1
|
Huang SH, Chen IT, Han JL. Asymmetric (3 + 3) and (4 + 2) Annulation Reactions of 2,3-Dioxopyrrolidines with 3-Alkylidene Oxindoles to Construct Diverse Chiral Heterocyclic Frameworks. J Org Chem 2024. [PMID: 38850251 DOI: 10.1021/acs.joc.4c00933] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/10/2024]
Abstract
Two substrate-controlled regiodivergent annulation protocols for 2,3-dioxopyrrolidines with 3-alkylidene oxindoles have been developed, which furnished a series of fused dihydropyrrolidone derivatives in high yields with excellent stereoselectivities. Plausible mechanistic pathways for both annulation reactions are proposed that [3 + 3] annulation reaction involves vinylogous Michael addition followed by intramolecular aldol cyclization, while [4 + 2] annulation reaction occurs through a vinylogous Michael addition and a subsequent intramolecular oxa-Michael cyclization.
Collapse
Affiliation(s)
- Shi-Hang Huang
- Department of Chemistry, National Chung Hsing University, Taichung City 40227, Taiwan, R.O.C
| | - I-Ting Chen
- Department of Chemistry, National Chung Hsing University, Taichung City 40227, Taiwan, R.O.C
| | - Jeng-Liang Han
- Department of Chemistry, National Chung Hsing University, Taichung City 40227, Taiwan, R.O.C
| |
Collapse
|
2
|
Manna A, Rohilla S, Singh VK. Enantioselective Synthesis of Thiazolopyran Derivatives via a Direct Vinylogous Michael- oxa-Michael Sequence. Org Lett 2024; 26:280-285. [PMID: 38127653 DOI: 10.1021/acs.orglett.3c03971] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2023]
Abstract
An efficient diastereo- and enantioselective direct vinylogous Michael-oxa-Michael sequence between 5-alkenyl thiazolones and isopropylidene oxindoles has been developed. The reaction is catalyzed by a bifunctional squaramide catalyst that allows to access a wide range of densely substituted thiazolopyran derivatives containing a quaternary stereocenter. This protocol is flexible toward different sterically and electronically tuned substrates and is amenable to gram-scale synthesis and several synthetic transformations.
Collapse
Affiliation(s)
- Abhijit Manna
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Shweta Rohilla
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| | - Vinod K Singh
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, Uttar Pradesh 208 016, India
| |
Collapse
|
3
|
Chen X, Zhao Y, Huang C, Zhao Z, Zhao W, Li SW. Catalytic asymmetric conjugate addition of coumarins to unsaturated ketones catalyzed by a chiral-at-metal Rh(III) complex. Chem Commun (Camb) 2023; 60:236-239. [PMID: 38054345 DOI: 10.1039/d3cc04726a] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/07/2023]
Abstract
The first catalytic asymmetric vinylogous Michael addition of coumarins to unsaturated ketones catalyzed by chiral rhodium catalysts has been established. This strategy allowed the synthesis of a variety of highly enantioenriched compounds containing coumarin skeletons in 41-99% yields and 84-99% ee. The developed reaction enriches the chemistry of catalytic asymmetric vinylogous Michael additions of 3-cyano-4-methylcoumarins. Furthermore, the protocol showed obvious advantages in reaction enantioselectivity. When the chiral rhodium catalyst was reduced to 0.06 mol%, a Gram-level reaction was still achieved to provide the desired products with 99% ee.
Collapse
Affiliation(s)
- Xiangjie Chen
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China.
| | - Yujie Zhao
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China.
| | - Cheng Huang
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China.
| | - Zhifei Zhao
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China.
| | - Weiwei Zhao
- College of Life Science & Technology, Tarim University, Alar, 843300, Xinjiang, People's Republic of China.
| | - Shi-Wu Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Xinjiang Uygur Autonomous Region 832000, People's Republic of China.
| |
Collapse
|
4
|
Sharma PR, Malik A, Bandaru S, Vashisth K, Rana NK, Sharma RK. Experimental and computational studies on the Cinchona anchored calixarene catalysed asymmetric Michael addition reaction. Chem Commun (Camb) 2022; 58:7249-7252. [PMID: 35670109 DOI: 10.1039/d2cc02422e] [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
Lower-rim Cinchona anchored calix[4]arene cationic catalysts were developed for asymmetric Michael addition of acetylacetone to β-nitrostyrenes. The desired Michael adducts were formed with high yields and enantioselectivities. Density functional theory investigations throw light on the catalyst-substrate interaction and the reaction mechanism.
Collapse
Affiliation(s)
- Pragati R Sharma
- Sustainable Materials and Catalysis Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Apoorva Malik
- Sustainable Materials and Catalysis Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Sateesh Bandaru
- College of Materials and Environmental Engineering, Hangzhou Dianzi University, Hangzhou-310018, China
| | - Kanika Vashisth
- Sustainable Materials and Catalysis Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India. .,The Department of Chemistry & Biochemistry, Baylor University, Baylor Science Building, Baylor Sciences Bldg. D.208, One Bear Place #97348, Waco, TX 76798
| | - Nirmal K Rana
- Sustainable Materials and Catalysis Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| | - Rakesh K Sharma
- Sustainable Materials and Catalysis Research Laboratory (SMCRL), Department of Chemistry, Indian Institute of Technology Jodhpur, Jodhpur-342037, India.
| |
Collapse
|
5
|
Chen X, An Y, Du G, Zhao Y, He L, Zhao J, Li SW. Catalytic Asymmetric Conjugate Addition of 2-Methyl-3,5-dinitrobenzoates to Unsaturated Ketones. J Org Chem 2022; 87:5497-5509. [PMID: 35420811 DOI: 10.1021/acs.joc.1c02757] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Asymmetric catalytic vinylogous Michael addition of 2-methyl-3,5-dinitrobenzoates to unsaturated ketones catalyzed by chiral rhodium catalysts has been established. This strategy allowed the synthesis of a variety of optically pure compounds containing imidazole and 3,5-dinitrobenzene skeletons in 64-98% yields with 88-98% ee. The developed reaction not only represents highly asymmetric catalytic enantioselective vinylogous Michael addition employing 2-methyl-3,5-dinitrobenzoates as a building block but also enriches the chemistry of catalytic asymmetric vinylogous Michael addition of 2-methyl-3,5-dinitrobenzoates. Furthermore, the protocol showed obvious advantages in reaction activity and enantioselectivity. When the chiral rhodium catalyst was reduced to 0.06 mol %, the gram-level reaction was still achieved to provide the desired product with 95% ee.
