It was shown that the reduction of derivatives of 7-R-7H-tris[1,2,5]oxadiazolo[3,4-b:3′,4′-d:3″,4″-f]azepine 1-oxide by hydrazine hydrate or hydrogen in the presence of palladium on carbon is accompanied by opening of the furoxan ring of the starting compound to the two amino groups and leads to the production of 4-R-4H-bis[1,2,5]oxadiazolo[3,4-b:3′,4′-f]azepine-8,9-diamines. Some chemical properties of the obtained diamino compounds are discussed.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 7, pp. 1145–1159, July, 2013.
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Stepanov, A.I., Dashko, D.V. & Astrat’ev, A.A. Reduction of 7-R derivatives of 7H-tris[1,2,5]oxa-diazolo[3,4-b:3′,4′-d:3″,4″-f]azepine 1-oxide with furoxan ring opening. preparation of 4-R-4H-bis-[1,2,5]oxadiazolo[3,4-b:3′,4′-f]azepine-8,9-diamines. Chem Heterocycl Comp 49, 1068–1081 (2013). https://doi.org/10.1007/s10593-013-1345-7
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DOI: https://doi.org/10.1007/s10593-013-1345-7