1
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Bao M, Zhou Y, Yuan H, Dong G, Li C, Xie X, Chen K, Hong K, Yu ZX, Xu X. Catalytic (4+2) Annulation via Regio- and Enantioselective Interception of in-situ Generated Alkylgold Intermediate. Angew Chem Int Ed Engl 2024; 63:e202401557. [PMID: 38775225 DOI: 10.1002/anie.202401557] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Indexed: 07/02/2024]
Abstract
A regio- and stereoselective stepwise (4+2) annulation of N-propargylamides and α,β-unsaturated imines/ketones has been accomplished with synergetic catalysis by a combination of a gold-complex and a chiral quinine-derived squaramide (QN-SQA), leading to highly functionalized chiral tetrahydropyridines/dihydropyrans in good to high yields with generally excellent enantioselectivity. Mechanistic studies and DFT calculations indicate that the in situ formed alkylgold species is the key intermediate in this transformation, and the amide group served as a traceless directing group in this highly selective transformation. This method complements the enantioselective (4+2) annulation of allene reagents, providing the formal internal C-C π-bond cycloaddition products, which is challenging and remains elusive.
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Affiliation(s)
- Ming Bao
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Yi Zhou
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, P. R. China
| | - Haoxuan Yuan
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Guizhi Dong
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Chao Li
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Xiongda Xie
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Kewei Chen
- School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou, 510006, P. R. China
| | - Kemiao Hong
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
| | - Zhi-Xiang Yu
- Beijing National Laboratory for Molecular Sciences (BNLMS), Key Laboratory of Bioorganic Chemistry and Molecular Engineering of Ministry of Education, College of Chemistry, Peking University, Beijing, 100871, P. R. China
| | - Xinfang Xu
- School of Chemistry and Chemical Engineering, Zhejiang Sci-Tech University, Hangzhou, 310018, P. R. China
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2
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Yan H, Shao X, Xu X, Li Z, Yang WL. Ir-Catalyzed Asymmetric Cascade Allylation/Spiroketalization Reaction for Stereoselective Synthesis of Oxazoline-Spiroketals. Org Lett 2023; 25:325-330. [PMID: 36607168 DOI: 10.1021/acs.orglett.2c03885] [Citation(s) in RCA: 5] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
An asymmetric cascade allylation/spiroketalization reaction between 2-(1-hydroxyallyl)phenols and 5-methyleneoxazolines is accomplished by using a chiral Ir(I) catalyst derived from commercially available iridium precursor and the Carreira ligand. This protocol furnishes a class of structurally novel and unique oxazoline-spiroketals in up to 86% yield, >99% ee and >20:1 dr. Moreover, control experiments reveal that 4,4-disubstitution on 5-methyleneoxazolines is necessary to avoid the aromatization and for the spiroketalization to occur. On the basis of this, a plausible reaction mechanism is illustrated.
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Affiliation(s)
- Hui Yan
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Xusheng Shao
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Xiaoyong Xu
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Zhong Li
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
| | - Wu-Lin Yang
- Shanghai Key Laboratory of Chemical Biology & School of Pharmacy, East China University of Science and Technology, 130 Meilong Road, Shanghai 200237, P. R. China
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3
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Chen Z, Li YF, Tan SZ, Ouyang Q, Chen ZC, Du W, Chen YC. Formal nucleophilic pyrrolylmethylation via palladium-based auto-tandem catalysis: switchable regiodivergent synthesis and remote chirality transfer. Chem Sci 2022; 13:12433-12439. [PMID: 36349271 PMCID: PMC9628985 DOI: 10.1039/d2sc05210e] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/19/2022] [Accepted: 10/05/2022] [Indexed: 09/10/2023] Open
Abstract
Although nucleophilic benzylation-type reaction to introduce various aromatic systems into molecules has been widely explored, the related pyrrolylmethylation version remains to be disclosed. Reported herein is a palladium-catalysed multiple auto-tandem reaction between N-Ts propargylamines, allyl carbonates and aldimines in the presence of an acid, proceeding through sequential allylic amination, cycloisomerisation, vinylogous addition and aromatisation steps. A diversity of formal pyrrolylmethylated amine products were finally furnished efficiently. In addition, switchable regiodivergent 3-pyrrolylmethylation and 4-pyrrolylmethylation were realised by tuning catalytic conditions. Moreover, remote chirality transfer with readily available enantioenriched starting materials was well achieved with an achiral ligand, relying on diastereoselective generation of η2-Pd(0) complexes between Pd(0) and chiral 1,3-diene intermediates in the key vinylogous addition step. A few control experiments were conducted to elucidate the palladium-involved tandem reaction and regiodivergent synthesis.