Collapse
Affiliation(s)
- Xiangjie Chen
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Yi An
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Guangfen Du
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Yujie Zhao
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Lin He
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Jixing Zhao
- Analysis and Testing Center of Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| | - Shi-Wu Li
- Key Laboratory for Green Processing of Chemical Engineering of Xinjiang Bingtuan, School of Chemistry and Chemical Engineering, Shihezi University, Shihezi, Xinjiang Uygur Autonomous Region 832000, People's Republic of China
| |
Collapse
|
6
|
Joshi H, Singh VK. Cinchona Derivatives as Bifunctional H‐bonding Organocatalysts in Asymmetric Vinylogous Conjugate Addition Reactions. ASIAN J ORG CHEM 2022. [DOI: 10.1002/ajoc.202100053] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Harshit Joshi
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur-208016 Uttar Pradesh India
| | - Vinod K. Singh
- Department of Chemistry Indian Institute of Technology Kanpur Kanpur-208016 Uttar Pradesh India
| |
Collapse
|
7
|
Weng Z, Zhou Y, Yue X, Jiang F, Guo W. Regioselective α-addition of vinylogous α-ketoester enolate in organocatalytic asymmetric Michael reactions: enantioselective synthesis of Rauhut–Currier type products. RSC Adv 2022; 12:32056-32060. [DOI: 10.1039/d2ra06416b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2022] [Accepted: 10/27/2022] [Indexed: 11/11/2022] Open
Abstract
Catalytic asymmetric α-regioselective Michael additions of vinylogous α-ketoester enolate are described herein.
Collapse
Affiliation(s)
- Zhibing Weng
- School of Chemical and Pharmaceutical Engineering, Changzhou Vocational Institute of Engineering, Changzhou, China
- School of Pharmaceutical Sciences, Nanjing Tech University, Nanjing, China
| | - Ying Zhou
- School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Xin Yue
- School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Feng Jiang
- School of Petrochemical Engineering, Changzhou University, Changzhou, China
| | - Wengang Guo
- School of Petrochemical Engineering, Changzhou University, Changzhou, China
| |
Collapse
|
8
|
Shim JH, Park SJ, Ahn BK, Lee JY, Kim HS, Ha DC. Enantioselective Thiolysis and Aminolysis of Cyclic Anhydrides Using a Chiral Diamine-Derived Thiourea Catalyst. ACS OMEGA 2021; 6:34501-34511. [PMID: 34963935 PMCID: PMC8697410 DOI: 10.1021/acsomega.1c04741] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 08/30/2021] [Accepted: 11/16/2021] [Indexed: 06/14/2023]
Abstract
Catalytic desymmetrization of cyclic anhydrides has been widely investigated in the field of organocatalysis. Using this approach, many stereocenters can be established in a single, symmetry-breaking transformation. Herein, a thiourea organocatalyst was prepared in a single step from a chiral diamine, (R,R)-1,2-diphenylethylenediamine, and used for the desymmetrization of various cyclic anhydrides through double hydrogen-bonding activation. The asymmetric ring-opening reaction of the cyclic anhydride proceeded via the enantioselective addition reaction catalyzed by diamine thiourea. Thiolysis afforded the desired products in the yields of 86-98% and enantioselectivities of 60-94%, while aminolysis afforded the yields of 90-94% and enantioselectivities of 90-95%.
Collapse
Affiliation(s)
- Jae Ho Shim
- Department
of Anatomy, Korea University College of
Medicine, 46, Gaeunsa 2-gil, Seongbuk-gu, Seoul 02842, Republic of Korea
| | - Sung Joo Park
- Department
of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
| | - Byung Kook Ahn
- Department
of Anatomy, Korea University College of
Medicine, 46, Gaeunsa 2-gil, Seongbuk-gu, Seoul 02842, Republic of Korea
| | - Ji Yeon Lee
- Department
of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
| | - Hyeon Soo Kim
- Department
of Anatomy, Korea University College of
Medicine, 46, Gaeunsa 2-gil, Seongbuk-gu, Seoul 02842, Republic of Korea
| | - Deok-Chan Ha
- Department
of Chemistry, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
| |
Collapse
|
9
|
He ZL, Chen P, Chen ZC, Du W, Chen YC. Construction of Hydrodibenzo[ b, d]furan Frameworks from Morita-Baylis-Hillman Carbonates of Isatins and o-Hydroxy Enones via Palladium and Brønsted Base Relay Catalysis. Org Lett 2021; 24:100-104. [PMID: 34889095 DOI: 10.1021/acs.orglett.1c03689] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
A cascade assembly between isatin-derived Morita-Baylis-Hillman carbonates and o-hydroxybenzylideneacetones has been developed under the relay catalysis of Pd(PPh3)4 and DBU, affording a spectrum of 1,2,3,4-tetrahydrodibenzo[b,d]furan architectures incorporating a spirooxindole motif in moderate to good yields with excellent diastereoselectivity. The fused indole analogues were similarly furnished by employing the benzylideneacetones having an o-TsNH group.
Collapse
Affiliation(s)
- Ze-Liang He
- 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
| | - Peng 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
| | - Zhi-Chao 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
| | - 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
| |
Collapse
|
10
|
Organocatalytic Asymmetric Michael Addition in Aqueous Media by a Hydrogen-Bonding Catalyst and Application for Inhibitors of GABAB Receptor. Catalysts 2021. [DOI: 10.3390/catal11091134] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
Catalysts based on (R, R)-1,2-diphenylethylenediamine are, as chiral organic catalysts, applied to the asymmetric Michael addition to α, β-unsaturated nitroalkenes under neutral conditions. The role of an aqueous medium for organic catalytic activity can be reversed concerning hydrophilic-hydrophobic function depending on the reaction conditions. In this study, to provide an environmentally friendly system, the thiourea-based catalyst substituted with 3,5-(CF3)2-Ph was used in water solvents. The hydrophobic effect of the substituent provided fast reaction, high chemical yield, and mirror-image selectivity. This reaction allowed the preparation of GABAB agonists in an optically pure manner. Additionally, GABA (γ-aminobutyric acid) analogs such as baclofen and phenibut were synthesized as R-type S-type with high optical purity.
Collapse
|
11
|
Oiarbide M, Palomo C. Extended Enolates: Versatile Intermediates for Asymmetric C-H Functionalization via Noncovalent Catalysis. Chemistry 2021; 27:10226-10246. [PMID: 33961323 PMCID: PMC8361983 DOI: 10.1002/chem.202100756] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Indexed: 12/22/2022]
Abstract
Catalyst-controlled functionalization of unmodified carbonyl compounds is a relevant operation in organic synthesis, especially when high levels of site- and stereoselectivity can be attained. This objective is now within reach for some subsets of enolizable substrates using various types of activation mechanisms. Recent contributions to this area include enantioselective transformations that proceed via transiently generated noncovalent di(tri)enolate-catalyst coordination species. While relatively easier to form than simple enolate congeners, di(tri)enolates are ambifunctional in nature and so control of the reaction regioselectivity becomes an issue. This Minireview discusses in some detail this and other problems, and how noncovalent activation approaches based on metallic and metal free catalysts have been developed to advance the field.
