Articles with "trifluoromethyl" as a keyword



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Synthesis and properties of ultralow dielectric constant porous polyimide films containing trifluoromethyl groups

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Published in 2017 at "Journal of Applied Polymer Science"

DOI: 10.1002/app.44494

Abstract: In this research, a series of porous copolyimide (co-PI) films containing trifluoromethyl group (CF3) were facilely prepared via a phase separation process. The co-PI were synthesized by the reaction of benzophenone-3,3′,4,4′-tetracarboxylic dianhydride (BTDA) with two… read more here.

Keywords: porous films; containing trifluoromethyl; films containing; synthesis properties ... See more keywords
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Selective noncovalent proteasome inhibiting activity of trifluoromethyl-containing gem-quaternary aziridines.

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Published in 2023 at "Archiv der Pharmazie"

DOI: 10.1002/ardp.202300174

Abstract: The ubiquitin-proteasome pathway (UPP) represents the principal proteolytic apparatus in the cytosol and nucleus of all eukaryotic cells. Nowadays, proteasome inhibitors (PIs) are well-known as anticancer agents. However, although three of them have been approved… read more here.

Keywords: trifluoromethyl; aziridines selective; proteasome inhibiting; noncovalent proteasome ... See more keywords

A facile greener synthesis, antimicrobial evaluation and molecular modelling of new 4-aryl-2-(3-(2-(trifluoromethyl)phenyl)-1,8-naphthyridin-2-yl)phthalazin-1(2H)-one derivatives

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Published in 2019 at "Research on Chemical Intermediates"

DOI: 10.1007/s11164-018-03711-1

Abstract: The synthesis of 4-aryl-2-(3-(2-(trifluoromethyl)phenyl)-1,8-naphthyridin-2-yl)phthalazin-1(2H)-ones was performed by cyclization of 2-hydrazinyl-3-(2-(trifluoromethyl)phenyl)-1,8-naphthyridine with 2-aroylbenzoic acids in ethanol containing a catalytic amount of concentrated sulfuric acid under solid state conditions. All these synthesized compounds (8a–h) were screened for… read more here.

Keywords: phenyl naphthyridin; aryl trifluoromethyl; trifluoromethyl; trifluoromethyl phenyl ... See more keywords
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Synthesis of ethyl α-nitro-β-trifluoromethyl acrylate and β-trifluoromethyl-substituted tryptophan analogs and their plant growth regulating activity

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Published in 2017 at "Russian Chemical Bulletin"

DOI: 10.1007/s11172-017-1863-z

Abstract: Ethyl α-nitro-β-trifluoromethyl acrylate was synthesized by nucleophile-catalyzed reaction of ethyl nitroacetate with excess trifluoroacetaldehyde methyl hemiacetal and subsequent dehydration of the intermediate alcohol with P2O5. The synthesized nitro olefin regioselectively reacts with the substituted indoles… read more here.

Keywords: ethyl nitro; trifluoromethyl; substituted tryptophan; nitro trifluoromethyl ... See more keywords
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Efficient biosynthesis of (S)-1-[2-(trifluoromethyl)phenyl]ethanol by a novel isolate Geotrichum silvicola ZJPH1811 in deep eutectic solvent/cyclodextrin-containing system.

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Published in 2021 at "Bioresource technology"

DOI: 10.1016/j.biortech.2021.124832

Abstract: This study aimed to develop a biotransformation process for the production of (S)-1-[2-(trifluoromethyl)phenyl]ethanol, a key chiral intermediate of Plk1 inhibitor, and increase its productivity through medium engineering strategy. A fungus isolate Geotrichum silvicola ZJPH1811 was… read more here.

