Preparation of 2,5-dichlorophenol

Details Preparation of 2,5-dichlorophenol Preparation of 2,5-dichlorophenol

1985-03-11

1987-06-02

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

568776, 568778, C07C 3930

Patent

active

046706100

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.

REFERENCES:
patent: 2196985 (1939-02-01), Flett
patent: 2249757 (1941-02-01), Flett
patent: 2835707 (1958-05-01), Stoesser et al.
patent: 3965158 (1976-06-01), Soula et al.
Galat "J. Amer. Chem. Soc." vol. 74, pp. 3890-3891 (1958).

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