Collapse
Affiliation(s)
- Mikel Oiarbide
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHUManuel Lardizabal 320018San SebastiánSpain
| | - Claudio Palomo
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHUManuel Lardizabal 320018San SebastiánSpain
| |
Collapse
|
12
|
Tian Y, Shang Y, Su W. DBU‐Catalyzed Regioselective
α
‐Alkylation of Enones Using the Vinylogous Strategy. ASIAN J ORG CHEM 2021. [DOI: 10.1002/ajoc.202100293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yawei Tian
- College of Chemistry Fuzhou University 2 Xueyuan Road Fuzhou Fujian 350108 P. R. China
- State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Yangqiao West Road 155 Fuzhou Fujian 350002 P. R. China
| | - Yaping Shang
- State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Yangqiao West Road 155 Fuzhou Fujian 350002 P. R. China
| | - Weiping Su
- College of Chemistry Fuzhou University 2 Xueyuan Road Fuzhou Fujian 350108 P. R. China
- State Key Laboratory of Structural Chemistry Center for Excellence in Molecular Synthesis Fujian Institute of Research on the Structure of Matter Chinese Academy of Sciences Yangqiao West Road 155 Fuzhou Fujian 350002 P. R. China
| |
Collapse
|
13
|
Siva Sankara C, Namboothiri INN. Regio- and Stereoselective Synthesis of Dispiro-bisoxindoles via [3+2] Annulation Involving Nitroisatylidene as a Vinylogous Michael Donor. Org Lett 2021; 23:4618-4623. [PMID: 34038641 DOI: 10.1021/acs.orglett.1c01360] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
A cascade [3+2] annulation, involving a γ-selective vinylogous Michael addition of nitroalkylideneoxindoles to various electron deficient alkenes followed by an intramolecular Michael addition, provides access to dispiro-bis-oxindoles and spiro-oxindoles. Up to four contiguous chiral centers, including two quaternary spirocenters, are generated in this high-yield regio- and diastereoselective transformation that also provides a convenient entry into conformationally constrained γ-amino acid derivatives.
Collapse
|
14
|
Kumar K, Singh B, Hore S, Singh RP. Catalytic enantioselective synthesis of chiral 4-hydroxy 4′-substituted pyrazolones by the vinylogous aldol reaction of pyrazole-4,5-diones with 3-alkylidene-2-oxindoles. NEW J CHEM 2021. [DOI: 10.1039/d0nj05886f] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Here, a bifunctional quinine-derived benzamide catalyzed direct enantioselective vinylogous aldol reaction between 3-alkylidene-2-oxindoles and pyrazole-4,5-diones has been developed.
Collapse
Affiliation(s)
- Krishna Kumar
- Department of Chemistry
- Indian Institute of Technology
- Delhi, Hauz Khas
- New Delhi-110016
- India
| | - Bhuvnesh Singh
- Department of Chemistry
- Indian Institute of Technology
- Delhi, Hauz Khas
- New Delhi-110016
- India
| | - Soumyadip Hore
- Department of Chemistry
- Indian Institute of Technology
- Delhi, Hauz Khas
- New Delhi-110016
- India
| | - Ravi P Singh
- Department of Chemistry
- Indian Institute of Technology
- Delhi, Hauz Khas
- New Delhi-110016
- India
| |
Collapse
|
15
|
Yao Z, Liu X, Li Z, Xu S, Xu L, Liu X. Dienolate‐Mediated, Regioselective C2‐Polarity Reversal of Chromone‐Based Reactants and Their Application in Nucleophilic Strategies. Adv Synth Catal 2020. [DOI: 10.1002/adsc.202000942] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
Affiliation(s)
- Zhen Yao
- Department of Chemistry Renmin University of China Beijing 100872 People's Republic of China
| | - Xiong‐Wei Liu
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine Guizhou University Guiyang 550025 People's Republic of China
| | - Zheng Li
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine Guizhou University Guiyang 550025 People's Republic of China
| | - Sheng‐Wen Xu
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine Guizhou University Guiyang 550025 People's Republic of China
| | - Lijin Xu
- Department of Chemistry Renmin University of China Beijing 100872 People's Republic of China
| | - Xiong‐Li Liu
- Guizhou Engineering Center for Innovative Traditional Chinese Medicine and Ethnic Medicine Guizhou University Guiyang 550025 People's Republic of China
| |
Collapse
|
16
|
Bifunctional Cinchona Alkaloid Catalyzed Vinylogous Michael Reaction of 3–Alkylideneoxindole with 4‐Oxo‐enoates: A Route to Chiral γ‐Keto Alkylideneoxindole Esters. ASIAN J ORG CHEM 2020. [DOI: 10.1002/ajoc.202000227] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
|
17
|
Jaiswal MK, Kumar R, Singh S, Jain S, Vanka K, Singh RP. The Vinylogous Michael Addition of 3‐Alkylidene‐2‐oxindoles to β,γ‐Unsaturated α‐Keto Esters by Bifunctional Cinchona Alkaloids. European J Org Chem 2020. [DOI: 10.1002/ejoc.202000835] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Affiliation(s)
- Manish K. Jaiswal
- Department of Chemistry Indian Institute of Technology‐Delhi Hauz Khas 110016 New Delhi India
| | - Rajesh Kumar
- Department of Chemistry Indian Institute of Technology‐Delhi Hauz Khas 110016 New Delhi India
| | - Sanjay Singh
- Department of Chemistry Indian Institute of Technology‐Delhi Hauz Khas 110016 New Delhi India
| | - Shailija Jain
- Physical and Materials Chemistry Division National Chemical Laboratory Dr. Homi Bhabha Road 411008 Pune India
| | - Kumar Vanka
- Physical and Materials Chemistry Division National Chemical Laboratory Dr. Homi Bhabha Road 411008 Pune India
| | - Ravi P. Singh
- Department of Chemistry Indian Institute of Technology‐Delhi Hauz Khas 110016 New Delhi India
| |
Collapse
|
18
|
Shim JH, Lee MJ, Lee MH, Kim BS, Ha DC. Enantioselective organocatalytic Michael reactions using chiral ( R, R)-1,2-diphenylethylenediamine-derived thioureas. RSC Adv 2020; 10:31808-31814. [PMID: 35518159 PMCID: PMC9056493 DOI: 10.1039/d0ra03550e] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2020] [Accepted: 08/20/2020] [Indexed: 11/21/2022] Open
Abstract
Although the Michael addition is a very well-known and widely applied reaction, cost-effective, metal-free, and readily prepared organic catalysts remain rare. A chiral, bifunctional, (R,R)-1,2-diphenylethylenediamine-derived thiourea organic catalyst was developed and applied to asymmetric Michael additions of nitroalkenes under neutral conditions. Generally, fluorine-substituted thiourea catalysts exhibited high chemical yields and enantioselectivities under neutral conditions. The mild reactions were tolerant of many functional groups and afforded good-to-excellent yields, as well as high diastereo- and enantioselectivities for the Michael adducts. The utility of the transformation was demonstrated by the synthesis of a bioactive compound, (R)-Phenibut.
