| 摘要 |
A novel process for the preparation of imidazopyridines of the general formula <IMAGE> wherein the radicals R1 to R4 have the meaning indicated in the description, is described. In the key step of the process an alkoxyimidate of the formula <IMAGE> is cyclised with aminoacetonitrile and with a 1,3-dicarbonyl compound of the general formula <IMAGE> The imidazopyridines are useful intermediates for the preparation of angiotensin II antagonists. |
