Organic compounds -- part of the class 532-570 series – Organic compounds – Silicon containing
Patent
1988-04-04
1989-02-14
Shaver, Paul F.
Organic compounds -- part of the class 532-570 series
Organic compounds
Silicon containing
556418, 544229, 549215, C07F 718, C07F 710
Patent
active
048047740
ABSTRACT:
Quinones may be perfluoroalkylated by means of perfluoroalkyltrihydrocarbyl silane using trialkylphosphites or hexahydrocarbylphosphorous triamides, or both as catalysts. The reaction --which is conducted under essentially anhydrous conditions, preferably in a suitable liquid phase reaction medium, most preferably a dipolar aprotic solvent--results in the formation of gem-disubstituted cyclohexadienones in which the gem substituents are a perfluoroalkyl group and a trihydrocarbylsiloxy group. These gem-disubstituted compounds in turn can be readily converted to perfluoroalkyl substituted aromatics, thus circumventing the traditional need for photochlorination followed by halogen exchange using hydrogen fluoride as a means of preparing perfluoroalkyl aromatic compounds.
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Ethyl Corporation
Shaver Paul F.
Sieberth John F.
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