, College of Chemistry, Central China Normal University, Wuhan, Hubei 430079, China
- State Key Laboratory of Applied Organic Chemistry, Lanzhou University, Lanzhou 730000, P. R. China
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2
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Shen G, Li Z, Zhao L, Zhang Y, Zhang Y, Li Z, Huang X, Lv X. Room-Temperature Cascade Electrophilic Addition/Cyclization/Oxidation Reactions: Divergent Selective Synthesis of Brominated 2H-Chromenes, 2H-Chromen-2-ols and 2H-Chromen-2-ones. Chemistry 2024; 30:e202401011. [PMID: 38757219 DOI: 10.1002/chem.202401011] [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: 03/12/2024] [Revised: 05/14/2024] [Accepted: 05/16/2024] [Indexed: 05/18/2024]
Abstract
The room temperature metal-free cascade electrophilic addition/cyclization/oxidation reactions of (3-phenoxyprop-1-yn-1-yl)benzenes to divergently synthesize various brominated benzopyran derivatives (3-bromo-2H-chromenes, 3-bromo-2H-chromen-2-ols and 3-bromo coumarins) by tuning the amount of Br2 and H2O have been developed. The method exhibited high selectivity, mild reaction conditions, broad substrate scope, high efficiency, and the applicability for derivatization of the brominated products. The importance of the strategies provides a great advantage for selective synthesis of brominated benzopyran derivatives.
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Affiliation(s)
- Guodong Shen
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng, 252000, Shandong, P. R. China
| | - Zhanjun Li
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng, 252000, Shandong, P. R. China
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology E-208 West Campus, 2 Ling Gong Road, Dalian, 116024, P. R. China
| | - Lingyu Zhao
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng, 252000, Shandong, P. R. China
| | - Ye Zhang
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng, 252000, Shandong, P. R. China
| | - Yalin Zhang
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng, 252000, Shandong, P. R. China
| | - Zhen Li
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng, 252000, Shandong, P. R. China
| | - Xianqiang Huang
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng, 252000, Shandong, P. R. China
| | - Xin Lv
- College of Chemistry and Life Sciences, Zhejiang Normal University, 688 Yingbin Avenue, Jinhua, 321004, P. R. China
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3
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Li Z, Zhang Y, Sun M, Zhang Y, Lu Z, Deng Y, Huang X, Shen G. La(OTf) 3-Catalyzed [3+2] Cycloaddition Reactions for the Synthesis of Benzo[ d]oxazoles/Benzofurans. J Org Chem 2024; 89:3809-3820. [PMID: 38395778 DOI: 10.1021/acs.joc.3c02641] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2024]
Abstract
The La(OTf)3-catalyzed [3+2] cycloaddition reactions for the synthesis of benzo[d]oxazoles/benzofurans via quinones and 1,2-di-tert-butyl-3-(cyanimino)diaziridine (1,3-di-tert-butyl-2-cyanoguanidine)/vinyl azides have been explored. A series of 5-hydroxybenzofuran-4-carboxylic acid derivatives and 5-hydroxybenzo[d]oxazole-4-carboxylic acid derivatives were conveniently obtained with high yields and good stereoselectivities, which could be used for further transformations to valuable compounds.
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Affiliation(s)
- Zhanjun Li
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng 252000, Shandong, P. R. China
- Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, E-208 West Campus, 2 Ling Gong Road, Dalian 116024, P. R. China
| | - Yalin Zhang
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng 252000, Shandong, P. R. China
| | - Manman Sun
- Advanced Research Institute and School of Pharmaceutical Sciences, Taizhou University, Jiaojiang, Zhejiang 318000, P. R. China
| | - Ye Zhang
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng 252000, Shandong, P. R. China
| | - Zhaoxiang Lu
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng 252000, Shandong, P. R. China
| | - Yupeng Deng
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng 252000, Shandong, P. R. China
| | - Xianqiang Huang
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng 252000, Shandong, P. R. China
| | - Guodong Shen
- School of Chemistry and Chemical Engineering, Liaocheng University, 1 Hunan Avenue, Liaocheng 252000, Shandong, P. R. China
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4
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Beiranvand M, Habibi D, Khodakarami H. Novel UiO-NH 2-like Zr-Based MOF (Basu-DPU) as an Excellent Catalyst for Preparation of New 6 H-Chromeno[4,3- b]quinolin-6-ones. ACS OMEGA 2023; 8:25924-25937. [PMID: 37521649 PMCID: PMC10373189 DOI: 10.1021/acsomega.3c01793] [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: 03/16/2023] [Accepted: 06/21/2023] [Indexed: 08/01/2023]
Abstract
A new two-fold interpenetrated pillar-layered metal-organic framework (MOF) was designed and synthesized based on zirconium cations, an amine-functionalized ligand, and a linear exo-bidentate bis-pyridine ligand. The structure of the prepared framework was evaluated using various techniques, such as Fourier transform infrared (FTIR), 13C NMR, energy-dispersive X-ray (EDX), elemental mapping analysis, scanning electron microscopy (SEM), X-ray diffraction (XRD), thermogravimetric analysis/differential thermal analysis (TGA/DTA), and Brunauer-Emmett-Teller (BET). Then, catalytic application of the prepared zirconium-based MOF was successfully explored in the synthesis of novel 6H-chromeno[4,3-b]quinolin-6-ones 4(a-l) through a one-pot three-component condensation reaction of 4-hydroxycumarine, 1-naphthylamine, and aromatic aldehydes under solvent-free conditions at 110 °C. The pure products were obtained with high atom efficiency (AE) and short reaction times and characterized by FTIR, NMR, and mass spectrometry techniques.
