1
|
Organocatalysis for the Asymmetric Michael Addition of Aldehydes and α,β-Unsaturated Nitroalkenes. Catalysts 2022. [DOI: 10.3390/catal12020121] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Michael addition is an important reaction because it can be used to synthesize a wide range of natural products or complex compounds that exhibit biological activities. In this study, a mirror image of an aldehyde and α,β-unsaturated nitroalkene were reacted in the presence of (R,R)-1,2-diphenylethylenediamine (DPEN). Herein, thiourea was introduced as an organic catalyst, and a selective Michael addition reaction was carried out. The primary amine moiety of DPEN reacts with aldehydes to form enamines, which is activated by the hydrogen bond formation between the nitro groups of α,β-unsaturated nitroalkenes and thiourea. Our aim was to obtain an asymmetric Michael product by adding 1,4-enamine to an alkene to form a new carbon–carbon bond. As a result, the primary amine of the chiral diamine was converted to an enamine. The reaction proceeded with a relatively high degree of enantioselectivity, which was achieved using double activation via hydrogen bonding of the nitro group and thiourea. Michael products with a high degree of enantioselectivity (97–99% synee) and diastereoselectivity (syn/anti = 9/1) were obtained in yields ranging from 94–99% depending on the aldehydes.
Collapse
|
2
|
García‐Urricelqui A, Cózar A, Campano TE, Mielgo A, Palomo C. syn
‐Selective Michael Reaction of α‐Branched Aryl Acetaldehydes with Nitroolefins Promoted by Squaric Amino Acid Derived Bifunctional Brønsted Bases. European J Org Chem 2021. [DOI: 10.1002/ejoc.202100355] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Ane García‐Urricelqui
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
| | - Abel Cózar
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
- IKERBASQUE Basque Foundation for Science 48009 Blbao Spain
| | - Teresa E. Campano
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
| | - Antonia Mielgo
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
| | - Claudio Palomo
- Departamento de Química Orgánica I Universidad del País Vasco UPV/EHU Manuel Lardizábal 3 20018 San Sebastián Spain
| |
Collapse
|
3
|
Gorde AB, Ansari A, Ramapanicker R. Asymmetric Michael addition reactions of aldehydes to β-nitrostyrenes catalyzed by (S)–N-(D-prolyl-L-prolyl)-1 -triflicamido-3 -phenylpropan-2-amine. Tetrahedron 2021. [DOI: 10.1016/j.tet.2021.132095] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
|
4
|
Jun JJ, Xie X. Implementation of Diverse Synthetic and Strategic Approaches to Biologically Active Sulfamides. ChemistrySelect 2021. [DOI: 10.1002/slct.202004765] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Jaden J. Jun
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center School of Pharmacy 335 Sutherland Drive 206 Salk Pavilion University of Pittsburgh Pittsburgh PA15261 USA
- NIH National Center of Excellence for Computational Drug Abuse Research
- Drug Discovery Institute
| | - Xiang‐Qun Xie
- Department of Pharmaceutical Sciences and Computational Chemical Genomics Screening Center School of Pharmacy 335 Sutherland Drive 206 Salk Pavilion University of Pittsburgh Pittsburgh PA15261 USA
- NIH National Center of Excellence for Computational Drug Abuse Research
- Drug Discovery Institute
- Departments of Computational Biology and Structural Biology Director of CCGS and NIDA CDAR Centers School of Medicine University of Pittsburgh Pittsburgh Pennsylvania 15261 United States
| |
Collapse
|
5
|
Han W, Oriyama T. Asymmetric Michael Addition of Isobutyraldehyde to Nitroolefins Using an α,α-Diphenyl-(S)-prolinol-Derived Chiral Diamine Catalyst. BULLETIN OF THE CHEMICAL SOCIETY OF JAPAN 2020. [DOI: 10.1246/bcsj.20200078] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Wei Han
- Department of Chemistry, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| | - Takeshi Oriyama
- Department of Chemistry, Faculty of Science, Ibaraki University, 2-1-1 Bunkyo, Mito, Ibaraki 310-8512, Japan
| |
Collapse
|
6
|
Gorde AB, Ramapanicker R. Enantioselective Michael Addition of Aldehydes to β-Nitrostyrenes Catalyzed by (S)- N
