METHOD FOR PRODUCING 5-HALO-2,4,6-TRIFLUOROISOPHTHALIC ACID
Application 2961/KOLNP/2007 published 2007-09-14, filed 2007-08-13
A process for preparing 5-halo-2,4,6-trifluoroisophthalic acid of the formula I where X is F, Cl, Br, or I by hydrolysis of 5-halo-2,4,6-trifluoroisophthalodinitrile of the formula II in which, in a first step to form 5-halo-2,4,6-trifluoroisophthalodiamide of the general formula III isophthalonitrile (II) or a solution comprising isophthalonitrile (II) is admixed with concentrated sulfuric acid at room temperature and subsequently heated, and, in a second step with further heating and addition of water, isophthalic acid (I) is prepared.
Applicant
1)BASF AKTIENGESELLSCHAFT
:67056 LUDWIGSHAFEN Germany
Inventor
1)RACK MICHAEL 2)SMIDT SEBASTIAN PEER 3)BUDICH MANUEL 4)MAYWALD VOLKER 5)KEIL MICHAEL 6)WOLF BERND
International Info
Classification: C07C 51/08
Publication Number: WO 2006/097510
Application Date: 2006-03-16
Priority Information
102005013038.0 Germany 2005-03-18