Certain 3-acetamido or 3-benzamido-6-hydroxy-2-1-h-pyridones
Abstract
Abstract 4 - SUBSTITUTED - 2,6 - DIHYDROXYPYRIDINES AND THE CORRESPONDING N-SUBSTITUTED-2-HYDROXYPYRID-6-ONES CONTAINING A 3-AMINO GROUP ARE ACYLATED WITH THE HALIDES OR ANHYDRIDES OF ORGANIC CARBOXYLIC OR SULPHONIC ACIDES TO GIVE A RANGE OF VALUABLE COUPLING COMPONENTS, ACYLATION IS PREFERABLY CARRIED OUT UNDER AN INERT ATMOSPHERE OR ON THE AMINO COMPOUND AS IT IS FORMED BY REDUCTION OF A 3-NITROSO, -NITRO OR -ARYLAZO DERIVATIVE. THE PRODUCTS OBTAINED BY COUPLING WITH AROMATIC DIAZONIUM COMPOUNDS ARE AZO DYESTUFFS, E.G. DISPERSE DYES FOR CELLULOSE ACETATE AND POLYESTER FIBRE, CELLULOSE-REACTIVE OR DIRECT DYES FOR COTTON AND VISCOSE, METAL-COMPLEX AND ACID DYES FOR WOOL, AND CATIONIC DYES FOR POLYACRYLONITRILE MATERIALS.
Inventors
- 👤 P Austin
- 👤 A Crabtree
Bibliographic Details
Claims Analysis
Total Claims: 0References Cited (Backward Citations)
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