1
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Ge FB, Lu CJ, Chen X, Yao W, An M, Jiang YK, Xu LP, Liu RR. Enantioselective Nickel-Catalyzed Denitrogenative Transannulation En Route to N-N Atropisomers. Angew Chem Int Ed Engl 2024; 63:e202400441. [PMID: 38587149 DOI: 10.1002/anie.202400441] [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: 01/31/2024] [Revised: 04/06/2024] [Accepted: 04/08/2024] [Indexed: 04/09/2024]
Abstract
Nickel-catalyzed transannulation reactions triggered by the extrusion of small gaseous molecules have emerged as a powerful strategy for the efficient construction of heterocyclic compounds. However, their use in asymmetric synthesis remains challenging because of the difficulty in controlling stereo- and regioselectivity. Herein, we report the first nickel-catalyzed asymmetric synthesis of N-N atropisomers by the denitrogenative transannulation of benzotriazones with alkynes. A broad range of N-N atropisomers was obtained with excellent regio- and enantioselectivity under mild conditions. Moreover, density functional theory (DFT) calculations provided insights into the nickel-catalyzed reaction mechanism and enantioselectivity control.
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Affiliation(s)
- Fang-Bei Ge
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Chuan-Jun Lu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Xiao Chen
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Wang Yao
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Mei An
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Yu-Kun Jiang
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
| | - Li-Ping Xu
- School of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, China
| | - Ren-Rong Liu
- College of Chemistry and Chemical Engineering, Qingdao University, Ningxia Road 308#, Qingdao, 266071, China
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2
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Wang Z, Chen Y, Dong Z, Tang Y. Natural Product-Oriented Photo-Induced Denitrogenative Annulations of 1-Alkenylbenzotriazoles. MOLECULES (BASEL, SWITZERLAND) 2023; 28:molecules28010363. [PMID: 36615557 PMCID: PMC9823906 DOI: 10.3390/molecules28010363] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 11/21/2022] [Revised: 12/24/2022] [Accepted: 12/26/2022] [Indexed: 01/04/2023]
Abstract
The photo-induced denitrogenative annulations of a variety of 1-alkenylbenzotriazoles were investigated. By judiciously manipulating the structural variations of 1-alkenylbenzotriazoles, two characteristic polycyclic skeletons associated with monoterpene indole alkaloids were constructed through a diverted and controllable manner. The present work not only enriches the photochemistry of 1-alkenylbenzotriazoles, but also offers a unified approach to access skeletally diverse indole alkaloid scaffolds.
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Affiliation(s)
- Zhiguo Wang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
- College of Chemical Engineering, Qinghai University, Xining 810016, China
| | - Yi Chen
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Zhen Dong
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
| | - Yefeng Tang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing 100084, China
- Correspondence:
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3
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Chen Y, Renson S, Monbaliu JM. On Demand Flow Platform for the Generation of Anhydrous Dinitrogen Trioxide and Its Further Use in N-Nitrosative Reactions. Angew Chem Int Ed Engl 2022; 61:e202210146. [PMID: 35971898 PMCID: PMC9825874 DOI: 10.1002/anie.202210146] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/11/2022] [Indexed: 01/11/2023]
Abstract
Dinitrogen trioxide (N2 O3 ) is a powerful and efficient nitrosating agent that comes with an unprecedented atom economy. However, the synthetic application of N2 O3 is still underdeveloped mostly due to its inherent instability and the lack of reliable protocols for its preparation. This paper presents an open-source setup and procedure for the on-demand generation of anhydrous N2 O3 solution (up to 1 M), which can be further used for reactions under batch and flow conditions. The accuracy and stability of N2 O3 concentration are guaranteed with the absence of head-space in the setup and with the synchronization of the gas flows. The reliability of this protocol is demonstrated by >30 worked examples in the nitrosative synthesis of heterocycles-a library of structurally diverse benzotriazoles and sydnones. Kinetic and mechanistic aspects of the N-nitrosative steps are also explored.
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Affiliation(s)
- Yuesu Chen
- Center for Integrated Technology and Organic Synthesis (CiTOS)MolSys Research Unit, University of LiègeB6a, Room 3/19, Allée du Six Août 134000LiègeSart TilmanBelgium
| | - Sébastien Renson
- Center for Integrated Technology and Organic Synthesis (CiTOS)MolSys Research Unit, University of LiègeB6a, Room 3/19, Allée du Six Août 134000LiègeSart TilmanBelgium
| | - Jean‐Christophe M. Monbaliu
- Center for Integrated Technology and Organic Synthesis (CiTOS)MolSys Research Unit, University of LiègeB6a, Room 3/19, Allée du Six Août 134000LiègeSart TilmanBelgium
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4
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Chen Y, Renson S, Monbaliu JCM. On Demand Flow Platform for the Generation of Anhydrous Dinitrogen Trioxide and Its Further Use in N‐Nitrosative Reactions. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202210146] [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)
- Yuesu Chen
- University of Liege: Universite de Liege Center for Integrated Technology and Organic Synthesis BELGIUM
| | - Sébastien Renson
- University of Liege: Universite de Liege Center for Integrated Technology and Organic Synthesis BELGIUM
| | - Jean-Christophe M. Monbaliu
- University of Liège Chemistry Center for Integrated Technology and Organic SynthesisAllée du six Aout 13, Sart-Tilman 4000 Liège BELGIUM
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5
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Zhu K, Cao M, Zhao G, Zhao J, Li P. Visible Light-Promoted Diazoacetates and Nitriles Generating Nitrilium Ions Trapped by Benzotriazoles and Carboxylic Acids. Org Lett 2022; 24:5855-5859. [PMID: 35916596 DOI: 10.1021/acs.orglett.2c02426] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
A visible light-promoted generation of nitrilium ions from diazoacetates and nitriles has been developed. The reaction utilized visible light transformation of diazoacetates to the free carbene that could be trapped by nitriles to generate nitrilium ions, followed by nucleophilic attack on the benzotriazoles and carboxylic acids. This protocol provides an efficient and practical approach to N-imidoylbenzotriazoles and diacylglycine esters in good to excellent yields.
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Affiliation(s)
- Keyong Zhu
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Mengting Cao
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Guanzhen Zhao
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Jingjing Zhao
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
| | - Pan Li
- College of Chemistry and Chemical Engineering, Henan University, Kaifeng 475004, P. R. China
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6
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Li Y, Tung CH, Xu Z. Synthesis of Benzofuran Derivates via a Gold-Catalyzed Claisen Rearrangement Cascade. Org Lett 2022; 24:5829-5834. [PMID: 35912957 DOI: 10.1021/acs.orglett.2c02388] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
A novel method toward a facile synthesis of diverse benzofuran derivates from easily obtained quinols and alkynyl esters has been reported. A gold-catalyzed intermolecular alkoxylation/Claisen rearrangement/condensation cascade was involved. The introduction of difluorodiphenylsilane as a water-trapping reagent in the reaction leads to a higher yield.
