反应详情

24.8 g of crude 5-nitronaphthoquinone (comprised of 82 wt% of 5-nitronaphthoquinone and 10 wt% of 6-nitronaphthoquinone), 12.1 g of 1,3-butadiene, and 124 g of ethanol were introduced into an autoclave. The autoclave was hermetically sealed and the reaction was effected at about 80°C for 2.5 hours. The resultant reaction solution was cooled to 25°-30°C to crystalize 5-nitrotetrahydroanthraquinone, and filtered. The cake was washed with 40 g of ethanol and dried to obtain 22.9 g of 5-nitrotetrahydroanthraquinone. The yield was 89.0%.

1. customThe autoclave was hermetically sealed
2. customThe resultant reaction solution
3. temperaturewas cooled to 25°-30°C
4. customto crystalize 5-nitrotetrahydroanthraquinone
5. filtrationfiltered
6. washThe cake was washed with 40 g of ethanol
7. customdried