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Affiliation(s)
- Zhi Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Yu-Fan Li
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Shun-Zhong Tan
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Qin Ouyang
- College of Pharmacy, Third Military Medical University Shapingba Chongqing 400038 China
| | - Zhi-Chao Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University Chengdu 610041 China +86 28 85502609
- College of Pharmacy, Third Military Medical University Shapingba Chongqing 400038 China
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4
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Song X, Zhang J, Wu YX, Ouyang Q, Du W, Chen YC. Asymmetric Formal Nucleophilic o-Cresolylation with Morita-Baylis-Hillman Carbonates of 2-Cyclohexenones via Palladium Catalysis. J Am Chem Soc 2022; 144:9564-9569. [PMID: 35623059 DOI: 10.1021/jacs.2c04101] [Citation(s) in RCA: 9] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
Here we report an asymmetric formal nucleophilic o-cresolylation reaction with the Morita-Baylis-Hillman (MBH) carbonates from 2-cyclohexanones and diverse aldehydes under palladium catalysis, by in situ generation of electron-neutral and HOMO-raised η2-Pd(0)-dienone complexes via an oxidative insertion/π-σ-isomerization/β-H elimination activation sequence. The subsequent umpolung vinylogous addition to a variety of imines is realized upon Pd(0)-mediated π-Lewis base catalysis, finally furnishing o-cresolylated products followed by another cascade of a π-σ-isomerization/β-H elimination/aromatization process. Moderate to excellent diastereo- and enantioselectivity are achieved for substantial substrate assemblies by employing a newly designed bulky chiral phosphonamidite ligand, and the resultant multifunctional products can be facilely elaborated to access diverse enantioenriched architectures. In addition, the catalytic reaction pathway is finely illuminated by control experiments.
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Affiliation(s)
- Xue Song
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Jie Zhang
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Yu-Xing Wu
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Qin Ouyang
- College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
| | - Wei Du
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China
| | - Ying-Chun Chen
- Key Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry and Sichuan Province, and Sichuan Research Center for Drug Precision Industrial Technology, West China School of Pharmacy, Sichuan University, Chengdu 610041, China.,College of Pharmacy, Third Military Medical University, Shapingba, Chongqing 400038, China
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5
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Zhou S, Li Y, Liu X, Hu W, Ke Z, Xu X. Enantioselective Oxidative Multi-Functionalization of Terminal Alkynes with Nitrones and Alcohols for Expeditious Assembly of Chiral α-Alkoxy-β-amino-ketones. J Am Chem Soc 2021; 143:14703-14711. [PMID: 34463096 DOI: 10.1021/jacs.1c06178] [Citation(s) in RCA: 33] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Catalytic oxidative functionalization of alkynes has emerged as an effective method in synthetic chemistry in recent decades. However, enantioselective transformations via metal carbene intermediates are quite rare due to the lack of robust chiral catalysts, especially in the intermolecular versions. Herein, we report the first asymmetric three-component reaction of commercially available alkynes with nitrones and alcohols, which affords α-alkoxy-β-amino-ketones in good yields with high to excellent enantioselectivity using combined catalysis by an achiral gold complex and a chiral spiro phosphoric acid (CPA). Mechanistically, this atom-economic reaction involves a catalytic alkyne oxidation/ylide formation/Mannich-type addition sequence that uses nitrone as the oxidant and the leaving fragment imine as the electrophile, providing a novel method for multi-functionalization of commercially available terminal alkynes.