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Affiliation(s)
- Yankun Li
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Shandong University, No. 27 Shanda South Road, Jinan 250100, China
| | - Chen-Ho Tung
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Shandong University, No. 27 Shanda South Road, Jinan 250100, China
| | - Zhenghu Xu
- Key Lab for Colloid and Interface Chemistry of Education Ministry, Shandong University, No. 27 Shanda South Road, Jinan 250100, China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, China
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7
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An T, Liu C, Yin Y, Wu XF, Yin Z. Palladium-Catalyzed Denitrogenative Carbonylation of Benzotriazoles with Cr(CO) 6 as the Carbonyl Source. Organometallics 2022. [DOI: 10.1021/acs.organomet.2c00243] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Tongshun An
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Chenwei Liu
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Yanzhao Yin
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, P. R. China
| | - Xiao-Feng Wu
- Dalian National Laboratory for Clean Energy, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, P. R. China
- Leibniz-Institut für Katalyse e.V., Albert-Einstein-Straße 29a, 18059 Rostock, Germany
| | - Zhiping Yin
- School of Pharmacy, Jiangsu University, Zhenjiang 212013, P. R. China
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8
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Omar AZ, Alshaye NA, Mosa TM, El-Sadany SK, Hamed EA, El-Atawy MA. Synthesis and Antimicrobial Activity Screening of Piperazines Bearing N, N'-Bis(1,3,4-thiadiazole) Moiety as Probable Enoyl-ACP Reductase Inhibitors. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27123698. [PMID: 35744824 PMCID: PMC9228617 DOI: 10.3390/molecules27123698] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/13/2022] [Revised: 05/29/2022] [Accepted: 05/29/2022] [Indexed: 11/16/2022]
Abstract
A new N,N'-disubstituted piperazine conjugated with 1,3,4-thiadiazole and 1,2,4-triazole was prepared and the chemical structures were identified by IR, NMR and elemental analysis. All the prepared compounds were tested for their antimicrobial activity. The antimicrobial results indicated that the tested compounds showed significant antibacterial activity against gram-negative strains, especially E. coli, relative to gram-positive bacteria. Docking analysis was performed to support the biological results; binding modes with the active site of enoyl reductase amino acids from E. coli showed very good scores, ranging from -6.1090 to -9.6184 kcal/mol. Correlation analysis was performed for the inhibition zone (nm) and the docking score.
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Affiliation(s)
- Alaa Z. Omar
- Chemistry Department, Faculty of Science, Alexandria University, P.O. 426 Ibrahemia, Alexandria 21321, Egypt; (T.M.M.); (S.K.E.-S.); (E.A.H.)
- Correspondence: (A.Z.O.); (M.A.E.-A.)
| | - Najla A. Alshaye
- Department of Chemistry, College of Science, Princess Nourah Bint Abdulrahman University, P.O. Box 84428, Riyadh 11671, Saudi Arabia;
| | - Tawfik M. Mosa
- Chemistry Department, Faculty of Science, Alexandria University, P.O. 426 Ibrahemia, Alexandria 21321, Egypt; (T.M.M.); (S.K.E.-S.); (E.A.H.)
| | - Samir K. El-Sadany
- Chemistry Department, Faculty of Science, Alexandria University, P.O. 426 Ibrahemia, Alexandria 21321, Egypt; (T.M.M.); (S.K.E.-S.); (E.A.H.)
| | - Ezzat A. Hamed
- Chemistry Department, Faculty of Science, Alexandria University, P.O. 426 Ibrahemia, Alexandria 21321, Egypt; (T.M.M.); (S.K.E.-S.); (E.A.H.)
| | - Mohamed A. El-Atawy
- Chemistry Department, Faculty of Science, Alexandria University, P.O. 426 Ibrahemia, Alexandria 21321, Egypt; (T.M.M.); (S.K.E.-S.); (E.A.H.)
- Chemistry Department, Faculty of Science, Taibah University, Yanbu 46423, Saudi Arabia
- Correspondence: (A.Z.O.); (M.A.E.-A.)
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9
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Feberero C, Virumbrales C, Sedano C, Renedo L, Suárez-Pantiga S, Sanz R. Transition Metal-Free Synthesis of Halobenzo[ b]furans from O-Aryl Carbamates via o-Lithiation Reactions. MOLECULES (BASEL, SWITZERLAND) 2022; 27:molecules27020525. [PMID: 35056842 PMCID: PMC8778012 DOI: 10.3390/molecules27020525] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/21/2021] [Revised: 01/10/2022] [Accepted: 01/11/2022] [Indexed: 11/16/2022]
Abstract
A straightforward and transition metal-free one-pot protocol to synthesize halobenzo[b]furans has been developed employing simple and easily available starting materials such as O-aryl carbamates and alkynylsulfones. The fine-tuning of the different steps involved was key to achieving a successful one-pot procedure. Initially, a directed ortho-lithiation process, which uses the carbamate as the directed metalation group, was crucial in providing access to O-2-alkynylaryl N,N-diethyl carbamates by a direct alkynylation of the o-lithiated carbamate, with arylsulfonylalkynes as electrophilic reagents. Cyclization of the generated o-alkynylaryl carbamates was successfully accomplished through a strategy involving in situ carbamate alkaline hydrolysis under conventional heating or microwave irradiation, coupled with a subsequent heterocyclization step delivering the desired benzo[b]furans. A wide variety of new halobenzo[b]furans has been synthesized and their utility has been demonstrated by their further transformation.
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10
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Luo X, Tian A, Pei M, Yan J, Liu X, Wang L. Highly Stable Univalent Copper of a Cu@Al/SBA-15 Nanocomposite Catalyzes the Synthesis of Fluorescent Aminobenzotriazoles Derivatives. Chemistry 2021; 28:e202103361. [PMID: 34841580 DOI: 10.1002/chem.202103361] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2021] [Indexed: 12/21/2022]
Abstract
With the development of green chemistry, it is still a challenge to maintain the unstable valence state of the metal in heterogeneous catalysts and realize new catalytic synthesis methods. In this paper, it is reported that an univalent copper nanocomposite (Cu@Al/SBA-15) can efficiently catalyze the formation of novel amino-containing benzotriazoles with great fluorescence properties in a new synthetic strategy. Subsequently, its application is further verified by an acylation reaction to produce a series of novel benzotriazoles derivatives with high yield. It is worth noting that the Cu@Al/SBA-15 nanocomposites not only enable the reaction completed with high yield in a short time, but can also be recycled many times without a significant reduction in activity, and the leaching of copper and aluminum species in reaction system is negligible. Finally, the detailed and feasible reaction mechanism is also provided.
