Process for the preparation of 1-aminoanthraquinones

Details Process for the preparation of 1-aminoanthraquinones Process for the preparation of 1-aminoanthraquinones

1977-09-20

1982-05-04

Douglas, Winston A.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

260384, 260371, 260373, 260380, 260381, C07C 9724, C07C 9726, C07C143665

Patent

active

043281613

ABSTRACT:
A selective process for the preparation of 1-aminoanthraquinones from the corresponding 1-aminoanthraquinone-2-carboxylic acid by decarboxylation in an acid solution in the presence of iron or zinc as a catalyst.

REFERENCES:
patent: 1551373 (1925-08-01), Daudt
patent: 1966067 (1934-07-01), Jaeger
patent: 2499003 (1950-01-01), Scalera
patent: 2659738 (1953-11-01), Schlichting et al.
patent: 3978096 (1976-08-01), Eilingsfeld et al.
Methoden der Organischen Chemie, Houben-Weyl vol. 8, pp. 484-496.
Journal of the Society of Dyers & Colorists, vol. 66, pp. 229-231, Apr. 1950 "Aromatic Nitro Compounds" Hodgson, Heyworth & Word.
Chemical Abstracts, vol. 71, 1969 Abstract No. 48900m, Long, "Mechanisms for Decarboxylation of Aromatic Acids".
Chemical Abstracts, vol. 74, 1974 Abstract No. 52664s, p. 268, Manikyam "Thermal decarboxylation of Benzoic Acids".
Chemical Abstracts vol. 74, 1971 Abstract No. 640020s, p. 287 Chodowska-Palicka, "Decarboxylation of 2-Nitro Benzoic Acids".
Chemical Abstracts, vol. 67, 1967 Abstract No. 43191n, p. 4036 Rekkev et al. "Decarboxylation of substituted 4-Aminobenzoic Acid in Aqueous Solution".
Chemical Abstracts, vol. 85, 1976 Abstract, No. 177120v, p. 495, Morley "Synthesis of Aminoanthraquinones by Sodium Borohydride Reduction of Nitroanthraguinones".
Chemical Abstracts, vol. 81, 1974, abstract No. 27, 207q; Schuhmacher, A. Kohlhaupt, R; Hiller, H. "1-Nitro-2-anthraquinone carboxylic acid".
Chemical Abstracts, vol. 85, 1976, p. 495, Abstract No. 177,124z; Morley O., "Synthesis of Aminoanthraquinone by Sodium Borohydride Reductions of Nitroanthraquinones".

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