Preparation of nitrobenzoic and anthranilic acids

Details Preparation of nitrobenzoic and anthranilic acids Preparation of nitrobenzoic and anthranilic acids

1992-07-13

1993-03-30

Shippen, Michael L.

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

Organic compounds

Carboxylic acids and salts thereof

562456, C07C 5116

Patent

active

051985756

ABSTRACT:
Nitrobenzoic acids I ##STR1## (X.sup.1, X.sup.2 =fluorine, chlorine, bromine, hydrogen or nitro) are prepared by oxidizing the corresponding nitrotoluene II ##STR2## with nitric acid in the presence of sulfuric acid and vanadium(V) compounds, and anthranilic acids III ##STR3## (Y.sup.1, Y.sup.2 =fluorine, chlorine, bromine, hydrogen or amino) are prepared from the nitrobenzoic acids I by reduction.

REFERENCES:
patent: 3542858 (1970-11-01), Mulvey
patent: 3723523 (1973-03-01), Horrom
patent: 4454345 (1984-06-01), Jacques
patent: 4994606 (1991-02-01), Fertel

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