One-pot three-component green synthesis of [1 H -(1,2,3-triazol-5-yl)methylidene] heterocycles based on element-substituted propynals

The one-pot three-component synthesis of polyfunctional bis-heterocyclic triazoles, namely, previously unknown 1H-1,2,3-triazolylmethylidenepyrimidines and -1,3-dioxanes, was performed for the first time in moderate or high yields starting from element-substituted propynals, trimethylsilyl azide, and heterocyclic CH-acids at room temperature in aqueous medium.