Treatment of 4arylaao-2-phenyloxazoline-5-ones (Va-d) with organomagnesium compounds, followed by hydrolysis, effected the opening of the heterocyclic ring and cyclization to the corresponding l-aryl-5-phenyl-3-diarylmethanol-lH-1, 2, 4triazolea (VId-h). Similarly, Va-d are rapidly rearranged by the action of piperidine and by the action of aromatic thiols to give l-aryl-5-phenyl-3-carbpiperid~ 1H-1, 2, 4-triazoles (VIIa-d) and l-aryl ...
