The present invention relates to a process for the preparation of donepezil hydrochloride o formula (I) which comprises the steps of condensing a pyridinium bromide salt of formula (IV) with dimethoxy-indanone of formula (V) and reducing the resulting condensed bromide salt of formula (VI) in two steps. The present invention further relates to a di-ene intermediate of formula (VII).
本发明涉及一种制备
多奈哌齐盐酸盐的方法,其公式为(I),包括以下步骤:将公式为(IV)的
吡啶溴化物盐与公式为(V)的二甲氧基
茚酮缩合,然后用两步还原法还原所得的缩合
溴化物盐,本发明还涉及公式为(VII)的二烯中间体。