Synthesis of aminocyclitols.

Ruey-Jiin. Yu
Part I. The catalytic hydrogenation of 4,6-dinitropyrogallol was investigated under a variety of conditions. Whereas it proved difficult to hydrogenate the benzene ring with palladium catalysts, the use of platinum catalyst led to an uptake of nine moles of hydrogen as required for the production of diamino-trihydroxycyclohexanes. The hydrogenation products were isolated as solid hydrochlorides or sulfates in yields of 29--46%. They were shown by paper chromatography to be mixtures of several compounds. Ion exchange...
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