1,4,4a,9a-Tetrahydroanthraquinone → HCID 18688925, compound

Participants

Reaction Conditions

Reaction Steps

300 ml of acetic acid, 64 g of 1,4,4a,9a-tetrahydro-anthraquinone and 0.6 g of a catalyst containing 5% of palladium deposited on charcoal are introduced into an autoclave. The charge is heated to 100° C. and hydrogen is introduced under a pressure of 30 bars. The reaction is continued for 4 hours while maintaining the pressure at between 20 and 30 bars. After cooling, the precipitate obtained is separated by filtration, washed with water and dried. 56 Grams of 1,2,3,4-tetrahydro-9,10-anthracene-diol (melting point 210°-212° C.) are obtained. The yield is 86.7% without taking into account the fraction of product remaining in solution in the acetic acid.

Provenance & Evidence