prepared in one single synthetic step exploiting the combination of (Z)-chlorooximes, isocyanides and trimethylsilyl azide. The formal [3+1] cycloaddition between isocyanides and nitrile N-oxides with respect to the [3+1] cycloaddition between isocyanides and azides prevails, while the direct attack of azide onto nitrile N-oxides remains competitive. Finally, an intramolecular cyclization of a (1H-tetrazol-5-yl)methanone
利用(Z)-
氯肟,异
氰化物和三甲基
硅烷基
叠氮化物的组合,在一个单一的合成步骤中制备了二十种装饰不同的1,5-二取代-(1 H-
四唑-5-基)甲酮
肟的文库。相对于
异氰酸酯和
叠氮化物之间的[3 + 1]环加成,
异氰酸酯和腈N-氧化物之间的正式的[3 + 1]环加成占主导,而
叠氮化物对腈N-氧化物的直接攻击仍然具有竞争力。最后,首次报道了(1 H-
四唑-5-基)甲酮
肟的分子内环化为苯并
异恶唑四唑。