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Affiliation(s)
- Xianghao Luo
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials, College of Materials and Chemical Engineering, China Three Gorges University Yichang, Hubei, 443002, China
| | - Anqi Tian
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials, College of Materials and Chemical Engineering, China Three Gorges University Yichang, Hubei, 443002, China
| | - Mengyu Pei
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials, College of Materials and Chemical Engineering, China Three Gorges University Yichang, Hubei, 443002, China
| | - Jiaying Yan
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials, College of Materials and Chemical Engineering, China Three Gorges University Yichang, Hubei, 443002, China
| | - Xiang Liu
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials, College of Materials and Chemical Engineering, China Three Gorges University Yichang, Hubei, 443002, China
| | - Long Wang
- Key laboratory of inorganic nonmetallic crystalline and energy conversion materials, College of Materials and Chemical Engineering, China Three Gorges University Yichang, Hubei, 443002, China.,Hubei Three Gorges Laboratory Yichang, Hubei, 443007, China
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11
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Lipshultz JM, Radosevich AT. Uniting Amide Synthesis and Activation by P III/P V-Catalyzed Serial Condensation: Three-Component Assembly of 2-Amidopyridines. J Am Chem Soc 2021; 143:14487-14494. [PMID: 34478308 DOI: 10.1021/jacs.1c07608] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
An organophosphorus (PIII/PV redox) catalyzed method for the three-component condensation of amines, carboxylic acids, and pyridine N-oxides to generate 2-amidopyridines via serial dehydration is reported. Whereas amide synthesis and functionalization usually occur under divergent reaction conditions, here a phosphetane catalyst (together with a mild bromenium oxidant and terminal hydrosilane reductant) is shown to drive both steps chemoselectively in an auto-tandem catalytic cascade. The ability to both prepare and functionalize amides under the action of a single organocatalytic reactive intermediate enables new possibilities for the efficient and modular preparation of medicinal targets.
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Affiliation(s)
- Jeffrey M Lipshultz
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
| | - Alexander T Radosevich
- Department of Chemistry, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, United States
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12
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Li YL, Zhang PC, Wu HH, Zhang J. Palladium-Catalyzed Asymmetric Tandem Denitrogenative Heck/Tsuji-Trost of Benzotriazoles with 1,3-Dienes. J Am Chem Soc 2021; 143:13010-13015. [PMID: 34402615 DOI: 10.1021/jacs.1c07212] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The asymmetric denitrogenative cycloaddition has emerged as a powerful tool to build chiral aza-heterocyles. However, only one example of asymmetric denitrogenative cycloaddition of benzotriazole with unsaturated hydrocarbons has been explored so far, because the ring-opening of benzotriazole to generate α-imino metal carbenoid species is a thermodynamically unfavorable process. We herein report an efficient asymmetric denitrogenative cycloaddition of benzotriazoles with cyclic and acyclic 1,3-dienes enabled by Pd and chiral sulfonamide phosphine ligand. A variety of substituted hexahydrocarbazoles and indolines were delivered in good yields with high ee values. Interestingly, a pair of enantiomers could be obtained with the use of Xu1 and PC2 with the same absolute configuration. The synthetic utilities of the optically active hexahydrocarbazoles were also showcased.
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Affiliation(s)
- Yin-Lin Li
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Pei-Chao Zhang
- Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
| | - Hai-Hong Wu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai 200062, P. R. China.,Department of Chemistry, Fudan University, 2005 Songhu Road, Shanghai 200438, P. R. China
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13
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Hu L, Dietl MC, Han C, Rudolph M, Rominger F, Hashmi ASK. Au-Ag Bimetallic Catalysis: 3-Alkynyl Benzofurans from Phenols via Tandem C-H Alkynylation/Oxy-Alkynylation. Angew Chem Int Ed Engl 2021; 60:10637-10642. [PMID: 33617065 PMCID: PMC8252013 DOI: 10.1002/anie.202016595] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 01/27/2021] [Indexed: 01/17/2023]
Abstract
The development of new methodologies enabling a facile access to valuable heterocyclic frameworks still is an important subject of research. In this context, we describe a dual catalytic cycle merging C-H alkynylation of phenols and oxy-alkynylation of the newly introduced triple bond by using a unique redox property and the carbophilic π acidity of gold. Mechanistic studies support the participation of a bimetallic gold-silver species. The one-pot protocol offers a direct, simple, and regio-specific approach to 3-alkynyl benzofurans from readily available phenols. A broad range of substrates, including heterocycles, is transferred with excellent functional group tolerance. Thus, this methodology can be used for the late-stage incorporation of benzofurans.
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Affiliation(s)
- Long Hu
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm NeuenheimerFeld 27069120HeidelbergGermany
| | - Martin C. Dietl
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm NeuenheimerFeld 27069120HeidelbergGermany
| | - Chunyu Han
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm NeuenheimerFeld 27069120HeidelbergGermany
| | - Matthias Rudolph
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm NeuenheimerFeld 27069120HeidelbergGermany
| | - Frank Rominger
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm NeuenheimerFeld 27069120HeidelbergGermany
| | - A. Stephen K. Hashmi
- Organisch-Chemisches InstitutRuprecht-Karls-Universität HeidelbergIm NeuenheimerFeld 27069120HeidelbergGermany
- Chemistry DepartmentFaculty of ScienceKing Abdulaziz University (KAU)21589JeddahSaudi Arabia
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14
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Hu L, Dietl MC, Han C, Rudolph M, Rominger F, Hashmi ASK. Au‐Ag‐Bimetallkatalyse: 3‐Alkinylbenzofurane aus Phenolen durch Tandem‐C‐H‐Alkinylierung/Oxyalkinylierung. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202016595] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Long Hu
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im NeuenheimerFeld 270 69120 Heidelberg Deutschland
| | - Martin C. Dietl
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im NeuenheimerFeld 270 69120 Heidelberg Deutschland
| | - Chunyu Han
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im NeuenheimerFeld 270 69120 Heidelberg Deutschland
| | - Matthias Rudolph
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im NeuenheimerFeld 270 69120 Heidelberg Deutschland
| | - Frank Rominger
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im NeuenheimerFeld 270 69120 Heidelberg Deutschland
| | - A. Stephen K. Hashmi
- Organisch-Chemisches Institut Ruprecht-Karls-Universität Heidelberg Im NeuenheimerFeld 270 69120 Heidelberg Deutschland
- Chemistry Department Faculty of Science King Abdulaziz University (KAU) 21589 Jeddah Saudi Arabien
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15
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Zhu Z, Liu S, Hu Z, Xie Z, Tang J, Le Z. Visible‐Light‐Induced Aerobic Oxidative C
sp
3
−H Functionalization of Glycine Derivatives for 2‐Substituted Benzoxazoles. Adv Synth Catal 2021. [DOI: 10.1002/adsc.202100134] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Zhi‐Qiang Zhu
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
| | - Shan Liu
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
| | - Zhi‐Yu Hu
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
| | - Zong‐Bo Xie
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
| | - Juan Tang
- Ministry of Education Key Laboratory of Functional Small Organic Molecule Department of Chemistry and Chemical Engineering Jiangxi Normal University Nanchang 330022 People's Republic of China
| | - Zhang‐Gao Le
- Jiangxi Province Key Laboratory of Synthetic Chemistry School of Chemistry Biology and Material Science East China University of Technology Nanchang 330013 People's Republic of China
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16
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Kleoff M, Boeser L, Baranyi L, Heretsch P. Scalable Synthesis of Benzotriazoles via [3+2] Cycloaddition of Azides and Arynes in Flow. European J Org Chem 2021. [DOI: 10.1002/ejoc.202001543] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
Affiliation(s)
- Merlin Kleoff
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Lisa Boeser
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Linda Baranyi
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Germany
| | - Philipp Heretsch
- Institut für Chemie und Biochemie Freie Universität Berlin Takustraße 3 14195 Berlin Germany
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17
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Tang S, Yu J, Shao Y, Sun J. Scandium-catalyzed highly selective N2-alkylation of benzotriazoles with cyclohexanones. Org Chem Front 2021. [DOI: 10.1039/d0qo01060j] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
A scandium-catalyzed highly N2-selective alkylation of benzotriazoles with cyclohexanones has been developed.
