1
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Biswas A, Kundu S, Maji MS, Pal D, Pal A. Organocatalyzed Oxa-Diels–Alder Reactions: Recent Progress. SYNTHESIS-STUTTGART 2022. [DOI: 10.1055/a-1514-1049] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
Abstract
AbstractThe oxa-Diels–Alder reaction is a straightforward, atom-economical process for the construction of six-membered oxacycles, which are privileged structures due to their very common occurrence in several pharmaceuticals and natural products. As with many other asymmetric transformations, organocatalysis provides an elegant pathway to their synthesis via [4+2] annulation under mild reaction conditions. The oxa-Diels–Alder reaction utilizes either an α,β-unsaturated carbonyl as an oxa-diene with a suitable dienophile or a simple carbonyl as a dienophile with other dienes. A range of organocatalysts has been explored in the past decade to execute this strategy. The catalysts induce stereoselectivities via two basic reactivities: (1) The formation of chiral intermediates, or (2) selectively activating suitable reactants via a transition state. The present short review compiles organocatalyzed asymmetric oxa-Diels–Alder reactions published over the last ten years, along with detailed discussions on mechanistic approaches.1 Introduction2 Catalysis through Covalent Activation2.1 N-Heterocyclic Carbenes2.2 Amines2.3 Isothiourea Catalysis2.4 Phosphines3 Catalysis through Non-Covalent Activation3.1 Bifunctional Amines3.2 Brønsted Acids3.3 Guanidines4 Multicatalysis through Both Covalent and Non-Covalent Activation5 Conclusion
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Affiliation(s)
- Anup Biswas
- Department of Chemistry, Hooghly Women’s College
| | - Samrat Kundu
- Department of Chemistry, Indian Institute of Technology Kharagpur
| | - Modhu Sudan Maji
- Department of Chemistry, Indian Institute of Technology Kharagpur
| | - Dhananjoy Pal
- Department of Chemistry, Indian Institute of Technology Kharagpur
| | - Amit Pal
- Department of Chemistry, Indian Institute of Technology Kharagpur
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2
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Wang C, Chen YH, Wu HC, Wang C, Liu YK. The Quinary Catalyst-Substrate Complex Induced Construction of Spiro-Bridged or Cagelike Polyheterocyclic Compounds via a Substrate-Controlled Cascade Process. Org Lett 2019; 21:6750-6755. [PMID: 31433194 DOI: 10.1021/acs.orglett.9b02375] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
The asymmetric organocatalytic cascade reaction of cyclic β-oxo aldehydes to 2-hydroxycinnamaldehydes is developed. The bifunctional tertiary amine-thiourea catalyst was used in a rationally designed multiple catalysis where the asymmetric iminium catalysis and thiourea anion-binding catalysis were combined by carboxylate anion as a ternary catalytic system to form a quinary catalyst-substrate complex, providing an efficient protocol for the construction of enantioenriched spiro-bridged or cagelike polyheterocyclic compounds. The reuse of catalysts was also successfully realized.
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Affiliation(s)
- Chen Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Ying-Han Chen
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Hui-Chun Wu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Cong Wang
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China
| | - Yan-Kai Liu
- Key Laboratory of Marine Drugs, Chinese Ministry of Education, School of Medicine and Pharmacy, Ocean University of China, Qingdao 266003, China.,Laboratory for Marine Drugs and Bioproducts of Qingdao National Laboratory for Marine Science and Technology, Qingdao 266003, China
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3
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Bi HY, Liu FP, Liang C, Su GF, Mo DL. A Tunable Route to Prepare α,β-Unsaturated Esters and α,β-Unsaturated-γ-Keto Esters through Copper-Catalyzed Coupling of Alkenyl Boronic Acids with Phosphorus Ylides. Adv Synth Catal 2018. [DOI: 10.1002/adsc.201701640] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Hong-Yan Bi
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Feng-Ping Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Gui-Fa Su
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
| | - Dong-Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources; Ministry of Science and Technology of China; School of Chemistry and Pharmaceutical Sciences; Guangxi Normal University; 15 Yu Cai Road Guilin 541004 People's Republic of China
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4
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Desimoni G, Faita G, Quadrelli P. Forty Years after “Heterodiene Syntheses with α,β-Unsaturated Carbonyl Compounds”: Enantioselective Syntheses of 3,4-Dihydropyran Derivatives. Chem Rev 2018; 118:2080-2248. [DOI: 10.1021/acs.chemrev.7b00322] [Citation(s) in RCA: 76] [Impact Index Per Article: 12.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giovanni Desimoni
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Giuseppe Faita
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Paolo Quadrelli
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
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5
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Sun QS, Zhu H, Lin H, Tan Y, Yang XD, Sun XW, Sun X. Dual-organocatalytic Michael/Michael/aldol cascade reaction for the asymmetric construction of fully-substituted cyclohexane. Tetrahedron Lett 2016. [DOI: 10.1016/j.tetlet.2016.11.033] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/18/2023]
