Process for the purification of an intermediate in the preparation of iopamidol
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Process for the purification of an intermediate in the preparation of iopamidol
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Process for the preparation of a dicarboxylic acid dichloride
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Process for the preparation of a dicarboxylic acid dichloride
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Process for the preparation of a dicarboxylic acid dichloride.
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Process for the preparation of a halosubstituted aromatic acid
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Prepn. of crystalline, anhydrous Iopamidol - by crystallisation from deionised water, useful as X=ray contrast agent
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Prepn. of crystalline, anhydrous Iopamidol - by crystallisation from deionised water, useful as X=ray contrast agent
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S-(-)-5-[[2-(Acetyl-oxy)-1-oxo-propyl] amino]-2,4,6-tri:iodo-1,3-benzene di:carboxylic acid di:chloride prepn. - comprises reacting S-(-)-[2-(acetyl-oxy)]propionic acid chloride and 5-amino-2,4,6-tri:iodo-1,3-benzene di:carboxylic acid di:chloride in presence of halo-hydric acid
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Prepn. of 5-amino- 2,4,6-tri:iodo- 1,3-benzene di:carboxylic acid di:chloride - by reacting 5-amino- 2,4,6-tri:iodo- 1,3-benzene di:carboxylic acid and thionyl chloride in heterogeneous phase in solvent in presence of catalytic amt. of tert. amine
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Prepn. of 5-amino- 2,4,6-tri:iodo-1,3-benzene di:carboxylic acid - by catalytic hydrogenation of 5-nitro-1,3-benzene di:carboxylic acid and iodination of the product
