Patent GB-1066352-A (GB)
Title: Photographic colour reproduction processes and materials
IPC: C07D231/26
Filed: 1964-04-01
Abstract: The sodium salt of 2-{4-[3-(4-t-amyl-x-sulphophenoxy) benzamido]phenethyl} - x - (1 - phenyl - 5-tetrazolylthio)hydroquinone is made by hydrolysing 2 - {4 - [3 - (4 - t - amyl - x - chlorosulphonylphenoxy)benzamido]phenethyl - x - (1 - phenyl-5-tetrazolylthio) hydroquinone prepared by reacting 3 - (4 - t - amyl - x - chlorosulphonylphenoxy)-benzoyl chloride with 2-(4-aminophenethyl) - x - (1 - phenyl - 5 - tetrazolylthio) hydroquinone which is produced by alkaline hydrolysis of x - (1 - phenyl - 5 - tetrazolylthio)- 2 - (4 - trifluoro - acetamidophenethyl) - hydroquinone obtained by reacting 1-phenyl-5-mercaptotetrazole with 4 - trifluoracetamidophenethylbenzoquinone made by oxidizing 4-trifluoracetamidophenethylhydroquinone formed by reacting 4-amino-phenethylhydroquinone with trifluoroacetic anhydride.  1 - Hydroxy - 4 - stearoyloxymercuri - 2 -naphthoic acid is made by heating 1-hydroxy-2-naphthoic acid with mercuric stearate in solution.  1 - [4 - (3:5 - Dicarboxybenzamido)phenyl]-3 - ethoxy - 4 - (3 - octadecylcarbamylphenylthio)-5-pyrazolone is made by alkaline hydrolysis of the corresponding 3:5-dicarboethoxybenzamido derivative prepared by reacting 3-octadecylcarbamoylphenylsulphenyl chloride with 1-[4-(3:5 - dicarbethoxybenzamido)phenyl] - 3 - ethoxy-5-pyrazolone obtained by heating 1-(4-amino-phenyl) - 3 - ethoxy - 5 - pyrazolone with 3:5-dicarbethoxybenzoyl chloride made from the corresponding acid prepared by partial hydrolysis of triethyltrimesate.  3 - Octadecylcarbamylphenylsulphenyl chloride is made by bubbling chlorine through 3:31-diotadecylcarbamyldiphenyldisulphide in CCl4.  1 - (4 - Aminophenyl) - 3 - ethoxy - 5 - pyrazolone is made by reducing the corresponding 4-nitrophenyl compound prepared by reacting 4-nitrophenylhydrazine with ethyl-b :b -diethoxy-acrylate in the presence of sodium ethoxide/ ethanol.  1 - (4 - Sulphophenyl) - 3 - (4 - sulphoanilino) - 4 - (3 - octadecylcarbamylphenylthio) - 5 - pyrazolone disodium salt is made by alkaline hydrolysis of 1 - (4 - fluosulphonylphenyl) - 3 - (4 -fluosulphonylanilino) - 4 - (3 - octadecylcarbamylphenylthio) - 5 - pyrazolone prepared by reacting 3-octadecylcarbamylphenylsulphenyl chloride with 1 - (4 - fluosulphonylphenyl) - 3 - (4 - fluosulphonylanilino - 5 - pyrazolone obtained by treating 1 - phenyl - 3 - anilino - 5 - pyrazolone with fluosulphonic acid.  Other compounds specified are 5-[4-(3,5 -disulphobenzamido)phenethyl] - 2 - methyl - 3 -(1 - phenyl - 5 - tetrazolythio) hydroquinone disodium salt, 2 - {4 - [2 - (2,4 - di -tert. - amylphenoxy) - 5 - (3,5 - disulphobenzamido) - benzamido]phenethyl} - x - (1 - phenyl - 5 - tetrazolylthio) hydroquinone disodium salt dihydrate, 2 - {4 - [3 - (4 - tert. - amyl - x - sulphophenoxy)-benzamido] phenethyl} - x - (1 - phenyl - 5 - tetrazolythio) hydroquinone diacetate sodium salt dihydrate, 2-[4-(3,5-disulpho-benzamido)-phenethyl] - x - (1 - phenyl - 5 - tetrazolylthio)-hydroquinone disodium salt dihydrate, and 2 - [4 - (3,5 - disulphobenzamido)phenethyl]-x - (2 - benzoxazolylthio) - hydroquinone disodium salt dihydrate.