摘要:
2-aryl-4-isoxazolin-3-1-derivatives of formula (I), useful as intermediates for positive working compounds in silver halide photographic materials ##STR1## wherein R.sup.1 represents a substituted or unsubstituted alkyl having from 1 to 6 carbon atoms or a substituted or unsubstituted aryl having from 6 to 24 carbon atoms; and R.sup.2, R.sup.3, and R.sup.4, are the same or different, each having up to 20 carbon atoms and each represents hydrogen, a substituted or unsubstituted alkoxy, a substituted or unsubstituted aryloxy, a substituted or unsubstituted acyl, a substituted or unsubstituted alkoxycarbonyl, a substituted or unsubstituted aryloxycarbonyl, halogen, nitro, a substituted or unsubstituted carbamoyl, a substituted or unsubstituted sulfamoyl, a substituted or unsubstituted sulfonyl, cyano, or trifluoromethyl, with the proviso that at least one of said R.sup.2 and R.sup.3 is cyano, a substituted or unsubstituted sulfonyl, trifluoromethyl, or nitro.
摘要:
A diffusion transfer-type silver halide color photographic photosensitive material comprising a support, having thereon at least a photosensitive thermally developable silver halide, a binder, a dye donating compound which is fast to diffusion and which forms or releases a diffusible dye, a development inhibitor releasing compound which releases a development inhibitor and a compound represented by formula (I)R.sup.1 --Y--O--H [I]wherein R.sup.1 represents an alkyl group, an aryl group, an alkylamino group, an arylamino group, an alkoxy group, an aryloxy group, a heterocyclic residual group or a polymer residual group of said groups, Y represents ##STR1## or --SO.sub.2 --NR.sup.2 -- and R.sup.2 represents a hydrogen atom, an alkyl group, an aryl group or an acyl group, and R.sup.1 and R.sup.2 may be joined together to form a five or eight membered ring is disclosed.
摘要:
The compounds in a preferred form are represented by general formula (I): ##STR1## wherein A and A' are each a group which can be hydrolyzed by hydrogen or alkali; X, Y and Z are each hydrogen, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a thioalkyl group or an electron-withdrawing group; PUG is a group released by a reaction with a light-exposed silver halide and/or the oxidized product of the developing agent, Time is a timing group; Time.sub.t PUG is a group released as .crclbar.TimePUG first when the oxidation-reduction moiety causes a cross reaction during the development and becomes an oxidized product, and is bonded to the benzene nucleus via a sulfur atom, a nitrogen atom or a selenium atom; and t is 0 or 1.
摘要:
A silver halide color photographic material comprising a support having thereon at least one silver halide emulsion layer, wherein the silver halide color photographic material contains an image forming compound represented by the following general formula (I):(Dye--X).sub.q --Y (I)wherein Dye represents a cyan dye group represented by the general formula (II) described below or a precursor thereof; X represents a chemical bond or a linking group; Y represents a group having a property of releasing Dye in correspondence or counter-correspondence to development of a light-sensitive silver salt having a latent image distributed imagewise and making a difference in diffusibility between the dye thus-released and the compound represented by (Dye--X).sub.q --Y; Dye and X are connected with each other by C or E in the general formula (II); and q represents an integer of 1 or 2, and when q is 2, the two groups (Dye--X) may be the same or different: ##STR1## wherein A represents a halogen atom, --OR.sup.1 or --SR.sup.1 (wherein R.sup.1 represents an alkyl group, an aryl group or a heterocyclic group); B represents an electron withdrawing group having a Hammett's op value of not less than 0.3; C represents a chemical bond, a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, a halogen atom, --OR.sup.4, --CONR.sup.4 R.sup.5, --SO.sub.2 NR.sup.4 R.sup.5, --N(R.sup.3)--COR.sub.4 or --N(R.sup.3)--SO.sub.2 R.sub.4 (wherein R.sup.3, R.sup.4 and R.sup.5 each represents a hydrogen atom or a group selected from those defined for R.sup.1, or R.sup.4 and R.sup.5 may combine with each other to form a 5-membered or 6-membered ring); E represents a chemical bond, a hydrogen atom, an alkyl group, a halogen atom, --OR.sup.4, --CONR.sup.4 R.sup.5, --SO.sub.2 NR.sup.4 R.sup.5, --N(R.sup.5)--COR.sup.4 or --N(R.sup.5)--SO.sub.2 R.sup.4 (wherein R.sup.4 and R.sup.5 have the same meaning as defined above); and G represents a hydroxy group or a salt thereof, or a group selected from those represented by the formula (T), (U) or (V): ##STR2## wherein R.sup.21 and R.sup.22, which may be the same or different, each represents an alkyl group, a cycloalkyl group, an alkenyl group, an aralkyl group, an aryl group, a heterocyclic group, an alkylthio group, an arylthio group, an alkoxy group, an aryloxy group or an amino group, or R.sup.21 and R.sup.22 may combine with each other to form a 5-membered or 6-membered ring.
