1
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Ho KT, Pierce JG. Synthesis of Spiropyrrolines via One-Pot Tf 2O-Mediated Amide Activation/Formal [3 + 2]-Cycloaddition of α-Formylamino Ketones. J Org Chem 2024; 89:13031-13037. [PMID: 39230008 DOI: 10.1021/acs.joc.4c01128] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/05/2024]
Abstract
An efficient method for the synthesis of spiropyrrolines from readily accessible α-formylamino ketones is reported. The method involves amide activation using Tf2O, followed by a formal [3 + 2]-cycloaddition of the resulting enolic nitrilium intermediate with Michael acceptors, ultimately affording spiropyrrolines. Mechanistic insights were gained through NMR studies, elucidating the precise role of the base additive and suggesting the formation of an enolic nitrilium intermediate.
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Affiliation(s)
- Khanh-Toan Ho
- Department of Chemistry and Integrative Sciences Initiative, NC State University, Raleigh, North Carolina 27695, United States
| | - Joshua G Pierce
- Department of Chemistry and Integrative Sciences Initiative, NC State University, Raleigh, North Carolina 27695, United States
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2
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Permingeat Squizatto C, Bianchini MA, Delpiccolo CML. Synthesis of 2,3-Dihydropyrroles by Rhodium(II)-Catalyzed Transannulation of N-Sulfonyl-1,2,3-triazoles: Diversity Generation by One-Pot Methodologies. J Org Chem 2023; 88:16091-16103. [PMID: 37910436 DOI: 10.1021/acs.joc.3c01337] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/03/2023]
Abstract
A versatile one-pot strategy for the generation of compounds of synthetic interest has been presented, promoting the development of practical processes. First, the transannulation of N-sulfonyltriazoles through alkenes and rhodium catalysis was described, giving 2,3-dihydropyrroles in 13-76% yield. As contributions of the strategy, the evaluation of alkenes with different properties, and the use of only drops of solvent (0.40 M) was highlighted. In addition, we described a methodology for the modulation of the N-sulfonyltriazoles, to obtain selectively cyclopropyl tosylimines or 2,3-dihydropyrroles. For the latter products, neat conditions were also included. Finally, the potential of the methodology was demonstrated by the synthesis of six structurally different analogues starting from the same substrates and late-stage transformation of bioactive molecules. These compounds were generated in 38-63% yield, after two or more conversion steps carried out in the same reaction vessel.
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Affiliation(s)
- Caterina Permingeat Squizatto
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, Rosario S2002LRK, Argentina
| | - Maira A Bianchini
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, Rosario S2002LRK, Argentina
| | - Carina M L Delpiccolo
- Instituto de Química Rosario, Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario-CONICET, Suipacha 531, Rosario S2002LRK, Argentina
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3
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Nutt MJ, Annear JW, Jones KD, Flematti GR, Moggach SA, Stewart SG. Dirhodium-Catalyzed Transannulation of N-Sulfonyl-1,2,3-triazoles to 2,3-Dehydropiperazines. J Org Chem 2023; 88:11968-11979. [PMID: 37523269 DOI: 10.1021/acs.joc.3c01259] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/02/2023]
Abstract
The dirhodium(II)-catalyzed synthesis of a range of C2-substituted 2,3-dehydropiperazines using 1-mesyl-1,2,3-triazoles and β-haloalkylcarbamates is reported. The reaction is proposed to proceed through an α-imino rhodium carbene 1,3-insertion into N-H followed by a base-mediated cyclization. C-Substituted dehydropiperazines can also be conducted directly from terminal alkynes in a three-step, one-pot operation, forming the triazole in situ. This methodology has also been expanded to afford several 2,5-disubstituted 2,3-dehydropiperazines as well as a larger 4,5,6,7-tetrahydro-1H-1,4-diazepine derivative.
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Affiliation(s)
- Michael J Nutt
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Jack W Annear
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Kieran D Jones
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Gavin R Flematti
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Stephen A Moggach
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Scott G Stewart
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
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4
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Takeda A, Oka M, Iida H. Atom-Economical Syntheses of Dihydropyrroles Using Flavin-Iodine-Catalyzed Aerobic Multistep and Multicomponent Reactions. J Org Chem 2023. [PMID: 37183405 DOI: 10.1021/acs.joc.3c00444] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/16/2023]
Abstract
Herein, we report facile, atom-economical syntheses of multisubstituted 2,3-dihydropyrroles using flavin-iodine-catalyzed aerobic oxidative multistep transformations of chalcones with β-enamine ketones or 1,3-dicarbonyl compounds and amines. Exploiting coupled flavin-iodine catalysis, the multistep reaction, including C-C and C-N bond formation, is promoted only by the consumption of O2 (1 atm), thus allowing aerobic oxidative synthesis that generates green H2O as the only waste.
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Affiliation(s)
- Aki Takeda
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Marina Oka
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
| | - Hiroki Iida
- Department of Chemistry, Graduate School of Natural Science and Technology, Shimane University, 1060 Nishikawatsu, Matsue 690-8504, Japan
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5
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Park JU, Huang LZ, Cho HJ, Park BY, Kim JH. One-Pot Synthesis of Unprotected 2-Acylpyrroles from 1,2,3 -Triazoles and 2-Hydroxymethylallyl Carbonates. J Org Chem 2023; 88:585-593. [PMID: 36538655 DOI: 10.1021/acs.joc.2c02602] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Abstract
An efficient, tandem one-pot approach to synthesize multisubstituted 2-acylpyrroles from readily prepared N-tosyl triazoles and 2-hydroxymethylallyl carbonates is reported. The reaction proceeds via Rh(II)-catalyzed O-H insertion, [3,3]-sigmatropic rearrangement, Pd(0)-catalyzed oxidative addition, intramolecular cyclization, DBU-promoted E1cB elimination, double bond isomerization, and aromatization, enabling the disconnection and formation of multiple bonds in one reactor. The approach represents a highly regioselective way to access di-, tri-, and tetra-substituted NH pyrroles with high efficiency.