Keywords: trifluoromethyl phenyl; system; trifluoromethyl; phenyl ethanol ... See more keywords
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A novel access to 4-trifluoromethyl-1,3-thiazole derivatives via an intermediate thiocarbonyl ylide

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Published in 2019 at "Journal of Fluorine Chemistry"

DOI: 10.1016/j.jfluchem.2019.02.003

Abstract: Abstract A Lewis acid catalyzed reaction of trifluoroacetyldiazomethane (CF3COCHN2) with thiourea occurs in boiling THF solution in the presence of BF3·OEt2 yielding 2-amino-4-trifluoromethyl-1,3-thiazole in a fair yield. Analogous reactions with aromatic thioamides, performed in the… read more here.

Keywords: trifluoromethyl thiazole; thiazole derivatives; access trifluoromethyl; derivatives via ... See more keywords
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A new synthesis of 4′-trifluoromethyl-2,2′:6′,2″-terpyridine

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Published in 2021 at "Mendeleev Communications"

DOI: 10.1016/j.mencom.2021.04.035

Abstract: Reflux of two isomeric 3-amino-4,4,4-trifluoro-1-(2-pyridyl)but-2-en-1-one and 3-amino-1,1,1-trifluoro-4-(2-pyridyl)-but-3-en-2-one in acetic acid affords 4′-trifluoromethyl-2,2′:6′,2″-terpyridine (37%) with 1.4% admixture of 6′-trifluoromethyl-2,2′:4′,2″-terpyridine. read more here.

Keywords: trifluoromethyl; synthesis trifluoromethyl; trifluoromethyl terpyridine; new synthesis ... See more keywords
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Synthesis of trifluoromethyl and trifluoroacetyl substituted dihydropyrrolizines and tetrahydroindolizines

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Published in 2020 at "Tetrahedron Letters"

DOI: 10.1016/j.tetlet.2020.151633

Abstract: Abstract The trifluoroacetic anhydride promoted cyclization of enaminones derived from proline or pipecolic acid and β-ethoxyvinyl trifluoromethyl ketone was reinvestigated. An operationally simple procedure for the selective synthesis of bicyclic trifluoromethylated pyrroles and bicyclic pyrroles… read more here.

Keywords: trifluoromethyl trifluoroacetyl; substituted dihydropyrrolizines; trifluoroacetyl substituted; synthesis trifluoromethyl ... See more keywords
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Trifluoromethyl-Substituted Iridium(III) Complexes: From Photophysics to Photooxidation of a Biological Target.

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Published in 2018 at "Inorganic chemistry"

DOI: 10.1021/acs.inorgchem.7b02778

Abstract: Photodynamic therapeutic agents are of key interest in developing new strategies to develop more specific and efficient anticancer treatments. In comparison to classical chemotherapeutic agents, the activity of photodynamic therapeutic compounds can be finely controlled… read more here.

Keywords: iii; iridium iii; iii complexes; trifluoromethyl ... See more keywords

N-Trifluoromethyl Amines and Azoles: An Underexplored Functional Group in the Medicinal Chemist's Toolbox.

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Published in 2020 at "Journal of medicinal chemistry"

DOI: 10.1021/acs.jmedchem.0c01457

Abstract: Introducing trifluoromethyl groups is a common strategy to improve the properties of biologically active compounds. However, N-trifluoromethyl moieties on amines and azoles are very rarely used. To evaluate their suitability in drug design, we synthesized… read more here.

Keywords: amines azoles; chemistry; trifluoromethyl azoles; trifluoromethyl ... See more keywords

Zinc-Enabled Annulation of Trifluorodiazoethane with 2H-Azirines to Construct Trifluoromethyl Pyrazolines, Pyrazoles, and Pyridazines.

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Published in 2021 at "Organic letters"

DOI: 10.1021/acs.orglett.1c02139

Abstract: A diethylzinc-promoted unconventional annulation reaction of 2,2,2-trifluorodiazoethane with 2H-azirines is described. This transformation involves two [3 + 2] cycloaddition steps and one dinitrogen extrusion process in one pot, thus giving a broad array of 3-trifluoromethyl… read more here.

Keywords: annulation; trifluoromethyl pyrazolines; trifluoromethyl; zinc enabled ... See more keywords