PROCESS FOR PREPARING PYRIDINE-SUBSTITUTED AMINO KETAL DERIVATIVES
Application 1836/CHENP/2005 published 2007-04-06, filed 2005-08-05
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.
Applicant
1)AVENTIS PHARMA DEUTSCHLAND GMBH
:Bruningstrasse 50, 65929 Frankfurt Germany
Inventor
1)FLEMMING, Hans-Wolfram 2)KORB, Gerhard 3)MUELLER-LEHAR, Juergen 4)WEBER, Walter No of Pages : 25 No of Claims : 19
International Info
Classification: C07D 213/51 /C07D 21
Publication Number: WO/04/72026
Application Date: 2004-01-27
Priority Information
103 05 391.3 Germany 2003-02-11