1
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Li D, Zhang S, Wang B, Sun W, Zhao J, Qu J, Zhou Y. Palladium-catalyzed stereoselective trifluoromethylated allylic alkylation of 3-substituted oxindoles. Org Chem Front 2022. [DOI: 10.1039/d1qo01597d] [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 palladium-catalyzed asymmetric trifluoromethylated allylic alkylation of 3-substituted oxindoles using α-(trifluoromethyl)alkenyl acetates as trifluoromethyl-containing allyl precursors was developed.
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Affiliation(s)
- Dong Li
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Shuaibo Zhang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Bangzhong Wang
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Wuding Sun
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Jinfeng Zhao
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Jingping Qu
- State Key Laboratory of Fine Chemicals, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
| | - Yuhan Zhou
- State Key Laboratory of Fine Chemicals, Department of Pharmaceutical Sciences, School of Chemical Engineering, Dalian University of Technology, 2 Linggong Road, Dalian 116024, China
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2
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Chen M, Xu XX, Wang X, Ren ZH, Guan ZH. endo-5-Norbornene-2,3-dimethanol-promoted asymmetric Heck/Suzuki cascade reaction of N-(2-bromophenyl)acrylamides. Org Chem Front 2022. [DOI: 10.1039/d2qo00998f] [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
An endo-5-norbornene-2,3-dimethanol-promoted highly enantioselective palladium-catalyzed Heck/Suzuki cascade reaction of N-(2-bromophenyl)acrylamides has been developed.
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Affiliation(s)
- Ming Chen
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Xing-Xing Xu
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Xucai Wang
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Zhi-Hui Ren
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
| | - Zheng-Hui Guan
- Key Laboratory of Synthetic and Natural Functional Molecule of the Ministry of Education, Shaanxi Key Laboratory for Carbon Neutral Technology, Department of Chemistry & Materials Science, Northwest University, Xi'an 710127, P.R. China
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3
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Wu ZH, Cheng AQ, Yuan M, Zhao YX, Yang HL, Wei LH, Wang HY, Wang T, Zhang Z, Duan WL. Cobalt-Catalysed Asymmetric Addition and Alkylation of Secondary Phosphine Oxides for the Synthesis of P-Stereogenic Compounds. Angew Chem Int Ed Engl 2021; 60:27241-27246. [PMID: 34739169 DOI: 10.1002/anie.202111137] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2021] [Revised: 10/21/2021] [Indexed: 01/01/2023]
Abstract
The catalytic asymmetric synthesis of P-chiral phosphorus compounds is an important way to construct P-chiral ligands. Herein, we report a new strategy that adopts the pyridinyl moiety as the coordinating group in the cobalt-catalysed asymmetric nucleophilic addition/alkylation of secondary phosphine oxides. A series of tertiary phosphine oxides were generated with up to 99 % yield and 99.5 % ee, and with broad functional-group tolerance. Mechanistic studies reveal that (R)-secondary phosphine oxides preferentially interact with the cobalt catalysts to produce P-stereogenic compounds.
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Affiliation(s)
- Zeng-Hua Wu
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China
| | - An-Qi Cheng
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China
| | - Meng Yuan
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China
| | - Ya-Xuan Zhao
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China
| | - Huai-Lan Yang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China
| | - Li-Hua Wei
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China
| | - Huai-Yu Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China
| | - Tao Wang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China
| | - Zunting Zhang
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China
| | - Wei-Liang Duan
- School of Chemistry and Chemical Engineering, Shaanxi Normal University, 620 Xi Changan Street, Xi'an, 710119, China.,College of Chemistry and Chemical Engineering, Yangzhou University, 180 Siwangting Road, Yangzhou, 225002, China
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4
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Wu Z, Cheng A, Yuan M, Zhao Y, Yang H, Wei L, Wang H, Wang T, Zhang Z, Duan W. Cobalt‐Catalysed Asymmetric Addition and Alkylation of Secondary Phosphine Oxides for the Synthesis of
P
‐Stereogenic Compounds. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202111137] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Zeng‐Hua Wu
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
| | - An‐Qi Cheng
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
| | - Meng Yuan
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
| | - Ya‐Xuan Zhao
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
| | - Huai‐Lan Yang
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
| | - Li‐Hua Wei
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
| | - Huai‐Yu Wang
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
| | - Tao Wang
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
| | - Zunting Zhang
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
| | - Wei‐Liang Duan
- School of Chemistry and Chemical Engineering Shaanxi Normal University 620 Xi Changan Street Xi'an 710119 China
- College of Chemistry and Chemical Engineering Yangzhou University 180 Siwangting Road Yangzhou 225002 China
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5
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Shen Y, Lei N, Lu C, Xi D, Geng X, Tao P, Su Z, Zheng K. Construction of sterically congested oxindole derivatives via visible-light-induced radical-coupling. Chem Sci 2021; 12:15399-15406. [PMID: 34976361 PMCID: PMC8635216 DOI: 10.1039/d1sc05273j] [Citation(s) in RCA: 15] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/23/2021] [Accepted: 11/03/2021] [Indexed: 01/04/2023] Open
Abstract
The oxindole scaffold represents an important structural feature in many natural products and pharmaceutically relevant molecules. Herein, we report a visible-light-induced modular methodology for the synthesis of complex 3,3'-disubstituted oxindole derivatives. A library of valuable fluoroalkyl-containing highly sterically congested oxindole derivatives can be synthesized by a catalytic three-component radical coupling reaction under mild conditions (metal & photocatalyst free, >80 examples). This strategy shows high functional group tolerance and broad substrate compatibility (including a wide variety of terminal or non-terminal alkenes, conjugated dienes and enynes, and a broad array of polyfluoroalkyl iodide and oxindoles), which enables modular modification of complex drug-like compounds in one chemical step. The success of solar-driven transformation, large-scale synthesis, and the late-stage functionalization of bioactive molecules, as well as promising tumor-suppressing biological activities, highlights the potential for practical applications of this strategy. Mechanistic investigations, including a series of control experiments, UV-vis spectroscopy and DFT calculations, suggest that the reaction underwent a sequential two-step radical-coupling process and the photosensitive perfluoroalkyl benzyl iodides are key intermediates in the transformation.
