1: 1,4-dihydroxyanthracene-9,10-dione With potassium carbonate in N,N-dimethyl-formamide T=55 - 60°C; 0.5 h; Inert atmosphere; 2: allyl bromide in N,N-dimethyl-formamide T=65 - 70°C; 40 h; Inert atmosphere;

1: 7 percent / 6.5 h / 200 °C 2: 0.7 percent / anhyd. potassium carbonate / acetone / 30.5 h / Heating View Scheme

potassium carbonate in acetone 30.5 h; Heating;

T=200°C; 6.5 h;

acetic anhydride; N,N-diethylaniline T=141°C; 9 h; other anthraquinones, var. reagents, temperatures and reaction time; Product distribution;