The synthesis of ethyl 2-formyl-4-benzylfuro[3,2-b]pyrrole-5-carboxylate (I) is described. A series of furo[3,2-b]pyrrole-2-carbaldehyde 2,6-dialkylphenylhydrazones (IIa - IIg) and dimethylhydrazones (IIIa - IIId) were prepared. By reaction of title compounds with hydroxylammonium chloride in acetic anhydride in the presence of pyridine corresponding cyano-substituted compounds (IVa - IVd) were obtained. Alkaline hydrolysis of IVa - IVd gave Va - Vb and the reaction with sodium azide and ammonium chloride in dimethylformamide led to VIa - VId. the structure of the compounds have been proved by UV, IR, 1H and 13C NMR spectra.
描述了乙酸2-甲酰基-4-苄基呋喃[3,2-b]吡咯-5-羧酸乙酯(I)的合成。制备了一系列呋喃[3,2-b]吡咯-2-甲醛2,6-二烷基苯肼酮(IIa - IIg)和二甲基肼酮(IIIa - IIId)。通过将标题化合物与乙酸酐中的羟胺盐和吡啶反应,在生成的氰基取代化合物(IVa - IVd)中。对IVa - IVd进行碱性水解得到Va - Vb,并在二甲基甲酰胺中与叠氮化钠和氯化铵反应得到VIa - VId。这些化合物的结构已通过UV、IR、1H和13C NMR谱证明。