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Affiliation(s)
- Su Zhou
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Yinwu Li
- School of Materials Science & Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Xiangrong Liu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Wenhao Hu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
| | - Zhuofeng Ke
- School of Materials Science & Engineering, Sun Yat-sen University, Guangzhou 510275, China
| | - Xinfang Xu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery, School of Pharmaceutical Sciences, Sun Yat-sen University, Guangzhou 510006, China
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6
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Ene reactions of pre-aromatic heterocycles – Oxazoles. Tetrahedron Lett 2021. [DOI: 10.1016/j.tetlet.2021.153134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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7
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8
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Dong G, Bao M, Xie X, Jia S, Hu W, Xu X. Asymmetric Allylation by Chiral Organocatalyst‐Promoted Formal Hetero‐Ene Reactions of Alkylgold Intermediates. Angew Chem Int Ed Engl 2021. [DOI: 10.1002/ange.202012678] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Guizhi Dong
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Ming Bao
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Xiongda Xie
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Shikun Jia
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Wenhao Hu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Xinfang Xu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
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9
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Bisogno FR, Fernández R, Lassaletta JM, de Gonzalo G. Room Temperature Ionic Liquids in Asymmetric Hetero-Ene Type Reactions: Improving Organocatalyst Performance at Lower Temperatures. Molecules 2021; 26:molecules26020355. [PMID: 33445529 PMCID: PMC7827838 DOI: 10.3390/molecules26020355] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2020] [Revised: 12/30/2020] [Accepted: 01/08/2021] [Indexed: 11/25/2022] Open
Abstract
Room temperature ionic liquids (RTILs) have been widely used as (co)solvents in several catalytic processes modifying, in most of the cases, the catalyst activity and/or the selectivity for the studied reactions. However, there are just a few examples of their use in hydrogen bonding organocatalysis. In this paper, we show the positive effect of a set of imidazole-based ionic liquids ([bmim]BF4 and [hmim]PF6) in the enantioselective addition of formaldehyde tert-butylhydrazone to prochiral α-keto esters catalyzed by a sugar-based chiral thiourea. Reactions performed in the presence of low percentages of RTILs led to an increase of the catalyst activity, thereby making possible to work at lower temperatures. Thus, the chiral tert-butyl azomethyl tertiary alcohols could be obtained with moderate to good conversions and higher enantioselectivities for most of the studied substrates when using up to 30 vol% of [hmim]PF6 as a cosolvent in processes performed in toluene.
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Affiliation(s)
- Fabricio R. Bisogno
- Facultad de Ciencias Químicas, Instituto de Investigaciones en Físico-Química de Córdoba, Universidad Nacional de Córdoba, (INFIQC, CONICET-UNC), Haya de la Torre y Medina Allende, Ciudad Universitaria, Córdoba 5000, Argentina;
| | - Rosario Fernández
- Departamento de Química Orgánica, Universidad de Sevilla, c/Profesor García González 1, 41012 Sevilla, Spain;
| | - Jose María Lassaletta
- Instituto de Investigaciones Químicas (CSIC-US) and Centro de Innovación en Química Avanzada (ORFEO-CINQA), Avda. Américo Vespucio 49, 41092 Sevilla, Spain;
| | - Gonzalo de Gonzalo
- Departamento de Química Orgánica, Universidad de Sevilla, c/Profesor García González 1, 41012 Sevilla, Spain;
- Correspondence: ; Tel.: +34-954-559997
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10
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Dong G, Bao M, Xie X, Jia S, Hu W, Xu X. Asymmetric Allylation by Chiral Organocatalyst‐Promoted Formal Hetero‐Ene Reactions of Alkylgold Intermediates. Angew Chem Int Ed Engl 2020; 60:1992-1999. [DOI: 10.1002/anie.202012678] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 09/30/2020] [Indexed: 12/22/2022]
Affiliation(s)
- Guizhi Dong
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Ming Bao
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Xiongda Xie
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Shikun Jia
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Wenhao Hu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
| | - Xinfang Xu
- Guangdong Provincial Key Laboratory of Chiral Molecule and Drug Discovery School of Pharmaceutical Sciences Sun Yat-sen University Guangzhou 510006 P. R. China
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11
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Zamani P, Phipps J, Hu J, Cheema F, Amiri Rudbari H, Bordbar AK, Khosropour AR, Beyzavi H. Multicomponent Synthesis of Diversified Chromeno[3,2- d]oxazoles. ACS COMBINATORIAL SCIENCE 2019; 21:557-561. [PMID: 31276369 DOI: 10.1021/acscombsci.9b00084] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
A practical and efficient synthetic procedure to novel chromeno[3,2-d]oxazoles through a one-pot sequential multistep process is presented. This procedure proceeds efficiently in propylene carbonate (PC) as a green solvent and affords a wide range of the chromenooxazole scaffolds.
