38 research outputs found
How trimethyl(trifluoromethyl)silane reacts with itself in the presence of naked fluoride-a one-pot synthesis of bis([15]crown-5)cesium 1,1,1,3,5,5,5-heptafluoro-2,4-bis(trifluoromethyl)pentenide
No full textTyrra W, Kremlev MM, Naumann D, et al. How trimethyl(trifluoromethyl)silane reacts with itself in the presence of naked fluoride-a one-pot synthesis of bis([15]crown-5)cesium 1,1,1,3,5,5,5-heptafluoro-2,4-bis(trifluoromethyl)pentenide. CHEMISTRY-A EUROPEAN JOURNAL. 2005;11(22):6514-6518
A One-Pot Synthesis of 1,3-Dihydro-1,3,3-tris(perfluoroalkyl)isobenzofuran-1-olates and Their Complete NMR Spectroscopic Analysis on the Basis of 1D and 2D Experiments
No full textNew Stable Reagents for the Nucleophilic Trifluoromethylation. 1. Trifluoromethylation of Carbonyl Compounds with N
No full textAzidoperfluoroalkanes: Synthesis and Application in Copper(I)-Catalyzed Azide-Alkyne Cycloaddition
No full textAzidoperfluoroalkanes: Synthesis and Application in Copper(I)-Catalyzed Azide-Alkyne Cycloaddition
No full textLong-Lived Trifluoromethanide Anion: A Key Intermediate in Nucleophilic Trifluoromethylations.
No full textThe trifluoromethanide anion is the postulated key intermediate in nucleophilic trifluoromethylation reactions. However, for more than six decades, the trifluoromethanide anion was widely believed to exist only as a short-lived transient species in the condensed phase. It has now been prepd. in bulk for the first time in THF soln. The trifluoromethanide anion with the [K(18-crown-6)]+ cation was unequivocally characterized by low-temp. 19F and 13C NMR spectroscopy. Its intermediacy in nucleophilic trifluoromethylation reactions was directly evident by its reaction chem. with various electrophilic substrates. Variable-temp. NMR spectroscopy, along with quantum mech. calcns., support the persistence of the trifluoromethanide anion. [on SciFinder(R)
Long-Lived Trifluoromethanide Anion: A Key Intermediate in Nucleophilic Trifluoromethylations
No full textBis(difluoromethyl)trimethylsilicate Anion: A Key Intermediate in Nucleophilic Difluoromethylation of Enolizable Ketones with Me 3
No full textHighly Chemoselective DMPU-Mediated Trialkylsilylation of Terminal Alkynes Using Trifluoromethyltrialkylsilane
No full textBis(difluoromethyl)trimethylsilicate Anion: A Key Intermediate in Nucleophilic Difluoromethylation of Enolizable Ketones with Me 3
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