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Affiliation(s)
- Yanling Shen
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China
| | - Ning Lei
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China
| | - Cong Lu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China
| | - Dailin Xi
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China
| | - Xinxin Geng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China
| | - Pan Tao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China
| | - Ke Zheng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University Chengdu 610064 P. R. China
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6
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Lin J, Jia M, Ma S. Pd‐Catalyzed
2,
3‐Allenylation
of Oxindoles with 2,
3‐Allenylic
Carbonates. CHINESE J CHEM 2021. [DOI: 10.1002/cjoc.202100402] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Jie Lin
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 China
| | - Minqiang Jia
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 China
| | - Shengming Ma
- Research Center for Molecular Recognition and Synthesis, Department of Chemistry Fudan University 220 Handan Lu Shanghai 200433 China
- State Key Laboratory of Organometallic Chemistry Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Lu Shanghai 200032 China
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7
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Sohtome Y, Kanomata K, Sodeoka M. Cross-Coupling Reactions of Persistent Tertiary Carbon Radicals. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2021. [DOI: 10.1246/bcsj.20200376] [Citation(s) in RCA: 11] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Yoshihiro Sohtome
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Kyohei Kanomata
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
| | - Mikiko Sodeoka
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
- RIKEN Center for Sustainable Resource Science, 2-1 Hirosawa, Wako, Saitama 351-0198, Japan
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8
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Matveeva R, Blasius CK, Wadepohl H, Gade LH. Reactivity of a T-shaped cobalt(I) pincer-complex. Dalton Trans 2021; 50:6802-6810. [PMID: 34032245 DOI: 10.1039/d1dt00277e] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The reactivity of a paramagnetic T-shaped cobalt(i) complex, [(iPrboxmi)Co], stabilised by a monoanionic bis(oxazolinylmethylidene)-isoindolate (boxmi) NNN pincer ligand is described. The exposure to carbon monoxide as an additional neutral ligand resulted in the square-planar species [(iPrboxmi)Co(CO)], accompanied by a change in the electronic spin state from S = 1 to S = 0. In contrast, upon treatment with trimethylphosphine the formation of the distorted tetrahedral complex [(iPrboxmi)Co(PMe3)] was observed (S = 1). Reacting [(iPrboxmi)Co] with iodine (I2), organic peroxides (tBu2O2, (SiMe3)2O2) and diphenyldisulphide (Ph2S2) yielded the tetracoordinated complexes [(iPrboxmi)CoI], [(iPrboxmi)Co(OtBu)], [(iPrboxmi)Co(OSiMe3)] and [(iPrboxmi)Co(SPh)], respectively, demonstrating the capability of the boxmi-supported cobalt(i) complex to homolytically cleave bonds and thus its distinct one-electron reactivity. Furthermore, a square-planar cobalt(ii) alkynyl complex [(iPrboxmi)Co(CCArF)] was identified as the main product in the reaction between [(iPrboxmi)Co] and a terminal alkyne, 4-fluoro-1-ethynylbenzene. Putting such species in the context of the previously investigated hydroboration catalysis, its stoichiometric reaction with pinacolborane revealed its potential conversion into a cobalt(ii) hydride complex, thus confirming its original attribution as off-cycle species.
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Affiliation(s)
- Regina Matveeva
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | - Clemens K Blasius
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
| | - Lutz H Gade
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120 Heidelberg, Germany.
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9
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Ohnishi R, Sugawara M, Ezawa T, Sohtome Y, Sodeoka M. Formal Aerobic Oxidative Cross-Coupling of Benzofuranones with Azo Compounds Using Pd-μ-hydroxo Complex. Chem Pharm Bull (Tokyo) 2020; 68:895-898. [PMID: 32879230 DOI: 10.1248/cpb.c20-00359] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
We have developed a catalytic aerobic oxidative dimerization reaction of benzofuranones using a Pd(II)-µ-hydroxo complex. Radical-radical cross-coupling of the resulting dimers with azo compounds enabled the one-pot synthesis of structurally congested benzofuranones having two distinct vicinal all-carbon quaternary centers.