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5
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Zhou JJ, Meng YN, Liu LG, Liu YX, Xu Z, Lu X, Zhou B, Ye LW. Copper-catalyzed enantioselective diyne cyclization via C(sp 2)-O bond cleavage. Chem Sci 2023; 14:3493-3500. [PMID: 37006699 PMCID: PMC10055982 DOI: 10.1039/d2sc06152j] [Citation(s) in RCA: 7] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/08/2022] [Accepted: 02/27/2023] [Indexed: 03/04/2023] Open
Abstract
The functionalization of etheric C-O bonds via C-O bond cleavage is an attractive strategy for the construction of C-C and C-X bonds in organic synthesis. However, these reactions mainly involve C(sp3)-O bond cleavage, and a catalyst-controlled highly enantioselective version is extremely challenging. Here, we report a copper-catalyzed asymmetric cascade cyclization via C(sp2)-O bond cleavage, allowing the divergent and atom-economic synthesis of a range of chromeno[3,4-c]pyrroles bearing a triaryl oxa-quaternary carbon stereocenter in high yields and enantioselectivities. Importantly, this protocol not only represents the first [1,2]-Stevens-type rearrangement via C(sp2)-O bond cleavage, but also constitutes the first example of [1,2]-aryl migration reactions via vinyl cations.
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Affiliation(s)
- Ji-Jia Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Ya-Nan Meng
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Li-Gao Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Yi-Xi Liu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Zhou Xu
- Jiangsu Key Laboratory of New Drug Research and Clinical Pharmacy, School of Pharmacy, Xuzhou Medical University Xuzhou 221004 China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Bo Zhou
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, College of Chemistry and Chemical Engineering, Xiamen University Xiamen 361005 China
- State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences Shanghai 200032 China
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6
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Yadav P, Bhalla A. Recent Advances in Green Synthesis of Functionalized Quinolines of Medicinal Impact (2018‐Present). ChemistrySelect 2022. [DOI: 10.1002/slct.202201721] [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)
- Pooja Yadav
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
| | - Aman Bhalla
- Department of Chemistry and Centre of Advanced Studies in Chemistry Panjab University Chandigarh 160014 India
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7
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Li Z, Zhao L, Zhang Y, Yan H, Huang X, Shen G. Cascade Nucleophilic Attack/Addition Cyclization Reactions to Synthesize Oxazolidin-2-imines via ( Z)-2-Bromo-3-phenylprop-2-en-1-ols/3-phenylprop-2-yn-1-ols and Diphenyl Carbodiimides. J Org Chem 2022; 87:12721-12732. [PMID: 36099272 DOI: 10.1021/acs.joc.2c01268] [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
Two concise strategies to synthesize oxazolidin-2-imines by cascade nucleophilic attack/addition cyclization reactions of (Z)-2-bromo-3-phenylprop-2-en-1-ols/3-phenylprop-2-yn-1-ols and diphenyl carbodiimides without a transition-metal catalyst have been developed. The reactions exhibited good substrate applicability tolerance, and a variety of substituted (Z)-4-((Z)-benzylidene)-N,3-diphenyloxazolidin-2-imines were synthesized in moderate to excellent yields with good stereoselectivity. The reports also provided a convenient strategy to synthesize 3-phenylprop-2-yn-1-ols by (Z)-2-bromo-3-phenylprop-2-en-1-ols. The economic and practical methods provide a great advantage for potential industrial synthesis of oxazolidin-2-imines.