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Affiliation(s)
- Parisa Zamani
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | - Joshua Phipps
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Jiyun Hu
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Faizan Cheema
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Hadi Amiri Rudbari
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
| | | | - Ahmad R. Khosropour
- Department of Chemistry, University of Isfahan, Isfahan 81746-73441, Iran
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
| | - Hudson Beyzavi
- Cell and Molecular Biology Program, University of Arkansas, Fayetteville, Arkansas 72701, United States
- Department of Chemistry and Biochemistry, University of Arkansas, Fayetteville, Arkansas 72701, United States
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12
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Liu X, Zheng C, Yang Y, Jin S, You S. Iridium‐Catalyzed Asymmetric Allylic Aromatization Reaction. Angew Chem Int Ed Engl 2019. [DOI: 10.1002/ange.201904156] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Xi‐Jia Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Yi‐Han Yang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shicheng Jin
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 China
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13
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Liu X, Zheng C, Yang Y, Jin S, You S. Iridium‐Catalyzed Asymmetric Allylic Aromatization Reaction. Angew Chem Int Ed Engl 2019; 58:10493-10499. [DOI: 10.1002/anie.201904156] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2019] [Revised: 04/30/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Xi‐Jia Liu
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Chao Zheng
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Yi‐Han Yang
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shicheng Jin
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
| | - Shu‐Li You
- State Key Laboratory of Organometallic Chemistry, Center for Excellence in Molecular SynthesisShanghai Institute of Organic ChemistryUniversity of Chinese Academy of SciencesChinese Academy of Sciences 345 Lingling Lu Shanghai 200032 China
- Collaborative Innovation Center of Chemical Science and Engineering Tianjin 300072 China
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14
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Liu W, Zhou P, Lang J, Dong S, Liu X, Feng X. A nickel(ii)-catalyzed asymmetric intramolecular Alder-ene reaction of 1,7-dienes. Chem Commun (Camb) 2019; 55:4479-4482. [PMID: 30916688 DOI: 10.1039/c9cc01521c] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
A highly diastereo- and enantioselective intramolecular Alder-ene reaction with an alkene as the enophile has been developed by using a chiral N,N'-dioxide/nickel(ii) complex as the catalyst. This protocol provides a facile route towards the synthesis of diverse 3,4-disubstituted chroman, tetrahydroquinoline, piperidine and thiochroman derivatives in high yields with good to excellent diastereo- and enantioselectivities.
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Affiliation(s)
- Wen Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu 610064, P. R. China.