-(D-Prolyl)-1-triflicamido-3-phenylpropan-2-amine. European J Org Chem 2019. [DOI: 10.1002/ejoc.201900719] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/27/2022]
Affiliation(s)
- Amol B. Gorde
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur Uttar Pradesh 208016 India
| | - Ramesh Ramapanicker
- Department of Chemistry; Indian Institute of Technology Kanpur; Kanpur Uttar Pradesh 208016 India
- Centre for Environmental Science and Engineering; Indian Institute of Technology Kanpur; Kanpur Uttar Pradesh 208016 India
| |
Collapse
|
7
|
Genc HN, Ozgun U, Sirit A. Design, synthesis and application of chiral tetraoxacalix[2]arene[2]triazine‐based organocatalysts in asymmetric Michael addition reactions. Chirality 2019; 31:293-300. [DOI: 10.1002/chir.23055] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2018] [Revised: 12/28/2018] [Accepted: 01/02/2019] [Indexed: 11/12/2022]
Affiliation(s)
- Hayriye Nevin Genc
- Department of Science Education, Ahmet Kelesoglu Education FacultyNecmettin Erbakan University Konya Turkey
| | - Ummu Ozgun
- Department of Chemistry, Ahmet Kelesoglu Education FacultyNecmettin Erbakan University Konya Turkey
| | - Abdulkadir Sirit
- Department of Chemistry, Ahmet Kelesoglu Education FacultyNecmettin Erbakan University Konya Turkey
| |
Collapse
|
8
|
Gorde AB, Ramapanicker R. d-Prolyl-2-(trifluoromethylsulfonamidopropyl)pyrrolidine: An Organocatalyst for Asymmetric Michael Addition of Aldehydes to β-Nitroalkenes at Ambient Conditions. J Org Chem 2019; 84:1523-1533. [PMID: 30609351 DOI: 10.1021/acs.joc.8b02945] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Amol B. Gorde
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| | - Ramesh Ramapanicker
- Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur 208016, India
| |
Collapse
|
9
|
Nugent TC, Hussein HAED, Ahmed S, Najafian FT, Hussain I, Georgiev T, Aljoumhawy MK. Carboxylate Salt Bridge-Mediated Enamine Catalysis: Expanded Michael Reaction Substrate Scope and Facile Access to Antidepressant (R)-Pristiq. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201700801] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Thomas C. Nugent
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Germany
| | | | - Shahzad Ahmed
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Germany
| | - Foad Tehrani Najafian
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Germany
| | - Ishtiaq Hussain
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Germany
| | - Tony Georgiev
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Germany
| | - Mahmoud Khalaf Aljoumhawy
- Department of Life Sciences and Chemistry; Jacobs University Bremen; Campus Ring 1 28759 Bremen Germany
| |
Collapse
|
10
|
Avila-Ortiz CG, Díaz-Corona L, Jiménez-González E, Juaristi E. Asymmetric Michael Addition Organocatalyzed by α,β-Dipeptides under Solvent-Free Reaction Conditions. Molecules 2017; 22:molecules22081328. [PMID: 28796165 PMCID: PMC6152315 DOI: 10.3390/molecules22081328] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/07/2017] [Revised: 07/24/2017] [Accepted: 07/27/2017] [Indexed: 01/23/2023] Open
Abstract
The application of six novel α,β-dipeptides as chiral organocatalysts in the asymmetric Michael addition reaction between enolizable aldehydes and N-arylmaleimides or nitroolefins is described. With N-arylmaleimides as substrates, the best results were achieved with dipeptide 2 as a catalyst in the presence of aq. NaOH. Whereas dipeptides 4 and 6 in conjunction with 4-dimethylaminopyridine (DMAP) and thiourea as a hydrogen bond donor proved to be highly efficient organocatalytic systems in the enantioselective reaction between isobutyraldehyde and various nitroolefins.
Collapse
Affiliation(s)
- C Gabriela Avila-Ortiz
- Departamento de Química, Centro de Investigación y de Estudios Avanzados, Avenida IPN 2508, Ciudad de México 07360, Mexico.
| | - Lenin Díaz-Corona
- Departamento de Química, Centro de Investigación y de Estudios Avanzados, Avenida IPN 2508, Ciudad de México 07360, Mexico.
| | - Erika Jiménez-González
- Departamento de Química, Centro de Investigación y de Estudios Avanzados, Avenida IPN 2508, Ciudad de México 07360, Mexico.
| | - Eusebio Juaristi
- Departamento de Química, Centro de Investigación y de Estudios Avanzados, Avenida IPN 2508, Ciudad de México 07360, Mexico.