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Affiliation(s)
- Zhanjun Li
- School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences, Liaocheng University, 1 Hunan Avenue, Liaocheng, Shandong 252000, P. R. China
| | - Lingyu Zhao
- Chemistry and Chemical Engineering, Jinan University, 106 Jiwei Road, Jinan, Shandong 250022, P. R. China
| | - Yalin Zhang
- School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences, Liaocheng University, 1 Hunan Avenue, Liaocheng, Shandong 252000, P. R. China
| | - Hui Yan
- School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences, Liaocheng University, 1 Hunan Avenue, Liaocheng, Shandong 252000, P. R. China
| | - Xianqiang Huang
- School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences, Liaocheng University, 1 Hunan Avenue, Liaocheng, Shandong 252000, P. R. China
| | - Guodong Shen
- School of Chemistry and Chemical Engineering, School of Pharmaceutical Sciences, Liaocheng University, 1 Hunan Avenue, Liaocheng, Shandong 252000, P. R. China.,Chemistry and Chemical Engineering, Jinan University, 106 Jiwei Road, Jinan, Shandong 250022, P. R. China
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8
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Hansen T, Sun X, Dalla Tiezza M, van Zeist W, van Stralen JNP, Geerke DP, Wolters LP, Poater J, Hamlin TA, Bickelhaupt FM. C-X Bond Activation by Palladium: Steric Shielding versus Steric Attraction. Chemistry 2022; 28:e202201093. [PMID: 35420229 PMCID: PMC9401605 DOI: 10.1002/chem.202201093] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2022] [Indexed: 11/07/2022]
Abstract
The C-X bond activation (X = H, C) of a series of substituted C(n°)-H and C(n°)-C(m°) bonds with C(n°) and C(m°) = H3 C- (methyl, 0°), CH3 H2 C- (primary, 1°), (CH3 )2 HC- (secondary, 2°), (CH3 )3 C- (tertiary, 3°) by palladium were investigated using relativistic dispersion-corrected density functional theory at ZORA-BLYP-D3(BJ)/TZ2P. The effect of the stepwise introduction of substituents was pinpointed at the C-X bond on the bond activation process. The C(n°)-X bonds become substantially weaker going from C(0°)-X, to C(1°)-X, to C(2°)-X, to C(3°)-X because of the increasing steric repulsion between the C(n°)- and X-group. Interestingly, this often does not lead to a lower barrier for the C(n°)-X bond activation. The C-H activation barrier, for example, decreases from C(0°)-X, to C(1°)-X, to C(2°)-X and then increases again for the very crowded C(3°)-X bond. For the more congested C-C bond, in contrast, the activation barrier always increases as the degree of substitution is increased. Our activation strain and matching energy decomposition analyses reveal that these differences in C-H and C-C bond activation can be traced back to the opposing interplay between steric repulsion across the C-X bond versus that between the catalyst and substrate.
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Affiliation(s)
- Thomas Hansen
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Leiden Institute of ChemistryLeiden UniversityEinsteinweg 552333 CCLeidenThe Netherlands
- Departament de Química Inorgànicai i Orgànica & IQTCUBUniversitat de BarcelonaMartí i Franquès 1-1108028BarcelonaSpain
| | - Xiaobo Sun
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Departament de Química Inorgànicai i Orgànica & IQTCUBUniversitat de BarcelonaMartí i Franquès 1-1108028BarcelonaSpain
| | - Marco Dalla Tiezza
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Willem‐Jan van Zeist
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Joost N. P. van Stralen
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Daan P. Geerke
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Lando P. Wolters
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - Jordi Poater
- Departament de Química Inorgànicai i Orgànica & IQTCUBUniversitat de BarcelonaMartí i Franquès 1-1108028BarcelonaSpain
- ICREAPasseig Lluís Companys 2308010BarcelonaSpain
| | - Trevor A. Hamlin
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
| | - F. Matthias Bickelhaupt
- Department of Theoretical ChemistryAmsterdam Institute of Molecular and Life Sciences (AIMMS)Amsterdam Center for Multiscale Modeling (ACMM)Vrije Universiteit AmsterdamDe Boelelaan 10831081 HVAmsterdamThe Netherlands
- Institute for Molecules and Materials (IMM)Radboud UniversityHeyendaalseweg 1356525 AJNijmegenThe Netherlands
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9
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Lu Q, Zhao L, Wu L, Wang X, Shen G, Huang X, Du M, Ma D. CuCl
2
or I
2