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Affiliation(s)
- Jong-Un Park
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, Korea
| | - Liang-Zhu Huang
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, Korea.,College of Chemistry and Chemical Engineering, Yan'an University, Yan'an, Shaanxi 716000, PR China
| | - Ho-Jun Cho
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, Korea
| | - Boyoung Y Park
- College of Pharmacy, Kyung Hee University, Dongdaemun-gu, Seoul 02447, Korea
| | - Ju Hyun Kim
- Department of Chemistry (BK21 Four), Research Institute of Natural Science, Gyeongsang National University, Jinju 52828, Korea
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6
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Williams M, Boyer A. Modular Synthesis of Highly Substituted 3-Azapyrroles by Rh(II)-Catalyzed N-H Bond Insertion and Cyclodehydration. J Org Chem 2022; 87:16139-16156. [PMID: 35503987 PMCID: PMC9764362 DOI: 10.1021/acs.joc.2c00434] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
A modular synthesis of highly substituted 3-azapyrroles has been developed using a three-step sequence comprising copper-catalyzed alkyne-azide cycloaddition (CuAAC), N-H bond insertion, and cyclodehydration. 1-Sulfonyl-1,2,3-triazoles (1-STs) can be accessed from common alkyne and sulfonyl azide building blocks by CuAAC using CuTC. Rhodium(II)-acetate-promoted 1-ST denitrogenation results in highly electrophilic rhodium azavinyl carbenes that, here, underwent insertion into the N-H bond of secondary α-aminoketones to form 1,2-aminoalkenes. These products were cyclized and dehydrated using BF3·OEt2 into highly substituted 3-azapyrroles. The three steps (CuAAC, N-H bond insertion, and cyclodehydration) could be telescoped into a one-pot process. The method proved to be highly efficient and tolerated a wide range of substituents.
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7
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Ilkin VG, Beryozkina TV, Willocx D, Silaichev PS, Veettil SP, Dehaen W, Bakulev VA. Rhodium-Catalyzed Transannulation of 4,5-Fused 1-Sulfonyl-1,2,3-triazoles with Nitriles. The Selective Formation of 1-Sulfonyl-4,5-fused Imidazoles versus Secondary C-H Bond Migration. J Org Chem 2022; 87:12274-12286. [PMID: 36049015 DOI: 10.1021/acs.joc.2c01456] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The reactivity of readily available 4,5-fused-1-sulfonyl-1,2,3-triazoles was examined in the Rh(II)-catalyzed transannulation reaction with nitriles. We have come across the interesting observation that 1-sulfonyl cycloalkeno[d][1,2,3]triazoles that possess β-hydrogens resist intramolecular β-hydride migration and could serve as a new source of Rh-iminocarbenoids for intermolecular Rh(II)-catalyzed transannulation reactions. As a result, 1-sulfonyl cyclohexeno-, cyclohepteno-, dihydropyrano-, 5-phenyltetrahydrobenzo-, and 4,5-dihydronaphtho[d]imidazoles were synthesized from various nitriles in good yields. A one-pot methodology has also been executed for the synthesis of NH-imidazoles.
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Affiliation(s)
- Vladimir G Ilkin
- Technology for Organic Synthesis Department, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia.,Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Tetyana V Beryozkina
- Technology for Organic Synthesis Department, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia
| | - Daan Willocx
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Pavel S Silaichev
- Technology for Organic Synthesis Department, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia.,Department of Chemistry, Perm State University, 15 Bukireva Street, Perm 614990, Russia
| | - Santhini Pulikkal Veettil
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Wim Dehaen
- Molecular Design and Synthesis, Department of Chemistry, KU Leuven, Celestijnenlaan 200F, Leuven B-3001, Belgium
| | - Vasiliy A Bakulev
- Technology for Organic Synthesis Department, Ural Federal University, 19 Mira Street, Yekaterinburg 620002, Russia
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8
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Kaieda Y, Yamamoto K, Kuriyama M, Onomura O. Rhodium‐Catalyzed Transannulation of <i>N</i>‐Sulfonyl‐1,2,3‐triazoles with Carboxylic Esters. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200544] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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9
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Akter M, Rupa K, Anbarasan P. 1,2,3-Triazole and Its Analogues: New Surrogates for Diazo Compounds. Chem Rev 2022; 122:13108-13205. [DOI: 10.1021/acs.chemrev.1c00991] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Monalisa Akter
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Kavuri Rupa
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai 600 036, India
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10
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Wang Y, Zhu L, Chen W, Zhou Z, Zhang Z, Hadjichristidis N. Bimetallic Cu(I)/Rh(II) Relay Catalysis for Multicomponent Polymerization through Carbene Intermediates. Macromolecules 2022. [DOI: 10.1021/acs.macromol.1c02130] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Ying Wang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Linlin Zhu
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Wenhao Chen
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Zhi Zhou
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China
| | - Zhen Zhang
- School of Chemical Engineering and Light Industry, Guangdong University of Technology, Guangzhou 510006, P. R. China
- Key Laboratory of Polymer Processing Engineering (South China University of Technology), Ministry of Education, Guangzhou 510641, P. R. China
| | - Nikos Hadjichristidis
- Physical Sciences and Engineering Division, KAUST Catalysis Center, Polymer Synthesis Laboratory, King Abdullah University of Science and Technology (KAUST), Thuwal 23955, Saudi Arabia
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11
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Xu H, Kong X, Cen M, Xu ZF, Duan S, Li CY. Synthesis of dihydropyrroles from in situ-generated zwitterions via Rh 2(adc) 4/TBAI dual catalysis. Chem Commun (Camb) 2022; 58:12244-12247. [DOI: 10.1039/d2cc04674a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A convenient rhodium/iodide dual catalysis strategy for the regioselective synthesis of dihydropyrroles was established.
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Affiliation(s)
- Huaping Xu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou, 310018, China
- School of Materials Science and Engineering, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou, 310018, China
| | - Xiaoyu Kong
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou, 310018, China
| | - Mengjie Cen
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou, 310018, China
| | - Ze-Feng Xu
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou, 310018, China
| | - Shengguo Duan
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou, 310018, China
| | - Chuan-Ying Li
- Department of Chemistry, Key Laboratory of Surface & Interface Science of Polymer Materials of Zhejiang Province, Zhejiang Sci-Tech University, Xiasha West Higher Education District, Hangzhou, 310018, China
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12
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Ji J, Guan C, Wei Q, Chen X, Zhao Y, Liu S. Base-Induced Highly Regioselective Synthesis of N2-Substituted 1,2,3-Triazoles under Mild Conditions in Air. Org Lett 2021; 24:132-136. [PMID: 34928620 DOI: 10.1021/acs.orglett.1c03743] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
We developed a highly regioselective base-induced synthesis of N2-substituted 1,2,3-triazoles from N-sulfonyl-1,2,3-triazoles and alkyl bromides/alkyl iodides at room temperature. We propose an SN2-like mechanistic pathway to explain the high N2-regioselectivity. The protocol features a broad substrate scope and generates products in good to excellent yields (72-90%).
