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Pentafluorophenol is the organofluorine compound (specifically a fluoroalcohol) with the formula C 6 F 5 OH. This is the perfluorinated analogue of phenol. It is a white solid that melts just above room temperature, and smells of phenol. With a pK a of 5.5, it is one of the most acidic phenols.
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Hexafluoroisopropanol, commonly abbreviated HFIP, is the organic compound with the formula (CF 3) 2 CHOH. This fluoroalcohol finds use as solvent in organic chemistry. [1] Hexafluoro-2-propanol is transparent to UV light with high density, low viscosity and low refractive index. It is a colorless, volatile liquid with a pungent odor.
2-Fluoroethanol is the organic compound with the formula CH 2 FCH 2 OH. This colorless liquid is one of the simplest stable fluorinated alcohols. It was once used as a pesticide. The related difluoro- and trifluoroethanols are far less dangerous. [4]
The synthesis of fluorotelomer alcohols requires a varying number of tetrafluoroethylene monomers that form an oligomer with a pentafluoroethyl iodide telogen. The fluorinated iodide then undergoes an addition with ethylene to form an organoiodine compound with increased synthesis possibilities. [ 1 ]
Trifluoroacetaldehyde, trifluoroethanal, or fluoral, [2] is a fluorinated derivative of acetaldehyde with the formula CF 3 CHO.It is a gas at room temperature. Fluoral is used to introduce trifluoromethyl groups into organic compounds.
Nonafluoro-tert-butyl alcohol (IUPAC name: 1,1,1,3,3,3-hexafluoro-2-(trifluoromethyl)propan-2-ol) is a fluoroalcohol. It is the perfluorinated analog of tert-butyl alcohol. Notably, as a consequence of its electron withdrawing fluorine substituents, it is very acidic for an alcohol, with a pK a value of 5.4, similar to that of a carboxylic acid.
These new methodologies allowed the synthesis of C-F bonds without using elemental fluorine and without relying on metathetical methods. [citation needed] In 1957, the anticancer activity of 5-fluorouracil was described. This report provided one of the first examples of rational design of drugs. [46]