Magenta dye-releasing compounds

Claim 1

Process for the production of diffusion transfer images comprising the steps of: (1) applying an alkaline aqueous processing liquid to an image-wise exposed photographic element comprising at least one photosensitive alkali-permeable hydrophilic colloid silver halide emulsion layer and in operative association therewith at least one non-diffusible dye-releasing compound that can split off a diffusible magenta azomethine dye, (2) providing a silver halide developing agent, which is present in said photographic element at least during application of said alkaline aqueous processing liquid to effect - as a function of the development of said silver halide emulsion layer and a redox reaction - the image-wise release of said diffusible magenta azomethine dye, and (3) allowing diffusion of said released magenta azomethine dye into an image-receiving layer held in water-permeable relationship with said silver halide emulsion layer, characterized in that said dye-releasing compound corresponds to the following general formula I: wherein: CAR represents an organic carrier moiety capable of undergoing a redox reaction, which moiety may contain a ballasting group rendering said dye-releasing compound non-diffusing in a hydrophilic colloid medium in wet alkaline conditions, L¹ represents a chemical group cleavable or releasable from the carrier moiety as a function of a redox reaction taking place in the development of said silver halide emulsion layer under wet alkaline conditions, G represents a bivalent organic linking group comprising at least one aromatic nucleus or a substituted bivalent organic linking group comprising at least one aromatic nucleus, R¹ is hydrogen, an alkyl group, or an aryl group, R² is hydrogen or a monovalent organic group, L² represents a bivalent organic linking group comprising at least 2 carbon atoms, Z and Y together represent the atoms necessary to complete a substituted or unsubstituted anellated heterocyclic system selected from the group of the pyrazolo-azoles and imidazo-azoles R³ is hydrogen, a halogen atom, an alkyl group, an alkoxy group, an acylamino group, or an aryl group, as well as a substituent in ortho-position to the group NR⁴R⁵, which substituent together with R⁴ completes a cyclic amino group, and R⁴ is hydrogen, a C¹-C⁴ alkyl group, a substituted C¹-C⁴ alkyl group, a substituent that together with R³ completes a cyclic amino group, or a substituent that together with R⁵ completes a cyclic amino group, R⁵ is hydrogen, a C¹-C⁴ alkyl group, a substituted C¹-C⁴ alkyl group, or a substituent that together with R⁴ completes a cyclic amino group, and R⁶ is hydrogen, a C¹-C⁴ alkyl group, a substituted C¹-C⁴ alkyl group, an aryl group, or a substituted aryl group.