Collapse
Affiliation(s)
- Jae Ho Shim
- Laboratory of Organic Synthesis, Department of Chemistry, Research Institute for Natural Sciences, Korea University Seoul 136-713 Korea
| | - Min Ji Lee
- Laboratory of Organic Synthesis, Department of Chemistry, Research Institute for Natural Sciences, Korea University Seoul 136-713 Korea
| | - Min Ho Lee
- Laboratory of Organic Synthesis, Department of Chemistry, Research Institute for Natural Sciences, Korea University Seoul 136-713 Korea
| | - Byeong-Seon Kim
- Department of Chemistry Education, Research Institute of Natural Science, Gyeongsang National University Jinju 52828 Korea
| | - Deok-Chan Ha
- Laboratory of Organic Synthesis, Department of Chemistry, Research Institute for Natural Sciences, Korea University Seoul 136-713 Korea
| |
Collapse
|
19
|
Kang T, Hou L, Ruan S, Cao W, Liu X, Feng X. Lewis acid-catalyzed asymmetric reactions of β,γ-unsaturated 2-acyl imidazoles. Nat Commun 2020; 11:3869. [PMID: 32747706 PMCID: PMC7398931 DOI: 10.1038/s41467-020-17681-9] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/20/2020] [Accepted: 07/06/2020] [Indexed: 11/09/2022] Open
Abstract
The investigation of diverse reactivity of β,γ-unsaturated carbonyl compounds is of great value in asymmetric catalytic synthesis. Numerous enantioselective transformations have been well developed with β,γ-unsaturated carbonyl compounds as nucleophiles, however, few example were realized by utilizing them as not only nucleophiles but also electrophiles under a same catalytic system. Here we report a regioselective catalytic asymmetric tandem isomerization/α-Michael addition of β,γ-unsaturated 2-acyl imidazoles in the presence of chiral N,N′-dioxide metal complexes, delivering a broad range of optically pure 1,5-dicarbonyl compounds with two vicinal tertiary carbon stereocenters in up to >99% ee under mild conditions. Meanwhile, stereodivergent synthesis is disclosed to yield all four stereoisomers of products. Control experiments suggest an isomerization process involved in the reaction and give an insight into the role of NEt3. In addition, Mannich reaction and sulfur-Michael addition of β,γ-unsaturated 2-acyl imidazoles proceed smoothly as well under the same catalytic system. The investigation of reactivity of β,γ-unsaturated carbonyl compounds is of great synthetic value, especially in asymmetric transformations. Here, the authors report a catalytic asymmetric tandem isomerization/α-Michael addition of β,γ-unsaturated 2-acyl imidazoles in presence of chiral N,N′-dioxide metal catalysts.
Collapse
Affiliation(s)
- Tengfei Kang
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Liuzhen Hou
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Sai Ruan
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Weidi Cao
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China
| | - Xiaohua Liu
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology, Ministry of Education, College of Chemistry, Sichuan University, Chengdu, 610064, China.
| |
Collapse
|
20
|
Organocatalytic Asymmetric Michael Addition of Ketones to α, β-Unsaturated Nitro Compounds. Catalysts 2020. [DOI: 10.3390/catal10060618] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
An organic catalyst “(R, R)-1,2-diphenylethylenediamine(DPEN) derivative’’ was devel-oped as a chiral bifunctional organocatalyst and applied for asymmetric Michael additions of aromatic ketones to trans-β-nitroalkene compounds under neutral conditions. The isopropyl-subs-tituted thiourea catalyst in neutral condition provides high chemical yield and enantioselectivities (ee) (up to 96% yield, 98% ee).
Collapse
|
21
|
Curti C, Battistini L, Sartori A, Zanardi F. New Developments of the Principle of Vinylogy as Applied to π-Extended Enolate-Type Donor Systems. Chem Rev 2020; 120:2448-2612. [PMID: 32040305 PMCID: PMC7993750 DOI: 10.1021/acs.chemrev.9b00481] [Citation(s) in RCA: 99] [Impact Index Per Article: 24.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/31/2019] [Indexed: 12/19/2022]
Abstract
The principle of vinylogy states that the electronic effects of a functional group in a molecule are possibly transmitted to a distal position through interposed conjugated multiple bonds. As an emblematic case, the nucleophilic character of a π-extended enolate-type chain system may be relayed from the legitimate α-site to the vinylogous γ, ε, ..., ω remote carbon sites along the chain, provided that suitable HOMO-raising strategies are adopted to transform the unsaturated pronucleophilic precursors into the reactive polyenolate species. On the other hand, when "unnatural" carbonyl ipso-sites are activated as nucleophiles (umpolung), vinylogation extends the nucleophilic character to "unnatural" β, δ, ... remote sites. Merging the principle of vinylogy with activation modalities and concepts such as iminium ion/enamine organocatalysis, NHC-organocatalysis, cooperative organo/metal catalysis, bifunctional organocatalysis, dicyanoalkylidene activation, and organocascade reactions represents an impressive step forward for all vinylogous transformations. This review article celebrates this evolutionary progress, by collecting, comparing, and critically describing the achievements made over the nine year period 2010-2018, in the generation of vinylogous enolate-type donor substrates and their use in chemical synthesis.
Collapse
Affiliation(s)
| | | | | | - Franca Zanardi
- Dipartimento di Scienze degli
Alimenti e del Farmaco, Università
di Parma, Parco Area delle Scienze 27A, 43124 Parma, Italy
| |
Collapse
|
22
|
Steppeler F, Iwan D, Wojaczyńska E, Wojaczyński J. Chiral Thioureas-Preparation and Significance in Asymmetric Synthesis and Medicinal Chemistry. Molecules 2020; 25:E401. [PMID: 31963671 PMCID: PMC7024223 DOI: 10.3390/molecules25020401] [Citation(s) in RCA: 31] [Impact Index Per Article: 7.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/29/2019] [Revised: 01/14/2020] [Accepted: 01/16/2020] [Indexed: 01/23/2023] Open
Abstract
For almost 20 years, thioureas have been experiencing a renaissance of interest with the emerged development of asymmetric organocatalysts. Due to their relatively high acidity and strong hydrogen bond donor capability, they differ significantly from ureas and offer, appropriately modified, great potential as organocatalysts, chelators, drug candidates, etc. The review focuses on the family of chiral thioureas, presenting an overview of the current state of knowledge on their synthesis and selected applications in stereoselective synthesis and drug development.
