PROCESS FOR PREPARING N,N,6- TRIMETHYL-2 -(4-METHYLPHENYL)- IMIDAZO- 1,2-A] -PYRIDINE-3- ACETAMIDE AND SALTS THEREOF

摘要

It comprises reducing the hydroxy ester of formula (X) by reacting it in DMF and then with an iminium salt of formula (XIII) formed in situ with thionyl chloride and dimethylformamide, and subsequent reduction with an appropriate reducing agent to form the ester of formula (XII), which is then reacted with dimethylamine in a polyhydroxylated solvent medium at an appropriate temperature.