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6
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Ling T, Rivas F. All-carbon quaternary centers in natural products and medicinal chemistry: recent advances. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.002] [Citation(s) in RCA: 155] [Impact Index Per Article: 19.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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7
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Zhang M, Huang G. Mechanism and Selectivity of RuII- and RhIII-Catalyzed Oxidative Spiroannulation of Naphthols and Phenols with Alkynes through a C−H Activation/Dearomatization Strategy. Chemistry 2016; 22:9356-65. [DOI: 10.1002/chem.201600884] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2016] [Indexed: 01/19/2023]
Affiliation(s)
- Mei Zhang
- Department of Chemistry; School of Science; Tianjin University; Tianjin 300072 P.R. China
| | - Genping Huang
- Department of Chemistry; School of Science; Tianjin University; Tianjin 300072 P.R. China
- Collaborative Innovation Center of Chemical Science and Engineering (Tianjin); Tianjin 300072 P.R. China
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8
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Vishwanath M, Vinayagam P, Gajulapalli VPR, Kesavan V. Asymmetric Organocatalytic Assembly of Oxindoles Fused with Spiro-3,4-dihydropyrans with Three Contiguous Stereocenters Consisting of Vicinal Quaternary Centers. ASIAN J ORG CHEM 2016. [DOI: 10.1002/ajoc.201600051] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/14/2023]
Affiliation(s)
- Manjunatha Vishwanath
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
| | - Poopathy Vinayagam
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
| | - V Pratap Reddy Gajulapalli
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
| | - Venkitasamy Kesavan
- Chemical Biology Laboratory; Department of Biotechnology; Bhupat and Jyothi Mehta School of Biosciences; Indian Institute of Technology Madras; Chennai 600036 India
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9
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Filatova EV, Turova OV, Kuchurov IV, Kostenko AA, Nigmatov AG, Zlotin SG. Asymmetric catalytic synthesis of functionalized tetrahydroquinolines in supercritical fluids. J Supercrit Fluids 2016. [DOI: 10.1016/j.supflu.2015.11.004] [Citation(s) in RCA: 19] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
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10
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Rong C, Pan H, Liu M, Tian H, Shi Y. A Facile Approach to Optically Active Hydroquinoline-2-carboxylates by a One-Pot Asymmetric Michael/Transamination/Cyclization Process. Chemistry 2016; 22:2887-91. [DOI: 10.1002/chem.201503327] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/21/2015] [Indexed: 11/08/2022]
Affiliation(s)
- Chao Rong
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Hongjie Pan
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Mao Liu
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Hua Tian
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
| | - Yian Shi
- Beijing National Laboratory for Molecular Sciences; CAS Key Laboratory of Molecular Recognition and Function; Institute of Chemistry; Chinese Academy of Sciences; Beijing 100190 P. R. China
- Department of Chemistry; Colorado State University; Fort Collins Colorado 80523 USA
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11
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Sanna E, López C, Ballester P, Rotger C, Costa A. Unexpected Squaramide-Induced Cleavage of Benzils: Synthesis and Characterization of Mono-Aroyl Squarimides. European J Org Chem 2015. [DOI: 10.1002/ejoc.201501235] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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12
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Zhao BL, Du DM. Organocatalytic Enantioselective Cascade Aza-Michael/Michael Addition Sequence for Asymmetric Synthesis of Chiral Spiro[pyrrolidine-3,3′-oxindole]s. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500306] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Affiliation(s)
- Bo-Liang Zhao
- School of Chemical Engineering and Environment; Beijing Institute of Technology; 5 South Zhongguancun Street Beijing 100081 People's Republic of China
| | - Da-Ming Du
- School of Chemical Engineering and Environment; Beijing Institute of Technology; 5 South Zhongguancun Street Beijing 100081 People's Republic of China
- State Key Laboratory of Elemento-Organic Chemistry; Nankai University
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13
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Zhao BL, Du DM. Chiral Squaramide-Catalyzed Michael/Alkylation Cascade Reaction for the Asymmetric Synthesis of Nitro-Spirocyclopropanes. European J Org Chem 2015. [DOI: 10.1002/ejoc.201500533] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
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14
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Zhao BL, Du DM. Chiral-Squaramide-Catalyzed Sulfa-Michael/Aldol Cascade Reactions for Asymmetric Synthesis of Spirothiochromanones. ASIAN J ORG CHEM 2015. [DOI: 10.1002/ajoc.201500171] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Affiliation(s)
- Bo-Liang Zhao
- School of Chemical Engineering and Environment; Beijing Institute of Technology; 5 South Zhongguancun Street Beijing 100081 P. R. China
| | - Da-Ming Du