Collapse
Affiliation(s)
- Franz Steppeler
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland; (F.S.); (D.I.)
| | - Dominika Iwan
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland; (F.S.); (D.I.)
| | - Elżbieta Wojaczyńska
- Faculty of Chemistry, Wrocław University of Science and Technology, Wybrzeże Wyspiańskiego 27, 50 370 Wrocław, Poland; (F.S.); (D.I.)
| | - Jacek Wojaczyński
- Faculty of Chemistry, University of Wrocław, 14 F. Joliot-Curie St., 50 383 Wrocław, Poland;
| |
Collapse
|
23
|
Urruzuno I, Mugica O, Zanella G, Vera S, Gómez‐Bengoa E, Oiarbide M, Palomo C. α‐Branched Ketone Dienolates: Base‐Catalysed Generation and Regio‐ and Enantioselective Addition Reactions. Chemistry 2019; 25:9701-9709. [DOI: 10.1002/chem.201901694] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2019] [Indexed: 11/06/2022]
Affiliation(s)
- Iñaki Urruzuno
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Odei Mugica
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Giovanna Zanella
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Silvia Vera
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Enrique Gómez‐Bengoa
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica IUniversidad del País Vasco UPV/EHU Manuel Lardizabal 3 20018 San Sebastián Spain
| |
Collapse
|
24
|
Li SW, Du Y, Kang Q. A chiral-at-metal asymmetric catalyzed vinylogous Michael addition of ortho-methyl aromatic nitro compounds for isoxazole derivative synthesis. Org Chem Front 2019. [DOI: 10.1039/c9qo00676a] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
A chiral-at-metal rhodium(iii) complex catalyzed asymmetric vinylogous Michael addition of 5-methyl 4-nitroisoxazoles with α,β-unsaturated 2-acyl imidazoles has been developed, delivering the corresponding adducts with up to 96% yield and 97% ee.
Collapse
Affiliation(s)
- Shi-Wu Li
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Yu Du
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| | - Qiang Kang
- Key Laboratory of Coal to Ethylene Glycol and Its Related Technology
- Center for Excellence in Molecular Synthesis
- Fujian Institute of Research on the Structure of Matter
- Chinese Academy of Sciences
- Fuzhou
| |
Collapse
|
25
|
Abstract
Chiral ionic liquid crystals based on the S-methyl-N,N′-α-methylarylthiouronium cation have been prepared and studied.
Collapse
|
26
|
Yang SM, Karanam P, Wang M, Jang YJ, Yeh YS, Tseng PY, Ganapuram MR, Liou YC, Lin W. A vinylogous Michael addition-triggered quadruple cascade reaction for the enantioselective generation of multiple quaternary stereocenters. Chem Commun (Camb) 2019; 55:1398-1401. [DOI: 10.1039/c8cc09219b] [Citation(s) in RCA: 20] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
An efficient organocatalytic vinylogous Michael addition-triggered quadruple cascade reaction resulting in fused spiroxindoles bearing multiple quaternary stereocenters is demonstrated from β-trifluoroacetylarylidene indanediones and 3-alkylideneoxindoles.
Collapse
Affiliation(s)
- Shu-Mei Yang
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
| | - Praneeth Karanam
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
| | - Min Wang
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
| | - Yeong-Jiunn Jang
- Chinese Medicine Research and Development Center
- China Medical University Hospital
- Taichung 40447
- Republic of China
| | - Yu-Sheng Yeh
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
| | - Ping-Yao Tseng
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
| | | | - Yan-Cheng Liou
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
| | - Wenwei Lin
- Department of Chemistry
- National Taiwan Normal University
- Taipei 11677
- Republic of China
| |
Collapse
|
27
|
Crotti S, Belletti G, Di Iorio N, Marotta E, Mazzanti A, Righi P, Bencivenni G. Asymmetric vinylogous aldol addition of alkylidene oxindoles on trifluoromethyl-α,β-unsaturated ketones. RSC Adv 2018; 8:33451-33458. [PMID: 35548158 PMCID: PMC9086480 DOI: 10.1039/c8ra06615a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2018] [Accepted: 09/18/2018] [Indexed: 12/21/2022] Open
Abstract
A novel vinylogous aldol addition of alkylidene oxindole with 1-trifluoromethyl-3-alkylidene-propan-2-ones is presented. The reaction, catalyzed by a bifunctional tertiary amine, provides an efficient application of the vinylogous reactivity of oxindoles for the preparation of enantioenriched trifluoromethylated allylic alcohols.
