Process for the preparation of 6-chloro-2,4-dinitrophenol

Details Process for the preparation of 6-chloro-2,4-dinitrophenol Process for the preparation of 6-chloro-2,4-dinitrophenol

1984-04-26

1985-09-10

Lone, Werren B.

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

Organic compounds

Oxygen containing

568709, 568710, C07C 7928, C07C 7932

Patent

active

045408327

ABSTRACT:
A process for the preparation of 6-chloro-2,4-dinitrophenol in a high yield and in a high degree of purity by saponifying 2,4-dinitrochlorobenzene and/or 2,4-dinitrophenyl alkyl ethers of the formula ##STR1## in which m denotes the number 2, 3 or 4 and n denotes the number 1 or 2, by means of aqueous sodium hydroxide or potassium hydroxide solution and chlorinating the resulting 2,4-dinitrophenol with sodium hypochlorite, which comprises chlorinating the 2,4-dinitrophenol, without prior isolation as an intermediate, in aqueous suspension at a pH value of 3.5-7 by means of chlorine bleach liquor at temperatures of 5.degree. to 20.degree. C.

REFERENCES:
patent: 1398998 (1921-12-01), Bradshaw
patent: 4473713 (1984-09-01), Ratton

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