Release of photographic reagents with 3-pyrazolidone developing agents

Claim 2

A photographic assemblage for producing a dye image wherein an imagewise pattern of diffusible dye and an imagewise pattern of photographic reagent are formed by means of an oxidized 3-pyrazolidone developing agent, the assemblage comprising (a) a support bearing at least one silver halide emulsion layer having associated therewith a dye image-providing material which is capable of providing an imagewise pattern of diffusible dye as a function of silver halide development; (b) a photographic reagent releasing compound comprising an acyclic or cyclic compound in which the photographic reagent is linked, through a hetero atom, to a carbon atom which is adjacent to or in conjugation with a carbonyl group or an imino group; (c) a dye image receiving layer; (d) an alkaline processing composition and means for discharging same within the assemblage; and (e) a 3-pyrazolidone developing agent which in its oxidized form is capable of oxidizing, under alkaline conditions, the photographic reagent releasing compound to cleave the hetero atom from the carbon atom to which it is linked and thereby release the photographic reagent; the assemblage being free of color developing agent.

Claim 3

An assemblage of claim 1 wherein the 3-pyrazolidone developing agent is contained within the alkaline processing composition.

Claim 4

An assemblage of claim 1 wherein the photographic reagent releasing compound has one of the following structures: ##STR50## wherein: Q is ═O or ═NR 4 where R 4 is hydroxy or amino; Y is --S--, --O-- or ##STR51## where R 5 is hydrogen, alkyl, aryl or a covalent bond in a heterocyclic ring formed by Y and Z; Z represents the atoms which, together with Y, form a photographic reagent; m is 0 or 1; n is 0 or 1; one of a and b is ##STR52## and the other is ##STR53## or --N═; Nu--X--E is a timing group which, upon displacement from the carbon atom to which it is attached, undergoes an intramolecular nucleophilic displacement reaction to release Y--Z, where Nu is a nucleophilic group, E is an electrophilic group and X is a linking group for spatially relating Nu and E, upon displacement from the carbon atom, to undergo an intramolecular nucleophilic displacement reaction; R 1 is hydrogen, halogen, alkyl, aryl, heterocyclyl, --(Nu--X--E) n -- Y--Z or O--R 6 where R 6 is alkyl, aryl, heterocyclyl, ##STR54## where R 7 is alkyl, aryl or heterocyclyl; R 2 is alkyl, aryl, heterocyclyl, cyano, --N(R 8 ) 2 , --SO 2 R 8 , --SO 2 OR 8 , --SO 2 N(R 8 ) 2 , --N + (R 8 ) 3 or OR 8 where R 8 is hydrogen, alkyl, aryl or heterocyclyl, or two R 8 groups combined with a nitrogen atom to which they are attached form a heterocyclic nitrogen ring; and R 3 represents the atoms to complete a saturated or unsaturated, carbocyclic or heterocyclic ring or ring system containing at least one 5- or 7-membered ring.

Claim 5

An assemblage of claim 1 wherein the photographic reagent releasing compound has one of the following structures: ##STR55## wherein: Y is ##STR56## where R 5 is hydrogen, alkyl, aryl or a covalent bond in a heterocyclic ring formed by Y and Z; Z represents the atoms which, together with Y, form a photographic reagent; n is 0 or 1; Nu--X--E is a timing group, which upon displacement from the carbon atom to which it is attached, undergoes an intramolecular nucleophilic displacement reaction to release Y--Z, where Nu is a nucleophilic group, E is an electrophilic group and X is a linking group for spatially relating Nu and E, upon displacement from the carbon atom, to undergo an intramolecular nucleophilic displacement reaction; R 1 is hydrogen, halogen, alkyl, aryl, heterocyclyl, --(Nu--X--E) n -- Y--Z or OR 6 where R 6 is alkyl, aryl, heterocyclyl, ##STR57## where R 7 is alkyl, aryl or heterocyclyl; R 9 is alkyl, aryl or heterocyclyl and R 10 is R 9 , (R 11 ) 2 NSO 2 --, R 11 SO 2 NR 11 --, (R 11 ) 2 NCO--, or R 11 CONR 11 -- where R 11 is hydrogen, alkyl, aryl or heterocyclyl.

Claim 6

An assemblage of claim 3 wherein the group Y--Z forms a development inhibitor.

Claim 7

An assemblage of claim 4 wherein: n is 0; Y--Z is a development inhibitor; R 1 is hydrogen; R 9 is aryl; and R 10 is (R 11 ) 2 NSO 2 --, R 11 SO 2 NR 11 --, (R 11 ) 2 NCO--, or R 11 CONR 11 --.

Claim 8

An assemblage of any one of claims 3, 4, 5 or 6 wherein the 3-pyrazolidone developing agent is selected from the group consisting of 4-hydroxymethyl-4-methyl-1-phenyl-3-pyrazolidone, 4-hydroxymethyl-4-methyl-1-(3,4-diphenyl-3-pyrazolidone, 4-hydroxymethyl-4-methyl-1-(3,4-dimethylphenyl)-3-pyrazolidone, and 4-hydroxymethyl-4-methyl-1-p-tolyl-3-pyrazolidone.

Claim 9

An assemblage of claim 1 wherein the silver halide emulsion is a direct positive emulsion and the dye image providing material releases a diffusible dye as a direct function of silver halide development.

Claim 10

An assemblage of claim 8 wherein the dye-image providing material is a sulfonamido dye releaser.

Claim 11

An assemblage of claim 1 wherein the silver halide emulsion is a negative-working emulsion and the dye image providing material releases a mobile dye as an inverse function of silver halide development.

