反应详情

41.3 g of a crude 5-nitronaphthoquinone cake (having a water content of 40 wt% and a dry weight of 24.8 g, and comprised of 75 wt% of 5-nitronaphthoquinone and 15 wt% of 6-nitronaphthoquinone when determined under dried conditions), 13.1 g of 1,3-butadiene and 124 g of trichloroethylene were introduced into an autoclave. The autoclave was hermetically sealed and the reaction was effected at 80°C for 2.5 hours. Then, Example 1 was repeated to obtain 20.7 g of 5-nitrotetrahydroanthraquinone. The yield was 88.0%. The thus obtained 5-nitrotetrahydroanthraquinone was oxidized and reduced in accordance with the standard method to obtain 1-aminoanthraquinone having a purity above 98 wt% and a 2-aminoanthraquinone content of 0.5 wt%.

1. additionwere introduced into an autoclave
2. customThe autoclave was hermetically sealed