Preparation of 4-amino-3,5,6-trichloropicolinic acid

Details Preparation of 4-amino-3,5,6-trichloropicolinic acid Preparation of 4-amino-3,5,6-trichloropicolinic acid

1981-04-23

1982-06-22

Rotman, Alan L.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

546286, 546326, C07D21355, C07D21357

Patent

active

043363849

ABSTRACT:
In a new method of producing 4-amino-3,5,6-trichloropicolinic acid 3,4,5,6-tetrachloropicolinonitrile is reacted with ammonium hydroxide, preferably at about 130.degree. C. to about 160.degree. C. The free acid is precipitated upon acidification of the reaction mixture and may be recovered therefrom.

REFERENCES:
patent: 3285925 (1966-11-01), Johnston et al.
patent: 3325503 (1967-06-01), Bimber
Wagner & Zook, "Synthetic Organic Chemistry", p. 412, Wiley & Sons Pub., (1953).
Morrison & Boyd "Organic Chemistry," pp. 586-589, Allyn & Bacon Pub. (1973).
McElvain et al., Journal of American Chemical Society, vol. 63, p. 2283, (1941).

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