C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 63/68 (2006.01) C07C 51/00 (2006.01) C07C 51/06 (2006.01) C07C 51/41 (2006.01) C07C 65/03 (2006.01) C07C 65/21 (2006.01) C07C 227/18 (2006.01) C07C 229/54 (2006.01)
Patent
CA 2175527
The present invention relates to a process for the preparation of salts of substituted or unsubstituted phthalic acids, by reacting a compound of the formula Image (1) in which R1, R2, R3 and R4 are identical or different and are H, F, Cl, Br, CF3, OH, an alkoxy or alkyl radical in each case having 1 to 4 carbon atoms, or a radical -NR7R8, in which R7 and R8 are identical or different and are H, an alkyl radical having 1 to 4 carbon atoms, or a phenyl radical, R5 and R6 are identical or different and are H, a -CO- alkyl group having 1 to 6 carbon atoms in the alkyl radical, or a benzoyl group, or R5 and R6 together form a radical of the formula Image (2) in which R9, R10, R11 and R12 are identical or different and are H, F, Cl, Br, CF3, OH, an alkoxy or alkyl radical in each case having 1 to 4 carbon atoms, or a radical -NR7R8, in which R7 and R8 are identical or different and are H, an alkyl radical having 1 to 4 carbon atoms, or a phenyl radical, with water, a water-soluble base and an oxidizing agent at a temperature of -10 to 150°C in the presence or absence of a water-insoluble solvent inert under the reaction conditions.
Papenfuhs Theodor
Pfirmann Ralf
Fetherstonhaugh & Co.
Hoechst Aktiengesellschaft
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