申请人:CL Pharma Aktiengesellschaft
公开号:US05066810A1
公开(公告)日:1991-11-19
A process for the preparation of compounds of formula I ##STR1## in which X is the radical OH or Cl, by the catalytic hydrogenation of 3,5-dimethyl-4-methoxy-2-cyanopyridine, subsequent reaction of the resulting 3,5-dimethyl-4-methoxy-2-aminomethylpyridine to give 3,5-dimethyl-4-methoxy-2-hydroxymethylpyridine and, if desired, chlorination to give 3,5-dimethyl-4-methoxy-2-chloromethylpyridine, and the novel intermediate 3,5-dimethyl-4-methoxy-2-aminomethylpyridine.
一种制备化合物I的方法,其中X为OH或Cl基团,通过对3,5-二甲基-4-甲氧基-2-氰基吡啶进行催化氢化,随后对得到的3,5-二甲基-4-甲氧基-2-氨甲基吡啶进行反应得到3,5-二甲基-4-甲氧基-2-羟甲基吡啶,如有需要,进行氯化得到3,5-二甲基-4-甲氧基-2-氯甲基吡啶,以及新型中间体3,5-二甲基-4-甲氧基-2-氨甲基吡啶。