EP 1490319 A2 20041229 - METHOD FOR PRODUCING 3-HYDROXY-2-METHYLBENZOIC ACID
Title (en)
METHOD FOR PRODUCING 3-HYDROXY-2-METHYLBENZOIC ACID
Title (de)
VERFAHREN ZUR HERSTELLUNG VON 3-HYDROXY-2-METHYLBENZOES URE
Title (fr)
PROCEDE DE PRODUCTION D'ACIDE 3-HYDROXY-2-METHYLBENZOIQUE
Publication
Application
Priority
- DE 10212885 A 20020322
- EP 0302415 W 20030310
Abstract (en)
[origin: WO03080542A2] The invention relates to a method for producing 3-hydroxy-2-methylbenzoic acid or solutions containing salts of 3-hydroxy-2-methylbenzoic acid, with naphthalene as the starting substance. Said method essentially comprises the following steps: sulfonation, reaction with alkalis at high temperatures and the expedient preparation of the resultant reaction mixture.
IPC 1-7
C07C 51/31; C07C 65/21; C07C 309/35; C07C 69/157; C07C 65/03; A01N 31/00; C07C 67/08; C07C 69/86
IPC 8 full level
C07C 51/31 (2006.01); C07C 65/21 (2006.01); C07C 67/08 (2006.01); C07C 69/157 (2006.01); C07C 303/06 (2006.01); C07C 309/35 (2006.01)
CPC (source: EP US)
C07C 51/31 (2013.01 - EP US); C07C 65/21 (2013.01 - EP US); C07C 303/06 (2013.01 - EP US)
Citation (search report)
See references of WO 03080542A2
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 03080542 A2 20031002; WO 03080542 A3 20040115; AU 2003218717 A1 20031008; AU 2003218717 A8 20031008; CN 1642895 A 20050720; DE 10212885 A1 20031002; EP 1490319 A2 20041229; US 2005222455 A1 20051006
DOCDB simple family (application)
EP 0302415 W 20030310; AU 2003218717 A 20030310; CN 03806627 A 20030310; DE 10212885 A 20020322; EP 03711957 A 20030310; US 50787504 A 20040915