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Affiliation(s)
- Shengbiao Tang
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Jianliang Yu
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Ying Shao
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
| | - Jiangtao Sun
- Jiangsu Key Laboratory of Advanced Catalytic Materials & Technology
- School of Petrochemical Engineering
- Changzhou University
- Changzhou 213164
- China
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18
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Jones EV, Chen D, Wright SW, Trujillo JI, France S. Elucidation of a Sequential Iminium Ion Cascade Reaction Triggered by a Silica Gel-Promoted Aza-Peterson Reaction. J Org Chem 2020; 85:15660-15666. [PMID: 33226802 DOI: 10.1021/acs.joc.0c02102] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Abstract
In a recent methodological study investigating the synthesis of N-alkoxyazomethine ylides, an unexpected aminal byproduct was generated during our attempt to isolate O-benzyl-N-((trimethylsilyl)methyl)hydroxylamine. After a strategic investigation, silica gel was discovered to be the cause of the byproduct formation. Through the mechanistic insight from control and trapping experiments, we propose the formation of a methaniminium ion via a novel aza-Peterson reaction, which ultimately triggers a sequential iminium ion cascade sequence. Herein, we discuss the elucidation of this cascade reaction mechanism and the constraints for the byproduct formation.
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Affiliation(s)
- Elizabeth V Jones
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Doris Chen
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
| | - Stephen W Wright
- Medicine Design, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - John I Trujillo
- Medicine Design, Pfizer Worldwide Research and Development, 445 Eastern Point Road, Groton, Connecticut 06340, United States
| | - Stefan France
- School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, Georgia 30332, United States.,Petit Institute for Bioengineering and Bioscience, Georgia Institute of Technology, Atlanta, Georgia 30332, United States
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19
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Bokhtia RM, Panda SS, Girgis AS, Pillai GG, Ibrahim TS, Shalaby EM, Gigli L, Abdel‐Aal EH, Al‐Mahmoudy AMM. Efficient Synthesis and Computational Studies of Useful Guanylating Agents: 1
H
‐Benzotriazole‐1‐carboximidamides. ChemistrySelect 2020. [DOI: 10.1002/slct.202003796] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Riham M. Bokhtia
- Department of Chemistry & Physics Augusta University 1120 15th Street Augusta GA 30912 USA
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy Zagazig University Zagazig, 44519 Egypt
| | - Siva S. Panda
- Department of Chemistry & Physics Augusta University 1120 15th Street Augusta GA 30912 USA
| | - Adel S. Girgis
- Department of Pesticide Chemistry National Research Centre Dokki Giza 12622 Egypt
| | | | - Tarek S. Ibrahim
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy Zagazig University Zagazig, 44519 Egypt
- Department of Pharmaceutical Chemistry King Abdulaziz University Jeddah 21589 Saudi Arabia
| | - ElSayed M. Shalaby
- X-Ray Crystallography Lab. Physics Division National Research Centre Dokki Giza 12622 Egypt
| | - Lara Gigli
- Elettra-Sincrotrone Trieste s.s. 14 Km 163.5 in Area Science Park, Basovizza Trieste 34149 Italy
| | - Eatedal H. Abdel‐Aal
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy Zagazig University Zagazig, 44519 Egypt
| | - Amany M. M. Al‐Mahmoudy
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy Zagazig University Zagazig, 44519 Egypt
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20
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Yang J, Duan J, Wang G, Zhou H, Ma B, Wu C, Xiao J. Visible-Light-Promoted Site-Selective N1-Alkylation of Benzotriazoles with α-Diazoacetates. Org Lett 2020; 22:7284-7289. [DOI: 10.1021/acs.orglett.0c02619] [Citation(s) in RCA: 24] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jingya Yang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Jiaokui Duan
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Ganggang Wang
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Hongyan Zhou
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
- College of Science, Gansu Agricultural University, Lanzhou 730070, China
| | - Ben Ma
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Chengqi Wu
- College of Chemistry and Chemical Engineering, Northwest Normal University, Lanzhou 730070, China
| | - Jianliang Xiao
- Department of Chemistry, University of Liverpool, Liverpool L69 7ZD, United Kingdom
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21
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Marín-Luna M, Claramunt RM, Elguero J, Alkorta I. Theoretical and Spectroscopic Characterization of API-Related Azoles in Solution and in Solid State. Curr Pharm Des 2020; 26:4847-4857. [PMID: 32811407 DOI: 10.2174/1381612826666200818212846] [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: 12/26/2019] [Accepted: 06/27/2020] [Indexed: 12/13/2022]
Abstract
Azoles are a family of five-membered azacyclic compounds with relevant biological and pharmacological activity. Different subclasses of azoles are defined depending on the atomic arrangement and the number of nitrogen atoms present in the ring: pyrazoles, indazoles, imidazoles, benzimidazoles, triazoles, benzotriazoles, tetrazoles and pentazoles. The complete characterization of their structure and the knowledge about their crystal packing and physical and chemical properties are of vital importance for the advancement in the design of new azole-containing drugs. In this review, we report the latest recent contributions to azole chemistry, in particular, those in which theoretical studies have been performed.