- El Colegio Nacional, Luis González Obregón 23, Centro Histórico, Ciudad de México 06020, Mexico.
| |
Collapse
|
11
|
Borges-González J, Feher-Voelger A, Crisóstomo FP, Morales EQ, Martín T. Tetrahydropyran-Based Hybrid Dipeptides as Asymmetric Catalysts for Michael Addition of Aldehydes to β-Nitrostyrenes. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601193] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Jorge Borges-González
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
| | - Andrés Feher-Voelger
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
| | - Fernando Pinacho Crisóstomo
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
- Instituto Universitario de Bio-Orgánica “Antonio González”, CIBICAN; Avda. Astrofísico Francisco Sánchez, 2 38206 La Laguna, S/C de Tenerife Spain
| | - Ezequiel Q. Morales
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
| | - Tomás Martín
- Instituto de Productos Naturales y Agrobiología-CSIC; Avda. Astrofísico Francisco Sánchez, 3 38206 La Laguna, S/C de Tenerife Spain
- Instituto Universitario de Bio-Orgánica “Antonio González”, CIBICAN; Avda. Astrofísico Francisco Sánchez, 2 38206 La Laguna, S/C de Tenerife Spain
| |
Collapse
|
12
|
Highly enantioselective Michael addition of α,α-disubstituted aldehydes to nitroolefins. RESEARCH ON CHEMICAL INTERMEDIATES 2016. [DOI: 10.1007/s11164-016-2468-0] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
13
|
Sadiq A, Mahmood F, Ullah F, Ayaz M, Ahmad S, Haq FU, Khan G, Jan MS. Synthesis, anticholinesterase and antioxidant potentials of ketoesters derivatives of succinimides: a possible role in the management of Alzheimer's. Chem Cent J 2015; 9:31. [PMID: 26064188 PMCID: PMC4461796 DOI: 10.1186/s13065-015-0107-2] [Citation(s) in RCA: 64] [Impact Index Per Article: 7.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2015] [Accepted: 05/15/2015] [Indexed: 12/01/2022] Open
Abstract
Background Based on the pharmacological potency and structural features of succinimides, this study was designed to synthesize new ketoesters derivatives of succinimides. Furthermore, the synthesized compounds were evaluated for their possible anticholinesterase and antioxidant potentials. The compounds were synthesized by organocatalytic Michael additions of α-ketoesters to N-aryl maleimides. Acetyl and butyrylcholinesterase inhibitory activities were determined using Ellman’s spectrophotometric assay. The antioxidant activity was performed with DPPH and ABTS free radicals scavenging assay. Results The Michael additions of α-ketoesters to maleimides was promoted by 8-hydroxyquinoline. The organocatalyst (8-hydroxyquinoline, 20 mol %) produced the compounds in relatively shorter time (20–24 h) and with excellent isolated yields (84-98 %). The synthesized compounds (1–4) showed outstanding acetylcholinesterase (AChE) and butyrylcholinesterase (BChE) inhibitory potentials, i.e., 98.75 and 90.00 % respectively for compound 2, with IC50 < 0.1 μg/mL. Additionally, compounds 1–4 revealed moderate antioxidant activity at different concentrations. In DPPH free radical scavenging assay, compound 1 showed dominant result with 72.41 ± 0.45, 52.49 ± 0.78 and 35.60 ± 0.75 % inhibition at concentrations of 1000, 500 and 250 μg/mL respectively, IC50 value of 440 μg/mL. However, the free radical scavenging was better when used ABTS free radicals. In ABTS free radicals scavenging assay compound 1 exhibited 88.51 ± 0.62 % inhibition at highest tested concentration i.e., 1000 μg/mL. Conclusions Herein, we have synthesized four ketoesters derivatives of succinimides in a single step reaction and high yields. As a highlight, we have showed a first report on the anticholinesterase and antioxidant potentials of succinimides. All the compounds showed overwhelming enzyme inhibitions and moderate antioxidant potentials. Graphical representation of synthesis, anticholinesterase and antioxidant potentials of ketoester derivatives of succinimides. ![]()
Electronic supplementary material The online version of this article (doi:10.1186/s13065-015-0107-2) contains supplementary material, which is available to authorized users.
