Patent GB-797141-A (GB)
Title: Improvements in colour photographic development processes
IPC: G03C7/34
Filed: 1955-11-02
Abstract: 2-Acetamido-5-aminophenol is prepared by reducing with hydrogen in presence of Raney nickel 2-acetamido-5-nitrophenol, itself prepared by reacting 2-amino-5-nitrophenol with acetyl chloride in presence of glacial acetic acid and sodium acetate.  2 - Benzamido - 5 - aminophenol and 2-benzamido-5-nitrophenol are similarly prepared.  2 - Acetamido - 5 - (2:4 - di - tert. - amylphenoxyacetamido)-phenol is prepared by reacting 2 - acetamido - 5 - aminophenol with 2:4 - di - tert.-amylphenoxyacetyl chloride, prepared by reacting 2:4-di-tert.-amylphenoxyacetic acid (from 2:4 - di - tert. - amylphenol and chloracetic acid in presence of NaOH) with thionyl chloride.  5 - Benzamido - 2 - [g  - (2:4 - di - tert. - amylphenoxy)-butyramido]-phenol is prepared by reacting with benzoyl chloride in dioxane containing quinoline 5 - amino - 2 - [g  - (2:4 - di - tert. - amylphenoxy) - butyramido] - phenol, itself prepared by reducing 5-nitro-2-[g -(2:4-di-tert.-amylphenoxy) - butyramido] - phenol. 5-Benzamido - 2 - [a  - (2:4 - di - tert. - amylphenoxy) - butyramido]-phenol and the corresponding 5-amino compound, also 2-benzamido-5-[g -(2:4-di - tert. - amylphenoxy) - butyramido] - phenol (from 2-benzamido-5-aminophenol) are similarly prepared.  5 - Nitro - 2 - [g  - (2:4 - di - tert. - amylphenoxy) - butyramido] - phenol is prepared by reacting 2 - amino - 5 - nitrophenol with g  - (2:4 - di - tert. - amylphenoxy) - butyryl chloride.  5 - Nitro - 2 - [a  - (2:4 - di - tert. - amylphenoxy) - butyramido] - phenol is similarly prepared.  g  - (2:4 - Di - tert. - amylphenoxy) - butyryl chloride is prepared by reacting with thionyl chloride the corresponding acid, itself prepared by reacting together 2:4-di-tert.-amylphenol and butyrolactone in presence of sodium methoxide.  2:5 - Di - (2:4 - di - tert. - amylphenoxyacetamido) - phenol is prepared by reacting 2:4-di - tert. - amylphenoxyacetyl chloride with 5 - amino - 2 - (2:4 - di - tert. - amylphenoxyacetamido)-phenol, prepared by reducing 5-nitro-2-(2:4-di-tert.-amylphenoxyacetamido)-phenol, itself prepared by reacting 2:4-di-tert.-amylphenoxyacetyl chloride with 2-amino-5-nitrophenol.  5 - [3 - (Chlorosulphonyl) - benzamido] - 2 - stearamidophenol is prepared by reacting 3-chlorosulphonylbenzoyl chloride with 5-amino-2-stearamidophenol.  Other dye intermediates prepared similarly are 2:5-diacetamidophenol, 2-caproylamido-5-[g  - (2:4 - di - tert. - amylphenoxy) - butyramido]-phenol, 2:5-dilauramidophenol, 2-lauramido-5-furoylamidophenol, 2:5 - dipalmitoylamidophenol, 2 - [g  - (2:4 - di - tert. - amylphenoxy) - butyramido] - 5 - caproylamidophenol, 2 - [g  - (2:4 - di - tert. - amylphenoxy) - butyramido] - 5 - [d  - (3:5 - dicarbomethoxyphenylcarbamyl)-valeramido] - phenol, 2 - [g  - (2:4 - di - tert. - amylphenoxy) - butyramido] - 5 - p - tert. - amylbenzamidophenol, 2:5 - di - a  - (2:4 - di - tert. - amylphenoxy) - butyramidophenol, 2 - p - tert. - amylbenzamido - 5 - [g  - (2:4 - di - tert. - amylphenoxy)-butyramido] - phenol, 2 - caproylamido - 5 - [a  - (2:4 - di - tert. - amylphenoxy) - butyramido] - phenol, and 2:5 - bis - (a  - chloro - 2:4 - di - tert.-amylphenoxyacetamido) - 4:6 - dichlorophenol.  Specifications 541,589, [Group XX], 562,205, [Group IV], and 791,219 are referred to.ALSO:2 : 5 - Di - (2 : 4 - di - tert. - amylphenoxyacetamido) - 4 - (2 - carbethoxybenzeneazo) - phenol is prepared by reacting 2 : 5-di-(2 : 4-di-tert.-amylphenoxyacetamido)-phenol with o-carbethoxybenzenediazonium chloride in pyridine. Specifications 541,589, [Group XX], 562,205, [Group IV], and 791,219 are referred to.