/DMSO Catalyzed S‐S Bond Cleaving/Cyclization Reactions to Synthesize 2‐Arylbenzothiazoles via 2,2′‐Disulfanediyldianilines and Aromatic Aldehyde. ChemistrySelect 2022. [DOI: 10.1002/slct.202104081] [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)
- Qichao Lu
- Chemistry and Chemical Engineering Liaocheng University 1 Hunan Avenue Liaocheng 252000 Shandong P. R. China
| | - Lingyu Zhao
- Chemistry and Chemical Engineering Liaocheng University 1 Hunan Avenue Liaocheng 252000 Shandong P. R. China
- Chemistry and Chemical Engineering Jinan University 106 Jiwei Road Jinan 250022 Shandong P. R. China
| | - Lingang Wu
- Chemistry and Chemical Engineering Liaocheng University 1 Hunan Avenue Liaocheng 252000 Shandong P. R. China
| | - Xiangqian Wang
- Chemistry and Chemical Engineering Liaocheng University 1 Hunan Avenue Liaocheng 252000 Shandong P. R. China
| | - Guodong Shen
- Chemistry and Chemical Engineering Liaocheng University 1 Hunan Avenue Liaocheng 252000 Shandong P. R. China
- Chemistry and Chemical Engineering Jinan University 106 Jiwei Road Jinan 250022 Shandong P. R. China
- National Rubber Additive Engineering Technology Center 399 Qinghe West Road, Yanggu County Liaocheng 252059 Shandong P. R. China
| | - Xianqiang Huang
- Chemistry and Chemical Engineering Liaocheng University 1 Hunan Avenue Liaocheng 252000 Shandong P. R. China
| | - Mengcheng Du
- National Rubber Additive Engineering Technology Center 399 Qinghe West Road, Yanggu County Liaocheng 252059 Shandong P. R. China
| | - Delong Ma
- National Rubber Additive Engineering Technology Center 399 Qinghe West Road, Yanggu County Liaocheng 252059 Shandong P. R. China
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10
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Liang T, Zhao H, Gong L, Jiang H, Zhang M. Synthesis of functionalized benzimidazoles via oxidative tandem quartic C-H aminations and cleavage of C-N and C-C bonds. Chem Commun (Camb) 2021; 57:12976-12979. [PMID: 34792066 DOI: 10.1039/d1cc05521f] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
Via aerobic copper-catalyzed tandem quartic C-H aminations, we herein present an unprecedented approach for the synthesis of functionalized benzimidazoles from aniline derivatives and 2-substituted cyclic amines. The cyclic amines act as the CN building blocks and are involved in the annulation reaction by cleavage of inert α-C-N and β-C-C bonds. The synthetic protocol features high selectivity, no need for specific aminating agents, mild conditions, and the use of a naturally abundant [Cu]/O2 catalyst system.
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Affiliation(s)
- Taoyuan Liang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China.
| | - He Zhao
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China.
| | - Lingzhen Gong
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China.
| | - Huanfeng Jiang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China.
| | - Min Zhang
- Key Lab of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Wushan Rd-381, Guangzhou 510641, People's Republic of China. .,Qingyuan Huayuan Institute of Science and Technology Collaborative Innovation Co., Ltd, Qingyuan 511500, People's Republic of China
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11
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Dong C, Huang L, Guan Z, Huang C, He Y. Visible‐Light‐Mediated Aerobic Oxidative C(
sp
3
)−C(
sp
3
) Bond Cleavage of Morpholine Derivatives Using 4CzIPN as a Photocatalyst. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100455] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Chun‐Lin Dong
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University Chongqing 400715 People's Republic of China
| | - Lan‐Qian Huang
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University Chongqing 400715 People's Republic of China
| | - Zhi Guan
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University Chongqing 400715 People's Republic of China
| | - Chu‐Sheng Huang
- Guangxi Teachers Education University Nanning 530001 People's Republic of China
| | - Yan‐Hong He
- Key Laboratory of Applied Chemistry of Chongqing Municipality School of Chemistry and Chemical Engineering Southwest University Chongqing 400715 People's Republic of China
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12
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Peng L, Ma L, Ran Y, Chen Y, Zeng Z. Metal-free three-component synthesis of thioamides from β-nitrostyrenes, amines and elemental sulfur. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153092] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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