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Affiliation(s)
- Jian Ji
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Cong Guan
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Qinghua Wei
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Xuwen Chen
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Yun Zhao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
| | - Shunying Liu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, Shanghai, 200062, China
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13
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Luo H, Li Y, Du L, Xin X, Wang T, Han J, Tian Y, Li B. Divergent Synthesis of Highly Substituted Pyridines and Benzenes from Dienals, Alkynes, and Sulfonyl Azides. Org Lett 2021; 23:7883-7887. [PMID: 34590870 DOI: 10.1021/acs.orglett.1c02900] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Divergent synthesis is extremely important for the highly efficient preparation of structurally diverse target molecules. Herein, we describe a multicomponent cascade reaction, which allows access to highly substituted pyridines and benzenes by combining four individual steps in a one-pot manner from the same set of readily available starting materials. The azepine intermediates were first used as the precursors for 6π-electrocyclization to construct highly substituted pyridines and benzenes in a tunable manner.
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Affiliation(s)
- Han Luo
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400044, China
| | - You Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400044, China
| | - Luan Du
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400044, China
| | - Xiaolan Xin
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400044, China
| | - Tao Wang
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400044, China
| | - Jingpeng Han
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400044, China
| | - Yi Tian
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400044, China
| | - Baosheng Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing, 400044, China
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14
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Yadagiri D, Anbarasan P. Catalytic Functionalization of Metallocarbenes Derived from α-Diazocarbonyl Compounds and Their Precursors. CHEM REC 2021; 21:3872-3883. [PMID: 34448345 DOI: 10.1002/tcr.202100167] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2021] [Revised: 08/14/2021] [Indexed: 11/12/2022]
Abstract
Short and efficient synthesis of heterocyclic compounds are highly desirable in synthetic organic chemistry. It is a dream approach to accomplish these syntheses from readily available starting materials in a single step. In this personal account, we discuss our contribution in the synthesis of heterocyclic compounds and beyond from N-sulfonyl-1,2,3-triazoles and α-diazocarbonyl compounds, which are the precursors for α-imino (carbonyl) metal carbenes in the presence of transition metal catalysts. Functionalization of α-imino(carbonyl) metal carbenes has been achieved through in-situ generated metal-stabilized ylides followed by either intramolecular trapping by non-polar bonds, rearrangement, cycloaddition, or 1,3-insertion fashion, which led to the efficient synthesis of various synthetically important intermediates and heterocyclic compounds.
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Affiliation(s)
- Dongari Yadagiri
- Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247667, India
| | - Pazhamalai Anbarasan
- Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India
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15
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Li Y, Luo H, Tang Z, Li Y, Du L, Xin X, Li S, Li B. Copper and Rhodium Relay Catalysis for Selective Access to cis-2,3-Dihydroazepines. Org Lett 2021; 23:6450-6454. [PMID: 34351171 DOI: 10.1021/acs.orglett.1c02262] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A new catalytic protocol to access synthetically challenging cis-2,3-dihydroazepines is reported. The reaction starts with readily available dienals, alkynes, and sulfonyl azides as the substrates and employs copper and rhodium as relay catalysts. Key steps include a copper-catalyzed reaction between an alkyne and a sulfonyl azide to form a triazole intermediate. The subsequent activation of this triazole intermediate by a rhodium catalyst, followed by a reaction with the dienal substrate, eventually leads to the dihydroazepine product. The regio- and stereochemistries of the products are believed to be controlled through a stereospecific conrotatory 8π-electrocyclization process against a possible competing 6π-electrocyclization process.
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Affiliation(s)
- You Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, China
| | - Han Luo
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, China
| | - Zongyuan Tang
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, China
| | - Yingzi Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, China
| | - Luan Du
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, China
| | - Xiaolan Xin
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, China
| | - Shanshan Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, China
| | - Baosheng Li
- School of Chemistry and Chemical Engineering, Chongqing University, 174 Shazheng Street, Chongqing 400044, China
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16
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Fu R, Kou L, Gao K, Zhou S, Bao X. Understanding Mechanistic Differences between
3‐Diazoindolin‐2‐Imines
and
N
‐Sulfonyl
‐1,2,
3‐Triazoles
in the Rh
2
(
II
)‐Catalyzed Reactions with Nitrosoarenes. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100033] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Rui Fu
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren‐Ai Road, Suzhou Industrial Park Suzhou Jiangsu 215123 China
| | - Luyao Kou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren‐Ai Road, Suzhou Industrial Park Suzhou Jiangsu 215123 China
| | - Ke Gao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren‐Ai Road, Suzhou Industrial Park Suzhou Jiangsu 215123 China
| | - Shaofang Zhou
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren‐Ai Road, Suzhou Industrial Park Suzhou Jiangsu 215123 China
| | - Xiaoguang Bao
- College of Chemistry, Chemical Engineering and Materials Science, Soochow University 199 Ren‐Ai Road, Suzhou Industrial Park Suzhou Jiangsu 215123 China
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17
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Wu Q, Dong Z, Xu J, Yang Z. Sulfur-controlled and rhodium-catalyzed formal (3 + 3) transannulation of thioacyl carbenes with alk-2-enals and mechanistic insights. Org Biomol Chem 2021; 19:3173-3180. [PMID: 33885571 DOI: 10.1039/d1ob00116g] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A rhodium-catalyzed denitrogenative formal (3 + 3) transannulation of 1,2,3-thiadiazoles with alk-2-enals is achieved, producing 2,3-dihydrothiopyran-4-ones in moderate to excellent yields. An inverse KIE of 0.49 is obtained, suggesting the reversibility of the oxidative addition of thioacyl Rh(i) carbenes to alk-2-enals. The late-stage structural modifications of steroid compounds are realized. Moreover, our studies show that thioacyl carbenes have different reactivities to those of α-oxo and α-imino carbenes, and highlight the importance of heteroatoms in deciding the reactivities of heterovinyl carbenes.
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Affiliation(s)
- Qiuyue Wu
- Department of Organic Chemistry, College of Chemistry, Beijing University of Chemical Technology, Beijing 100029, P. R. China.
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18
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Liu Z, Chen L, Zhu D, Zhu S. Formal Allylation and Enantioselective Cyclopropanation of Donor/Acceptor Rhodium(II) Azavinyl Carbenes. Org Lett 2021; 23:1275-1279. [PMID: 33534583 DOI: 10.1021/acs.orglett.0c04251] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
A highly efficient formal allylation of dihydronaphthotriazoles with alkenes under rhodium(II) catalysis is reported. Various allyl dihydronaphthalene derivatives were furnished via rhodium(II) azavinyl carbenes with moderate to good yields and excellent chemoselectivity. When monosubstituted alkenes are used, cyclopropanation occurs and good to excellent enantioselectivities have been achieved. Particularly noteworthy is the allylic C(sp2)-H activation instead of traditional C(sp3)-H activation in the formal allylation process.