- School of Chemical Engineering and Environment; Beijing Institute of Technology; 5 South Zhongguancun Street Beijing 100081 P. R. China
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15
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Chauhan P, Mahajan S, Kaya U, Hack D, Enders D. Bifunctional Amine-Squaramides: Powerful Hydrogen-Bonding Organocatalysts for Asymmetric Domino/Cascade Reactions. Adv Synth Catal 2015. [DOI: 10.1002/adsc.201401003] [Citation(s) in RCA: 412] [Impact Index Per Article: 45.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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16
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Işık M, Unver MY, Tanyeli C. Modularly Evolved 2-AminoDMAP/Squaramides as Highly Active Bifunctional Organocatalysts in Michael Addition. J Org Chem 2015; 80:828-35. [DOI: 10.1021/jo5022597] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Murat Işık
- Department
of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
- Department
of Metallurgical and Materials Engineering, Bingöl University, 12400 Bingöl, Turkey
| | - M. Yagiz Unver
- Department
of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
| | - Cihangir Tanyeli
- Department
of Chemistry, Middle East Technical University, 06800 Ankara, Turkey
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17
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Eftekhari-Sis B, Zirak M. Chemistry of α-oxoesters: a powerful tool for the synthesis of heterocycles. Chem Rev 2014; 115:151-264. [PMID: 25423283 DOI: 10.1021/cr5004216] [Citation(s) in RCA: 95] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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18
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Organocatalytic asymmetric cascade Michael/hemiketalization/retro-aldol reaction of 3-acetyl-oxindole with β,γ-unsaturated ketoesters catalyzed by bifunctional amino-squaramides. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.09.040] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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19
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Zhao BL, Liu L, Du DM. Chiral Squaramide-Catalyzed Sulfa-Michael/Aldol Cascade for the Asymmetric Synthesis of Spirocyclic Tetrahydrothiophene Chromanone Derivatives. European J Org Chem 2014. [DOI: 10.1002/ejoc.201402889] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
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20
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Pyrrolidine-diaminomethylenemalononitrile organocatalyst for Michael additions of carbonyl compounds to nitroalkenes under solvent-free conditions. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.03.042] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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21
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Bera K, Namboothiri INN. Enantioselective synthesis of γ-tetrasubstituted nitrosulfonyl carboxylates and amides vial-tert-leucine-derived-squaramide catalyzed conjugate addition of nitrosulfones to acrylates and acrylamides. Org Biomol Chem 2014; 12:6425-31. [DOI: 10.1039/c4ob00344f] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A t-leucine-derived squaramide catalyzed reaction of α-nitrosulfones with acrylates/acrylamides provides γ-tetrasubstituted γ-nitro-γ-sulfonyl carboxylates/amides in excellent yield and enantioselectivity.
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Affiliation(s)
- Kalisankar Bera
- Department of Chemistry
- Indian Institute of Technology
- Bombay, India
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22
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Zhao MX, Ji FH, Wei DK, Shi M. Chiral squaramides catalyzed diastereo- and enantioselective Michael addition of α-substituted isocyanoacetates to N-aryl maleimides. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.09.084] [Citation(s) in RCA: 26] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
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23
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Yang W, He H, Gao Y, Du D. Organocatalytic Enantioselective Cascade Aza‐Michael/Michael Addition for the Synthesis of Highly Functionalized Tetrahydroquinolines and Tetrahydrochromanoquinolines. Adv Synth Catal 2013. [DOI: 10.1002/adsc.201300670] [Citation(s) in RCA: 71] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Wen Yang
- School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, People's Republic of China, Fax: (+86)‐010‐68914985
| | - Hai‐Xiao He
- School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, People's Republic of China, Fax: (+86)‐010‐68914985
| | - Yu Gao
- School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, People's Republic of China, Fax: (+86)‐010‐68914985
| | - Da‐Ming Du
- School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, People's Republic of China, Fax: (+86)‐010‐68914985
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24
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Lu T, Wheeler SE. Origin of the Superior Performance of (Thio)Squaramides over (Thio)Ureas in Organocatalysis. Chemistry 2013; 19:15141-7. [DOI: 10.1002/chem.201302990] [Citation(s) in RCA: 46] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2013] [Revised: 09/13/2013] [Indexed: 11/06/2022]
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25
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Asymmetric conjugate addition of aldehydes to vinyl sulfone using a diaminomethylenemalononitrile organocatalyst. Tetrahedron Lett 2013. [DOI: 10.1016/j.tetlet.2013.06.141] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/19/2022]
