C - Chemistry – Metallurgy – 07 – D
Patent
C - Chemistry, Metallurgy
07
D
C07D 307/32 (2006.01) C07D 307/33 (2006.01)
Patent
CA 2311426
The invention relates to a method for separating contaminants from 3-(2'- acetoxy-ethyl-dihydro-2(3H)furanone (I), whereby the 3-(2'-acetoxy-ethyl- dihydro-2(3H)furanone containing the undesired contaminants is first produced using known methods by acetylization of 3-(2'-hydroxy-ethyl-dihydro- 2(3H)furanone and is subsequently treated with strong mineral acids. Finally, the decomposition products of the undesired contaminants of (I) are separated.
L'invention concerne un procédé pour la séparation d'impuretés dans de la 3-(2'-acétoxyéthyl)-dihydro-2 (3H) furanone (I), dans lequel la 3-(2'-acétoxyéthyl)-dihydro-2 (3H) furanone contenant les impuretés indésirables est tout d'abord préparée de manière connue en soi par acétylation de 3-(2'-hydroxyéthyl)-dihydro-2 (3H) furanone et ensuite traitée avec des acides minéraux forts, et finalement les produits de décomposition des impuretés indésirables sont séparés de (I).
Borchers Dirk
Gotz Norbert
Hartmann Horst
Konig Hartmann
Kukenhohner Thomas
Basf Aktiengesellschaft
Robic
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