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US 5,206,440 AGranted
Oxidation of fluorine containing sulfides to sulfones
AssigneeE. I. Du Pont de Nemours and Company
InventorsRichard Beckerbauer, Shlomo Rozen
Life of this patent
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Abstract
A process for production of fluorinated sulfones from fluorinated organic sulfides by oxidation of the sulfides with an oxidizing reagent made from fluorine, water and acetonitrile. The sulfones are useful as second order nonlinear optical dyes.
Claims13
A process for oxidizing sulfides to sulfones, comprising, contacting an oxidizing agent made by passing fluorine through a mixture of water and acetonitrile with a sulfide of the formula R.sup.1 SR.sup.2 wherein:
- R.sup.1 is hydrocarbyl or substituted hydrocarbyl, both not containing olefinic or acetylenic bonds;
- R.sup.2 is perfluoroalkenyl or --CR.sup.3 R.sup.4 R.sup.5 ;
- R.sup.3 and R.sup.4 are each independently fluorine, perfluoroalkyl, perfluoroalkenyl, or hydrocarbyl or substituted hydrocarbyl not containing olefinic or acetylenic bonds;
- R.sup.5 is fluorine, perfluoroalkyl, perfluoroalkenyl, hydrocarbyl or substituted hydrocarbyl not containing olefinic or acetylenic bonds, or hydrogen;
- and
- provided that at least two of R.sup.3, R.sup.4 and R.sup.5 are fluorine, perfluoroalkenyl, or perfluoroalkyl.
3 more elements
Dependencies are inferred from the claim text.