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公开(公告)号:DE59800397D1
公开(公告)日:2001-02-01
申请号:DE59800397
申请日:1998-01-29
Applicant: BASF AG
Inventor: FREDE DR , DULLY CHRISTIAN , DITRICH DR , MELDER JOHANN-PETER , WEYER DR , WEITZE ACHIM
IPC: C12P41/00 , B01D61/44 , C07C51/42 , C07C51/43 , C07C59/125 , C07C209/88 , C07C211/27 , C07C211/29 , C25B3/00
Abstract: Purification of alpha , beta , gamma -substituted carboxylic acids of formula (I), their salts and esters or a mixture of these and one or more polyol and one or more aminoalcohol in aqueous solution comprises treatment by electrodialysis. R1 = H, 1-10C alkyl, Na or K ; R2 = H or 1-10C alkyl; R3 = H, 1-10C alkyl (optionally substituted by NH2, OH, 1-4C alkyl, 1-4C alkoxy or halo-substituted phenyl); X = halo (when R3 is absent), N, O, P, S; and m = 0-2. Also claimed are: (i) cleavage of an optically active amide to an optically active amine and (I); and (ii) resolution of a racemic primary or secondary amine by reacting (I) with a hydrolase, separating the unreacted enantiomer of the amine from the amide and hydrolysing the amide to give the amine enantiomer and (I).
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公开(公告)号:DE59701496D1
公开(公告)日:2000-05-31
申请号:DE59701496
申请日:1997-05-21
Applicant: BASF AG
Inventor: HUBER GUENTHER , WEIPER-IDELMANN DR , KRAMER DR , GOLOMBEK DR , FREDE DR , SPISKE DR , SCHEHLMANN KARL HEINZ , STEUER VOLKER
Abstract: Electrochemically reducing an organic compound comprises: contacting the compound with a cathode comprising a support of electrically conducting material and an electrically conducting, cathodically polarised layer formed on this by sedimentation in situ.
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