Collapse
Affiliation(s)
- Abdul Sadiq
- Department of Pharmacy, University of Malakand, Chakdara, Dir Pakistan
| | - Fawad Mahmood
- Department of Pharmacy, University of Malakand, Chakdara, Dir Pakistan ; Department of Pharmacy, Sarhad University of Science and Information Technology, Peshawar, KPK Pakistan
| | - Farhat Ullah
- Department of Pharmacy, University of Malakand, Chakdara, Dir Pakistan
| | - Muhammad Ayaz
- Department of Pharmacy, University of Malakand, Chakdara, Dir Pakistan
| | - Sajjad Ahmad
- Department of Pharmacy, University of Malakand, Chakdara, Dir Pakistan
| | - Faizan Ul Haq
- Department of Pharmacy, University of Malakand, Chakdara, Dir Pakistan
| | - Ghazan Khan
- Department of Pharmacy, University of Malakand, Chakdara, Dir Pakistan
| | | |
Collapse
|
14
|
Bixa T, Hunter R, Andrijevic A, Petersen W, Su H, Dhoro F. Stereoselective formation of quaternary stereogenic centers via alkylation of α-substituted malonate-imidazolidinones. J Org Chem 2014; 80:762-9. [PMID: 25485811 DOI: 10.1021/jo502140d] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A new stereoselective alkylation methodology is presented for formation of chiral, nonracemic quaternary centers via a chiral auxiliary protocol involving α-alkylated malonate imidazolidinones. Based on two X-ray structures of quaternized products, the diastereoselectivity observed may be rationalized via a transition-state involving an s-transC-N conformation of the C-N bond of the auxiliary, with the metal cation (K(+)) chelated into the malonate six-membered hole as a Z-enolate. A deprotection protocol involving ethanethiolate exchange of the imide to the corresponding thioester, followed by a standard Fukuyama reduction and a borohydride reduction, furnishes α,α'-quaternized β-hydroxypropionates in high ee overall.
Collapse
Affiliation(s)
- Thobela Bixa
- Department of Chemistry, University of Cape Town , Rondebosch 7701, South Africa
| | | | | | | | | | | |
Collapse
|
15
|
Yu H, Liu M, Han S. Highly efficient asymmetric Michael addition of aldehydes to nitroalkenes with 4,5-methano-l-proline as organocatalysts. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.08.069] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
|
16
|
Mondal B, Pan SC. Primary amino acid catalyzed asymmetric intramolecular Mannich reaction for the synthesis of 2-aryl-2,3-dihydro-4-quinolones. Org Biomol Chem 2014; 12:9789-92. [DOI: 10.1039/c4ob02146k] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
17
|
Desmarchelier A, Coeffard V, Moreau X, Greck C. Asymmetric organocatalytic functionalization of α,α-disubstituted aldehydes through enamine activation. Tetrahedron 2014. [DOI: 10.1016/j.tet.2014.01.056] [Citation(s) in RCA: 49] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
|
18
|
Demircan E, Eymur S, Demir AS. Proline–calixarene thiourea host–guest complex catalyzed enantioselective aldol reactions: from nonpolar solvents to the presence of water. ACTA ACUST UNITED AC 2014. [DOI: 10.1016/j.tetasy.2014.01.015] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
|
19
|
Dhakal RC, Dieter RK. Regioselective 1,4-Conjugate Addition of Grignard Reagents to Nitrodienes in the Presence of Catalytic Amounts of Zn(II) Salts. Org Lett 2014; 16:1362-5. [DOI: 10.1021/ol500114m] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Affiliation(s)
- Ramesh C. Dhakal
- Hunter
Laboratory, Department
of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| | - R. Karl Dieter
- Hunter
Laboratory, Department
of Chemistry, Clemson University, Clemson, South Carolina 29634-0973, United States
| |
Collapse
|
20
|
Radivojevic J, Minovska G, Senerovic L, O'Connor K, Jovanovic P, Savic V, Tokic-Vujosevic Z, Nikodinovic-Runic J, Maslak V. Synthesis of γ-nitroaldehydes containing quaternary carbon in the α-position using a 4-oxalocrotonate tautomerase whole-cell biocatalyst. RSC Adv 2014. [DOI: 10.1039/c4ra05517a] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthetically valuable quaternary carbon containing γ-nitroaldehydes were obtained from branched chain aldehydes and a range of α,β-unsaturated nitroalkenes by a whole-cell biocatalytic reaction using 4-oxalocrotonate tautomerase as catalyst.