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15
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Liu YL, Lin XT. Recent Advances in Catalytic Asymmetric Synthesis of Tertiary Alcohols via
Nucleophilic Addition to Ketones. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201801023] [Citation(s) in RCA: 106] [Impact Index Per Article: 17.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022]
Affiliation(s)
- Yun-Lin Liu
- School of Chemistry and Chemical Engineering; Guangzhou University; Guangzhou 510006 People's Republic of China
| | - Xiao-Tong Lin
- School of Chemistry and Chemical Engineering; Guangzhou University; Guangzhou 510006 People's Republic of China
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16
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Zhang LL, Zhang JW, Xiang SH, Guo Z, Tan B. Stereoselective Construction of Complex Spirooxindoles via Bisthiourea Catalyzed Three-Component Reactions. CHINESE J CHEM 2018. [DOI: 10.1002/cjoc.201800368] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Affiliation(s)
- Lin-Lin Zhang
- College of Material Science & Engineering; Taiyuan University of Technology; Taiyuan Shanxi 030024 China
- Department of Chemistry; South University of Science and Technology of China; Shenzhen Guangdong 518055 China
| | - Ji-Wei Zhang
- Department of Chemistry; South University of Science and Technology of China; Shenzhen Guangdong 518055 China
| | - Shao-Hua Xiang
- Academy for Advanced Interdisciplinary Studies; Southern University of Science and Technology; Shenzhen Guangdong 518055 China
| | - Zhen Guo
- College of Material Science & Engineering; Taiyuan University of Technology; Taiyuan Shanxi 030024 China
| | - Bin Tan
- Department of Chemistry; South University of Science and Technology of China; Shenzhen Guangdong 518055 China
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17
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Liu W, Cao W, Hu H, Lin L, Feng X. Dynamic kinetic asymmetric transformations of β-halo-α-keto esters byN,N′-dioxide/Ni(ii)-catalyzed carbonyl-ene reaction. Chem Commun (Camb) 2018; 54:8901-8904. [DOI: 10.1039/c8cc04993a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Abstract
An effective dynamic kinetic asymmetric transformation of racemic β-halo-α-keto esters through carbonyl-ene reaction was realised.
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Affiliation(s)
- Wen Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Weidi Cao
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Haipeng Hu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education, College of Chemistry
- Sichuan University
- Chengdu 610064
- P. R. China
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18
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Zhang F, Wang J, Zhang X, Meng X, Chen B. A Regioselective Synthesis of 2,5-Diaryl Oxazoles via TsOH/I2
-Mediated Cascade Cyclization. ChemistrySelect 2017. [DOI: 10.1002/slct.201701390] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fangdong Zhang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; Lanzhou 730000 P. R. of China
| | - Jing Wang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; Lanzhou 730000 P. R. of China
| | - Xueguo Zhang
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; Lanzhou 730000 P. R. of China
| | - Xu Meng
- State Key Laboratory for Oxo Synthesis and Selective Oxidation; Suzhou Research Institute of LICP; Lanzhou Institute of Chemical Physics (LICP); Chinese Academy of Sciences; Lanzhou 730000 P. R. of China
| | - Baohua Chen
- State Key Laboratory of Applied Organic Chemistry; Lanzhou University; Key Laboratory of Nonferrous Metal Chemistry and Resources Utilization of Gansu Province; Lanzhou 730000 P. R. of China
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19
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Wang J, Zuo Y, Hu C, Su Z. Theoretical and experimental studies on the structure–property relationship of chiral N,N′-dioxide–metal catalysts probed by the carbonyl–ene reaction of isatin. Catal Sci Technol 2017. [DOI: 10.1039/c7cy00322f] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Abstract
Variation of the linkage or chiral backbone of an N,N′-dioxide ligand adjusts the blocking effect of ortho-iPr on the reaction site, affecting the enantiodifferentiation of two competing pathways.
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Affiliation(s)
- Junming Wang
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- College of Chemistry Sichuan University
- Chengdu
- P.R. China
| | - Yini Zuo
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- College of Chemistry Sichuan University
- Chengdu
- P.R. China
| | - Changwei Hu
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- College of Chemistry Sichuan University
- Chengdu
- P.R. China
| | - Zhishan Su
- Key Laboratory of Green Chemistry and Technology
- Ministry of Education
- College of Chemistry Sichuan University
- Chengdu
- P.R. China
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20
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Ren ZL, Guan ZR, Kong HH, Ding MW. Multifunctional odorless isocyano(triphenylphosphoranylidene)-acetates: synthesis and direct one-pot four-component Ugi/Wittig cyclization to multisubstituted oxazoles. Org Chem Front 2017. [DOI: 10.1039/c7qo00490g] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A new one-step four-component synthesis of multisubstituted oxazoles has been developed.
