申请人:Aventis Pharma Deutschland GmbH
公开号:US20040158073A1
公开(公告)日:2004-08-12
The present invention relates to an efficient process for preparing derivatives of 1-(pyridinyl)-1,1-dialkoxy-2-aminoethane of the formula (I), with which compounds of the formula (I) can be prepared in high purity and yield and in the form of the free base without isolating the acetylpyridine oxime of the formula (XI) which is a critical product from a safety point of view as a solid.
1
本发明涉及一种高效的方法,用于制备1-(吡啶基)-1,1-二烷氧基-2-氨基乙烷的衍生物,其化合物可以高纯度和高产率地制备,并以游离碱的形式存在,而无需从安全角度考虑的乙酰吡啶肟的固体化合物(化学式(XI))。