Conversion of 1,1,1-trichloroperhaloalkanes into perhaloalkanoyl chlorides
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United States of America Patent
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Oct 25, 1983
Issued Date -
N/A
app pub date -
Apr 29, 1982
filing date -
Dec 15, 1980
priority date (Note) -
Expired
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Abstract
A process for the preparation of perhaloalkanoyl chloride is disclosed which comprises reacting 1,1,1-trichloroperfluoroalkane, with a sulfur trioxide-containing compound selected from the group consisting of oleum sulfur trioxide and stabilized sulfur trioxide in the presence of catalytic amounts of a halogen catalyst selected from the group consisting of iodine, bromine, iodine monobromide and iodine monochloride and bromine monochloride wherein the 1,1,1-trichloroperhaloalkane is a straight or branched chain acyclic organic compound having 2 to 8 carbon atoms and having at least one trihalomethyl group wherein at least one halo atom is fluorine and having the remaining carbon atoms substituted by F, Cl, Br or I atoms.
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