Characterization of the products derived from the nitration of 1,5-dihydroxyanthraquinone (anthrarufin) and 1,8-Dihydroxyanthraquinone (cas 117-10-2) (chrysazin)
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Add time:08/25/2019 Source:sciencedirect.com
When 1,5-dihydroxyanthraquinone (Anthrarufin) and 1,8-Dihydroxyanthraquinone (cas 117-10-2) (Chrysazin) were nitrated using a mixture of concentrated sulfuric and nitric acids in the presence of boric acid at 10–25° C, three major products formed in each reaction. The products were separated by low-pressure column chromatography and identified by 1H-NMR and mass spectrometric analyses in tandem. The products identified result from the mono-, di- and tetra-nitration of these dihydroxyanthraquinones.
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