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1-Nitroanthraquinone of good purity was manufd. in .apprx.88% yield by selective nitration of anthraquinone with 100% HNO3 or NO2 in 83-5% HF at 25-35 Deg, cooling to 0 Deg and filtration, optionally with recycling of the HF mother liquor under H2O and by-product removal. [on SciFinder (R)]
Type
patent
EPO Family ID
4374715
Inventors
EPFL units
Patent number | Country code | Kind code | Date issued |
JPS5049268 | JP | A | 1975-05-01 |
FR2240207 | FR | A1 | 1975-03-07 |
DE2438210 | DE | A1 | 1975-02-20 |
BE818651 | BE | A | 1975-02-10 |
Available on Infoscience
February 22, 2006
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