Collapse
Affiliation(s)
- Jelena Radivojevic
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade, Serbia
- Institute of Molecular Genetics and Genetic Engineering
- University of Belgrade
| | - Gordana Minovska
- Institute of Molecular Genetics and Genetic Engineering
- University of Belgrade
- 11010 Belgrade, Serbia
| | - Lidija Senerovic
- Institute of Molecular Genetics and Genetic Engineering
- University of Belgrade
- 11010 Belgrade, Serbia
| | - Kevin O'Connor
- School of Biomolecular and Biomedical Sciences
- Centre for Synthesis and Chemical Biology
- University College Dublin
- Dublin 4, Ireland
| | - Predrag Jovanovic
- Department of Organic Chemistry
- Faculty of Pharmacy
- University of Belgrade
- 11221 Belgrade, Serbia
| | - Vladimir Savic
- Department of Organic Chemistry
- Faculty of Pharmacy
- University of Belgrade
- 11221 Belgrade, Serbia
| | - Zorana Tokic-Vujosevic
- Department of Organic Chemistry
- Faculty of Pharmacy
- University of Belgrade
- 11221 Belgrade, Serbia
| | | | - Veselin Maslak
- Faculty of Chemistry
- University of Belgrade
- 11000 Belgrade, Serbia
| |
Collapse
|
21
|
da Silva RC, da Silva GP, Sangi DP, Pontes JGDM, Ferreira AG, Corrêa AG, Paixão MW. 1,1-Diamino-2-nitroethylenes as excellent hydrogen bond donor organocatalysts in the Michael addition of carbon-based nucleophiles to β-nitrostyrenes. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.08.040] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
|
22
|
Asymmetric Michael addition of 4H-thiopyran-4-one to nitroolefins catalyzed by diamine mono-N-sulfonamide and its application to concise synthesis of enantiopure multiring heterocycles. Tetrahedron 2013. [DOI: 10.1016/j.tet.2013.05.116] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
23
|
Kastl R, Wennemers H. Peptide-Catalyzed Stereoselective Conjugate Addition Reactions Generating All-Carbon Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2013. [DOI: 10.1002/ange.201301583] [Citation(s) in RCA: 53] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
|
24
|
Kastl R, Wennemers H. Peptide-Catalyzed Stereoselective Conjugate Addition Reactions Generating All-Carbon Quaternary Stereogenic Centers. Angew Chem Int Ed Engl 2013; 52:7228-32. [DOI: 10.1002/anie.201301583] [Citation(s) in RCA: 105] [Impact Index Per Article: 9.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/23/2013] [Indexed: 11/12/2022]
|
25
|
Durmaz M, Sirit A. Calixarene-based highly efficient primary amine–thiourea organocatalysts for asymmetric Michael addition of aldehydes to nitrostyrenes. Supramol Chem 2013. [DOI: 10.1080/10610278.2013.773331] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Mustafa Durmaz
- a Department of Chemistry , Necmettin Erbakan University , Meram , Konya , 42099 , Turkey
| | - Abdulkadir Sirit
- a Department of Chemistry , Necmettin Erbakan University , Meram , Konya , 42099 , Turkey
| |
Collapse
|
26
|
Ballini R, Araújo N, Gil MV, Román E, Serrano JA. Conjugated nitrodienes. Synthesis and reactivity. Chem Rev 2013; 113:3493-515. [PMID: 23308356 DOI: 10.1021/cr2002195] [Citation(s) in RCA: 41] [Impact Index Per Article: 3.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- Roberto Ballini
- School of Science and Technology, Chemistry Division, via S. Agostino 1, I-62032 Camerino, Italy
| | | | | | | | | |
Collapse
|
27
|
Nugent TC, Bibi A, Sadiq A, Shoaib M, Umar MN, Tehrani FN. Chiral picolylamines for Michael and aldol reactions: probing substrate boundaries. Org Biomol Chem 2012; 10:9287-94. [PMID: 23104278 DOI: 10.1039/c2ob26382c] [Citation(s) in RCA: 29] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Here we report on inroads concerning increased substrate breadth via the picolylamine organocatalyst template, a vicinal chiral diamine based on a pyridine-primary amine motif. The addition of cyclohexanone to β-nitrostyrene has many catalyst solutions, but cyclopentanone and isobutyraldehyde additions continue to be challenging. PicAm-3 (10 mol%) readily allows the Michael addition of cyclopentanone or isobutyraldehyde (5.0 equiv.) to β-nitrostyrene derivatives. By contrast, PicAm-1 (7.0 mol%) is optimal for catalyzing the aldol reaction of cyclohexanone or cycloheptanone (3.3 equiv.) with aromatic aldehydes. Eighteen products are reported and for each reaction type new products are reported (4b-d, 9c). Very good yields and stereoselectivities are generally noted. The reactions, which require an acid additive, proceed via a transient chiral enamine and a mechanistic case is put forth for a bifunctional catalysis model.
