Process for producing 4-alkoxyanilines

Details Process for producing 4-alkoxyanilines Process for producing 4-alkoxyanilines

C - Chemistry, Metallurgy

07

C

260/601.2

C07C 209/36 (2006.01) B01J 23/38 (2006.01) C07C 211/46 (2006.01) C07C 217/84 (2006.01)

Patent

CA 1215724

Title of the Invention PROCESS FOR PRODUCING 4-ALKOXYANILINES Abstract of the Disclosure 4-Alkoxyanilines are obtained industrially advantageously by catalytically hydrogenating a nitroben- zene in the presence of a noble metal catalyst in a mixed solvent containing a lower aliphatic alcohol, sulfuric acid, and water or a lower aliphatic carboxylic acid or both to induce hydrogenation and a Bamberger- type rearrangement reaction. The mixed solvent contains at least 10 moles, preferably 30 to 60 moles, of the lower aliphatic alcohol per mole of the nitrobenzene, 1 to 10 moles, preferably 2 to 7 moles, of sulfuric acid per mole of the nitrobenzene, and 2 to 30 % by weight, preferably 3 to 10 % by weight, of water, the lower aliphatic carboxylic acid or both.

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