| abstract |
The invention relates to 2-benzylthio-8-amino[1,2,4]triazolo[1,5-a]pyridinesnand a process for the preparationnthereof. These compounds can be used for the preparation ofn2-benzylthio[1,2,4]triazolo[1,5-a]pyridine compounds, whichnare important intermediates in the preparation of N-aryl[1,2,4]triazolo[1,5-a]pyridines. n The reaction is generally carried out by combiningnone molar equivalent of a 2-benzylthio-8-chloro[1,2,4]triazolo[1,5-a]pyridinencompound with at least 3 molarnequivalents of stannous chloride, one molar equivalent ofnstannic chloride, and an excess of hydrogen chloride or atnleast one molar equivalent of the alcohol. |