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Affiliation(s)
- Rikako Ohnishi
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research.,Graduate School of Science and Engineering, Saitama University
| | - Masumi Sugawara
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research
| | - Tetsuya Ezawa
- Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science
| | - Yoshihiro Sohtome
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research.,Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science
| | - Mikiko Sodeoka
- Synthetic Organic Chemistry Laboratory, RIKEN Cluster for Pioneering Research.,Graduate School of Science and Engineering, Saitama University.,Catalysis and Integrated Research Group, RIKEN Center for Sustainable Resource Science
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10
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NNN‐
Cobalt(II) Pincer Complexes: Paramagnetic NMR Spectroscopy in Solution and Application as Hydrosilylation Catalysts. Eur J Inorg Chem 2020. [DOI: 10.1002/ejic.202000378] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/05/2023]
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11
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Tsuji T, Tanaka T, Tanaka T, Yazaki R, Ohshima T. Catalytic Aerobic Cross-Dehydrogenative Coupling of Azlactones en Route to α,α-Disubstituted α-Amino Acids. Org Lett 2020; 22:4164-4170. [PMID: 32396012 DOI: 10.1021/acs.orglett.0c01248] [Citation(s) in RCA: 22] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
We developed a catalytic aerobic method to synthesize α,α-disubstituted α-amino acids through cross-dehydrogenative coupling of azlactones. Combining an iron catalyst with a bisoxazolidine ligand resulted in high catalytic performance, and cross-coupling with an indole proceeded smoothly under aerobic conditions. A wide variety of α-aryl and aliphatic amino acid derived azlactones were applied to the present catalysis. In addition, a quaternary carbon could be constructed using oxindole and benzofuranone under aerobic conditions.
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Affiliation(s)
- Taro Tsuji
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takafumi Tanaka
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Tsukushi Tanaka
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Ryo Yazaki
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
| | - Takashi Ohshima
- Graduate School of Pharmaceutical Sciences, Kyushu University, Maidashi, Higashi-ku, Fukuoka 812-8582, Japan
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12
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Blasius CK, Ren BT, Bürgy D, Liu YK, Li B, Michalsky I, Wadepohl H, Deng QH, Gade LH. Expanding the Boxmi Ligand Family: Synthesis and Application of NON and NSN Ligands. J Org Chem 2020; 85:6719-6731. [PMID: 32286820 DOI: 10.1021/acs.joc.0c00751] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
Two synthetic strategies for a new family of neutral NON ligands featuring a "bis(oxazolinylmethylidene)isobenzofuran" framework (boxman) are reported. A Pd-mediated cyclization reaction forming the isobenzofuran core constitutes the key reaction in the eight-step synthetic route to the nonbackbone-methylated target compound H,Rboxman. In contrast, the introduction of two additional methyl groups provides stereochemical control during backbone construction and thereby access to the methylated derivative Me,Rboxman, which was synthesized in five steps and improved yields. In addition, the synthetic sequence was transferred to the thio analogue, providing access to the NSN ligand H,Rboxmene. Subsequent complexation experiments with iron and cobalt chloride precursors afforded the four-coordinated chlorido complexes Me,RboxmanMCl2 (R = Ph, iPr; M = Fe, Co) and established the boxman family as trans-chelating, bidentate bis(oxazoline) ligands. Application of the latter in the nickel(II)- and zinc(II)-catalyzed α-fluorination of β-ketoesters and oxindoles (up to 98% yield and 94% ee) demonstrated their suitability for enantioselective catalysis.
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Affiliation(s)
- Clemens K Blasius
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Bing-Tao Ren
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - David Bürgy
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Yan-Kai Liu
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Bin Li
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Ina Michalsky
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
| | - Qing-Hai Deng
- The Education Ministry Key Lab of Resource Chemistry and Shanghai Key Laboratory of Rare Earth Functional Materials, Shanghai Normal University, Shanghai 200234, P. R. China
| | - Lutz H Gade
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, Heidelberg 69120, Germany
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13
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Hong G, Nahide PD, Kozlowski MC. Cyanomethylation of Substituted Fluorenes and Oxindoles with Alkyl Nitriles. Org Lett 2020; 22:1563-1568. [PMID: 32043885 DOI: 10.1021/acs.orglett.0c00160] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The first example of metal-free cyanomethylenation from alkyl nitriles of sp3 C-H bonds to afford quaternary carbon centers is described. This oxidative protocol is operationally simple and features good functional group compatibility. This method provides a novel approach to highly functionalized fluorene and oxindole derivatives, which are commonly used in material and pharmaceutical areas. Control experiments provide evidence of a radical reaction process.
