Abstract: Novel xanthene dye developer compounds which include three or four silver halide developing groups are disclosed. Also described are photographic products and processes utilizing the dye developers.

Abstract: Novel xanthene dye developer compounds which include three or four silver halide developing groups are disclosed. Also described are photographic products and processes utilizing the dye developers.

Abstract: In one embodiment, this application is directed to an improved method of synthesizing certain bis-pyrazolone oxonol compounds useful as antihalation dyes in photography which method comprises synthesizing a pyrazolone ethyl ester by reacting a p-N-alkylsulfonamidophenylhydrazine or its hydrochloride and sodium diethyl oxalacetate, hydrolyzing the pyrazolone ethyl ester thus formed to give the corresponding pyrazolonecarboxylic acid, esterifying the pyrazolonecarboxylic acid with a glycol to give the corresponding pyrazolone hydroxyalkyl ester and condensing said pyrazolone hydroxyalkyl ester with an aldehyde dianil hydrochloride to yield the dye product.

Abstract: A novel process which comprises the step of reacting a metal complexed dye of the formula: ##STR1## WITH A CYCLIZED COMPOUND OF THE FORMULA: ##STR2## to form a metal complexed dye developer which is represented by the formula ##STR3## where A is a phenyl radical or a substituted phenyl radical; B is a phenyl or nitrogen containing heterocyclic radical or substituted derivatives of these radicals; R is N or CH, Y is a silver halide developing substituent; each n is 0 or 1; X is oxygen or an oxygen containing substituent; Me is a metal complexing atom; L represents a molecule(s) that can satisfy the coordination sphere of the Me atom and each R.sup.2 can be hydrogen or any substituent which will not interfere with the functionality of the complexed cyclized compound as a silver halide developing agent. The process generally comprises mixing the reactants in a suitable solubilizing medium and heating the solution. The reaction product can be precipitated by the addition of acid to the reaction medium.

Abstract: An improved method for preparing a compound of the formula: ##SPC1##Where each R can be hydrogen, an alkyl substituent, preferably having from 1-6 carbon atoms or an alkoxy substituent preferably having from 1-6 carbon atoms and each R.sup.1 is hydrogen or an alkyl or an alkanol group. R.sup.2 is an alkylene radical having from 1-6 carbon atoms and X represents the atoms to complete a cyclopentyl or cyclohexyl ring.Metal complexed dyes of the above formula are especially useful in the preparation of photographic image patterns.The improved feature of the method presented involves the preparation of compounds of formula 1 in the presence of weakly basic anion exchange resins to obtain high yields of especially high purity products.