Collapse
Affiliation(s)
- Simone Crotti
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna Viale del Risorgimento 4 40136-Bologna Italy
| | - Giada Belletti
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna Viale del Risorgimento 4 40136-Bologna Italy
| | - Nicola Di Iorio
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna Viale del Risorgimento 4 40136-Bologna Italy
| | - Emanuela Marotta
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna Viale del Risorgimento 4 40136-Bologna Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna Viale del Risorgimento 4 40136-Bologna Italy
| | - Paolo Righi
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna Viale del Risorgimento 4 40136-Bologna Italy
| | - Giorgio Bencivenni
- Department of Industrial Chemistry "Toso Montanari", Alma Mater Studiorum-University of Bologna Viale del Risorgimento 4 40136-Bologna Italy
| |
Collapse
|
28
|
Crotti S, Di Iorio N, Mazzanti A, Righi P, Bencivenni G. Enantioselective Synthesis of Trifluoromethyl α,β-Unsaturated δ-Lactones via Vinylogous Aldol-Lactonization Cascade. J Org Chem 2018; 83:12440-12448. [DOI: 10.1021/acs.joc.8b01672] [Citation(s) in RCA: 19] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Simone Crotti
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Nicola Di Iorio
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Andrea Mazzanti
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Paolo Righi
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| | - Giorgio Bencivenni
- Department of Industrial Chemistry “Toso Montanari”, University of Bologna, Viale del Risorgimento 4, 40136 Bologna, Italy
| |
Collapse
|
29
|
Grau D, Grau BW, Hampel F, Tsogoeva SB. Three-Component Domino Knoevenagel/Vinylogous Michael Reaction: Entry to Challenging o
-Terphenyls. Chemistry 2018; 24:6551-6556. [DOI: 10.1002/chem.201800048] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2018] [Indexed: 12/15/2022]
Affiliation(s)
- Dominik Grau
- Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander University of Erlangen-Nürnberg; Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Germany
| | - Benedikt W. Grau
- Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander University of Erlangen-Nürnberg; Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Germany
| | - Frank Hampel
- Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander University of Erlangen-Nürnberg; Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Germany
| | - Svetlana B. Tsogoeva
- Organic Chemistry Chair I and Interdisciplinary Center for Molecular Materials (ICMM); Friedrich-Alexander University of Erlangen-Nürnberg; Nikolaus-Fiebiger-Strasse 10 91058 Erlangen Germany
| |
Collapse
|
30
|
Silva S, Matsuo BT, da Silva RC, Pozzi LV, Correa AG, Rollin P, Zukerman-Schpector J, Ferreira MAB, Paixão MW. Organocatalyzed Asymmetric Vinylogous Addition of Oxazole-2(3H)-thiones to α,β-Unsaturated Ketones: An Additive-Free Approach for Diversification of Heterocyclic Scaffold. J Org Chem 2018; 83:1701-1716. [DOI: 10.1021/acs.joc.7b02236] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Affiliation(s)
- Sandrina Silva
- Centre
of Excellence for Research in Sustainable Chemistry (CERSusChem),
Department of Chemistry, Federal University of São Carlos − UFSCar, São Carlos, São Paulo, Brazil, 13565-905
| | - Bianca T. Matsuo
- Centre
of Excellence for Research in Sustainable Chemistry (CERSusChem),
Department of Chemistry, Federal University of São Carlos − UFSCar, São Carlos, São Paulo, Brazil, 13565-905
| | - Rodrigo C. da Silva
- Centre
of Excellence for Research in Sustainable Chemistry (CERSusChem),
Department of Chemistry, Federal University of São Carlos − UFSCar, São Carlos, São Paulo, Brazil, 13565-905
| | - Lucas V. Pozzi
- Centre
of Excellence for Research in Sustainable Chemistry (CERSusChem),
Department of Chemistry, Federal University of São Carlos − UFSCar, São Carlos, São Paulo, Brazil, 13565-905
| | - Arlene G. Correa
- Centre
of Excellence for Research in Sustainable Chemistry (CERSusChem),
Department of Chemistry, Federal University of São Carlos − UFSCar, São Carlos, São Paulo, Brazil, 13565-905
| | - Patrick Rollin
- Université d’Orléans et CNRS, ICOA, UMR 7311, BP 6759, F-45067 Orléans, France
| | - Julio Zukerman-Schpector
- Centre
of Excellence for Research in Sustainable Chemistry (CERSusChem),
Department of Chemistry, Federal University of São Carlos − UFSCar, São Carlos, São Paulo, Brazil, 13565-905
| | - Marco A. B. Ferreira
- Centre
of Excellence for Research in Sustainable Chemistry (CERSusChem),
Department of Chemistry, Federal University of São Carlos − UFSCar, São Carlos, São Paulo, Brazil, 13565-905
| | - Márcio W. Paixão
- Centre
of Excellence for Research in Sustainable Chemistry (CERSusChem),
Department of Chemistry, Federal University of São Carlos − UFSCar, São Carlos, São Paulo, Brazil, 13565-905
| |
Collapse
|
31
|
Curti C, Battistini L, Sartori A, Rassu G, Pelosi G, Lombardo M, Zanardi F. (E
)-3-(Alkoxycarbonyl-2-Alkyliden)-2-Oxindoles: Multidentate Pronucleophiles for the Organocatalytic, Vinylogous Michael Addition to Nitroolefins. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701164] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Claudio Curti
- Dipartimento di Scienze degli Alimenti e del Farmaco; Università di Parma; Parco Area delle Scienze 27 A 43124 Parma Italy
| | - Lucia Battistini
- Dipartimento di Scienze degli Alimenti e del Farmaco; Università di Parma; Parco Area delle Scienze 27 A 43124 Parma Italy
| | - Andrea Sartori
- Dipartimento di Scienze degli Alimenti e del Farmaco; Università di Parma; Parco Area delle Scienze 27 A 43124 Parma Italy
| | - Gloria Rassu
- Istituto di Chimica Biomolecolare del CNR; Traversa La Crucca 3 07100 Li Punti, Sassari Italy
| | - Giorgio Pelosi
- Dipartimento di Scienze Chimiche, della Vita e della Sostenibilità Ambientale; Parco Area delle Scienze 17 A 43124 Parma Italy
| | - Marco Lombardo
- Dipartimento di Chimica “G. Ciamician”; Università degli Studi di Bologna; Via Selmi 2 40126 Bologna Italy
| | - Franca Zanardi
- Dipartimento di Scienze degli Alimenti e del Farmaco; Università di Parma; Parco Area delle Scienze 27 A 43124 Parma Italy
| |
Collapse
|
32
|
Xie KX, Zhang ZP, Li X. Bismuth Triflate-Catalyzed Vinylogous Nucleophilic 1,6-Conjugate Addition of para-Quinone Methides with 3-Propenyl-2-silyloxyindoles. Org Lett 2017; 19:6708-6711. [DOI: 10.1021/acs.orglett.7b03433] [Citation(s) in RCA: 43] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Kai-Xue Xie
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Zhi-Pei Zhang
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, P. R. China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, Collaborative
Innovation Center of Chemical Science and Engineering, College of
Chemistry, Nankai University, Tianjin 300071, P. R. China
| |
Collapse
|
33
|
Affiliation(s)
- Yanli Yin
- College of Bioengineering; Henan University of Technology; Zhengzhou Henan 450001 P.R. China
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province; Henan University; Kaifeng Henan 475004 P.R. China
| | - Zhiyong Jiang
- College of Bioengineering; Henan University of Technology; Zhengzhou Henan 450001 P.R. China
- Key Laboratory of Natural Medicine and Immuno-Engineering of Henan Province; Henan University; Kaifeng Henan 475004 P.R. China
| |
Collapse
|
34
|
Kowalczyk D, Albrecht Ł. Vinylogous Nucleophiles Bearing the Endocyclic Double Bond in the Allylic Alkylation with Morita-Baylis-Hillman Carbonates. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701185] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Dorota Kowalczyk
- Institute of Organic Chemistry, Department of Chemistry; Lodz University of Technology; Zeromskiego 116 90-924 Łódź Poland
| | - Łukasz Albrecht
- Institute of Organic Chemistry, Department of Chemistry; Lodz University of Technology; Zeromskiego 116 90-924 Łódź Poland
| |
Collapse
|
35
|
Non-Covalent Organocatalyzed Domino Reactions Involving Oxindoles: Recent Advances. Molecules 2017; 22:molecules22101636. [PMID: 28961217 PMCID: PMC6151767 DOI: 10.3390/molecules22101636] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/16/2017] [Revised: 09/25/2017] [Accepted: 09/26/2017] [Indexed: 11/17/2022] Open
Abstract
The ubiquitous presence of spirooxindole architectures with several functionalities and stereogenic centers in bioactive molecules has been appealing for the development of novel methodologies seeking their preparation in high yields and selectivities. Expansion and refinement in the field of asymmetric organocatalysis have made possible the development of straightforward strategies that address these two requisites. In this review, we illustrate the current state-of-the-art in the field of spirooxindole synthesis through the use of non-covalent organocatalysis. We aim to provide a concise overview of very recent methods that allow to the isolation of unique, densely and diversified spirocyclic oxindole derivatives with high structural diversity via the use of cascade, tandem and domino processes.