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Affiliation(s)
- Gang Hong
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Pradip D Nahide
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
| | - Marisa C Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories , University of Pennsylvania , Philadelphia , Pennsylvania 19104 , United States
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14
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Ramesh K, Satyanarayana G. Microwave-assisted intramolecular reductive Heck in aqueous medium: Synthesis of 3,3′-Disubstituted heterocyclic compounds. J Organomet Chem 2019. [DOI: 10.1016/j.jorganchem.2019.120963] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
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15
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Kawasaki K, Aoki D, Otsuka H. Diarylbiindolinones as Substituent‐Tunable Mechanochromophores and Their Application in Mechanochromic Polymers. Macromol Rapid Commun 2019; 41:e1900460. [DOI: 10.1002/marc.201900460] [Citation(s) in RCA: 16] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2019] [Revised: 10/26/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Kazuma Kawasaki
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2‐12‐1 Ookayama Meguro‐ku Tokyo 152‐8550 Japan
| | - Daisuke Aoki
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2‐12‐1 Ookayama Meguro‐ku Tokyo 152‐8550 Japan
| | - Hideyuki Otsuka
- Department of Chemical Science and EngineeringTokyo Institute of Technology 2‐12‐1 Ookayama Meguro‐ku Tokyo 152‐8550 Japan
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16
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ZIF-8 Metal Organic Framework for the Conversion of Glucose to Fructose and 5-Hydroxymethyl Furfural. Catalysts 2019. [DOI: 10.3390/catal9100812] [Citation(s) in RCA: 21] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023] Open
Abstract
Herein, Zeolitic imidazolate framework-8 (ZIF-8) is considered as an easy and cheap to prepare alternative catalyst for the isomerization of glucose and production of 5-hydroxymethyl furfural (HMF). For the synthesis of the ZIF-8 catalysts two preparation methods were evaluated, being room temperature and hydrothermal synthesis at 140 °C. Of these, the hydrothermal synthesis method yields a material with exceptionally high surface area (1967 m2·g−1). As a catalyst, the ZIF-8 materials generated excellent fructose yields. Specifically, ZIF-8 prepared by hydrothermal synthesis yielded a fructose selectivity of 65% with a glucose conversion of 24% at 100 °C in aqueous reaction medium. However, this selectivity dropped dramatically when the reactions were repeated at higher temperatures (~140 °C). Interestingly, greater quantities of mannose were produced at higher temperatures too. The lack of strong Brønsted acidity in both ZIF-8 materials resulted in poor HMF yields. In order to improve HMF yields, reactions were performed at a lower pH of 1.0. At 140 °C the lower pH was found to drive the reaction towards HMF and double its yield. Despite the excellent performance of ZIF-8 catalysts in batch reactions, their activity did not translate well to the flow reactor over a continuous run of 8 h, which was operating with a residence time of 6 min. The activity of ZIF-8 halved in the flow reactor at 100 °C in ~3 h, which implies that the catalyst’s stability was not maintained in the long run.
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17
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Ohnishi R, Sugawara M, Akakabe M, Ezawa T, Koshino H, Sohtome Y, Sodeoka M. Cross‐Coupling Reaction of Dimer‐Derived Persistent Tertiary‐Carbon‐Centered Radicals with Azo Compounds. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900300] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Rikako Ohnishi
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research 2-1 Hirosawa, Wako Saitama Japan
- Graduate School of Science and EngineeringSaitama University 255 Shimo-okubo, Sakura-ku Saitama Japan
| | - Masumi Sugawara
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research 2-1 Hirosawa, Wako Saitama Japan
| | - Mai Akakabe
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research 2-1 Hirosawa, Wako Saitama Japan
| | - Tetsuya Ezawa
- Catalysis and Integrated Research Group RIKEN Center for Sustainable Resource Science 2-1 Hirosawa, Wako Saitama Japan
| | - Hiroyuki Koshino
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research 2-1 Hirosawa, Wako Saitama Japan
- Molecular Structure Characterization UnitTechnology Platform Division RIKEN Center for Sustainable Resource Science 2-1 Hirosawa, Wako Saitama Japan
| | - Yoshihiro Sohtome
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research 2-1 Hirosawa, Wako Saitama Japan
- Catalysis and Integrated Research Group RIKEN Center for Sustainable Resource Science 2-1 Hirosawa, Wako Saitama Japan
| | - Mikiko Sodeoka
- Synthetic Organic Chemistry LaboratoryRIKEN Cluster for Pioneering Research 2-1 Hirosawa, Wako Saitama Japan
- Catalysis and Integrated Research Group RIKEN Center for Sustainable Resource Science 2-1 Hirosawa, Wako Saitama Japan
- Graduate School of Science and EngineeringSaitama University 255 Shimo-okubo, Sakura-ku Saitama Japan
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18
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Zhang L, Wang M, Zhou M, Zhang Z, Muraoka M, Zhang W. Chiral Bicyclic Imidazole‐Catalyzed Direct Enantioselective C‐Acylation for the Synthesis of 2‐Oxindoles Bearing a Quaternary Stereocenter. ASIAN J ORG CHEM 2019. [DOI: 10.1002/ajoc.201900294] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Lu Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Mo Wang
- School of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Muxing Zhou
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Zhenfeng Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
| | - Masahiro Muraoka
- Department of Applied ChemistryOsaka Institute of Technology Ohmiya 5-16-1, Asahi-ku Osaka 535-8585 Japan
| | - Wanbin Zhang
- Shanghai Key Laboratory for Molecular Engineering of Chiral Drugs School of PharmacyShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
- School of Chemistry and Chemical EngineeringShanghai Jiao Tong University 800 Dongchuan Road Shanghai 200240 China
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19
