Method for preparing perfluorinated heterocyclic compounds, and compounds prepared by this method
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United States of America Patent
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Dec 22, 1992
Grant Date -
N/A
app pub date -
Dec 13, 1991
filing date -
Aug 30, 1989
priority date (Note) -
Expired
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Abstract
A method for preparing perfluorinated heterocyclic compounds corresponding to the formulas Ia and Ib ##STR1## wherein m represents 3 or 4, and X is a --CF.sub.2 --O--CF.sub.2 -- group, a --CF.sub.2 --CF.sub.2 --CF.sub.2 -- group, or a --CF(CF.sub.3)--CF.sub.2 -- group, and their mixtures, and the perfluoro-N-cyclohexylmorpholine prepared by this method. The compounds are obtained by electrochemical perfluorination starting from corresponding cycloalkenyl derivatives, and they can be used for preparing medically usable aqueous emulsions, e.g. blood substitutes.
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