EP 1242353 A1 20020925 - PROCESS FOR THE RECOVERY AND RECYCLE OF D-TARTARIC ACID
Title (en)
PROCESS FOR THE RECOVERY AND RECYCLE OF D-TARTARIC ACID
Title (de)
VERFAHREN ZUR GEWINNUNG UND WIEDERVERWENDUNG VON D-WEINSÄURE
Title (fr)
PROCEDE DE RECUPERATION ET DE RECYCLAGE D'ACIDE D-TARTRIQUE
Publication
Application
Priority
- EP 0012946 W 20001219
- US 17337299 P 19991228
- US 47364899 A 19991229
Abstract (en)
[origin: WO0147856A1] There is provided a process for the recovery of essentially enantiomerically pure D-tartanic acid from aqueous and organic waste streams generated in the resolution of racemic 2-amino-2,3-dimethylbutyronitrile via the formation and isolation of a crystalline monobasic tartrate salt. The recovered optically pure D-tartaric acid may be efficiently recycled to provide a sustainable resolution of racemic 2-amino-2,3-dimethylbuty-ronitrile.
IPC 1-7
C07C 51/02; C07C 51/41; C07C 51/43; C07C 59/255; C07C 253/34
IPC 8 full level
C07C 51/02 (2006.01); C07C 51/41 (2006.01); C07C 51/43 (2006.01); C07C 253/34 (2006.01); C07C 255/25 (2006.01)
CPC (source: EP)
C07C 51/02 (2013.01); C07C 51/412 (2013.01); C07C 51/43 (2013.01); C07C 253/34 (2013.01); C07B 2200/07 (2013.01)
Citation (search report)
See references of WO 0147856A1
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 0147856 A1 20010705; AR 027145 A1 20030312; AU 3160601 A 20010709; BR 0016803 A 20020910; CN 1414939 A 20030430; EP 1242353 A1 20020925; IL 150155 A0 20021201
DOCDB simple family (application)
EP 0012946 W 20001219; AR P000107007 A 20001228; AU 3160601 A 20001219; BR 0016803 A 20001219; CN 00817998 A 20001219; EP 00991215 A 20001219; IL 15015500 A 20001219