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Affiliation(s)
- Zhili Liu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Lianfen Chen
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Dong Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China
| | - Shifa Zhu
- Key Laboratory of Functional Molecular Engineering of Guangdong Province, School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, P. R. China.,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin 300071, P. R. China
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19
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Zhou T, He X, Zuo Y, Wu Y, Hu W, Zhang S, Duan J, Shang Y. Rh‐Catalyzed
Formal [3+2] Cyclization for the Synthesis of
5‐Aryl
‐2‐(quinolin‐2‐yl)oxazoles and Its Applications in Metal Ions Probes. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202000454] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Tongtong Zhou
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu Anhui 241002 China
| | - Xinwei He
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu Anhui 241002 China
| | - Youpeng Zuo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu Anhui 241002 China
| | - Yuhao Wu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu Anhui 241002 China
| | - Wangcheng Hu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu Anhui 241002 China
| | - Shiwen Zhang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu Anhui 241002 China
| | - Jiahui Duan
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu Anhui 241002 China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule‐Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University Wuhu Anhui 241002 China
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20
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Zhong Y, Zhao X, Zhao X, Zhang D, Li W, Wei S, Liu F, Yu J, Li G, Wang D. Multi-component syntheses of 2-pyrrolines and organocatalytic asymmetric syntheses of functionalized chiral 2-pyrrolines. Org Chem Front 2021. [DOI: 10.1039/d0qo01267j] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The atom-economical synthesis of 2-pyrrolines has been achieved by carrying out the multi-component tandem [2 + 2 + 1] annulation of commercially available starting materials, namely, an aldehyde, glycine ester hydrochloride, and benzoylacetonitrile.
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Affiliation(s)
- Yuan Zhong
- Gansu Provincial Key Laboratory of Aridland Crop Science
- Gansu Agricultural University
- Lanzhou 730070
- China
| | - Xiaoqiang Zhao
- Gansu Provincial Key Laboratory of Aridland Crop Science
- Gansu Agricultural University
- Lanzhou 730070
- China
| | - Xiaoyun Zhao
- College Journal Editorial Department
- Gansu Agricultural University
- Lanzhou 730070
- China
| | - Dan Zhang
- Instrumental Analysis Center
- Gansu Agricultural University
- Lanzhou 730070
- China
| | - Wenli Li
- Instrumental Analysis Center
- Gansu Agricultural University
- Lanzhou 730070
- China
| | - Shouhui Wei
- Gansu Provincial Key Laboratory of Aridland Crop Science
- Gansu Agricultural University
- Lanzhou 730070
- China
| | - Fanhong Liu
- Gansu Provincial Key Laboratory of Aridland Crop Science
- Gansu Agricultural University
- Lanzhou 730070
- China
| | - Jihua Yu
- Gansu Provincial Key Laboratory of Aridland Crop Science
- Gansu Agricultural University
- Lanzhou 730070
- China
| | - Guichen Li
- Instrumental Analysis Center
- Gansu Agricultural University
- Lanzhou 730070
- China
| | - Dandan Wang
- College Journal Editorial Department
- Gansu Agricultural University
- Lanzhou 730070
- China
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21
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Xu H, Zhang Z, Weng MY, Chen H. Liquid-Assisted Mechanosynthesis of trans-2,3-Dihydropyrroles from Chalcones and Enaminones. HETEROCYCLES 2021. [DOI: 10.3987/com-20-14365] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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22
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Zhang Z, Gevorgyan V. Co-Catalyzed Transannulation of Pyridotriazoles with Isothiocyanates and Xanthate Esters. Org Lett 2020; 22:8500-8504. [PMID: 33044833 PMCID: PMC7655727 DOI: 10.1021/acs.orglett.0c03099] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An efficient radical transannulation reaction of pyridotriazoles with isothiocyanates and xanthate esters was developed. This method features conversion of pyridotriazoles into two N-fused heterocyclic aromatic systems-imino-thiazolopyridines and oxo-thiazolopyridine derivatives-via one-step Co(II)-catalyzed transannulation reaction proceeding via a radical mechanism. The synthetic usefulness of the developed method was illustrated in the synthesis of amino acid derivatives and further transformations of obtained reaction products.
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Affiliation(s)
- Ziyan Zhang
- Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
| | - Vladimir Gevorgyan
- Department of Chemistry and Biochemistry, University of Texas at Dallas, 800 W. Campbell Road, Richardson, Texas 75080, United States
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23
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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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24
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He X, Wu Y, Zhou T, Zuo Y, Xie M, Li R, Duan J, Shang Y. Rh-catalyzed C–N coupling of N-sulfonyl-1,2,3-trizales with secondary amines for regioselective synthesis of phenylvinyl-1,2-diamines. SYNTHETIC COMMUN 2020. [DOI: 10.1080/00397911.2020.1781185] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Xinwei He
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China
| | - Yuhao Wu
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China
| | - Tongtong Zhou
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China
| | - Youpeng Zuo
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China
| | - Mengqing Xie
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China
| | - Ruxue Li
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China
| | - Jiahui Duan
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China
| | - Yongjia Shang
- Key Laboratory of Functional Molecular Solids, Ministry of Education, Anhui Laboratory of Molecule-Based Materials (State Key Laboratory Cultivation Base), College of Chemistry and Materials Science, Anhui Normal University, Wuhu, P. R. China
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25
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Li J, Zhu SR, Xu Y, Lu XC, Wang ZB, Liu L, Xu DF. Synthesis of 2,5-diaryloxazoles through rhodium-catalyzed annulation of triazoles and aldehydes. RSC Adv 2020; 10:24795-24799. [PMID: 35517461 PMCID: PMC9055139 DOI: 10.1039/d0ra03966g] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2020] [Accepted: 06/11/2020] [Indexed: 02/01/2023] Open
Abstract
An efficient synthesis of a variety of 2,5-diaryloxazole derivatives via a rhodium-catalyzed annulation of triazoles and aldehydes is achieved. Various oxazole derivatives could be obtained in good to excellent yields. A concise synthesis of antimycobaterial natural products balsoxin and texamine has been achieved using this method.
