Single pot process for mixing fluoroanthranilic acid

Details Single pot process for mixing fluoroanthranilic acid Single pot process for mixing fluoroanthranilic acid

C - Chemistry, Metallurgy

07

C

260/513, 260/321

C07C 229/60 (2006.01) C07C 63/68 (2006.01) C07C 227/12 (2006.01) C07C 229/56 (2006.01) C07D 209/48 (2006.01)

Patent

CA 2021727

Case 6009 RDF/dka ABSTRACT 08/ 16/89 SINGLE POT PROCESS OF MAKING A FLUOROANTHRANILIC ACID Disclosed is a method of making ionized fluoroanthranilic acid from a fluorophthalic compound in a single pot process without isolating any intermediate product. A composition is prepared which which comprises an aqueous solution of water, a fluorophthalic compound selected from the group consisting of Image , Image , or Image and mixtures thereof, where "n" is 1 to 4, at a concentration of about 5 to about 30 percent by weight based on the water weight, and about 1 to about 1.5 equivalents of hydroxylamine or a mineral acid salt thereof. The pH of the composition is maintained at at least about 11 and the temperature of the composition is maintained at at least about 90°C. The unionized form of the acid is made by cooling below 50°C and lowering the pH to between about 4 and about 5. Also disclosed are the intermediate compounds, fluoro-N-hydroxyphthalimides, and a method of making them.

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