METHOD TO PRODUCE 3, 4-BIS(3-AMINOFURAZAN-4-YL)-FURAZAN AND ITS N, N'-DIACYL DERIVATIVES Russian patent published in 2013 - IPC C07D271/08 

FIELD: biotechnologies.

SUBSTANCE: invention relates to the method of production of a heterocyclic compound, namely 3,4-bis(3-aminofurazan-4-yl)-furazan of the formula consisting in successive performance of recovery of furoxane (1,2,5-oxadiazol-2-oxide) cycle of compound 3,4-bis(3-aminofurazan-4-yl)furoxane to dioxime 1,2-bis-(4-aminofurazan-3-yl)-ethane-1,2-dione (3) with hydrazine or hydrogen in presence of a recovery catalyst containing metals of the platinum group: palladium, platinum, deposited onto standard carriers, selected from the following: for instance, activated carbon, carbon soot, barium sulfate, aluminium oxide, silica gel or skeleton Raney nickel with subsequent dehydration of the produced dioxime by dehydration agents, namely, action of anhydrides of carbonic acids, chloroanhydrides of inorganic acids, to 3,4-bis(3-aminofurazan-4-yl)-furazan (1) or its N,N'-diacyl derivative.

EFFECT: improved properties of compounds.

8 cl, 12 ex