Process for the preparation of mononitro-1,2,3,4-tetrahydroanthr

Details Process for the preparation of mononitro-1,2,3,4-tetrahydroanthr Process for the preparation of mononitro-1,2,3,4-tetrahydroanthr

1980-01-14

1981-08-11

Garvin, Patrick

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

C07C 5018

Patent

active

042833450

ABSTRACT:
A process is disclosed for the preparation of mononitro derivatives of 1,2,3,4-tetrahydro-anthraquinone from 1,4,4a,9a-tetrahydro-anthraquinone, in which a thermal pretreatment of the 1,4,4a,9a-tetrahydro-anthraquinone is carried out in the presence of a hydrogenation catalyst in an inert atmosphere and in the absence of oxidizing or reducing agents, the anthraquinone by-produced as well as the catalyst are separated and the mixture of 1,2,3,4-tetrahydro-9,10-anthracenediol and 1,2,3,4-tetrahydro-anthraquinone obtained is subjected to a nitration reaction.

REFERENCES:
patent: 2495229 (1950-01-01), Pawsey et al.
patent: 3959318 (1976-05-01), Torisa et al.

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