Process for preparing chlorohydroquinone

Details Process for preparing chlorohydroquinone Process for preparing chlorohydroquinone

1974-11-19

1976-05-25

Thomas, Jr., James O.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260623R, C07C 3908, C07C 3928

Patent

active

039593924

ABSTRACT:
Preparation of chlorohydroquinone by adding hydrogen chloride to p-benzoquinone, wherein a 1 to 20 % by weight solution of p-benzoquinone in benzene is treated discontinuously or continuously with hydrogen chloride at a hydrogen chloride pressure of from 1 to 6 atmospheres gauge, at a temperature of from 40.degree. to 80.degree.C, the residence time being from 1 to 4 hours and the chlorohydroquinone is isolated in known manner.

REFERENCES:
patent: 1912744 (1933-06-01), Bramer et al.
patent: 2748173 (1966-05-01), Rodgen
Roberts et al., "Basic Principles of Organic Chem.", 1965.
Grinev et al., "Chem. Abs.", Vol. 49 (1955), p. 12353c.

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