EP 1863752 A1 20071212 - METHOD FOR PRODUCING 5-HALO-2,4,6-TRIFLUOROISOPHTHALIC ACID
Title (en)
METHOD FOR PRODUCING 5-HALO-2,4,6-TRIFLUOROISOPHTHALIC ACID
Title (de)
VERFAHREN ZUR HERSTELLUNG VON 5-HALO-2,4,6-TRIFLUORISOPHTHALSÄURE
Title (fr)
PROCEDE DE PRODUCTION D'ACIDE 5-HALO-2,4,6-TRIFLUOROISOPHTALIQUE
Publication
Application
Priority
- EP 2006060793 W 20060316
- DE 102005013038 A 20050318
Abstract (en)
[origin: WO2006097510A1] The invention relates to a method for producing 5-halo-2,4,6-trifluoroisophthalic acid of formula (I), wherein X represents F, Cl, Br, or I, by hydrolysis of 5-halo-2,4,6-trifluoroisophthalodinitrile of formula (II). Said invention is characterised in that in a first step, isophthalodinitrile (II) or a solution containing isophthalodinitrile (II) is reacted with a concentrated sulphuric acid at room temperature in order to form a 5-haIo-2,4,6-trifluoroisophthalodiamide of general formula (III), and is, subsequently, heated and in a second step, isophthalic acid (I) is produced after additional heating and addition of water.
IPC 8 full level
C07C 51/08 (2006.01); C07C 17/23 (2006.01); C07C 17/363 (2006.01); C07C 25/13 (2006.01); C07C 63/70 (2006.01)
CPC (source: EP US)
C07C 17/23 (2013.01 - EP US); C07C 17/363 (2013.01 - EP US); C07C 25/13 (2013.01 - EP US); C07C 51/08 (2013.01 - EP US)
C-Set (source: EP US)
Citation (search report)
See references of WO 2006097510A1
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2006097510 A1 20060921; AR 053831 A1 20070523; BR PI0608712 A2 20101207; CN 101287695 A 20081015; EP 1863752 A1 20071212; IL 185217 A0 20080209; IL 185217 A 20101230; JP 2008533099 A 20080821; US 2008146839 A1 20080619
DOCDB simple family (application)
EP 2006060793 W 20060316; AR P060101057 A 20060317; BR PI0608712 A 20060316; CN 200680006766 A 20060316; EP 06725104 A 20060316; IL 18521707 A 20070813; JP 2008501318 A 20060316; US 90887006 A 20060316