Process for the preparation of 1-alkylaminoanthraquinones

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

1982-03-25

1984-03-06

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 9724

Patent

active

044353243

ABSTRACT:
Improved process for the preparation of 1-alkylaminoanthraquinones by aminolysis of 1-nitroanthraquinones with alkylamines at elevated temperature in water and organic water-immiscible solvents, in the presence of acid-binding agents, according to which process calcium hydroxide is used as the acid-binding agent.

REFERENCES:
patent: 1404056 (1922-01-01), Portheim
patent: 1931295 (1933-10-01), Meuly
patent: 2185709 (1940-01-01), Ogilvie
patent: 4046785 (1977-09-01), Hirai et al.
patent: 4163947 (1979-08-01), Schroeder et al.

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