Collapse
Affiliation(s)
- Thomas C Nugent
- Department of Chemistry, School of Engineering and Science, Jacobs University Bremen, Campus Ring 1, 28759 Bremen, Germany.
| | | | | | | | | | | |
Collapse
|
28
|
Tsakos M, Trifonidou M, Kokotos CG. Pyrrolidine-thioxotetrahydropyrimidinone as an efficient organocatalyst for the enantioselective Michael addition of cyclic ketones to nitrodienes. Tetrahedron 2012. [DOI: 10.1016/j.tet.2012.07.078] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
|
29
|
Nugent TC, Sadiq A, Bibi A, Heine T, Zeonjuk LL, Vankova N, Bassil BS. Noncovalent Bifunctional Organocatalysts: Powerful Tools for Contiguous Quaternary-Tertiary Stereogenic Carbon Formation, Scope, and Origin of Enantioselectivity. Chemistry 2012; 18:4088-98. [DOI: 10.1002/chem.201103005] [Citation(s) in RCA: 81] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/25/2011] [Indexed: 11/09/2022]
|
30
|
Zhao L, Shen J, Liu D, Liu Y, Zhang W. Highly efficient asymmetric Michael addition of aldehyde to nitroolefin using perhydroindolic acid as a chiral organocatalyst. Org Biomol Chem 2012; 10:2840-6. [DOI: 10.1039/c2ob00003b] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
31
|
Wang J, Zhang Q, Zhang H, Feng Y, Yuan W, Zhang X. Organocatalytic enantioselective Michael addition of a kojic acid derivative to nitro olefins. Org Biomol Chem 2012; 10:2950-4. [DOI: 10.1039/c2ob07192d] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Affiliation(s)
- Jiyu Wang
- Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu, China
| | | | | | | | | | | |
Collapse
|
32
|
Ma G, Bartoszewicz A, Ibrahem I, Córdova A. Highly Enantioselective Co-Catalytic Direct Aldol Reactions by Combination of Hydrogen-Bond Donating and Acyclic Amino Acid Catalysts. Adv Synth Catal 2011. [DOI: 10.1002/adsc.201100408] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
|
33
|
Ma ZW, Liu YX, Zhang WJ, Tao Y, Zhu Y, Tao JC, Tang MS. Highly Enantioselective Michael Additions of Isobutyraldehyde to Nitroalkenes Promoted by Amphiphilic Bifunctional Primary Amine-Thioureas in Organic or Aqueous Medium. European J Org Chem 2011. [DOI: 10.1002/ejoc.201101086] [Citation(s) in RCA: 52] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
|
34
|
Chen JR, Fu L, Zou YQ, Chang NJ, Rong J, Xiao WJ. Pyrrolidinyl-sulfamide derivatives as a new class of bifunctional organocatalysts for direct asymmetric Michael addition of cyclohexanone to nitroalkenes. Org Biomol Chem 2011; 9:5280-7. [DOI: 10.1039/c1ob05442b] [Citation(s) in RCA: 39] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|