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Affiliation(s)
- Zhi-Lin Ren
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education
- Central China Normal University
- Wuhan
- P. R. China
| | - Zhi-Rong Guan
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education
- Central China Normal University
- Wuhan
- P. R. China
| | - Han-Han Kong
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education
- Central China Normal University
- Wuhan
- P. R. China
| | - Ming-Wu Ding
- Key Laboratory of Pesticide & Chemical Biology of Ministry of Education
- Central China Normal University
- Wuhan
- P. R. China
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21
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Luo W, Yuan X, Lin L, Zhou P, Liu X, Feng X. A N, N'-dioxide/Mg(OTf) 2 complex catalyzed enantioselective α-addition of isocyanides to alkylidene malonates. Chem Sci 2016; 7:4736-4740. [PMID: 30155124 PMCID: PMC6016448 DOI: 10.1039/c6sc00689b] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/15/2016] [Accepted: 04/12/2016] [Indexed: 11/21/2022] Open
Abstract
A simple and efficient catalytic asymmetric α-addition of isocyanides to alkylidene malonates was realized using a chiral N,N′-dioxide/MgII catalyst. A variety of 2-alkyl-5-aminoxazoles were obtained in up to 99% yield and 96% ee, and could be converted to imides and dipeptides.
A highly efficient catalytic asymmetric α-addition of isocyanides to alkylidene malonates was accomplished. The process was based on the utilization of a chiral N,N′-dioxide/MgII catalyst, delivering a variety of 2-alkyl-5-aminooxazoles in up to 99% yield and 96% ee under mild reaction conditions. Besides, a chiral imide and dipeptide could be easily obtained by ring-opening of the oxazole product, both of which are important structural motifs for many biologically active compounds. Based on the experimental investigations and previous work, a possible transition state model was proposed.
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Affiliation(s)
- Weiwei Luo
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Xiao Yuan
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Pengfei Zhou
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology , Ministry of Education , College of Chemistry , Sichuan University , Chengdu 610064 , China . ; ; ; Tel: +86 28 85418249.,Collaborative Innovation Center of Chemical Science and Engineering , Tianjin , China
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22
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Zeng TT, Xuan J, Ding W, Wang K, Lu LQ, Xiao WJ. [3 + 2] Cycloaddition/Oxidative Aromatization Sequence via Photoredox Catalysis: One-Pot Synthesis of Oxazoles from 2H-Azirines and Aldehydes. Org Lett 2015; 17:4070-3. [DOI: 10.1021/acs.orglett.5b01994] [Citation(s) in RCA: 97] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Ting-Ting Zeng
- Key Laboratory
of Pesticide
and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Jun Xuan
- Key Laboratory
of Pesticide
and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Wei Ding
- Key Laboratory
of Pesticide
and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Kuan Wang
- Key Laboratory
of Pesticide
and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Liang-Qiu Lu
- Key Laboratory
of Pesticide
and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
| | - Wen-Jing Xiao
- Key Laboratory
of Pesticide
and Chemical Biology, Ministry of Education, College of Chemistry, Central China Normal University, Wuhan 430079, China
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23
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Luo W, Zhao J, Ji J, Lin L, Liu X, Mei H, Feng X. A catalytic asymmetric carbonyl–ene reaction of β,γ-unsaturated α-ketoesters with 5-methyleneoxazolines. Chem Commun (Camb) 2015; 51:10042-5. [DOI: 10.1039/c5cc02748a] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Abstract
A catalytic asymmetric carbonyl–ene reaction of β,γ-unsaturated α-ketoesters with 5-methyleneoxazolines was accomplished. The process was based on the utilization of a chiral N,N′-dioxide/MgII catalyst, providing the desired products with excellent outcomes.
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Affiliation(s)
- Weiwei Luo
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Jiannan Zhao
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Jie Ji
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Lili Lin
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Hongjiang Mei
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
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