Claim 12

An assemblage of claim 10 wherein the dye image providing material is a quinone dye releaser or nitro dye releaser and the film unit further contains an electron donor associated with the dye releaser.

Claim 13

A process of releasing a photographic reagent from a photographic reagent releasing compound comprising an acyclic or cyclic compound in which the photographic reagent is linked, through a hetero atom, to a carbon atom which is adjacent to or in conjugation with a carbonyl group or an imino group, the process comprising the step of causing the photographic reagent releasing compound to react, under alkaline conditions, with oxidized 3-pyrazolidone developing agent to cleave the hetero atom from the carbon atom to which it is linked and thereby release the photographic reagent.

Claim 14

A process of releasing a photographic reagent from a photographic reagent releasing compound comprising an acyclic or cyclic compound in which the photographic reagent is linked, through a hetero atom, to a carbon atom which is adjacent to or in conjugation with a carbonyl group or an imino group, the process comprising the step of causing the photographic reagent releasing compound to react, under alkaline conditions, with oxidized 3-pyrazolidone developing agent to cleave the hetero atom from the carbon atom to which it is linked and thereby release the photographic reagent.

Claim 15

A process of claim 12 wherein the photographic reagent releasing compound has one of the following structures: ##STR58## wherein: Q is ═O or ═NR 4 where R 4 is hydroxy or amino; Y is ##STR59## where R 5 is hydrogen, alkyl, aryl or a covalent bond in a heterocyclic ring formed by Y and Z; Z represents the atoms which, together with Y, form a photographic reagent; m is 0 or 1; n is 0 or 1; one of a and b is ##STR60## and the other is ##STR61## or --N═; Nu--X--E is a timing group which, upon displacement from the carbon atom to which it is attached, undergoes an intramolecular nucleophilic displacement reaction to release Y--Z, where Nu is a nucleophilic group, E is an electrophilic group and X is a linking group for spatially relating Nu and E, upon displacement from the carbon atom, to undergo an intramolecular nucleophilic displacement reaction; R 1 is hydrogen, halogen, alkyl, aryl, heterocyclyl, --(Nu--X--E) n -- Y--Z or O--R 6 where R 6 is alkyl, aryl, heterocyclyl, ##STR62## where R 7 is alkyl, aryl or heterocyclyl; R 2 is alkyl, aryl, heterocyclyl, cyano, --N(R 8 ) 2 , --SO 2 R 8 , --SO 2 OR 8 , --SO 2 N(R 8 ) 2 , --N + (R 8 ) 3 or OR 8 where R 8 is hydrogen, alkyl, aryl or heterocyclyl, or two R 8 groups combined with a nitrogen atom to which they are attached form a heterocyclic nitrogen ring; and R 3 represents the atoms to complete a saturated or unsaturated, carbocyclic or heterocyclic ring or ring system containing at least one 5- to 7-membered ring.

Claim 16

A process of claim 12 wherein the photographic reagent releasing compound has one of the following structures: ##STR63## wherein: Y is ##STR64## where R 5 is hydrogen, alkyl, aryl or a covalent bond in a heterocyclic ring formed by Y and Z; Z represents the atoms which, together with Y, form a photographic reagent; n is 0 or 1; Nu--X--E is a timing group which, upon displacement from the carbon atom to which it is attached, undergoes an intramolecular nucleophilic displacement reaction to release Y--Z, where Nu is a nucleophilic group, E is an electrophilic group and X is a linking group for spatially relating Nu and E, upon displacement from the carbon atom, to undergo an intramolecular nucleophilic displacement reaction; R 1 is hydrogen, halogen, alkyl, aryl, heterocyclyl, --(Nu--X--E) n -- Y--Z or O--R 6 where R 6 is alkyl, aryl, heterocyclyl, ##STR65## where R 7 is alkyl, aryl or heterocyclyl; R 9 is alkyl, aryl or heterocyclyl and R 10 is R 9 , (R 11 ) 2 NSO 2 --, R 11 SO 2 NR 11 --, (R 11 ) 2 NCO--, or R 11 CONR 11 -- where R 11 is hydrogen, alkyl, aryl or heterocyclyl.

Claim 17

A process of claim 13 wherein the group Y--Z forms a development inhibitor.

Claim 18

A process of claim 14 wherein: n is 0; Y--Z is a development inhibitor; R 1 is hydrogen; R 9 is aryl; and R 10 is (R 11 ) 2 NSO 2 --, R 11 SO 2 NR 11 --, (R 11 ) 2 NCO--.

Claim 19

A process of any one of claims 12, 13, 14, 15 or 16 wherein oxidized 3-pyrazolidone developing agent is generated by silver halide development.

Claim 20

A process of claim 17 wherein the 3-pyrazolidone developing agent is selected from the group consisting of 4-hydroxymethyl-4-methyl-1-phenyl-3-pyrazolidone, 4-hydroxymethyl-4-methyl-1-(3,4-dimethylphenyl)-3-pyrazolidone, and 4-hydroxymethyl-4-methyl-1-p-tolyl-3-pyrazolidone.

Claim 21

A process of claim 17 further comprising, concurrent with the release of photographic reagent, forming an imagewise pattern of diffusible dye as a function of silver halide development.

Claim 22

A process of claim 19 wherein the imagewise pattern of diffusible dye is formed as a direct function of silver halide development.

Claim 23

A process of claim 19 wherein the imagewise pattern of diffusible dye is formed in an inverse function of silver halide development.