High temperature, catalytic Friedel-Crafts synthesis of benzene phosphorus dichloride
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United States of America Patent
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Dec 16, 1997
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N/A
app pub date -
Jan 31, 1997
filing date -
Jan 31, 1997
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Expired
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Abstract
Benzene phosphorus dichloride can be prepared by the reaction of benzene and phosphorus trichloride in the presence of a catalytically effective amount of a Friedel-Crafts catalyst, such as aluminum trichloride or ferric trichloride, at elevated temperature, such as from about 200.degree. C. to about 250.degree. C., and superatmospheric pressure, such as no less than the vapor pressure of the components at the chosen reaction temperature, to insure a liquid reaction medium.
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