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Hong G, Nahide PD, Neelam UK, Amadeo P, Vijeta A, Curto JM, Hendrick CE, VanGelder KF, Kozlowski MC. Palladium-Catalyzed Chemoselective Activation of sp 3 vs sp 2 C-H Bonds: Oxidative Coupling To Form Quaternary Centers. ACS Catal 2019; 9:3716-3724. [PMID: 31777683 DOI: 10.1021/acscatal.9b00091] [Citation(s) in RCA: 30] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The oxidative activation of alkyl C-H bonds vs arene C-H bonds with Pd(OAc)2 has been found to be generalizable to a number of nucleophilic substrates allowing the formation of a range of hindered quaternary centers. The substrates share a common mechanistic path wherein Pd(II) initiates an oxidative dimerization. The resultant dimer modifies the palladium catalyst to favor activation of alkyl C-H bonds in contrast to the trends typically observed via a concerted metalation deprotonation mechanism. Notably, insertion occurs at the terminus of the alkyl arene for hindered substrates. Two different oxidant systems were discovered that turn over the process. Parameters have been identified that predict, which substrates are productive in this reaction.
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Affiliation(s)
- Gang Hong
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
- Key Laboratory for Advanced Materials, Institute of Fine Chemicals and School of Chemistry & Molecular Engineering, East China University of Science and Technology, 130 Meilong Road, Shanghai, 200237, P. R. China
| | - Pradip D. Nahide
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Uday Kumar Neelam
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Peter Amadeo
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Arjun Vijeta
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - John M. Curto
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Charles E. Hendrick
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Kelsey F. VanGelder
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
| | - Marisa C. Kozlowski
- Department of Chemistry, Roy and Diana Vagelos Laboratories, University of Pennsylvania, Philadelphia, Pennsylvania 19104, United States
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20
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Blasius CK, Vasilenko V, Gade LH. Ultrafast Iron-Catalyzed Reduction of Functionalized Ketones: Highly Enantioselective Synthesis of Halohydrines, Oxaheterocycles, and Aminoalcohols. Angew Chem Int Ed Engl 2018; 57:10231-10235. [PMID: 29939466 DOI: 10.1002/anie.201806196] [Citation(s) in RCA: 33] [Impact Index Per Article: 5.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/29/2018] [Indexed: 11/08/2022]
Abstract
A molecularly defined chiral boxmi iron alkyl complex catalyzes the hydroboration of various functionalized ketones and provides the corresponding chiral halohydrines, oxaheterocycles (oxiranes, oxetanes, tetrahydrofurans, and dioxanes) and amino alcohols with excellent enantioselectivities (up to >99 %ee) and conversion efficiencies at low catalyst loadings (as low as 0.5 mol %). Turnover frequencies of greater than 40000 h-1 at -30 °C highlight the activity of this earth-abundant metal catalyst which tolerates a large number of functional groups.
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Affiliation(s)
- Clemens K Blasius
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Vladislav Vasilenko
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Lutz H Gade
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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21
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Blasius CK, Vasilenko V, Gade LH. Ultrafast Iron-Catalyzed Reduction of Functionalized Ketones: Highly Enantioselective Synthesis of Halohydrines, Oxaheterocycles, and Aminoalcohols. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201806196] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Clemens K. Blasius
- Anorganisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Vladislav Vasilenko
- Anorganisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Lutz H. Gade
- Anorganisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
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22
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Vasilenko V, Blasius CK, Gade LH. One-Pot Sequential Kinetic Profiling of a Highly Reactive Manganese Catalyst for Ketone Hydroboration: Leveraging σ-Bond Metathesis via Alkoxide Exchange Steps. J Am Chem Soc 2018; 140:9244-9254. [PMID: 29944350 DOI: 10.1021/jacs.8b05340] [Citation(s) in RCA: 44] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
A comprehensive experimental and computational mechanistic study of the highly enantioselective hydroboration of ketones catalyzed by a manganese(II) alkyl boxmi pincer complex is reported. The catalyst operates at low catalyst loadings (down to 0.01 mol %) under very mild conditions (typically -40 °C) and facilitates the reduction of both aryl alkyl and dialkyl ketones with excellent selectivity (up to >95%ee). Catalyst activation pathways were investigated, demonstrating that a manganese(II) hydride and a manganese(II) alkoxide species are part of the catalytic cycle and can be generated via σ-bond metathesis of the alkyl precursor with the borane or by alcoholysis. Extensive kinetic experiments based on a "one-pot sequential kinetic profiling" approach under various conditions in combination with kinetic simulations reveal that two catalytic cycles are effective with this earth-abundant base metal catalyst: (i) a minor MnH/borane-mediated insertion cycle, in which the subsequent, product-releasing metathesis step is rate determining ( k m = 0.076 s-1), giving a background reaction, which is zeroth order in substrate concentrations, and (ii) a major MnOR/borane-based alkoxide exchange process, leveraging the high-barrier metathesis via the affiliation to an insertion step. The latter features non-integer reaction orders in both reagents due to a combination of an adduct formation step ( k a = 2.12 M-1 s-1, k -a = 0.49 s-1) and a substrate insertion step of comparable rates ( k ai = 3.74 M-1 s-1). The kinetic findings are underpinned by high-level density functional theory calculations of the mechanism, control experiments, and kinetic isotope effect/Hammett/Eyring analysis in different concentration regimes. The study highlights the role of a rigorous mechanistic understanding of homogeneous catalytic processes in 3d metals for rational catalyst discovery and optimization.