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Affiliation(s)
- Marta Marín-Luna
- Departamento de Química Orgánica, Facultad de Química, Universidad de Murcia, Regional Campus of International Excellence "Campus Mare Nostrum", 30100 Murcia, Spain
| | - Rosa M Claramunt
- Departamento de Química Orgánica y Bio-Orgánica, Facultad de Ciencias, UNED, Paseo Senda del Rey, 9, E-28040 Madrid, Spain
| | - José Elguero
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
| | - Ibon Alkorta
- Instituto de Química Médica, CSIC, Juan de la Cierva, 3, E-28006 Madrid, Spain
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22
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Li W, Zhang J. Synthesis of Heterocycles through Denitrogenative Cyclization of Triazoles and Benzotriazoles. Chemistry 2020; 26:11931-11945. [DOI: 10.1002/chem.202000674] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/07/2020] [Revised: 05/07/2020] [Indexed: 11/11/2022]
Affiliation(s)
- Wenbo Li
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 N. Zhongshan Road Shanghai 20062 P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical ProcessesSchool of Chemistry and Molecular EngineeringEast China Normal University 3663 N. Zhongshan Road Shanghai 20062 P. R. China
- Department of ChemistryFudan University 2005 Songhu Road Shanghai 20048 P. R. China
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23
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Ibrahim TS, Seliem IA, Panda SS, Al-Mahmoudy AMM, Abdel-Samii ZKM, Alhakamy NA, Asfour HZ, Elagawany M. An Efficient Greener Approach for N-Acylation of Amines in Water Using Benzotriazole Chemistry. Molecules 2020; 25:E2501. [PMID: 32481504 PMCID: PMC7321353 DOI: 10.3390/molecules25112501] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2020] [Revised: 05/25/2020] [Accepted: 05/26/2020] [Indexed: 01/03/2023] Open
Abstract
A straightforward, mild and cost-efficient synthesis of various arylamides in water was accomplished using versatile benzotriazole chemistry. Acylation of various amines was achieved in water at room temperature as well as under microwave irradiation. The developed protocol unfolds the synthesis of amino acid aryl amides, drug conjugates and benzimidazoles. The environmentally friendly synthesis, short reaction time, simple workup, high yields, mild conditions and free of racemization are the key advantages of this protocol.
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Affiliation(s)
- Tarek S. Ibrahim
- Department of Pharmaceutical Chemistry, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (I.A.S.); (A.M.M.A.-M.); (Z.K.M.A.-S.)
| | - Israa A. Seliem
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (I.A.S.); (A.M.M.A.-M.); (Z.K.M.A.-S.)
- Department of Chemistry & Physics, Augusta University, Augusta, GA 30912, USA
| | - Siva S. Panda
- Department of Chemistry & Physics, Augusta University, Augusta, GA 30912, USA
| | - Amany M. M. Al-Mahmoudy
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (I.A.S.); (A.M.M.A.-M.); (Z.K.M.A.-S.)
| | - Zakaria K. M. Abdel-Samii
- Department of Pharmaceutical Organic Chemistry, Faculty of Pharmacy, Zagazig University, Zagazig 44519, Egypt; (I.A.S.); (A.M.M.A.-M.); (Z.K.M.A.-S.)
| | - Nabil A. Alhakamy
- Department of Pharmaceutics, Faculty of Pharmacy, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Hani Z. Asfour
- Department of Medical Microbiology and Parasitology, Faculty of Medicine, King Abdulaziz University, Jeddah 21589, Saudi Arabia;
| | - Mohamed Elagawany
- Department of Pharmaceutical Chemistry, faculty of pharmacy, Damanhour University, Damanhour 22511, Egypt;
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24
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Tan JP, Li X, Chen Y, Rong X, Zhu L, Jiang C, Xiao K, Wang T. Highly stereoselective construction of polycyclic benzofused tropane scaffolds and their latent bioactivities: bifunctional phosphonium salt-enabled cyclodearomatization process. Sci China Chem 2020. [DOI: 10.1007/s11426-020-9754-7] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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25
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Henry MC, Sutherland A. Synthesis of Benzo[ b]furans by Intramolecular C-O Bond Formation Using Iron and Copper Catalysis. Org Lett 2020; 22:2766-2770. [PMID: 32186389 PMCID: PMC7146889 DOI: 10.1021/acs.orglett.0c00754] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Indexed: 01/08/2023]
Abstract
One-pot processes for the synthesis of benzo[b]furans from 1-aryl- or 1-alkylketones using nonprecious transition metal catalysts have been developed. Regioselective iron(III)-catalyzed halogenation of the aryl ring, followed by iron- or copper-catalyzed O-arylation allowed the synthesis of various structural analogues, including the benzo[b]furan-derived natural products corsifuran C, moracin F, and caleprunin B.
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Affiliation(s)
- Martyn C. Henry
- WestCHEM, School of Chemistry, The Joseph
Black Building, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
| | - Andrew Sutherland
- WestCHEM, School of Chemistry, The Joseph
Black Building, University of Glasgow, University Avenue, Glasgow G12 8QQ, United Kingdom
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26
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Galenko EE, Shakirova FM, Bodunov VA, Novikov MS, Khlebnikov AF. 1-(2H-Azirine-2-carbonyl)benzotriazoles: building blocks for the synthesis of pyrrole-containing heterocycles. Org Biomol Chem 2020; 18:2283-2296. [PMID: 32154550 DOI: 10.1039/d0ob00206b] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022]
Abstract
A one-pot method was developed for the preparation of 2H-azirine-2-carbonylbenzotriazoles, formed by the reaction of benzotriazole with 2H-azirine-2-carbonyl chlorides, which were generated by the Fe(ii)-catalyzed isomerization of 5-chloroisoxazoles. The Co(ii)-catalyzed reaction of 2H-azirine-2-carbonylbenzotriazoles with 1,3-diketones provides 2-((benzotriazol-1-yl)carbonyl)pyrroles in moderate to good yields. Base-promoted annulations of 2-((benzotriazol-1-yl)carbonyl)pyrroles with aldehydes, ketones, isocyanates and isothiocyanates afford various substituted pyrrolo[1,2-c]oxazole and 1H-pyrrolo[1,2-c]imidazole derivatives in moderate to high yields. The 6-acyl group of these adducts can be removed by triflic acid, giving further new pyrrolo-fused O- and N-heterocycles, such as 6-unsubstituted pyrrolo[1,2-c]oxazol-1(3H)-one and 1H-pyrrolo[1,2-c]imidazole-1,3(2H)-dione, while the 6-acetyl substituent of 1H-pyrrolo[1,2-c]imidazole-1,3(2H)-dione, when treated with POCl3/pyridine, is transformed into the 6-ethynyl substituent.
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Affiliation(s)
- Ekaterina E Galenko
- St Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St Petersburg, 199034, Russia.
| | - Firuza M Shakirova
- St Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St Petersburg, 199034, Russia.
| | - Vladimir A Bodunov
- St Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St Petersburg, 199034, Russia.
| | - Mikhail S Novikov
- St Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St Petersburg, 199034, Russia.
| | - Alexander F Khlebnikov
- St Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St Petersburg, 199034, Russia.
