Synthesis of linear and cyclic compounds containing the 3,4-bis(furazan-3-yl)furoxan fragment
作者:A. I. Stepanov、A. A. Astrat’ev、D. V. Dashko、N. P. Spiridonova、S. F. Mel’nikova、I. V. Tselinskii
DOI:10.1007/s11172-012-0132-4
日期:2012.5
transformations of 3,4-bis(4-aminofurazan-3-yl)furoxan (1) and 3,4-bis-(4-nitrofurazan-3-yl)furoxan (2) were considered. Compounds 1 and 2 are valuable synthons for the preparation of linear and cycliccompoundscontaining the 3,4-bis(furazan-3-yl)furoxan fragment. The reaction of compound 2 with a series of N- and O-nucleophiles afforded novel heterocyclic systems: 7-R-7H-difurazano[3,4-b:3′,4′-f]furoxano[3″
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
作者:A. I. Stepanov、D. V. Dashko、A. A. Astrat’ev
DOI:10.1007/s10593-013-1345-7
日期:2013.10
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
结果表明,7-R-7 H -tris [1,2,5]恶二唑[3,4- b:3',4'- d:3″,4″ -f ] azepine 1的衍生物还原在钯/碳存在下,通过水合肼或氢产生的二氧化氮伴随着起始化合物的呋喃环对两个氨基的开环,并导致生成4-R-4 H -bis [1,2, 5]恶二唑并[3,4- b:3',4' - f ]氮杂环庚烷-8,9-二胺。讨论了所得二氨基化合物的一些化学性质。
Unusual reaction of 3,4-bis(3-nitrofurazan-4-yl)furoxan with ammonia, primary amines and hydrazine
The nucleophilic displacement of two nitro groups in 3,4-bis(3-nitrofurazan-4-yl)furoxan with ammonia, primary aliphatic amines and hydrazine leads to formation of a novel heterocyclic system, 7H-tris[1,2,5]oxadiazolo[3,4-b:3′,4′-d:3″,4″-f]azepine. The reaction of compound 1 with secondary aliphatic amines proceeds in a typical way for nitrofurazans when the nitro-group in the starting compound is