Abstract
As a result of the selective reactivity of perfluoroisobutylene (a byproduct of the pyrolysis of tetrafluorethylene) and 1,1,5-trihydroperfluoropentanol, 2,5,5,9-tetrahydro-2-perfluoromethyl-4-oxaperfluorononane (THN) is obtained. Direct THN fluorination to 2-perfluoromethyl-4-oxaperfluorononane (PFN) in the presence of various catalysts has been studied. ▪ It is found that fluorination with copper and nickel proceeds non- selectivity. Catalyst Ni/support and Ag/support provide maximum efficiency: PFN concentration in the products is 70 and 92% (at 250 °C) respectively. PFN and other products of partial substitution of hydrogen atoms for fluorine in the THN molecule were characterized by NMR spectroscopy.
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