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27
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Wang Y, Wang Z, Tang Y. Renaissance of Ring-Opening Chemistry of Benzotriazoles: New Wine in an Old Bottle. CHEM REC 2020; 20:693-709. [PMID: 31916676 DOI: 10.1002/tcr.201900088] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2019] [Revised: 12/11/2019] [Accepted: 12/16/2019] [Indexed: 12/18/2022]
Abstract
1,2,3-Benzotriazoles could undergo ring cleavage to form ortho-amino arenediazonium or α-diazo-imine species via a Dimroth-type equilibrium. Historically, the synthetic potential of this unique reactivity had remained underdeveloped. Recently, some new strategies have been developed to effect the ring-opening chemistry of benzotriazoles in more practical manners. A wide range of conceptually novel and synthetically useful reactions have been developed, which enable the access to diverse valuable heterocycles and ortho-amino arene derivatives. As one of the players in this field, our group has also contributed a series of intriguing transition-metal-catalyzed denitrogenative functionalizations of benzotriazoles. In this account, we aim to provide an overview of the ring-opening chemistry of benzotriazoles, with a focus on relevant works published in the past decade. In order to show a whole picture of the research field, some pioneering works in its developing history will also be discussed briefly.
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Affiliation(s)
- Yuanhao Wang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Zhiguo Wang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
| | - Yefeng Tang
- School of Pharmaceutical Sciences, MOE Key Laboratory of Bioorganic Phosphorus Chemistry & Chemical Biology, Tsinghua University, Beijing, 100084, China
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28
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Yahata K, Kaneko Y, Akai S. Cobalt-Catalyzed Intermolecular Markovnikov Hydroamination of Nonactivated Olefins: N2-Selective Alkylation of Benzotriazole. Org Lett 2020; 22:598-603. [DOI: 10.1021/acs.orglett.9b04375] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Affiliation(s)
- Kenzo Yahata
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Yuki Kaneko
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
| | - Shuji Akai
- Graduate School of Pharmaceutical Sciences, Osaka University, 1-6 Yamada-oka, Suita, Osaka 565-0871, Japan
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29
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Iqbal N, Iqbal N, Maiti D, Cho EJ. Access to Multifunctionalized Benzofurans by Aryl Nickelation of Alkynes: Efficient Synthesis of the Anti‐Arrhythmic Drug Amiodarone. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201909015] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Naeem Iqbal
- Department of Chemistry Chung-Ang University 84 Heukseok-ro Dongjak-gu Seoul 06974 Republic of Korea
| | - Naila Iqbal
- Department of Chemistry Chung-Ang University 84 Heukseok-ro Dongjak-gu Seoul 06974 Republic of Korea
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
| | - Eun Jin Cho
- Department of Chemistry Chung-Ang University 84 Heukseok-ro Dongjak-gu Seoul 06974 Republic of Korea
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30
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Iqbal N, Iqbal N, Maiti D, Cho EJ. Access to Multifunctionalized Benzofurans by Aryl Nickelation of Alkynes: Efficient Synthesis of the Anti‐Arrhythmic Drug Amiodarone. Angew Chem Int Ed Engl 2019; 58:15808-15812. [DOI: 10.1002/anie.201909015] [Citation(s) in RCA: 28] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/19/2019] [Revised: 08/12/2019] [Indexed: 12/22/2022]
Affiliation(s)
- Naeem Iqbal
- Department of Chemistry Chung-Ang University 84 Heukseok-ro Dongjak-gu Seoul 06974 Republic of Korea
| | - Naila Iqbal
- Department of Chemistry Chung-Ang University 84 Heukseok-ro Dongjak-gu Seoul 06974 Republic of Korea
| | - Debabrata Maiti
- Department of Chemistry Indian Institute of Technology Bombay, Powai Mumbai 400076 India
| | - Eun Jin Cho
- Department of Chemistry Chung-Ang University 84 Heukseok-ro Dongjak-gu Seoul 06974 Republic of Korea
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31
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Ieronimo G, Palmisano G, Maspero A, Marzorati A, Scapinello L, Masciocchi N, Cravotto G, Barge A, Simonetti M, Ameta KL, Nicholas KM, Penoni A. A novel synthesis of N-hydroxy-3-aroylindoles and 3-aroylindoles. Org Biomol Chem 2019; 16:6853-6859. [PMID: 30065979 DOI: 10.1039/c8ob01471j] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A straightforward indole synthesis via annulation of C-nitrosoaromatics with conjugated terminal alkynones was realised achieving a simple, highly regioselective, atom- and step economical access to 3-aroylindoles in moderate to good yields. Further functionalizations of indole scaffolds were investigated and an easy way to JWH-018, a synthetic cannabinoid, was achieved.
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Affiliation(s)
- Gabriella Ieronimo
- Dipartimento di Scienza e Alta Tecnologia, Università degli Studi dell'Insubria, via Valleggio 9, 22100, Como, Italy.
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32
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Zhu HP, Xie K, He XH, Huang W, Zeng R, Fan Y, Peng C, He G, Han B. Organocatalytic diastereoselective [3+2] cyclization of MBH carbonates with dinucleophiles: synthesis of bicyclic imidazoline derivatives that inhibit MDM2–p53 interaction. Chem Commun (Camb) 2019; 55:11374-11377. [PMID: 31478534 DOI: 10.1039/c9cc05916d] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
Abstract
MBH carbonates were successfully applied to a stereoselective [3+3] annulation with N,C-dinucleophiles for the first time, yielding a collection of pharmacologically interesting bicyclic imidazolines which were found to inhibit MDM2–p53 binding.
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Affiliation(s)
- Hong-Ping Zhu
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
- China
| | - Ke Xie
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- China
| | - Xiang-Hong He
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
- China
| | - Wei Huang
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
- China
| | - Rong Zeng
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- China
| | - Yang Fan
- Antibiotics Research and Re-evaluation Key Laboratory of Sichuan Province, Sichuan Industrial Institute of Antibiotics
- Chengdu University
- Chengdu 610052
- China
| | - Cheng Peng
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
- China
| | - Gu He
- State Key Laboratory of Biotherapy and Cancer Center
- West China Hospital, Sichuan University
- Chengdu 610041
- China
| | - Bo Han
- State Key Laboratory of Southwestern Chinese Medicine Resources
- School of Pharmacy
- Chengdu University of Traditional Chinese Medicine
- Chengdu
- China
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33
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Li B, Gao F, Feng X, Sun M, Guo Y, Wen D, Deng Y, Huang J, Wang K, Yan W. Highly efficient enantioselective synthesis of bispiro[benzofuran-oxindole-pyrrolidine]s through organocatalytic cycloaddition. Org Chem Front 2019. [DOI: 10.1039/c9qo00241c] [Citation(s) in RCA: 32] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first organocatalyzed [3 + 2] cyclisation of N-2,2,2-trifluoroethylisatin ketimines with aurones has been developed.
