Preparation of 1-nitroanthraquinone-2-carboxylic acid

Details Preparation of 1-nitroanthraquinone-2-carboxylic acid Preparation of 1-nitroanthraquinone-2-carboxylic acid

1989-10-30

1990-08-21

Raymond, Richard L.

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

Organic compounds

Four or more ring nitrogens in the bicyclo ring system

546204, 548528, 552251, C07C26530, C07C20700, C07C 5024, C07C 9724

Patent

active

049507567

ABSTRACT:
1-Nitroanthraquinone-2-carboxylic acid of the formula I ##STR1## is prepared by treating novel 2-substituted 1-nitroanthraquinones of the general formula II ##STR2## where R is --CH.dbd.CH--R.sup.1 or --CH.sub.2 --CHO, where R.sup.1 is C.sub.1 -C.sub.5 -dialkylamino or a cyclic 5- or 6-membered amine which may contain further hetero atoms, with oxidizing agents free of heavy metal.

REFERENCES:
patent: 1540467 (1925-06-01), Fierz
patent: 3211754 (1965-10-01), Klingsberg
Houben/Weyl, Methoden der Organischen Chemie, vol. VII/3c, pp. 255-257, (1979).

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