The present invention provides a new process for large-scale preparation of substituted imidazopyridine compound of formula (I) wherein R
1
is C
1
-C
6
alkoxy or NH
2
group, comprising the step of reacting a compound of formula (2) with a 3-halo-2-butanone compound in cyclohexanone.
本发明提供了一种用于大规模制备公式(I)中R1为C1-C6烷氧基或NH2基的取代
咪唑吡啶化合物的新工艺,包括将公式(2)的化合物与3-卤代-2-
丁酮化合物在
环已酮中反应的步骤。