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Affiliation(s)
- Jian Li
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmaceutical Engineering & Life Sciences, Changzhou University Changzhou 213164 China
| | - Shang-Rong Zhu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmaceutical Engineering & Life Sciences, Changzhou University Changzhou 213164 China
| | - Yue Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmaceutical Engineering & Life Sciences, Changzhou University Changzhou 213164 China
| | - Xue-Chen Lu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmaceutical Engineering & Life Sciences, Changzhou University Changzhou 213164 China
| | - Zheng-Bing Wang
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmaceutical Engineering & Life Sciences, Changzhou University Changzhou 213164 China
| | - Li Liu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmaceutical Engineering & Life Sciences, Changzhou University Changzhou 213164 China
| | - De-Feng Xu
- Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology, School of Pharmaceutical Engineering & Life Sciences, Changzhou University Changzhou 213164 China
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26
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Neto JSS, Zeni G. Transition Metal‐Catalyzed and Metal‐Free Cyclization Reactions of Alkynes with Nitrogen‐Containing Substrates: Synthesis of Pyrrole Derivatives. ChemCatChem 2020. [DOI: 10.1002/cctc.201902325] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Jose S. S. Neto
- Departamento de QuímicaUniversidade Federal de Santa Catarina Florianópolis Santa Catarina 88040-900 Brazil
| | - Gilson Zeni
- Department of Biochemistry and Molecular Biology Laboratório de Síntese Reatividade Avaliação Farmacológica e Toxicológica de Organocalcogênios, CCNEUniversidade Federal de Santa Maria Santa Maria Rio Grande do Sul 97105-900 Brazil
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27
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Hong FL, Chen YB, Ye SH, Zhu GY, Zhu XQ, Lu X, Liu RS, Ye LW. Copper-Catalyzed Asymmetric Reaction of Alkenyl Diynes with Styrenes by Formal [3 + 2] Cycloaddition via Cu-Containing All-Carbon 1,3-Dipoles: Access to Chiral Pyrrole-Fused Bridged [2.2.1] Skeletons. J Am Chem Soc 2020; 142:7618-7626. [PMID: 32237743 DOI: 10.1021/jacs.0c01918] [Citation(s) in RCA: 53] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
The generation of metal-containing 1,3-dipoles from metal carbenes represents a significant advance in 1,3-dipolar cycloaddition reactions. However, these transformations have so far been limited to reactions based on diazo compounds or triazoles as precursors. Herein, we disclose a copper-catalyzed enantioselective reaction of alkenyl N-propargyl ynamides with styrene derivatives by formal [3 + 2] cycloaddition via Cu-containing all-carbon 1,3-dipoles, which constitutes a novel way for the generation of metal-containing 1,3-dipoles via metal carbenes. This protocol allows the practical and atom-economical synthesis of valuable chiral pyrrole-fused bridged [2.2.1] skeletons in moderate to good yields (up to 90% yield) with excellent diastereoselectivities (dr > 50/1) and generally excellent enantioselectivities (up to >99% ee).
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Affiliation(s)
- Feng-Lin Hong
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Yang-Bo Chen
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Si-Han Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Guang-Yu Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xin-Qi Zhu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Xin Lu
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China
| | - Rai-Shung Liu
- Department of Chemistry, National Tsing-Hua University, Hsinchu, Taiwan 30013, Republic of China
| | - Long-Wu Ye
- State Key Laboratory of Physical Chemistry of Solid Surfaces, Key Laboratory of Chemical Biology of Fujian Province, and College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361005, People's Republic of China.,State Key Laboratory of Organometallic Chemistry, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, Shanghai 200032, People's Republic of China
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28
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Jones KD, Nutt MJ, Comninos E, Sobolev AN, Moggach SA, Miura T, Murakami M, Stewart SG. A One-Pot Reaction of α-Imino Rhodium Carbenoids and Halohydrins: Access to 2,6-Substituted Dihydro-2H-1,4-oxazines. Org Lett 2020; 22:3490-3494. [DOI: 10.1021/acs.orglett.0c00947] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Kieran D. Jones
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Michael J. Nutt
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Elena Comninos
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
| | - Alexandre N. Sobolev
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
- Centre for Microscopy, Characterization and Analysis, The University of Western Australia, Perth, WA 6009, Australia
| | - Stephen A. Moggach
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
- Centre for Microscopy, Characterization and Analysis, The University of Western Australia, Perth, WA 6009, Australia
| | - Tomoya Miura
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Masahiro Murakami
- Department of Synthetic Chemistry and Biological Chemistry, Kyoto University, Katsura, Kyoto, 615-8510, Japan
| | - Scott G. Stewart
- School of Molecular Sciences, The University of Western Australia (M310), 35 Stirling Highway, Crawley, WA 6009, Australia
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29
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Wang Q, May JA. Synthesis of Bridged Azacycles and Propellanes via Nitrene/Alkyne Cascades. Org Lett 2020; 22:3039-3044. [PMID: 32243170 DOI: 10.1021/acs.orglett.0c00798] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
A nitrene/alkyne cascade reaction terminating in C-H bond insertion to form functionalized bridged azacycles from carbonazidates is presented. Due to an initial Huisgen cyclization, all carbonazidates reacted with the alkyne in an exo mode in contrast to the use of sulfamate esters, which react predominately in an endo mode. Substrates with different ring sizes as well as different aryl and heteroaryl groups were also explored. Variation of the nitrene tether showed that 7-membered rings were the maximum ring size to be formed by nitrene attack on the alkyne. Examples incorporating stereocenters on the carbonazidate's tether induced diasteroselectivity in the formation of the bridged ring and two new stereocenters. Additionally, propellanes containing aminals, hemiaminals, and thioaminals formed from the bridged azacycles in the same reaction via an acid-promoted rearrangement.
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Affiliation(s)
- Qinxuan Wang
- Department of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building Room 112, Houston, Texas 77204-5003, United States
| | - Jeremy A May
- Department of Chemistry, University of Houston, 3585 Cullen Boulevard, Fleming Building Room 112, Houston, Texas 77204-5003, United States
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30
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Catalytic Asymmetric Formal [3+2] Cycloaddition of Azoalkenes with 3-Vinylindoles: Synthesis of 2,3-Dihydropyrroles. iScience 2020; 23:100873. [PMID: 32062452 PMCID: PMC7021545 DOI: 10.1016/j.isci.2020.100873] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2019] [Revised: 01/13/2020] [Accepted: 01/27/2020] [Indexed: 12/17/2022] Open
Abstract
Chiral phosphoric acid-catalyzed highly enantioselective formal [3 + 2] cycloaddition reaction of azoalkenes with 3-vinylindoles has been established. Under mild conditions, the projected cycloaddition proceeded smoothly, affording a variety of 2,3-dihydropyrroles in high yields and excellent enantioselectivities, and also in a diastereospecific manner. As opposed to the common 4-atom synthons in the previous literature reports, azoalkenes served as 3-atom synthons. Besides, the observed selectivity was supported by primary theoretical calculation. The unique chemistry of azoalkenes disclosed herein will empower asymmetric synthesis of nitrogen-containing ring structural motifs in a broader context. Chiral phosphoric acid catalyzed formal [3 + 2] cycloaddition reaction 2,3-Dihydropyrroles were enantioselectively synthesized Azoalkenes served as 3-atom synthons
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31
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Wang D, Fan Y, Yu P, Désaubry L. Recent advances in the synthesis of 2,3-dihydropyrroles. Chem Commun (Camb) 2020; 56:5584-5592. [DOI: 10.1039/d0cc02096f] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
This review summarizes the advances in the synthesis of 2,3-dihydropyrroles with an emphasis on recent developments or important seminal contributions.
