Patent GB-662419-A (GB)
Title: Production of yellow dye photographic images by color development
IPC: G03C7/32
Filed: 1949-12-12
Abstract: 2 - (p - Benzoylacetamidophenyl) - 1 - octadecyl - 5 - benziminazolesulphonic acid is prepared by heating together a mixture of 2-(41-aminophenyl) - 1 - octadecylbenziminazole - 5 - sulphonic acid, benzoylacetic ester, and pyridine.  2 - (m - Benzoylacetamidophenyl) - 1 - octadecyl - 5-benziminazolesulphonic acid is similarly prepared.  2 - (41 - Aminophenyl) - 1 - octadecylbenziminazole-5-sulphonic acid is prepared by heating 3 - amino - 4 - octadecylaminobenzenesulphonic acid with p-nitrobenzenecarboxylic acid chloride in presence of pyridine, and reducing the product.  2 - (31 - Aminophenyl) - 1 - octadecylbenziminazole - 5 - sulphonic acid is similarly prepared. Terephthaloyl - bis - (3 - chloro - 4 : 6 - dimethoxyacetanilide) is prepared by refluxing together 3 - chloro - 4 : 6 - dimethoxyaniline and ethyl terephthaloyl - bis - acetate in xylene.  Terephthaloyl - bis - (4 - chloro - 5 - methyl - o - acetanisidide) is similarly prepared.  3-Chloro-4 : 6-dimethoxyaniline is prepared by chlorinating dimethoxyresorcinol, nitrating, and reducing. p  4 : 41-Methylene-bis-benzoylacetanilide is prepared by refluxing 4 : 41-methylene-bis-aniline with ethyl benzoylacetate in xylene. 41-2-Pyridylsulphamylbenzoylacetanilide, 5 : 51 - ureylene - bis - N - benzoylacetyl - anthranilic acid-3 : 31 - ureylene - bis - 6 - p - benzoylacetamidobenzamidobenzenesulphonic acid, 8-benzoylacetamido-1-naphthoxyacetic acid, and 2-p-benzoylacetamidobenzamido - 6 - stearylamino - p - toluenesulphonic acid are similarly prepared.  3 : 31 - Dicarboxydiphenylurea is prepared by condensing 3-aminobenzoic acid with phosgene.  Diphenylurea - 3 : 31 - disulphonic acid is similarly prepared.  3 : 31 - Dicarboxy - 4 : 41 - diaminodiphenylurea is prepared by nitrating and reducing 3 : 31-dicarboxydiphenylurea.  3 : 31-Disulpho-4- 41-diaminodiphenylurea is similarly prepared.  3 : 31 - Disulpho - 4 : 41 - di - p - nitrobenzamidodiphenylurea is prepared by condensing 3 : 31 - disulpho - 4 : 41 - diaminodiphenylurea with p-nitrobenzoyl chloride.  3 : 31 - Disulpho - 4 : 41 - di - p - aminobenzamidodiphenylurea is prepared by reducing the corresponding nitro compound.  7-Aminonaphthoxyacetic acid is prepared by the reaction of 7-acetamido-1-naphthol with chloracetic acid in presence of sodium hydroxide, followed by alkaline hydrolysis.  3 - Stearoylamino - 5 - p - nitrobenzamidotoluenesulphonic acid is prepared by condensing 3 - stearoylamino - 5 - aminotoluenesulphonic acid with p-nitrobenzoyl chlorine, and 3-stearoylamino - 5 - p - aminobenzamidotoluenesulphonic acid by reducing the nitro compound. 4 : 41-Methylene-bis-acetoacetanilide is prepared by condensing 4 : 41-methylene-bis-aniline with diketone in benzene.  N : N1-1-Methylethylenebis-acetoacetamide is similarly prepared.  a -Phenylsulphonylacetophenone is prepared by condensing a -chloracetophenone with sodium benzenesulphinate.  p - Cyanoacetyl - b  - octadecenylsuccinalic acid is prepared by condensing octadecenyl succinic anhydride with p-aminobenzoylacetonitrile. p-Aminobenzoylacetonitrile is prepared by hydrolysing with alkali p-cyanacetamino-a -cyanacetophenone (itself prepared by condensing p - chloracetamino - a  - chloracetophenone with sodium cyanide).  p - Chloracetamino - a  - chloracetophenone is prepared by condensing a -chloracetanilide with chloracetyl chloride in presence of aluminium chloride.