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Affiliation(s)
- Vladislav Vasilenko
- Anorganisch-Chemisches Institut , Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - Clemens K Blasius
- Anorganisch-Chemisches Institut , Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
| | - Lutz H Gade
- Anorganisch-Chemisches Institut , Universität Heidelberg , Im Neuenheimer Feld 270 , 69120 Heidelberg , Germany
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23
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Paderes MC, Siau WY, Rong Z, Zhao Y. Catalytic and Enantioselective Direct α-Alkylation of 3-Aryl and 3-Alkyl Oxindole Using Quinine-Derived Urea Catalyst. ChemistrySelect 2018. [DOI: 10.1002/slct.201800906] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Affiliation(s)
- Monissa C. Paderes
- Department of Chemistry; National University of Singapore; 3 Science 3 Drive Singapore 117543
- Institute of Chemistry; University of the Philippines, Diliman; Quezon City Philippines 1101
| | - Woon Yew Siau
- Department of Chemistry; National University of Singapore; 3 Science 3 Drive Singapore 117543
| | - Ziqiang Rong
- Department of Chemistry; National University of Singapore; 3 Science 3 Drive Singapore 117543
| | - Yu Zhao
- Department of Chemistry; National University of Singapore; 3 Science 3 Drive Singapore 117543
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24
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Chen WT, Wei WT. Recent Developments in the C(sp3
)−H Functionalization of 2-Oxindoles through Radical Reactions. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800209] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Affiliation(s)
- Wei-Ting Chen
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 P. R. China
| | - Wen-Ting Wei
- School of Materials Science and Chemical Engineering; Ningbo University; Ningbo 315211 P. R. China
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25
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Tanaka T, Tanaka T, Tsuji T, Yazaki R, Ohshima T. Strategy for Catalytic Chemoselective Cross-Enolate Coupling Reaction via a Transient Homocoupling Dimer. Org Lett 2018; 20:3541-3544. [DOI: 10.1021/acs.orglett.8b01313] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Affiliation(s)
- Takafumi Tanaka
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Tsukushi Tanaka
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Taro Tsuji
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Ryo Yazaki
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
| | - Takashi Ohshima
- Graduate School of Pharmaceutical Sciences, Kyushu University, Fukuoka 812-8582, Japan
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26
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Ramesh K, Basuli S, Satyanarayana G. Microwave-Assisted Domino Palladium Catalysis in Water: A Diverse Synthesis of 3,3′-Disubstituted Heterocyclic Compounds. European J Org Chem 2018. [DOI: 10.1002/ejoc.201800155] [Citation(s) in RCA: 24] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Karu Ramesh
- Indian Institute of Technology (IIT) Hyderabad; Kandi - 502 285 Telangana Sangareddy District India
| | - Suchand Basuli
- Indian Institute of Technology (IIT) Hyderabad; Kandi - 502 285 Telangana Sangareddy District India
| | - Gedu Satyanarayana
- Indian Institute of Technology (IIT) Hyderabad; Kandi - 502 285 Telangana Sangareddy District India
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27
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Liu JJ, Huang HY, Cheng L, Liu Q, Wang D, Liu L. A catalyst-free intermolecular trans-iodoalkylation of alkynes. Org Biomol Chem 2018; 16:899-903. [PMID: 29350733 DOI: 10.1039/c7ob03159a] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
We report the first catalyst-free and trans-selective iodoalkylation reaction of alkynes with a series of α-carbonyl compounds. This unprecedented three-component iodoalkylation reaction is enabled by using (iodoethynyl)trimethylsilane as a radical initiator and iodide source. The 1,2-difunctionalization affords alkenyl iodides, which are versatile building blocks for the construction of tri-substituted alkene derivatives.
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Affiliation(s)
- Jie-Jie Liu
- Beijing National Laboratory for Molecular Sciences (BNLMS), CAS Key Laboratory of Molecular Recognition and Function, CAS Research/Education Center for Excellence in Molecular Sciences, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, China.
