A simple, industrial process for the preparation of the intermediates of acetyl cholinesterase inhibitors is provided. Thus, for example, 5,6-dimethoxy-2-(4-pyridyl)methyl-1-indanone is hydrogenated using platinum oxide catalyst in the presence of hydrochloric acid under a pressure of 2 bars to give 4-[(5,6-dimethoxy-1-indanon)-2-yl] methylpiperidine hydrochloride, which is then converted to donepezil hydrochloride, an acetyl cholinesterase inhibitor.
提供了一种简单的工业过程,用于制备
乙酰胆碱酯酶抑制剂的中间体。例如,使用
铂氧化物催化剂在氢
氯酸存在下,在2个大气压下加氢5,6-二甲氧基-2-(4-
吡啶基)甲基-
1-茚酮,得到4-[(5,6-二甲氧基-
1-茚酮)-2-基]甲基
哌啶盐酸盐,然后转化为
多奈哌齐盐酸盐,一种
乙酰胆碱酯酶抑制剂。