Ammonium salts of fluorophthalamic acids and method of preparati

Details Ammonium salts of fluorophthalamic acids and method of preparati Ammonium salts of fluorophthalamic acids and method of preparati

1980-12-29

1983-02-15

Reamer, James H.

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

Organic compounds

Carboxylic acids and salts thereof

544 94, C07C10142

Patent

active

043742661

ABSTRACT:
Ammonium salts of fluorophthalamic acids characterized by the formula ##STR1## wherein n is 1 or 2, are prepared by the steps of (A) reacting a chlorophthalic anhydride of the formula ##STR2## where n is as defined previously, with potassium fluoride or cesium fluoride to form a fluorophthalic anhydride of the formula ##STR3## where n is as previously defined, and (B) reacting the fluorophthalic anhydride with ammonium to form an ammonium salt of a fluorophthalamic acid.

REFERENCES:
patent: 1991790 (1935-02-01), Cook et al.
patent: 2275006 (1942-03-01), Bindler
patent: 3014033 (1961-12-01), Havart et al.
Shiley et al., J. Fluorine Chem., vol. 2, pp. 19-26, (1972/73).
Finger et al., J. Fluorine Chem., vol. 1, pp. 415-425, (1971/72).
Azuma, Chem. Abst., vol. 77, #141417t, (1972).
Panneitz, Chem. Abst., vol. 92, #60321q, (1980).

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