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28
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Schiwek CH, Vasilenko V, Wadepohl H, Gade LH. The open d-shell enforces the active space in 3d metal catalysis: highly enantioselective chromium(ii) pincer catalysed hydrosilylation of ketones. Chem Commun (Camb) 2018; 54:9139-9142. [DOI: 10.1039/c8cc05172k] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
A square-planar chromium precatalyst with its active space shaped by the metal centre was employed in an unprecedented enantioselective hydrosilylation of ketones.
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Affiliation(s)
| | - Vladislav Vasilenko
- Anorganisch-Chemisches Institut
- University of Heidelberg
- 69120 Heidelberg
- Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut
- University of Heidelberg
- 69120 Heidelberg
- Germany
| | - Lutz H. Gade
- Anorganisch-Chemisches Institut
- University of Heidelberg
- 69120 Heidelberg
- Germany
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29
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Wu Q, Pan L, Du G, Zhang C, Wang D. Preparation of pyridyltriazole ruthenium complexes as effective catalysts for the selective alkylation and one-pot C–H hydroxylation of 2-oxindole with alcohols and mechanism exploration. Org Chem Front 2018. [DOI: 10.1039/c8qo00725j] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Pyridyltriazole-ligated ruthenium(ii) complexes have been designed and synthesized, which were characterized by X-ray crystallography.
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Affiliation(s)
- Qiang Wu
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
| | - Le Pan
- Chemical Engineering College
- Xinjiang Agricultural University
- Urumqi 830052
- China
| | - Guangming Du
- Chemical Engineering College
- Xinjiang Agricultural University
- Urumqi 830052
- China
| | - Chi Zhang
- School of Chemical Science and Engineering
- Tongji University
- Shanghai 200092
- China
| | - Dawei Wang
- The Key Laboratory of Food Colloids and Biotechnology
- Ministry of Education
- School of Chemical and Material Engineering
- Jiangnan University
- Wuxi 214122
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30
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Wang H, Wang K, Man Y, Gao X, Yang L, Ren Y, Li N, Tang B, Zhao G. Asymmetric Intermolecular Rauhut−Currier Reaction for the Construction of 3,3-Disubstituted Oxindoles with Quaternary Stereogenic Centers. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700649] [Citation(s) in RCA: 38] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
Affiliation(s)
- Hongyu Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
| | - Kaiye Wang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Yunquan Man
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Xiaonan Gao
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Limin Yang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Yanfei Ren
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Na Li
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Bo Tang
- College of Chemistry, Chemical Engineering and Materials Science, Collaborative Innovation Center of Functionalized Probes for Chemical Imaging in Universities of Shandong, Key Laboratory of Molecular and Nano Probes, Ministry of Education, Institute of Molecular and Nano Science; Shandong Normal University; Jinan 250014 People's Republic of China
| | - Gang Zhao
- Key Laboratory of Synthetic Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Lingling Lu Shanghai 200032 People's Republic of China
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31
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Luo M, Zhang JC, Pang WM, Hii KK. One-step multicomponent synthesis of chiral oxazolinyl-zinc complexes. Chem Cent J 2017; 11:81. [PMID: 29086857 PMCID: PMC5549684 DOI: 10.1186/s13065-017-0305-1] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/03/2017] [Accepted: 07/26/2017] [Indexed: 11/10/2022] Open
Abstract
BACKGROUND Typically, oxazolinyl metal complexes are synthesized in two steps, where the free ligand is prepared by the condensation reaction between a functionalized nitrile and an amino alcohol in the presence of a Lewis or Brønsted acid catalyst, followed by a further reaction with metal salts to obtain the corresponding metal complexes. Very often, the yield afforded by the two-step procedure is not high, and very few oxazolinyl zinc complexes have been prepared by this route. Given that metal-oxazoline complexes often contain Lewis acidic metals, it is conceivable that the two steps may be telescoped. RESULTS A series of novel chiral organozinc complexes 1-15 were assembled in a single step, All crystalline compounds were fully characterized, including the report of 15 X-ray crystal structures, including a wide structural diversity. CONCLUSIONS A series of novel chiral organozinc complexes were assembled in a single step, from nitriles, chiral D/L amino alcohols, and a stoichiometric amount of ZnCl2, with moderate to high yields (20-90%).
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Affiliation(s)
- Mei Luo
- College of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China.
| | - Jing Cheng Zhang
- College of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei, 230009, People's Republic of China
| | - Wen Min Pang
- Department of Chemistry, University of Science and Technology of China, Hefei, 230009, People's Republic of China
| | - King Kuok Hii
- Department of Chemistry, Imperial College London, Exhibition Road, South Kensington, London, SW7 2AZ, UK.
