公开(公告)号：CA2311426A1

公开(公告)日：1999-06-17

申请号：CA2311426

申请日：1998-12-02

Applicant: BASF AG

Inventor： WAGNER RUPERT ,  HARTMANN HORST ,  KONIG HARTMANN ,  GOTZ NORBERT ,  MAYWALD VOLKER ,  KUKENHOHNER THOMAS ,  BORCHERS DIRK

IPC: C07D307/32 ,  C07D307/33 ,  C07D407/04

Abstract: 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.

公开(公告)号：AU1758299A

公开(公告)日：1999-06-28

申请号：AU1758299

申请日：1998-12-02

Applicant: BASF AG

Inventor： MAYWALD VOLKER ,  GOTZ NORBERT ,  KUKENHOHNER THOMAS ,  BORCHERS DIRK ,  KONIG HARTMANN ,  HARTMANN HORST ,  WAGNER RUPERT

IPC: C07D307/32 ,  C07D307/33 ,  C07D407/04

Abstract: A process for removing impurities from 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone (I), which comprises initially preparing the 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone containing the undesirable impurities in a manner known per se by acetylating 3-(2'-hydroxylethyl)-dihydro-2(3H)-furanone, subsequently treating it with strong mineral acids and finally removing the decomposition products of the undesirable impurities from I.

公开(公告)号：SK6352000A3

公开(公告)日：2001-02-12

申请号：SK6352000

申请日：1998-12-02

Applicant: BASF AG

Inventor： MAYWALD VOLKER ,  GOTZ NORBERT ,  KUKENHOHNER THOMAS ,  BORCHERS DIRK ,  KONIG HARTMANN ,  HARTMANN HORST ,  WAGNER RUPERT

IPC: C07D307/32 ,  C07D307/33 ,  C07D407/04

Abstract: A process for removing impurities from 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone (I), which comprises initially preparing the 3-(2'-acetoxyethyl)-dihydro-2(3H)-furanone containing the undesirable impurities in a manner known per se by acetylating 3-(2'-hydroxylethyl)-dihydro-2(3H)-furanone, subsequently treating it with strong mineral acids and finally removing the decomposition products of the undesirable impurities from I.