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Kowalczyk A, Świątek K, Celeda M, Utecht-Jarzyńska G, Jaskulska A, Gach-Janczak K, Jasiński M. Trifluoromethylated 4,5-Dihydro-1,2,4-triazin-6(1 H)-ones via (3+3)-Annulation of Nitrile Imines with α-Amino Esters. MATERIALS (BASEL, SWITZERLAND) 2023; 16:856. [PMID: 36676595 PMCID: PMC9864844 DOI: 10.3390/ma16020856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 12/19/2022] [Revised: 01/05/2023] [Accepted: 01/10/2023] [Indexed: 06/17/2023]
Abstract
The synthesis of two series of monocyclic and bicyclic trifluoromethylated 4,5-dihydro-1,2,4-triazin-6(1H)-one derivatives based on (3+3)-annulation of methyl esters derived from natural α-amino acids with in situ generated trifluoroacetonitrile imines has been described. The devised protocol is characterized by a wide scope, easily accessible substrates, remarkable functional group tolerance, and high chemical yield. In reactions with chiral starting materials, no racemization at the stereogenic centers was observed and the respective enantiomerically pure products were obtained. Selected functional group interconversions carried out under catalytic hydrogenation and mild PTC oxidation conditions were also demonstrated.
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Affiliation(s)
- Anna Kowalczyk
- Department of Organic and Applied Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91403 Lodz, Poland
- Doctoral School of Exact and Natural Sciences, University of Lodz, Banacha 12/16, 90237 Lodz, Poland
| | - Kamil Świątek
- Department of Organic and Applied Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91403 Lodz, Poland
- Doctoral School of Exact and Natural Sciences, University of Lodz, Banacha 12/16, 90237 Lodz, Poland
| | - Małgorzata Celeda
- Department of Organic and Applied Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91403 Lodz, Poland
| | - Greta Utecht-Jarzyńska
- Department of Organic and Applied Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91403 Lodz, Poland
| | - Agata Jaskulska
- Institute of Organic Chemistry, Faculty of Chemistry, Lodz University of Technology, Żeromskiego 116, 90924 Lodz, Poland
| | - Katarzyna Gach-Janczak
- Department of Biomolecular Chemistry, Medical University of Lodz, Mazowiecka 6/8, 92215 Lodz, Poland
| | - Marcin Jasiński
- Department of Organic and Applied Chemistry, Faculty of Chemistry, University of Lodz, Tamka 12, 91403 Lodz, Poland
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Gaisina KR, Khlebnikov AF, Novikov MS. Non-pericyclic cycloaddition of gem-difluorosubstituted azomethine ylides to the CO bond: computational study and synthesis of fluorinated oxazole derivatives. Org Biomol Chem 2017; 15:4579-4586. [DOI: 10.1039/c7ob00521k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Abstract
The cycloaddition of α,α,α-trifluoroacetophenones with gem-difluoro-substituted azomethine ylides, generated from N-benzhydrylideneamines and difluorocarbenes, occurs regioselectively to give fluorinated oxazolidines.
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Affiliation(s)
- Karina R. Gaisina
- St. Petersburg State University
- Institute of Chemistry
- St. Petersburg
- 199034 Russia
| | | | - Mikhail S. Novikov
- St. Petersburg State University
- Institute of Chemistry
- St. Petersburg
- 199034 Russia
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De Saint Jores C, Mukan I, Yegorova T, Harakat D, Bouillon JP. Straightforward synthesis of tri- and tetra-substituted 3-trifluoromethylfurans by heterocyclization reaction of perfluoroketene dithioacetals. Tetrahedron 2016. [DOI: 10.1016/j.tet.2016.09.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
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Wu JW, Li F, Zheng Y, Nie J. DABCO-mediated one-pot sequential transformation: convenient access to fluorinated 1H-pyrazol-5(4H)-ones. Tetrahedron Lett 2012. [DOI: 10.1016/j.tetlet.2012.06.110] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Li F, Nie J, Wu JW, Zheng Y, Ma JA. Stereoselective Synthesis of Fluorinated 2,3-Dihydroquinolin-4(1H)-ones via a One-Pot Multistep Transformation. J Org Chem 2012; 77:2398-406. [DOI: 10.1021/jo202693x] [Citation(s) in RCA: 24] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
Affiliation(s)
- Feng Li
- Department of Chemistry, Tianjin University, Tianjin, 300072, P. R. of China
| | - Jing Nie
- Department of Chemistry, Tianjin University, Tianjin, 300072, P. R. of China
| | - Jun-Wei Wu
- Department of Chemistry, Tianjin University, Tianjin, 300072, P. R. of China
| | - Yan Zheng
- Department of Chemistry, Tianjin University, Tianjin, 300072, P. R. of China
| | - Jun-An Ma
- Department of Chemistry, Tianjin University, Tianjin, 300072, P. R. of China
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A facile stereoselective synthesis of 2-perfluoroalkyl-3a,4,5,6-tetrahydroimidazo[1,5-b]isoxazoles. J Fluor Chem 2009. [DOI: 10.1016/j.jfluchem.2008.11.002] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022]
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Wu R, Lu X, Zhang Y, Zhang J, Xiong W, Zhu S. Addition reactions of fluoroalkanesulfonyl azides to [60] fullerene under thermal or microwave irradiation condition. Tetrahedron 2008. [DOI: 10.1016/j.tet.2008.09.016] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/21/2022]
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