|
1
|
Dao Thi H, Goossens H, Hertsen D, Otte V, Van Nguyen T, Van Speybroeck V, D'hooghe M. Formation of Fluorinated Amido Esters through Unexpected C3-C4 Bond Fission in 4-Trifluoromethyl-3-oxo-β-lactams. Chem Asian J 2018; 13:421-431. [PMID: 29316332 DOI: 10.1002/asia.201701636] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2017] [Revised: 01/08/2018] [Indexed: 11/07/2022]
Abstract
4-Trifluoromethyl-3-oxo-β-lactams were unexpectedly transformed into 2-[(2,2-difluorovinyl)amino]-2-oxoacetates as major products, accompanied by minor amounts of 2-oxo-2-[(2,2,2-trifluoroethyl)amino]acetates, upon treatment with alkyl halides and triethylamine in DMSO. This peculiar C3-C4 bond fission reactivity was investigated in-depth, from both an experimental and a computational point of view, in order to shed light on the underlying reaction mechanism.
Collapse
Affiliation(s)
- Hang Dao Thi
- SynBioC Research Group, Department of Green Chemistry and Technology Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, CauGiay, Hanoi, Vietnam
| | - Hannelore Goossens
- Center for Molecular Modeling, Ghent University, Technologiepark 903, 9052, Zwijnaarde, Belgium
| | - Dietmar Hertsen
- Center for Molecular Modeling, Ghent University, Technologiepark 903, 9052, Zwijnaarde, Belgium
| | - Valerie Otte
- SynBioC Research Group, Department of Green Chemistry and Technology Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
- Center for Molecular Modeling, Ghent University, Technologiepark 903, 9052, Zwijnaarde, Belgium
| | - Tuyen Van Nguyen
- Institute of Chemistry, Vietnam Academy of Science and Technology, 18-Hoang Quoc Viet, CauGiay, Hanoi, Vietnam
| | | | - Matthias D'hooghe
- SynBioC Research Group, Department of Green Chemistry and Technology Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| |
Collapse
|
|
2
|
Luridiana A, Frongia A, Aitken DJ, Guillot R, Sarais G, Secci F. Deracemizing organocatalyzed Michael addition reactions of 2-(arylthio)cyclobutanones with β-nitrostyrenes. Org Biomol Chem 2016; 14:3394-403. [PMID: 26947186 DOI: 10.1039/c6ob00160b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Organocatalyzed Michael addition reactions of 2-(arylthio)cyclobutanones with trans-β-nitrostyrenes have been carried out using a bifunctional thiourea-primary amine catalyst, providing diastereoisomerically and enantiomerically enriched 2-alkyl-2-(arylthio)cyclobutanones having two contiguous stereocenters of which one is a chiral quaternary center. The absolute configuration of these novel adducts was assigned by X-ray diffraction analysis and a transition-state model is proposed to explain the observed stereoselectivities.
Collapse
Affiliation(s)
- Alberto Luridiana
- Dipartimento di Scienze Chimiche e Geologiche, Università degli Studi di Cagliari, Complesso Universitario di Monserrato, Monserrato (Ca), Italy.
| | | | | | | | | | | |
Collapse
|
|
3
|
Dobi Z, Holczbauer T, Soós T. Strain-Driven Direct Cross-Aldol and -Ketol Reactions of Four-Membered Heterocyclic Ketones. Org Lett 2015; 17:2634-7. [DOI: 10.1021/acs.orglett.5b01002] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Affiliation(s)
- Zoltán Dobi
- Institute of Organic Chemistry,
Research Centre for Natural Sciences, Hungarian Academy of Sciences, 1519 Budapest, Hungary
| | - Tamás Holczbauer
- Institute of Organic Chemistry,
Research Centre for Natural Sciences, Hungarian Academy of Sciences, 1519 Budapest, Hungary
| | - Tibor Soós
- Institute of Organic Chemistry,
Research Centre for Natural Sciences, Hungarian Academy of Sciences, 1519 Budapest, Hungary
| |
Collapse
|
|
4
|
Cele ZED, Pawar SA, Naicker T, Maguire GEM, Arvidsson PI, Kruger HG, Govender T. Organocatalytic Mannich Reactions on a Carbapenem Core - Synthesis of Mannich Bases and Bicyclic Diazanonanes. European J Org Chem 2014. [DOI: 10.1002/ejoc.201301823] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
|
|
5
|
Aitken DJ, Bernard AM, Capitta F, Frongia A, Guillot R, Ollivier J, Piras PP, Secci F, Spiga M. Very high stereoselectivity in organocatalyzed desymmetrizing aldol reactions of 3-substituted cyclobutanones. Org Biomol Chem 2012; 10:5045-8. [DOI: 10.1039/c2ob25813g] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
|
|
6
|
Rodig MJ, Seo H, Hirsch-Weil D, Abboud KA, Hong S. Isoquinoline-based diimine ligands for Cu(II)-catalyzed enantioselective nitroaldol (Henry) reactions. ACTA ACUST UNITED AC 2011. [DOI: 10.1016/j.tetasy.2011.05.018] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
|
|
7
|
Andreu I, Delgado J, Espinós A, Pérez-Ruiz R, Jiménez MC, Miranda MA. Cycloreversion of Azetidines via Oxidative Electron Transfer. Steady-State and Time-Resolved Studies. Org Lett 2008; 10:5207-10. [DOI: 10.1021/ol802181u] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Inmaculada Andreu
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, E-46022 Valencia, Spain
| | - Julio Delgado
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, E-46022 Valencia, Spain
| | - Amparo Espinós
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, E-46022 Valencia, Spain
| | - Raul Pérez-Ruiz
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, E-46022 Valencia, Spain
| | - M. Consuelo Jiménez
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, E-46022 Valencia, Spain
| | - Miguel A. Miranda
- Departamento de Química/Instituto de Tecnología Química UPV-CSIC, Universidad Politécnica de Valencia, Camino de Vera s/n, E-46022 Valencia, Spain
| |
Collapse
|
|
8
|
Cremonesi G, Croce PD, Fontana F, Rosa CL. Stereoselective synthesis of 4-substituted azetidine-2,3-diones by ring opening of 1,3-thiazolidine-derived spiro-β-lactams. ACTA ACUST UNITED AC 2008. [DOI: 10.1016/j.tetasy.2008.02.011] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|