The present invention relates to an improved process for the preparation of 2-[6-methyl- 2-(4-methyl-phenyl)-imidazo [ 1,2-a]pyridin-3-yl] -acetic acid and further conversion of the said compound to tartarate salt of 6-methyl-2-[4-methylphenyl] imidazo [I, 2-a] pyridine- 3 -N, N-dimethyl acetamide [Zolpidem].
本发明涉及一种改进的制备2-[6-甲基-2-(4-甲基苯基)-
咪唑[1,2-a]
吡啶-3-基]-
乙酸和进一步将该化合物转化为6-甲基-2-[4-甲基苯基]
咪唑[1,2-a]
吡啶-3-N,N-二甲基乙酰胺酯[
唑吡坦]
酒石酸盐的方法。