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34
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Singh N, Dar AA, Kumar A. A Simple and Efficient Approach for the Synthesis of 1,3-Oxazolidines from β-Amino Alcohols Using Grinding Technique. ChemistrySelect 2018. [DOI: 10.1002/slct.201802369] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Nasseb Singh
- Synthetic Organic Chemistry Laboratory; Faculty of Sciences; Shri Mata Vaishno Devi University Katra; Jammu and Kashmir - 182320 India
| | - Alamgir A. Dar
- Bioorganic Chemistry Division; CSIR-Indian Institute of Integrative Medicine; Canal Road, Jammu Tawi, J & K 180 001 India
- Research Centre for Residue and Quality Analysis; Sher-e-Kashmir University of Agricultural Sciences & Technology Kashmir; Srinagar - 190025, J & K India
| | - Anil Kumar
- Synthetic Organic Chemistry Laboratory; Faculty of Sciences; Shri Mata Vaishno Devi University Katra; Jammu and Kashmir - 182320 India
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35
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Umareddy P, Arava VR. Syntheses of 2-Aroyl 3-Aryl Benzofuran and Benzothiophenes. J Heterocycl Chem 2018. [DOI: 10.1002/jhet.3287] [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)
- Pailla Umareddy
- R&D Centre Suven Life Sciences Ltd; Plot No #18, Phase-III, Jeedimetla Hyderabad 500055 India
| | - Veera Reddy Arava
- R&D Centre Suven Life Sciences Ltd; Plot No #18, Phase-III, Jeedimetla Hyderabad 500055 India
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36
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Regioselective N 1 - or N 2 -modification of benzotriazoles with iodonium salts in the presence of copper compounds. MENDELEEV COMMUNICATIONS 2018. [DOI: 10.1016/j.mencom.2018.05.019] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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37
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Copper(I)-catalyzed α-arylation of carbonyl cascade reaction leading to benzo[4, 5] imidazo[1,2-f]phenanthridin-4(1H)-one derivatives. RESEARCH ON CHEMICAL INTERMEDIATES 2017. [DOI: 10.1007/s11164-017-2975-7] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
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38
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Davydov DV, Oprunenko YF, Beletskaya IP. Pd/Al 2 O 3 -catalysed regioselective N -1-modification of benzotriazoles using iodonium salts. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.10.033] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/18/2022]
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39
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Singh D, Silakari O. Facile alkylation of 4-nitrobenzotriazole and its platelet aggregation inhibitory activity. Bioorg Med Chem 2017; 25:5260-5267. [PMID: 28789912 DOI: 10.1016/j.bmc.2017.07.045] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2017] [Revised: 05/20/2017] [Accepted: 07/26/2017] [Indexed: 01/06/2023]
Abstract
We explored the facile alkylation of 4-nitrobenzotriazole under basic conditions and the synthesized derivatives were tested for their potential ADP induced platelet aggregation inhibition activity in comparison with standard drug ticagrelor (selective P2Y12 inhibitor). The nitro group at 4-position is highly activating toward alkylation reactions (under strong basic conditions) and resulted in formation of degradation product like 3-nitrobenzene-1,2-diamine which make isolation of alkyl products very difficult. We optimized the reaction under mild basic condition (potassium carbonate and DMF) which is devoid of any degradation product. This is perhaps the first report of 4-nitrobenzotriazole derivatives possessing platelet aggregation inhibitory activity. Generally activity increases with increase in length of alkyl chain and 1-alkyl positional isomers were found to be more potent than 2-alkyl isomers. The benzoyl derivative was found to be the most potent [compound 22; (4-Nitro-1H-benzotriazol-1-yl)(phenyl)methanone; IC50=0.65±0.10mM] which may be attributed to electronegative oxygen atom and aromatic ring. Benzyl derivatives [compound 20; 1-Benzyl-4-nitro-1H-benzotriazole; IC50=0.81±0.08mM, compound 21; 2-Benzyl-4-nitro-2H-benzotriazole; IC50=0.82±0.19mM] and sulfonyl derivative [compound 23; 1-[(4-Methylphenyl)sulfonyl]-4-nitro-1H-benzotriazole; IC50=0.82±0.19mM] are also found to be highly active. Furthermore, all compounds possess P2Y12 binding affinity as confirmed by VASP/P2Y12 phosphorylation assay.
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Affiliation(s)
- Dhandeep Singh
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala 147002, Punjab, India
| | - Om Silakari
- Department of Pharmaceutical Sciences and Drug Research, Punjabi University, Patiala 147002, Punjab, India.
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40
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Chen CH, Tsai WY, Luo ZH. Highly Fluorescent Conjugated Copolymers Constructed by Alternating Heterocyclic Diazoles and Alkoxy Benzene. J CHIN CHEM SOC-TAIP 2017. [DOI: 10.1002/jccs.201700184] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Chih-Hsien Chen
- Department of Chemical Engineering; Feng Chia University; Taichung Taiwan 407
| | - Wu-Yen Tsai
- Department of Chemical Engineering; Feng Chia University; Taichung Taiwan 407
| | - Zi-Huan Luo
- Department of Chemical Engineering; Feng Chia University; Taichung Taiwan 407
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41
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Kumar A, Ahmed QN. A Benzoquinone Imine Assisted Ring-Opening/Ring-Closing Strategy of the RCOCHN1
N2
System: Dinitrogen Extrusion Reaction to Benzimidazoles. European J Org Chem 2017. [DOI: 10.1002/ejoc.201700357] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Atul Kumar
- Medicinal Chemistry Division; Indian Institute of Integrative Medicine (IIIM); Canal Road 180001 Jammu Jammu & Kashmir India
- Academy of Scientific and Innovative Research (AcSIR); Indian Institute of Integrative Medicine (IIIM); Canal Road 180001 Jammu Jammu & Kashmir India
| | - Qazi Naveed Ahmed
- Medicinal Chemistry Division; Indian Institute of Integrative Medicine (IIIM); Canal Road 180001 Jammu Jammu & Kashmir India
- Academy of Scientific and Innovative Research (AcSIR); Indian Institute of Integrative Medicine (IIIM); Canal Road 180001 Jammu Jammu & Kashmir India
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42
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Wang Y, Wu Y, Li Y, Tang Y. Denitrogenative Suzuki and carbonylative Suzuki coupling reactions of benzotriazoles with boronic acids. Chem Sci 2017; 8:3852-3857. [PMID: 28966777 PMCID: PMC5578364 DOI: 10.1039/c7sc00367f] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2017] [Accepted: 03/10/2017] [Indexed: 11/21/2022] Open
Abstract
Unprecedented palladium-catalyzed denitrogenative Suzuki and carbonylative Suzuki coupling reactions of benzotriazoles with boronic acids have been realized, which afforded structurally diverse ortho-amino-substituted biaryl and biaryl ketone derivatives. The key to this success is due to the development of a rationally designed strategy to achieve the ring opening of benzotriazoles with a synergistic activating-stabilizing effect, which enables the in situ generation of the corresponding ortho-amino-arenediazonium species. The present work opens up a new avenue to utilize benzotriazoles as synthetic equivalents of ortho-amino-arenediazoniums, which otherwise could not be directly accessed by existing synthetic methods.