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26
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Desimoni G, Faita G, Quadrelli P. Substituted (E)-2-Oxo-3-butenoates: Reagents for Every Enantioselectively-Catalyzed Reaction. Chem Rev 2013; 113:5924-88. [DOI: 10.1021/cr4000732] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Giovanni Desimoni
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Giuseppe Faita
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
| | - Paolo Quadrelli
- Department of Chemistry, University of Pavia, Viale Taramelli 10, 27100 Pavia, Italy
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27
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Yang W, Yang Y, Du DM. Squaramide–Tertiary Amine Catalyzed Asymmetric Cascade Sulfa-Michael/Michael Addition via Dynamic Kinetic Resolution: Access to Highly Functionalized Chromans with Three Contiguous Stereocenters. Org Lett 2013; 15:1190-3. [DOI: 10.1021/ol400025a] [Citation(s) in RCA: 85] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Affiliation(s)
- Wen Yang
- School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Yi Yang
- School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
| | - Da-Ming Du
- School of Chemical Engineering and Environment, Beijing Institute of Technology, Beijing 100081, People’s Republic of China
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28
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Duan J, Cao F, Wang X, Ma C. A tertiary amine catalyzed carbocyclization sequence to furnish spirocyclo hexene systems having vicinal quaternary stereocenters. Chem Commun (Camb) 2013; 49:1124-6. [DOI: 10.1039/c2cc37297e] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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29
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Baran R, Veverková E, Škvorcová A, Šebesta R. Enantioselective Michael addition of 1,3-dicarbonyl compounds to a nitroalkene catalyzed by chiral squaramides – a key step in the synthesis of pregabalin. Org Biomol Chem 2013; 11:7705-11. [DOI: 10.1039/c3ob41709c] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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30
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Liu L, Zhang D, Zhang P, Jiang X, Wang R. Catalytic highly asymmetric 1,5(6)-selective cyclization reaction of α-hydroxyimino cyclic ketones: direct approach to ring-fused hydroxyimino dihydropyrans. Org Biomol Chem 2013; 11:5222-5. [DOI: 10.1039/c3ob41001c] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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31
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Dong Z, Qiu G, Zhou HB, Dong C. Chiral squaramide as multiple H-bond donor organocatalysts for the asymmetric Michael addition of 1,3-dicarbonyl compounds to nitroolefins. ACTA ACUST UNITED AC 2012. [DOI: 10.1016/j.tetasy.2012.10.016] [Citation(s) in RCA: 28] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
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32
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Albrecht Ł, Dickmeiss G, Weise CF, Rodríguez-Escrich C, Jørgensen KA. Dienamine-Mediated Inverse-Electron-Demand Hetero-Diels-Alder Reaction by Using an Enantioselective H-Bond-Directing Strategy. Angew Chem Int Ed Engl 2012; 51:13109-13. [DOI: 10.1002/anie.201207122] [Citation(s) in RCA: 111] [Impact Index Per Article: 9.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2012] [Indexed: 11/10/2022]
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33
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Albrecht Ł, Dickmeiss G, Weise CF, Rodríguez-Escrich C, Jørgensen KA. Dienamine-Mediated Inverse-Electron-Demand Hetero-Diels-Alder Reaction by Using an Enantioselective H-Bond-Directing Strategy. Angew Chem Int Ed Engl 2012. [DOI: 10.1002/ange.201207122] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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34
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Zhu JL, Zhang Y, Liu C, Zheng AM, Wang W. Insights into the Dual Activation Mechanism Involving Bifunctional Cinchona Alkaloid Thiourea Organocatalysts: An NMR and DFT Study. J Org Chem 2012; 77:9813-25. [DOI: 10.1021/jo302133n] [Citation(s) in RCA: 130] [Impact Index Per Article: 10.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Affiliation(s)
- Jun-Ling Zhu
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Yong Zhang
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - Chong Liu
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
| | - An-Min Zheng
- State Key Laboratory of Magnetic
Resonance and Atomic and Molecular Physics, Wuhan Center for Magnetic
Resonance, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences, Wuhan, Hubei 430071, China
| | - Wei Wang
- State Key Laboratory of Applied
Organic Chemistry, College of Chemistry and Chemical Engineering, Lanzhou University, Lanzhou, Gansu 730000, China
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35
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Zhao MX, Wei DK, Ji FH, Zhao XL, Shi M. Asymmetric Formal [3+2] Cycloaddition Reaction of α-Aryl Isocyanoesters withN-Aryl Maleimides by Bifunctional Cinchona Alkaloids-Based Squaramide/AgSbF6Cooperative Catalysis. Chem Asian J 2012; 7:2777-81. [DOI: 10.1002/asia.201200686] [Citation(s) in RCA: 44] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2012] [Revised: 08/16/2012] [Indexed: 01/14/2023]
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