TFPX synthesis
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United States of America Patent
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Sep 4, 2001
Issued Date -
N/A
app pub date -
Dec 6, 1996
filing date -
Oct 23, 1996
priority date (Note) -
Expired
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Abstract
A method of making TFPX using an S.sub.N 2 type nucleophilic displacement reaction. The method includes reacting a nucleophilic fluorine molecule with a nonfluorinated-tetrahalo-p-xylene molecule. Exemplary nucleophilic fluorine molecules include, but are not limited to, CsF, KF, NaF and LiF. The nonfluorinated-tetrahalo-p-xylene molecules may include, .alpha.,.alpha.,.alpha.',.alpha.'-tetrachloro-p-xylene, .alpha.,.alpha.,.alpha.',.alpha.'-tetrabromo-p-xylene or .alpha.,.alpha.,.alpha.',.alpha.'-tetraiodo-p-xylene. The reaction may be carried out in an open or closed container. Furthermore, the reaction may be carried out in the presence of a phase transfer catalyst. In certain embodiments, the reaction is carried in a substantially solvent-free environment.
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