Process for the preparation of a halosubstituted aromatic acid

Details Process for the preparation of a halosubstituted aromatic acid Process for the preparation of a halosubstituted aromatic acid

C - Chemistry, Metallurgy

07

C

C07C 227/16 (2006.01) C07C 227/04 (2006.01) C07C 229/66 (2006.01)

Patent

CA 2195635

The present invention refers to a process for the preparation of 5-amino-2,4,6- triiodo-1,3-benzenedicarboxylic acid, comprising the following steps: a) catalytic hydrogenation of 5-nitro-1,3-benzenedicarboxylic acid in neutral or basic environment, which gives an aqueous solution of 5-amino-1,3-benzenedicarboxylic acid sodium salt; b) direct iodination of the 5-amino-1,3-benzenedicarboxylic acid sodium salt solution deriving from step a), without further purification, with a solution of ICI in HCl, being the 5-amino-1,3-benzenedicarboxylic acid sodium salt solution previously added with HCl and H2SO4.

La présente invention se rapporte à un procédé de préparation de l'acide 5-amino-2,4,6,triiodo-1,3-benzènedicarboxylique comprenant les étapes suivantes: a) l'hydrogénation catalytique de l'acide 5-nitro-1,3-benzène dicarboxylique dans un environnement neutre ou basique qui permet d'obtenir une solution aqueuse de sel de sodium de l'acide 5-amino-1,3-benzènedicarboxylique; b) l'iodation directe de la solution de sel de sodium de l'acide 5-amino-1,3-benzènedicarboxylique obtenue à l'étape a), sans purification supplémentaire, avec une solution de ICl dans HCl, la solution de sel de sodium de l'acide 5-amino-1,3-benzène dicarboxylique ayant été auparavant ajoutée avec HCl et H2SO4.

Affiliated with

Also associated with

Rating

Process for the preparation of a halosubstituted aromatic acid does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process for the preparation of a halosubstituted aromatic acid, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for the preparation of a halosubstituted aromatic acid will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1904764