摘要:
A radiation responsive composition containing a compound represented by the following formula (I) and a photoreducing agent capable of forming a redox couple together with said compound for many uses, e.g., image formation, etching, plating, etc.: ##STR1## wherein N represents a nitrogen atom; X represents an oxygen atom (--O--), a sulfur atom (--S--), or a nitrogen-containing group of formula, ##STR2## R.sup.1, R.sup.2, R.sup.3 and R.sup.4 each represents a mere bond, a substituted or unsubstituted alkyl, aryl, heterocyclic, acyl, aralkyl, alkenyl, alkynyl or carbamoyl group, or a sulfonyl group into which a substituted or unsubstituted alkyl or aryl group has been introduced, provided that at least one of the substituents R.sup.1 to R.sup.3 be a substituted or unsubstituted aryl or heterocyclic group and that two or more of R.sup.1, R.sup.2 and R.sup.3, or of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 when X represents a nitrogen containing group of formula, ##STR3## may be taken together to form a ring; UG represents a group to be released from said compound of formula (I) taking advantage of the N--X bond cleavage as a trigger, which takes place when a redox couple is formed between said compound of formula (I) and the photoreducing agent irradiated with radiant rays; and the solid lines represent bonds, while broken lines indicate that a bond may or may not be present, but at least one of the broken lines forms a bond.
摘要:
A silver halide color photographic material comprising (1) at least one coupler and (2) at least one compound represented by formula (I) ##STR1## wherein EAG represents a group capable of accepting an electron from a reducing substance; R.sup.1 and R.sup.2 each represents a chemical bond or a divalent substituent, or R.sup.1 and R.sup.2 are linked together to form a cyclic structure when linked with (Time).sub.t PUG; or R.sup.1 and R.sup.2 each represents a substituent, or R.sup.1 and R.sup.2 are linked together to form a cyclic structure when not linked with (Time).sub.t PUG; Time represents a group capable of releasing PUG, which is released by the cleavage of the single bond between the oxygen atom and the nitrogen atom in the compound; t represents 0 or 1; PUG represents a photographically useful group; and the dotted lines mean that at least one of them forms a chemical bond, and a method for forming an image using the material.
摘要:
The present invention provides silver halide photographic materials containing a havel compound, which when reduced, releases a photographically useful group as triggered off by the cleavage of the nitrogen-oxygen single bond in the compound and which is represented by the following general formula (I): ##STR1## wherein EAG represents a group which accepts an electron from a reducing substance; N and O each represents nitrogen atom and an oxygen atom, respectively; R.sup.1 and R.sup.2 each represents a substituent other than a hydrogen atom, and when R.sup.1 or R.sup.2 is bonded to --(Time).sub.t PUG, R.sup.1 or R.sup.2 is a mere bond or a substituent other than a hydrogen atom, and R.sup.1 and R.sup.2 may be bonded to each other to form a ring; Time represents a group for releasing PUG via the subsequent reaction as triggered off by the cleavage of the nitrogen-oxygen single bond in the compound of general formula (I); PUG represents a photographically useful group; t is an integer of 0 or 1; the full lines in the formula each means a bond; and the dotted lines therein mean that at least one of the dotted lines is a bond.In particular, compounds of the following formula (II) and (III) are preferred among those of the formula (I): ##STR2## wherein R.sup.3 is bonded to the nitrogen atom or oxygen atom in the formula, and represents an atomic group necessary for the formation of a 3 to 8-membered mono- or fused-hetero ring; ##STR3## wherein R.sup.4 and R.sup.5 each represents a mere bond, a hydrogen atom or a substituent group, and they may be bonded to each other to form a saturated or unsaturated carbon ring or hetero ring; and X represents a divalent binding group.
摘要:
A silver halide photographic material is described, having at least one light-sensitive silver halide emulsion layer containing an iodine-containing silver halide on a support and having one or more auxiliary layers on the outermost surface of a light-sensitive silver halide emulsion layer positioned farthest from the support, wherein at least one of the auxiliary layers contains a substantially non-light-sensitive silver halide emulsion or a silver halide emulsion containing grains whose inner part or surface part is fogged, and the material contains at least one compound represented by formula (I) ##STR1## wherein R, X, Y, Z, and n are described in the specification.
摘要:
A silver halide photographic material containing at least one of compounds represented by formula (I) and salts thereof in at least one hydrophilic colloidal layer of the silver halide photographic material gives photographic images having stable and excellent quality without being accompanied by the increased formation of fog and increased changes of sensitivity and gradation upon high temperature processing: ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic ring group; or one or both of said R.sub.1 and R.sub.2 and said R.sub.3 and R.sub.4 combine with each other to form a ring.
摘要:
A silver halide light-sensitive material comprising a support having provided thereon at least one silver halide emulsion layer is disclosed. The emulsion layer contains a silver halide prepared in the presence of a tetrasubstituted thiourea as a silver halide solvent and was hardened with a hardener containing a vinylsulfonyl group. Combined use of the tetrasubstituted thiourea and the hardener of the above-described kinds increases the storability of the light-sensitive material.