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32
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Qiu J, Wu D, Karmaker PG, Qi G, Chen P, Yin H, Chen FX. Catalytic Asymmetric Electrophilic Cyanation of 3-Substituted Oxindoles. Org Lett 2017; 19:4018-4021. [DOI: 10.1021/acs.orglett.7b01756] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Jiashen Qiu
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Di Wu
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Pran Gopal Karmaker
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Guirong Qi
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Peng Chen
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Hongquan Yin
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
| | - Fu-Xue Chen
- School of Chemistry & Chemical Engineering, Beijing Institute of Technology, 5 South Zhongguancun Street, Haidian district, Beijing 100081, China
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33
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Vasilenko V, Blasius CK, Wadepohl H, Gade LH. Mechanism-Based Enantiodivergence in Manganese Reduction Catalysis: A Chiral Pincer Complex for the Highly Enantioselective Hydroboration of Ketones. Angew Chem Int Ed Engl 2017; 56:8393-8397. [PMID: 28544219 DOI: 10.1002/anie.201704184] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2017] [Revised: 05/15/2017] [Indexed: 01/01/2023]
Abstract
A manganese alkyl complex containing a chiral bis(oxazolinyl-methylidene)isoindoline pincer ligand is a precatalyst for a catalytic system of unprecedented activity and selectivity in the enantioselective hydroboration of ketones, thus producing preparatively useful chiral alcohols in excellent yields with up to greater than 99 % ee. It is applicable for both aryl alkyl and dialkyl ketone reduction under mild reaction conditions (TOF >450 h-1 at -40 °C). The earth-abundant base-metal catalyst operates at very low catalyst loadings (as low as 0.1 mol %) and with a high level of functional-group tolerance. There is evidence for the existence of two distinct mechanistic pathways for manganese-catalyzed hydride transfer and their role for enantiocontrol in the selectivity-determining step is presented.
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Affiliation(s)
- Vladislav Vasilenko
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Clemens K Blasius
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
| | - Lutz H Gade
- Anorganisch-Chemisches Institut, Universität Heidelberg, Im Neuenheimer Feld 270, 69120, Heidelberg, Germany
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34
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Vasilenko V, Blasius CK, Wadepohl H, Gade LH. Mechanism-Based Enantiodivergence in Manganese Reduction Catalysis: A Chiral Pincer Complex for the Highly Enantioselective Hydroboration of Ketones. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201704184] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Vladislav Vasilenko
- Anorganisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Clemens K. Blasius
- Anorganisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Hubert Wadepohl
- Anorganisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
| | - Lutz H. Gade
- Anorganisch-Chemisches Institut; Universität Heidelberg; Im Neuenheimer Feld 270 69120 Heidelberg Germany
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35
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Société Chimique de France Prizes 2016. Angew Chem Int Ed Engl 2017; 56:1187. [DOI: 10.1002/anie.201611701] [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]
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36
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Preise 2016 der Société Chimique de France. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201611701] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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37
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Qiu JS, Wang YF, Qi GR, Karmaker PG, Yin HQ, Chen FX. Highly Enantioselective α-Cyanation with 4-Acetylphenyl Cyanate. Chemistry 2017; 23:1775-1778. [DOI: 10.1002/chem.201605610] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Indexed: 01/14/2023]
Affiliation(s)
- Jia-Shen Qiu
- School of Chemical Engineering and the Environment; Beijing Institute of Technology; 5 South Zhongguancun Street, Haidian district Beijing 100081 P. R. China
| | - Yao-Feng Wang
- School of Chemical Engineering and the Environment; Beijing Institute of Technology; 5 South Zhongguancun Street, Haidian district Beijing 100081 P. R. China
| | - Gui-Rong Qi
- School of Chemical Engineering and the Environment; Beijing Institute of Technology; 5 South Zhongguancun Street, Haidian district Beijing 100081 P. R. China
| | - Pran G. Karmaker
- School of Chemical Engineering and the Environment; Beijing Institute of Technology; 5 South Zhongguancun Street, Haidian district Beijing 100081 P. R. China
| | - Hong-Quan Yin
- School of Chemical Engineering and the Environment; Beijing Institute of Technology; 5 South Zhongguancun Street, Haidian district Beijing 100081 P. R. China
| | - Fu-Xue Chen
- School of Chemical Engineering and the Environment; Beijing Institute of Technology; 5 South Zhongguancun Street, Haidian district Beijing 100081 P. R. China
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Jia SK, Song LL, Lei YB, Gopi Krishna Reddy A, Xing D, Hu WH. A Rh(ii)-catalyzed three-component reaction of 3-diazooxindoles with N,N-disubstituted anilines and glyoxylates for the synthesis of 3-aryl-3-substituted oxindoles. Org Biomol Chem 2016; 14:10157-10160. [PMID: 27731463 DOI: 10.1039/c6ob01907b] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
A simple and effective method for the synthesis of 3-aryl-3-substituted oxindole derivatives via a [Rh]-catalyzed three-component reaction of 3-diazooxindoles with N,N-disubstituted anilines and glyoxylates is developed. This transformation is proposed to proceed through an intermolecular aldol-type trapping of zwitterionic intermediates.
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Affiliation(s)
- Shi-Kun Jia
- 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, China.
| | - Long-Long 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, China.
| | - Yu-Bing Lei
- 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, China.
| | - A Gopi Krishna Reddy
- 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, China.
| | - Dong Xing
- 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, China.
| | - Wen-Hao Hu
- 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, China.
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