METHOD OF PREPARING TETRAHYDROANTHRAQUINONE OR ALKYL DERIVATIVE THEREOF Russian patent published in 1997 - IPC

Abstract RU 2089537 C1

FIELD: chemical industry. SUBSTANCE: product: tetrahydroanthraquinone or alkyl derivative thereof. Reagent 1: anthraquinone alkyl derivative thereof. Reagent 2: hydrogen. Reaction condition: in the presence of nickel catalyst which is first treated with alkali at 107-140 C, monohydric C₂-C₈- alcohol, the resulting suspension is subsequently oxidized and cooled to temperature from minus 10 to plus 20 C at cooling rate of 0.3-1.5 s/min. EFFECT: °more efficient preparation method. 2 cl, 1 tbl

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RU 2 089 537 C1

Authors

Dates

1997-09-10—Published

1993-10-05—Filed