Preparation of 2,4-dichloro-3-alkyl-6-nitrophenols

Details Preparation of 2,4-dichloro-3-alkyl-6-nitrophenols Preparation of 2,4-dichloro-3-alkyl-6-nitrophenols

1986-03-19

1987-06-02

Lone, Werren B.

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

Organic compounds

Oxygen containing

C07C 7932

Patent

active

046706089

ABSTRACT:
2,4-Dichloro-3-alkyl-6-nitrophenols are prepared by chlorinating, with chlorine in the presence of a catalyst, 1-alkyl-4-nitrobenzenes having a C.sub.2 -C.sub.8 -alkyl radical until the content of trichloroalkylnitrobenzenes is at least 60% by weight in the chlorination mixture, removing the catalyst from the chlorination mixture, then hydrolyzing the chlorination mixture, removing the precipitated reaction product, and treating it with an aqueous inorganic acid. The 2,4-dichloro-3-alkyl-6-nitrophenols are new.

REFERENCES:
patent: 3363010 (1968-01-01), Schwertzenbek
patent: 3413341 (1968-11-01), Bursack
patent: 3772002 (1973-11-01), Ramello
patent: 3903178 (1975-09-01), Nakumura et al.
patent: 3928470 (1975-12-01), Soula
patent: 4038328 (1977-07-01), Pelster
patent: 4310711 (1982-01-01), Muller et al.
patent: 4489210 (1984-12-01), Judat et al.
Chemical Abstracts, vol. 95, No. 9, 8/31/81, p. 728, No. 80326k.
Chemical Abstracts, vol. 82, No. 13, 3/31/75, p. 504, No. 86163h.

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