1,1,1-Triaryl-2,2,2-trifluoroethanes and process for their synthesis
OwnerRobert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch, William D. Kray +1inventors
InventorsRobert A. Administrator of the National Aeronautics and Space Administration, with respect to an invention of Frosch, William D. Kray, Robert W. Rosser
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Abstract
New 1,1,1-triaryl-2,2,2-trifluoroethanes in which the aryl radicals carry one or more substitutents have been prepared by condensation of trifluoroacetophenones with substituted phenyl compounds in the presence of catalytic quantities of trifluoromethylsulfonic acid. The reaction can be carried out under reflux in toluene or, for strikingly better results in certain cases, reactants are simply stirred at room temperature for about 24 to 48 hours.
Claims6
1,1,1-Triaryl-2,2,2-trifluoroethane of the formula ##STR3## wherein X and Y are hydrogen or halogen atoms, or radicals selected from the class consisting of methoxy, phenoxy, hydroxy, alkyl of up to 5 carbon atoms, trifluoromethyl, carboxy, formyl, and nitro.
A process for the formation of a triaryl-2,2,2-trifluoroethane which comprises the condensation reaction of an .alpha.,.alpha.,.alpha.-trifluoroacetophenone with a phenyl compound in the presence of a catalytic quantity of trifluoromethylsulfonic acid.
Dependencies are inferred from the claim text.