Hydroquinone by hydrolysis of p-aminophenol or salts

Details Hydroquinone by hydrolysis of p-aminophenol or salts Hydroquinone by hydrolysis of p-aminophenol or salts

1980-02-29

1981-05-26

Lone, Werren B.

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

Organic compounds

Oxygen containing

C07C 37045

Patent

active

042700108

ABSTRACT:
Hydroquinone is made by heating an aqueous solution of p-aminophenol, or of a salt of p-aminophenol with an acid made by catalytic or electrolytic reduction of nitrobenzene, with an organic sulfonic acid, and extracting from the reaction mixture the hydroquinone by contact with a water-insoluble solvent. Residual organic sulfonic acid can be recovered from the hydroquinone-free reaction mixture and reused.

REFERENCES:
patent: 3862247 (1975-01-01), Greco
patent: 3932538 (1976-01-01), Obara et al.
patent: 3935283 (1976-01-01), Greco
patent: 3937741 (1976-02-01), Greco

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