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Affiliation(s)
- Dong Wang
- Sino-French Joint Lab of Food Nutrition/Safety and Medicinal Chemistry
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
| | - Yu Fan
- Sino-French Joint Lab of Food Nutrition/Safety and Medicinal Chemistry
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
| | - Peng Yu
- Sino-French Joint Lab of Food Nutrition/Safety and Medicinal Chemistry
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
| | - Laurent Désaubry
- Sino-French Joint Lab of Food Nutrition/Safety and Medicinal Chemistry
- China International Science and Technology Cooperation Base of Food Nutrition/Safety and Medicinal Chemistry
- College of Biotechnology
- Tianjin University of Science and Technology
- Tianjin 300457
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32
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Singh M, Paul AK, Singh V. A transition metal-free approach towards the regioselective synthesis of β-carboline tethered pyrroles and 2,3-dihydro-1 H-pyrroles. NEW J CHEM 2020. [DOI: 10.1039/d0nj02315a] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/08/2023]
Abstract
A transition metal-free one-pot sequential approach has been unfolded for the synthesis of β-carboline tethered pyrroles and 2,3-dihydro-1H-pyrroles by using highly diverse 1-formyl-9H-β-carbolines as a template.
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Affiliation(s)
- Manpreet Singh
- Department of Chemistry
- Dr B R Ambedkar National Institute of Technology (NIT)
- Jalandhar
- India
| | - Avijit Kumar Paul
- Department of Chemistry
- National Institute of Technology Kurukshetra
- India
| | - Virender Singh
- Department of Chemistry
- Dr B R Ambedkar National Institute of Technology (NIT)
- Jalandhar
- India
- Department of Chemistry
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33
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Rh(III)-Catalyzed C–H Bond Activation for the Construction of Heterocycles with sp3-Carbon Centers. Catalysts 2019. [DOI: 10.3390/catal9100823] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Rh(III)-catalyzed C–H activation features mild reaction conditions, good functional group tolerance, high reaction efficiency, and regioselectivity. Recently, it has attracted tremendous attention and has been employed to synthesize various heterocycles, such as indoles, isoquinolines, isoquinolones, pyrroles, pyridines, and polyheterocycles, which are important privileged structures in biological molecules, natural products, and agrochemicals. In this short review, we attempt to present an overview of recent advances in Rh(III)-mediated C–H bond activation to generate diverse heterocyclic scaffolds with sp3 carbon centers.
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34
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Zhang Z, Yadagiri D, Gevorgyan V. Light-induced metal-free transformations of unactivated pyridotriazoles. Chem Sci 2019; 10:8399-8404. [PMID: 31803418 PMCID: PMC6844233 DOI: 10.1039/c9sc02448d] [Citation(s) in RCA: 69] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/18/2019] [Accepted: 07/24/2019] [Indexed: 01/01/2023] Open
Abstract
A highly efficient and practical method for incorporation of the arylmethylpyridyl moiety into diverse molecules has been developed. This method features the transition metal-free light-induced room temperature transformation of pyridotriazoles into pyridyl carbenes, which are capable of smooth arylation, X-H insertion, and cyclopropanation reactions. The synthetic usefulness of the developed method was illustrated in a facile synthesis of biologically active molecules.
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Affiliation(s)
- Ziyan Zhang
- Department of Chemistry , University of Illinois at Chicago , 845 W. Taylor St. , Chicago , Illinois 60607 , USA
- Department of Chemistry and Biochemistry , University of Texas at Dallas , 800 W Campbell RD , Richardson , Texas 75080 , USA .
| | - Dongari Yadagiri
- Department of Chemistry , University of Illinois at Chicago , 845 W. Taylor St. , Chicago , Illinois 60607 , USA
- Department of Chemistry and Biochemistry , University of Texas at Dallas , 800 W Campbell RD , Richardson , Texas 75080 , USA .
| | - Vladimir Gevorgyan
- Department of Chemistry , University of Illinois at Chicago , 845 W. Taylor St. , Chicago , Illinois 60607 , USA
- Department of Chemistry and Biochemistry , University of Texas at Dallas , 800 W Campbell RD , Richardson , Texas 75080 , USA .
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35
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Facile one-pot synthesis of novel highly functionalized dihydro-1H-pyrrole derivatives catalyzed by molecular iodine. Tetrahedron Lett 2019. [DOI: 10.1016/j.tetlet.2019.150996] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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36
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Li Z, Wei Q, Song L, Han W, Wu X, Zhao Y, Xia F, Liu S. Highly Regioselective Radical Transformation of N-Sulfonyl-1,2,3-triazoles in Air. Org Lett 2019; 21:6413-6417. [DOI: 10.1021/acs.orglett.9b02269] [Citation(s) in RCA: 18] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Affiliation(s)
- Zi Li
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Qinghua Wei
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Longlong Song
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Wangyujing Han
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Xiang Wu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Yun Zhao
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Fei Xia
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Shunying Liu
- Shanghai Engineering Research Center of Molecular Therapeutics and New Drug Development, School of Chemistry and Molecular Engineering, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
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37
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Ogunlana AA, Zou J, Bao X. Insights into the Mechanisms and Chemoselectivities of Carbamates and Amides in Reactions Involving Rh(II)-Azavinylcarbene: A Computational Study. J Org Chem 2019; 84:8151-8159. [PMID: 31125235 DOI: 10.1021/acs.joc.9b01070] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Abstract
Reactions involving Rh(II)-azavinylcarbenes (Rh(II)-AVCs) to synthesize nitrogen-containing compounds have attracted significant research interest. Despite the importance of these reactions, controlling the chemoselectivities in the reactions involving Rh(II)-AVC remains a challenge. To understand the mechanisms and factors controlling the chemoselectivities between N-H and C═O groups of carbamates and amides in reactions involving Rh(II)-AVC, computational studies were employed. The results reveal that not only the greater nucleophilicity of the N-H group than that of the carbonyl group, but also the presence of H-bonding interactions, could favor the addition of the N-H group of primary carbamates to Rh(II)-AVC. However, for secondary carbamates and amides, they could undergo either chemoselective N-H or C═O addition. Secondary carbamates with less steric hindrance, such as oxazolidinone, prefer the N-H addition mode. However, a switch in chemoselectivity (preference for the C═O addition) was revealed for the sterically hindered secondary carbamates/amides. In addition, a possible O-H addition pathway via the keto-enol tautomerization for isatin and isatoic anhydride was disregarded due to the energetically demanding barrier. Instead, a pathway involving the chemoselective C═O addition, formal [3 + 2] cycloaddition, followed by ring opening was proposed. The origins of the chemoselectivity and the factors responsible were addressed.