Collapse
|
36
|
Kumar K, Jaiswal MK, Singh RP. Asymmetric Vinylogous Aldol Reaction ofα-ketoesters with 3-alkylidene oxindoles. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700758] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Krishna Kumar
- Department of Chemistry; Indian Institute of Technology, Delhi, Hauz Khas; New Delhi - 110 016 India
| | - Manish K. Jaiswal
- Department of Chemistry; Indian Institute of Technology, Delhi, Hauz Khas; New Delhi - 110 016 India
| | - Ravi P. Singh
- Department of Chemistry; Indian Institute of Technology, Delhi, Hauz Khas; New Delhi - 110 016 India
| |
Collapse
|
37
|
Han JL, Tsai YD, Chang CH. Asymmetric Synthesis of Spirooxindole δ-Lactones with Vicinal Tertiary and Quaternary Stereocenters via Regio-, Diastereo-, and Enantioselective Organocatalytic Vinylogous Aldol-cyclization Cascade Reaction. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201701104] [Citation(s) in RCA: 27] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Jeng-Liang Han
- Department of Chemistry, Chung Yuan; Christian University; 200 Chung Pei Road, Chung Li District Taoyuan City 32023 Taiwan
| | - You-Da Tsai
- Department of Chemistry, Chung Yuan; Christian University; 200 Chung Pei Road, Chung Li District Taoyuan City 32023 Taiwan
| | - Chia-Hao Chang
- Department of Chemistry, Chung Yuan; Christian University; 200 Chung Pei Road, Chung Li District Taoyuan City 32023 Taiwan
| |
Collapse
|
38
|
Feng J, Li X. Enantioselective Vinylogous Michael–Michael Cascade Reactions of 3-Alkylidene Oxindoles and Nitroolefin Enoates. J Org Chem 2017. [DOI: 10.1021/acs.joc.7b00938] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Junjun Feng
- State Key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071 China
| | - Xin Li
- State Key Laboratory of Elemento-Organic
Chemistry, College of Chemistry, Collaborative Innovation Center of
Chemical Science and Engineering, Nankai University, Tianjin 300071 China
| |
Collapse
|
39
|
Iriarte I, Olaizola O, Vera S, Gamboa I, Oiarbide M, Palomo C. Controlling the α/γ-Reactivity of Vinylogous Ketone Enolates in Organocatalytic Enantioselective Michael Reactions. Angew Chem Int Ed Engl 2017; 56:8860-8864. [DOI: 10.1002/anie.201703764] [Citation(s) in RCA: 46] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/11/2017] [Revised: 05/13/2017] [Indexed: 12/12/2022]
Affiliation(s)
- Igor Iriarte
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Olatz Olaizola
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Silvia Vera
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Iñaki Gamboa
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| |
Collapse
|
40
|
Iriarte I, Olaizola O, Vera S, Gamboa I, Oiarbide M, Palomo C. Controlling the α/γ-Reactivity of Vinylogous Ketone Enolates in Organocatalytic Enantioselective Michael Reactions. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201703764] [Citation(s) in RCA: 18] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Igor Iriarte
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Olatz Olaizola
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Silvia Vera
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Iñaki Gamboa
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Mikel Oiarbide
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I; Universidad del País Vasco UPV/EHU; Manuel Lardizabal 3 20018 San Sebastián Spain
| |
Collapse
|
41
|
Zhan G, Shi ML, Lin WJ, Ouyang Q, Du W, Chen YC. Direct Asymmetric Aza-Vinylogous-Type Michael Additions of Nitrones from Isatins to Nitroalkenes. Chemistry 2017; 23:6286-6289. [PMID: 28337796 DOI: 10.1002/chem.201701290] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/22/2017] [Indexed: 12/13/2022]
Affiliation(s)
- Gu Zhan
- Department of Medicinal Chemistry; West China School of Pharmacy; Sichuan University; Chengdu 610041 P. R. China
| | - Ming-Lin Shi
- Department of Medicinal Chemistry; West China School of Pharmacy; Sichuan University; Chengdu 610041 P. R. China
| | - Wei-Jia Lin
- Department of Medicinal Chemistry; West China School of Pharmacy; Sichuan University; Chengdu 610041 P. R. China
| | - Qin Ouyang
- College of Pharmacy; Third Military Medical University; Chongqing 400038 P. R. China
| | - Wei Du
- Department of Medicinal Chemistry; West China School of Pharmacy; Sichuan University; Chengdu 610041 P. R. China
| | - Ying-Chun Chen
- Department of Medicinal Chemistry; West China School of Pharmacy; Sichuan University; Chengdu 610041 P. R. China
- College of Pharmacy; Third Military Medical University; Chongqing 400038 P. R. China
| |
Collapse
|
42
|
Jia ZL, Wang Y, Zhao CG, Zhang XH, Xu PF. Highly Enantioselective Construction of Hajos–Wiechert Ketone Skeletons via an Organocatalytic Vinylogous Michael/Stetter Relay Sequence. Org Lett 2017; 19:2130-2133. [DOI: 10.1021/acs.orglett.7b00767] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Zhi-Long Jia
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Yao Wang
- School
of Chemistry and Chemical Engineering, Shandong University, Jinan, 250100, P. R. China
| | - Chuan-Gang Zhao
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Xiao-Hai Zhang
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| | - Peng-Fei Xu
- State
Key Laboratory of Applied Organic Chemistry, College of Chemistry
and Chemical Engineering, Lanzhou University, Lanzhou 730000, P. R. China
| |
Collapse
|
43
|
Wang Y, Milkiewicz KL, Kaufman ML, He L, Landmesser NG, Levy DV, Allwein SP, Christie MA, Olsen MA, Neville CJ, Muthukumaran K. Plant Process for the Preparation of Cinchona Alkaloid-Based Thiourea Catalysts. Org Process Res Dev 2017. [DOI: 10.1021/acs.oprd.7b00049] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
| | | | | | | | | | | | | | | | | | | | - Kannan Muthukumaran
- Cambrex High Point, 4180 Mendenhall
Oaks Pkwy, High Point, North
Carolina 27265, United States
| |
Collapse
|
44
|
Zhang HJ, Shi CY, Zhong F, Yin L. Direct Asymmetric Vinylogous and Bisvinylogous Mannich-Type Reaction Catalyzed by a Copper(I) Complex. J Am Chem Soc 2017; 139:2196-2199. [DOI: 10.1021/jacs.6b13042] [Citation(s) in RCA: 52] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Hai-Jun Zhang
