| http://www.w3.org/ns/prov#value | - A process for producing 2,2-diphenylhexafluoropropanes having the general formula: ##STR2## wherein x is a hydrogen atom or a halogen atom, which process comprises: subjecting benzene or monohalogenated benzene to a condensation reaction with hexafluoroacetone in the presence of trifluoromethane sulfonic acid.
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