EP 1521734 A1 20050413 - METHOD FOR THE PRODUCTION OF A DICARBOXYLIC ACID FROM ACRYLIC ACID
Title (en)
METHOD FOR THE PRODUCTION OF A DICARBOXYLIC ACID FROM ACRYLIC ACID
Title (de)
VERFAHREN ZUR HERSTELLUNG EINER DICARBONS URE AUSGEHEND VON ACRYLS URE
Title (fr)
PROCEDE DE PRODUCTION D'UN ACIDE DICARBOXYLIQUE A PARTIR D'ACIDE ACRYLIQUE
Publication
Application
Priority
- DE 10231291 A 20020710
- DE 10240781 A 20020830
- EP 0307151 W 20030704
Abstract (en)
[origin: WO2004007415A1] Disclosed is a method for producing a dicarboxylic acid of formula (I) H-OOC-(n-C4Hx)-COO-H, in which x represents 6 or 8, from acrylic acid. Said method is characterized by the fact that a) a dicarboxylic acid diester of formula (II) R<1>-OOC-(n-C4Hx)-COO-R<2>, in which x represents 6 or 8 and R<1>, R<2> independently represent C1-, C2-, C3-, C4-alkyl, aryl, heteroaryl and can be identical or different, is reacted with acrylic acid so as to obtain a dicarboxylic acid of formula (I) and a mixture of acrylic acid ester of formula C2H3-COOR<1> and C2H3-COOR<2>, in which R<1> and R<2 >have the meanings mentioned above; b) the dicarboxylic acid of formula (I) obtained in step (a) is separated from the reaction mixture obtained in step (a); c) the C2H3-COOR<1>, C2H3-COOR<2>, or the mixtures thereof obtained in step (a) are dimerized so as to obtain n-butene dicarboxylic acid diester; and d) the dicarboxylic acid diester obtained in step (c) is split into the corresponding dicarboxylic acid of formula (I).
IPC 1-7
C07C 51/09; C07C 67/10; C07C 67/343; C07C 67/303; C07C 51/36
IPC 8 full level
C07B 61/00 (2006.01); C07C 51/09 (2006.01); C07C 51/36 (2006.01); C07C 55/14 (2006.01); C07C 67/10 (2006.01); C07C 67/303 (2006.01); C07C 67/347 (2006.01); C07C 69/44 (2006.01)
CPC (source: EP KR US)
C07C 51/09 (2013.01 - EP KR US); C07C 51/36 (2013.01 - EP KR US); C07C 67/10 (2013.01 - EP US); C07C 67/303 (2013.01 - EP US); C07C 67/347 (2013.01 - EP US)
Citation (search report)
See references of WO 2004007415A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2004007415 A1 20040122; AU 2003238065 A1 20040202; BR 0311504 A 20050222; CA 2491280 A1 20040122; CN 1668566 A 20050914; EP 1521734 A1 20050413; JP 2005537260 A 20051208; KR 20050025946 A 20050314; MX PA04012457 A 20050819; MY 134312 A 20071231; TW 200413306 A 20040801; US 2006122425 A1 20060608
DOCDB simple family (application)
EP 0307151 W 20030704; AU 2003238065 A 20030704; BR 0311504 A 20030704; CA 2491280 A 20030704; CN 03816382 A 20030704; EP 03735697 A 20030704; JP 2004520480 A 20030704; KR 20057000312 A 20050107; MX PA04012457 A 20030704; MY PI20032572 A 20030709; TW 92118884 A 20030710; US 51952304 A 20041227