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Affiliation(s)
- Yuanhao Wang
- School of Pharmaceutical Sciences , Tsinghua University , Beijing 100084 , China .
| | - Yunfei Wu
- Collaborative Innovation Center for Biotherapy , State Key Laboratory of Biotherapy and Cancer Center , West China Medical School , Sichuan University , Chengdu 610041 , China
| | - Yuanhe Li
- School of Pharmaceutical Sciences , Tsinghua University , Beijing 100084 , China .
| | - Yefeng Tang
- School of Pharmaceutical Sciences , Tsinghua University , Beijing 100084 , China .
- Collaborative Innovation Center for Biotherapy , State Key Laboratory of Biotherapy and Cancer Center , West China Medical School , Sichuan University , Chengdu 610041 , China
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43
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Siva Reddy A, Leela Siva Kumari A, Swamy KK. Palladium-catalyzed regioselective synthesis of benzosultams from functionalized ynamides and benzotriazoles/tetrazoles. Tetrahedron 2017. [DOI: 10.1016/j.tet.2017.03.070] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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44
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Rehan M, Nallagonda R, Das BG, Meena T, Ghorai P. Synthesis of Functionalized Benzo[b]furans via Oxidative Cyclization of o-Cinnamyl Phenols. J Org Chem 2017; 82:3411-3424. [PMID: 28249386 DOI: 10.1021/acs.joc.6b02752] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Disclosed herein is an efficient synthetic route for the synthesis of functionalized 2-benzyl benzo[b]furans via a regioselective 5-exo-trig intramolecular oxidative cyclization of ortho-cinnamyl phenols using [PdCl2(CH3CN)2] as catalyst and benzoquinone as an oxidant. Further, a sequential ortho-cinnamylation of phenols using cinnamyl alcohols catalyzed by Re2O7, followed by an oxidative cyclization using the above Pd catalyst, is performed. The reaction showed broad substrate scope with good to excellent yields.
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Affiliation(s)
- Mohammad Rehan
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Rajender Nallagonda
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Braja Gopal Das
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Tannu Meena
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
| | - Prasanta Ghorai
- Department of Chemistry, Indian Institute of Science Education and Research Bhopal , Bhauri, Bhopal-462066, India
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45
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Shahcheragh SM, Habibi A, Khosravi S. Straightforward synthesis of novel substituted 1,3,4-thiadiazole derivatives in choline chloride-based deep eutectic solvent. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.01.057] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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46
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Wang Y, Li Y, Fan Y, Wang Z, Tang Y. Palladium-catalyzed denitrogenative functionalizations of benzotriazoles with alkenes and 1,3-dienes. Chem Commun (Camb) 2017; 53:11873-11876. [DOI: 10.1039/c7cc07543j] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Pd-Catalyzed denitrogenative functionalizations of benzotriazoles with alkenes and 1,3-dienes have been developed, which enable the rapid access of diverse ortho-amino styrenes and 2-vinylindolines, respectively.
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Affiliation(s)
- Yuanhao Wang
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center
- Tsinghua University
- Beijing 100084
- China
| | - Yuanhe Li
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
- Beijing National Laboratory for Molecular Science
- College of Chemistry and Molecular Engineering
- Peking University
- Beijing 100871
| | - Yijun Fan
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center
- Tsinghua University
- Beijing 100084
- China
| | - Zhiguo Wang
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center
- Tsinghua University
- Beijing 100084
- China
| | - Yefeng Tang
- School of Pharmaceutical Sciences & Comprehensive AIDS Research Center
- Tsinghua University
- Beijing 100084
- China
- Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education
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47
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Hu Q, Li L, Yin F, Zhang H, Hu Y, Liu B, Hu Y. Fused multifunctionalized isoindole-1,3-diones via the coupled oxidation of imidazoles and tetraynes. RSC Adv 2017. [DOI: 10.1039/c7ra08817e] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
The facile synthesis of fused multifunctionalized isoindole-1,3-diones by a hexadehydro-Diels–Alder domino reaction of various substituted tetraynes and imidazole derivatives is reported.
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Affiliation(s)
- Qiong Hu
- Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Molecular-Based Materials
- School of Chemistry and Materials Science
- Anhui Normal University
| | - Lidong Li
- Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Molecular-Based Materials
- School of Chemistry and Materials Science
- Anhui Normal University
| | - Fei Yin
- Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Molecular-Based Materials
- School of Chemistry and Materials Science
- Anhui Normal University
| | - Hao Zhang
- Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Molecular-Based Materials
- School of Chemistry and Materials Science
- Anhui Normal University
| | - Yadong Hu
- Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Molecular-Based Materials
- School of Chemistry and Materials Science
- Anhui Normal University
| | - Baohua Liu
- Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Molecular-Based Materials
- School of Chemistry and Materials Science
- Anhui Normal University
| | - Yimin Hu
- Laboratory of Functional Molecular Solids
- Ministry of Education
- Anhui Key Laboratory of Molecular-Based Materials
- School of Chemistry and Materials Science
- Anhui Normal University
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48
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Santa María D, Claramunt RM, Torralba MC, Torres MR, Alkorta I, Elguero J. The structure and properties of 5,6-dinitro-1H-benzotriazole. J Mol Struct 2016. [DOI: 10.1016/j.molstruc.2016.02.020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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49
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Machara A, Konvalinka J, Kotora M. A MODULAR SYNTHESIS OFN-BENZOTRIAZOLE UREAS USING ALKYLATION OF 5-NITROBENZOTRIAZOLE. ChemistrySelect 2016. [DOI: 10.1002/slct.201600025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Aleš Machara
- Department of Organic Chemistry, Faculty of Science; Charles University in Prague, Hlavova 8; 128 43 Prague 2 Czech Republic
| | - Jan Konvalinka
- Department of Biochemistry, Faculty of Science; Charles University in Prague; Hlavova 8 128 43 Prague 2
- Institute of Organic Chemistry and Biochemistry; Academy of Sciences of the Czech Republic; Flemingovo n.2 166 10 Prague 6 Czech Republic
| | - Martin Kotora
- Department of Organic Chemistry, Faculty of Science; Charles University in Prague, Hlavova 8; 128 43 Prague 2 Czech Republic
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