1,5-Disubstituted 1,2,3-triazoles are formed through a novel domino reaction involving the addition of aromatic azides to an excess of allenylmagnesium bromide with concomitant N-C heterocyclization followed by the addition of another mole of allenylmagnesium species to generate the terminal acetylenic product in moderate to high yields.
                                    1,5-二取代的
1,2,3-三唑通过一种新颖的多步反应形成,该反应涉及芳香烯基
叠氮化物与过量的
丙炔镁溴化物的加成,同时进行N-C杂环化,再加上另一摩尔的
丙炔镁物种,以产生终端
炔烃产物,产率中等到高。