Hi Philou, I came across this compound while trying to find out about another compound with a very similar "trivial" name "chrysanisic acid" that is
3,5-dinitro-4-aminobenzoic acid. Your compound can be prepared from brown Aloes resin by the action of nitric acid and this reaction is actually used
as a test for the active ingredient of the resin, barbaloin. It is a derivative of 1,8-dihydroxyanthraquinone. Reduction and degradation of the
chrysamminic acid gives the 1,8-dihydroxyanthraquinone.
The nitro grounds are highly reactive and easily substituted by other groups. I didn't try making though aloes resin is easily obtained from the
internet. Mind you so is 1,8-dihydroanthraquinone which is used as a laxative I believe. |