METHOD FOR PRODUCING 2-CYAN-3-HYDROXY-N-
Application 2273/CHENP/2005 published 2007-07-20, filed 2005-09-15
The invention relates to a method for obtaining cyan-3-hydroxy-N-(phenyl)but-2-ene amide, whereby a phenyl-substituted 2-cyan-N-(Phenyl)acetamide is converted in the presence of a base, acetic acid anhydride and at least one solvent, and the 2-cyan-3-hydroxy-N-(phenyl-derivative)but-2-ene amide obtained is crystallized by means of acidification.
Applicant
1)AVENTIS PHARMA DEUTSCHLAND GMBH
:BRUNINGSTRASSE 50, D-65929 FRANKFURT AM MAIN, GERMANY Germany
Inventor
1)HACHTEL, JOCHEN 2)NEISES, BERND 3)SCHWAB, WILFRIED 4)UTZ, ROLAND 5)ZAHN, MARTIN
International Info
Classification: C07C 253/30
Publication Number: WO 2004/083165 A1
Application Date: 2004-03-06
Priority Information
103 11 763.6 Germany 2003-03-18