Process for the preparation of haloanthranilic acids

Details Process for the preparation of haloanthranilic acids Process for the preparation of haloanthranilic acids

1995-01-13

1998-04-28

Siegel, Alan

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

Organic compounds

Carboxylic acids and salts thereof

562458, 564407, C07C22900

Patent

active

057446385

ABSTRACT:
The present invention relates to a process for the preparation of compounds of the general formula I ##STR1## in which X and Y, independently of each other, represent hydrogen, fluorine, chlorine or bromine, but cannot simultaneously represent hydrogen, characterised in that compounds of the general formula II ##STR2## in which X and Y are defined as above, are reacted with aqueous ammonia under copper catalysis, and to intermediates for the preparation of compounds of the general formula I.

REFERENCES:
patent: 4939290 (1990-07-01), O'Neill
patent: 4950813 (1990-08-01), Doscher et al.
patent: 5064958 (1991-11-01), O'Neill
Comptes Rendues, 202:1795-96 (1936).
Derwent Database, JP 4 356 449.
Methoden der Organischen Chemie, vol. 11, pp. 32-33 and 63-68.

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