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Affiliation(s)
- Abosede Adejoke Ogunlana
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 199 Ren-Ai Road , Suzhou Industrial Park, Suzhou , Jiangsu 215123 , China
| | - Jianping Zou
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 199 Ren-Ai Road , Suzhou Industrial Park, Suzhou , Jiangsu 215123 , China
| | - Xiaoguang Bao
- College of Chemistry, Chemical Engineering and Materials Science , Soochow University , 199 Ren-Ai Road , Suzhou Industrial Park, Suzhou , Jiangsu 215123 , China
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38
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Zhu C, Wei Y, Shi M. Rhodium(II)‐Catalyzed Intramolecular Transannulation of 4‐Methoxycyclohexa‐2,5‐dienone Tethered 1‐Sulfonyl‐1,2,3‐triazoles: Synthesis of Azaspiro[5.5]undecane Derivatives. Adv Synth Catal 2019. [DOI: 10.1002/adsc.201900290] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Cheng‐Zhi Zhu
- Key Laboratory for Advanced Materials and Institute of Fine ChemicalsSchool of Chemistry & Molecular EngineeringEast China University of Science and Technology 130 Mei Long Road Shanghai 200237 China
| | - Yin Wei
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 354 Fenglin Lu Shanghai 200032 China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine ChemicalsSchool of Chemistry & Molecular EngineeringEast China University of Science and Technology 130 Mei Long Road Shanghai 200237 China
- State Key Laboratory of Organometallic ChemistryShanghai Institute of Organic Chemistry, Center for Excellence in Molecular Synthesis, Chinese Academy of Sciences 354 Fenglin Lu Shanghai 200032 China
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Medran NS, La-Venia A, Testero SA. Metal-mediated synthesis of pyrrolines. RSC Adv 2019; 9:6804-6844. [PMID: 35518475 PMCID: PMC9061060 DOI: 10.1039/c8ra10247c] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2018] [Accepted: 02/18/2019] [Indexed: 12/21/2022] Open
Abstract
The five-membered, nitrogen-containing pyrroline ring is a privileged structure. This ring is present in many bioactive compounds from natural sources. Pyrrolines-the dihydro derivatives of pyrroles-have three structural isomer classes, depending on the location of the double bond: 1-pyrrolines (3,4-dihydro-2H-pyrroles), 2-pyrrolines (2,3-dihydro-1H-pyrroles) and 3-pyrrolines (2,5-dihydro-1H-pyrroles). This review aims to describe the latest advances for the synthesis of pyrrolines by transition metal-catalyzed cyclizations. Only reactions in which the pyrroline ring is formed by metal promotion are described. Transformations of the pyrroline ring in other heterocycles, and the structural manipulations of the pyrroline itself are not discussed. The review is organized into three parts, each covering the metal-mediated synthesis of the three pyrroline isomers. Each part is subdivided according to the metal involved, and concludes with a brief description of notable biological activities within the class.
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Affiliation(s)
- Noelia S Medran
- Instituto de Química Rosario - IQUIR (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 Rosario S2002LRK Argentina http://www.iquir-conicet.gov.ar/eng/
| | - Agustina La-Venia
- Instituto de Química Rosario - IQUIR (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 Rosario S2002LRK Argentina http://www.iquir-conicet.gov.ar/eng/
| | - Sebastian A Testero
- Instituto de Química Rosario - IQUIR (CONICET), Facultad de Ciencias Bioquímicas y Farmacéuticas, Universidad Nacional de Rosario Suipacha 531 Rosario S2002LRK Argentina http://www.iquir-conicet.gov.ar/eng/
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40
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Khaidarov AR, Rostovskii NV, Zolotarev AA, Khlebnikov AF, Novikov MS. Synthesis of 1-(2-Aminovinyl)indoles and 1,3′-Biindoles by Reaction of 2,2-Diaryl-Substituted 2H-Azirines with α-Imino Rh(II) Carbenoids. J Org Chem 2019; 84:3743-3753. [DOI: 10.1021/acs.joc.8b03205] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Adel R. Khaidarov
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Nikolai V. Rostovskii
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
| | - Andrey A. Zolotarev
- St. Petersburg State University, Institute of Earth Sciences, 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
| | - Mikhail S. Novikov
- St. Petersburg State University, Institute of Chemistry, 7/9 Universitetskaya nab., St. Petersburg 199034, Russia
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41
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Guđmundsson A, Gustafson KPJ, Mai BK, Hobiger V, Himo F, Bäckvall JE. Diastereoselective Synthesis of N-Protected 2,3-Dihydropyrroles via Iron-Catalyzed Cycloisomerization of α-Allenic Sulfonamides. ACS Catal 2019. [DOI: 10.1021/acscatal.8b05029] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Arnar Guđmundsson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Karl P. J. Gustafson
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Binh Khanh Mai
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Viola Hobiger
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Fahmi Himo
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
| | - Jan-E. Bäckvall
- Department of Organic Chemistry, Arrhenius Laboratory, Stockholm University, SE-106 91 Stockholm, Sweden
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42
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Ge J, Wu X, Bao X. Rhodium(ii)-catalyzed annulation of N-sulfonyl-1,2,3-triazoles with 1,3,5-triazinanes to produce octahydro-1H-purine derivatives: a combined experimental and computational study. Chem Commun (Camb) 2019; 55:6090-6093. [DOI: 10.1039/c9cc02294e] [Citation(s) in RCA: 34] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Rh(ii)-catalyzed annulation of N-sulfonyl-1,2,3-triazoles with 1,3,5-triazinanes leading to the octahydro-1H-purine derivatives with moderate to good yields is described in this communication.
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Affiliation(s)
- Jiemin Ge
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Xueli Wu
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Xiaoguang Bao
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
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43
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Zhu CZ, Wei Y, Shi M. Rhodium(ii)-catalyzed divergent intramolecular tandem cyclization of N- or O-tethered cyclohexa-2,5-dienones with 1-sulfonyl-1,2,3-triazole: synthesis of cyclopropa[cd]indole and benzofuran derivatives. Org Chem Front 2019. [DOI: 10.1039/c9qo00714h] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A novel rhodium(ii)-catalyzed divergent intramolecular tandem cyclization of N- or O-tethered cyclohexa-2,5-dienones and 1-sulfonyl-1,2,3-triazole is disclosed, affording cyclopropa[cd]indole and benzofuran derivatives in moderate to good yields.
