13656-40-1Relevant academic research and scientific papers
New syntheses and chemistry of hexafluorotropone
Lou, Yan,He, Yigang,Kendall, John T.,Lemal, David M.
, p. 3891 - 3895 (2007/10/03)
Two new routes to hexafluorotropone have been developed, one from hexachlorotropone and a superior synthesis from hexafluorobenzene. Hexafluorotropone was found to be a very weak base, with a conjugate acid pKa of -6.2 ± 0.5. The tropone adds in [6 + 4] fashion to cyclopentadiene and photocyclizes to hexafluorobicyclo [3.2.0]hepta-3,6-dien-2-one. Lithium hydroxide in benzene transforms the tropone into pentafluorotropolone, which functions as a bidentate ligand.
Process for the preparation of halogenated benzoyl fluorides
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, (2008/06/13)
A process for the preparation of a halogenated benzoyl fluoride, which comprises contacting a halogenated benzotrifluoride of the formula STR1 in which m and n independently of one another represent an integer from 0 to 5, the sum of m and n being 5, with at least one sulphur compound of the formula STR2 in which X denotes fluorine, chlorine or hydroxyl and Y represents hydroxyl, or X and Y together denote an oxygen atom linked to the sulphur atom by a double bond, at an elevated temperature, and after reaction with the halogenated benzotrifluoride, removing the sulphur compound from the reaction mixture in the form of a compound of the formula STR3 in which X has the meaning given and Hal represents fluorine or chlorine, the reaction product is further reacted with potassium fluoride at an elevated temperature and under increased pressure.
