| 摘要 |
The invention relates to 2-benzylthio-8-aminoÄ1,2,4ÜtriazoloÄ1,5-aÜpyridines and a process for the preparation thereof. These compounds can be used for the preparation of 2-benzylthioÄ1,2,4ÜtriazoloÄ1,5-aÜpyridine compounds, which are important intermediates in the preparation of N-arylÄ1,2,4ÜtriazoloÄ1,5-aÜpyridines. The reaction is generally carried out by combining one molar equivalent of a 2-benzylthio-8-chloroÄ1,2,4ÜtriazoloÄ1,5-aÜpyridine compound with at least 3 molar equivalents of stannous chloride, one molar equivalent of stannic chloride, and an excess of hydrogen chloride or at least one molar equivalent of the alcohol. |