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Affiliation(s)
- Cheng-Zhi Zhu
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
| | - Min Shi
- State Key Laboratory of Organometallic Chemistry
- Center for Excellence in Molecular Synthesis
- University of Chinese Academy of Sciences
- Shanghai Institute of Organic Chemistry
- Chinese Academy of Sciences
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44
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Ma X, Liu L, Wang J, Xi X, Xie X, Wang H. Rhodium-Catalyzed Annulation of α-Imino Carbenes with α,β-Unsaturated Ketones: Construction of Multisubstituted 2,3-Dihydropyrrole/pyrrole Rings. J Org Chem 2018; 83:14518-14526. [DOI: 10.1021/acs.joc.8b01835] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Xueji Ma
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Li Liu
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Jiaying Wang
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Xianglin Xi
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Xuemei Xie
- Department of Chemistry and Chemical Engineering, Xinxiang University, Xinxiang 453003, China
| | - Hangxiang Wang
- The First Affiliated Hospital; Key Laboratory of Combined Multi-Organ Transplantation, Ministry of Public Health, Key Laboratory of Organ Transplantation of Zhejiang Province, School of Medicine, Zhejiang University, Hangzhou 310003, China
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45
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Xu H, Liu HW, Chen K, Wang GW. One-Pot Multicomponent Mechanosynthesis of Polysubstituted trans-2,3-Dihydropyrroles and Pyrroles from Amines, Alkyne Esters, and Chalcones. J Org Chem 2018; 83:6035-6049. [PMID: 29745226 DOI: 10.1021/acs.joc.8b00665] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
An efficient and practical one-pot multicomponent reaction of amines with alkyne esters and chalcones promoted by I2/PhI(OAc)2 has been developed under solvent-free ball-milling conditions to afford a variety of polysubstituted trans-2,3-dihydropyrroles in moderate to good yields. The present method features a short reaction time, mild reaction conditions, broad substrate scope, and feasibility of large-scale synthesis. Intriguingly, this protocol can also furnish the corresponding synthetically more attractive pyrroles with the addition of an oxidant in a one-pot way.
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Affiliation(s)
- Hui Xu
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei National Laboratory for Physical Sciences at Microscale, and Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Hong-Wei Liu
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei National Laboratory for Physical Sciences at Microscale, and Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Kuan Chen
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei National Laboratory for Physical Sciences at Microscale, and Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China
| | - Guan-Wu Wang
- CAS Key Laboratory of Soft Matter Chemistry, iChEM (Collaborative Innovation Center of Chemistry for Energy Materials), Hefei National Laboratory for Physical Sciences at Microscale, and Department of Chemistry , University of Science and Technology of China , Hefei , Anhui 230026 , P. R. China.,State Key Laboratory of Applied Organic Chemistry , Lanzhou University , Lanzhou , Gansu 730000 , P. R. China
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46
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Shi X, Chen X, Wang M, Zhang X, Fan X. Regioselective Synthesis of Acylated N-Heterocycles via the Cascade Reactions of Saturated Cyclic Amines with 2-Oxo-2-arylacetic Acids. J Org Chem 2018; 83:6524-6533. [DOI: 10.1021/acs.joc.8b00805] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Xiaonan Shi
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xi Chen
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Muhua Wang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xinying Zhang
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Xuesen Fan
- Henan Key Laboratory of Organic Functional Molecules and Drug Innovation, Collaborative Innovation Center of Henan Province for Green Manufacturing of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions, Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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47
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Xu B, Zhang ZM, Zhou L, Zhang J. Direct Asymmetric Formal [3 + 2] Cycloaddition Reaction of Isocyanoesters with β-Trifluoromethyl β,β-Disubstituted Enones Leading to Optically Active Dihydropyrroles. Org Lett 2018; 20:2716-2719. [DOI: 10.1021/acs.orglett.8b00925] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Bing Xu
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Zhan-Ming Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Lujia Zhou
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
| | - Junliang Zhang
- Shanghai Key Laboratory of Green Chemistry and Chemical Processes, Department of Chemistry, East China Normal University, 3663 North Zhongshan Road, Shanghai 200062, P. R. China
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48
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Zeng JC, Xu H, Huang RL, Yu F, Zhang Z. Facile synthesis of polysubstituted 2,3-dihydropyrroles and pyrroles from Mn(OAc)3-promoted oxidative cyclization of alkenes with amines/alkyne esters or enaminone esters. Tetrahedron Lett 2018. [DOI: 10.1016/j.tetlet.2018.03.025] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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49
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Choi S, Ha S, Park CM. α-Diazo oxime ethers for N-heterocycle synthesis. Chem Commun (Camb) 2018; 53:6054-6064. [PMID: 28516179 DOI: 10.1039/c7cc02650a] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
This Feature Article introduces the preparation and synthetic utility of α-diazo oxime ethers. α-Oximino carbenes are useful synthons for N-heterocycles, and can be easily prepared from α-diazo oxime ethers as precursors. We begin with the preparation of α-diazo oxime ethers and their application in [3+2] cycloaddition. It turns out that the nature of metals bound to carbenes plays a crucial role in modulating the reactivity of α-oximino carbenes, in which copper carbenes smoothly react with enamines, whereas the less reactive enol ethers and nitriles require gold carbenes. In Section 3.2, a discussion on N-O and C-H bond activation is presented. Carbenes derived from diazo oxime ethers show unique reactivity towards N-O and C-H bond activation, in which the proximity of the two functionalities, carbene and oxime ether, dictates the preferred reaction pathways toward pyridines, pyrroles, and 2H-azirines. In Section 3.3, the development of tandem reactions based on α-diazo oxime ethers is discussed. The nature of carbenes in which whether free carbenes or metal complexes are involved dissects the pathway and forms different types of 2H-azirines. The 2H-azirine formation turned out to be an excellent platform for the tandem synthesis of N-heterocycles including pyrroles and pyridines. In the last section, we describe the electrophilic activation of 2H-azirines with vinyl carbenes and oximino carbenes. The resulting azirinium species undergo rapid ring expansion rearrangements to form pyridines and pyrazines.
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Affiliation(s)
- Subin Choi
- Department of Chemistry, UNIST (Ulsan National Institute of Science & Technology), Ulsan 44919, Korea.
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50
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Lv Y, Ogunlana AA, Li H, Gao D, Wang C, Bao X. Understanding the chemoselectivities between carbonyl and hydroxyl groups in the Rh(ii)–azavinyl carbene involved reactions. Catal Sci Technol 2018. [DOI: 10.1039/c8cy00899j] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Computational studies were carried out to understand the chemoselectivities between carbonyl and hydroxyl groups in the Rh(ii)–AVC involved reactions.
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Affiliation(s)
- Yuanzheng Lv
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Abosede Adejoke Ogunlana
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Hongli Li
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Dafang Gao
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Chenli Wang
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
| | - Xiaoguang Bao
- College of Chemistry
- Chemical Engineering and Materials Science
- Soochow University
- Suzhou 215123
- China
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