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Chang-Yun Shi
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Feng Zhong
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| | - Liang Yin
- CAS Key Laboratory of Synthetic
Chemistry of Natural Substances, Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 345 Lingling Road, Shanghai 200032, China
| |
Collapse
|
45
|
Feng J, Li X, Cheng JP. Enantioselective Organocatalyzed Vinylogous Michael Reactions of 3-Alkylidene Oxindoles with Enals. J Org Chem 2017; 82:1412-1419. [DOI: 10.1021/acs.joc.6b02582] [Citation(s) in RCA: 23] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Junjun Feng
- State Key Laboratory of Elemento-Organic Chemistry, Department of
Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
| | - Xin Li
- State Key Laboratory of Elemento-Organic Chemistry, Department of
Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
- Collaborative
Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
| | - Jin-Pei Cheng
- State Key Laboratory of Elemento-Organic Chemistry, Department of
Chemistry, Nankai University, Tianjin 300071, People’s Republic of China
- Collaborative
Innovation Center of Chemical Science and Engineering, Nankai University, Tianjin 300071, People’s Republic of China
| |
Collapse
|
46
|
Sun YL, Wei Y, Shi M. Applications of Chiral Thiourea-Amine/Phosphine Organocatalysts in Catalytic Asymmetric Reactions. ChemCatChem 2017. [DOI: 10.1002/cctc.201601144] [Citation(s) in RCA: 45] [Impact Index Per Article: 6.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yao-Liang Sun
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 P.R. China
| | - Yin Wei
- State Key Laboratory of Organometallic Chemistry; University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Ling Ling Road Shanghai 200032 P.R. China
| | - Min Shi
- Key Laboratory for Advanced Materials and Institute of Fine Chemicals; School of Chemistry & Molecular Engineering; East China University of Science and Technology; 130 Mei Long Road Shanghai 200237 P.R. China
- State Key Laboratory of Organometallic Chemistry; University of Chinese Academy of Sciences, Shanghai Institute of Organic Chemistry; Chinese Academy of Sciences; 345 Ling Ling Road Shanghai 200032 P.R. China
| |
Collapse
|
47
|
Kumar MSL, Manna SK, Maji S, Panda G. Indium triflate catalysed 3-aza-Cope rearrangement of amino acid derived α,β-unsaturated esters to alkylidene oxindoles. Org Biomol Chem 2017; 15:1762-1766. [DOI: 10.1039/c6ob02419j] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/22/2022]
Abstract
The first examples of amino acid derived α,β-unsaturated esters to Z-alkylidene oxindoles via 3-aza-Cope rearrangement using In(OTf)3 are reported.
Collapse
Affiliation(s)
| | - Sudipta Kumar Manna
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Saroj Maji
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
| | - Gautam Panda
- Medicinal and Process Chemistry Division
- CSIR-Central Drug Research Institute
- Lucknow 226031
- India
- Academy of Scientific and Innovative Research
| |
Collapse
|
48
|
Mei H, Lin L, Wang L, Dai L, Liu X, Feng X. Highly regio-, diastereo- and enantioselective deracemization of axially chiral 3-alkylideneoxindoles. Chem Commun (Camb) 2017; 53:8763-8766. [DOI: 10.1039/c7cc05164f] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
A variety of (Z)-4-alkyl-2-((3-oxo-1,3-diarylpropyl)cyclohexylidene)-indolin-2-ones with three stereogenic centers at ξ-, γ- and δ′-positions were obtained in up to 95% yield, 98% ee and 99/1 dr in the presence of L-PiPh/Sc(iii).
Collapse
Affiliation(s)
- Hongjiang Mei
- 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
| | - Lifeng Wang
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| | - Li Dai
- 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
| | - Xiaoming Feng
- Key Laboratory of Green Chemistry & Technology
- Ministry of Education
- College of Chemistry
- Sichuan University
- Chengdu 610064
| |
Collapse
|
49
|
Medina S, Harper MJ, Balmond EI, Miranda S, Crisenza GEM, Coe DM, McGarrigle EM, Galan MC. Stereoselective Glycosylation of 2-Nitrogalactals Catalyzed by a Bifunctional Organocatalyst. Org Lett 2016; 18:4222-5. [PMID: 27529800 PMCID: PMC5049936 DOI: 10.1021/acs.orglett.6b01962] [Citation(s) in RCA: 41] [Impact Index Per Article: 5.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
![]()
The
use of a bifunctional cinchona/thiourea organocatalyst for
the direct and α-stereoselective glycosylation of 2-nitrogalactals
is demonstrated for the first time. The conditions are mild, practical,
and applicable to a wide range of glycoside acceptors with products
being isolated in good to excellent yields. The method is exemplified
in the synthesis of mucin type Core 6 and 7 glycopeptides.
Collapse
Affiliation(s)
- Sandra Medina
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
| | - Matthew J Harper
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
| | - Edward I Balmond
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
| | - Silvia Miranda
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
| | - Giacomo E M Crisenza
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
| | - Diane M Coe
- GlaxoSmithKline Medicines Research Centre, Gunnels Wood Road, Stevenage SG1 2NY, United Kingdom
| | - Eoghan M McGarrigle
- Centre for Synthesis and Chemical Biology, UCD School of Chemistry, University College Dublin , Belfield, Dublin 4, Ireland
| | - M Carmen Galan
- School of Chemistry, University of Bristol , Cantock's Close, Bristol, BS8 1TS, United Kingdom
| |
Collapse
|
50
|
Alcaide B, Almendros P, Busto E, Luna A. Domino Meyer-Schuster/Arylation Reaction of Alkynols or Alkynyl Hydroperoxides with Diazonium Salts Promoted by Visible Light under Dual Gold and Ruthenium Catalysis. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201600158] [Citation(s) in RCA: 65] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
|