Continuous process for the preparation of pivaloyl chloride and of aroyl chloride
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United States of America Patent
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Aug 12, 2003
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N/A
app pub date -
Dec 23, 1998
filing date -
Dec 23, 1997
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Expired
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Abstract
The invention relates to a continuous process for the preparation of pivaloyl chloride and of aroyl chloride, in particular of benzoyl chloride, which consists in reacting pivalic acid with a trichloromethylated aromatic compound in the presence of a catalyst at a temperature of between 60.degree. C. and 180.degree. C. under reduced pressure. The products formed are continuously removed from the reaction region, the hydrogen chloride formed being treated in a washing region in which a trichloromethylated compound moves countercurrentwise.
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