Preparation of 2,5-dichlorophenol
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United States of America Patent
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Jun 2, 1987
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N/A
app pub date -
Mar 11, 1985
filing date -
Mar 10, 1984
priority date (Note) -
Expired
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Abstract
2,5-Dichlorophenol is readily and facilely prepared from 2,5-dichloro-4-hydroxybenzenesulfonic acid or salt thereof, said sulfonic acid/sulfonate itself being characteristically produced by hydrolysis of a precursor trichlorobenzenesulfonic acid, by cleaving the sulfo/sulfonate moiety therefrom by treatment, e.g., under reflux, with a constant boiling point hydrobromic acid.
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