摘要:
An intermediate, 5-Acyl-4,5,6,7-tetrahydrothieno [3,2-c ]pyridine- 2-carboxylic acid derivative of the following general formula (I): ##STR1## wherein R.sup.1 represents an acyl group and R.sup.2 represents a hydrogen atom or an alkyl group is useful for synthesizing ticlopidine hydrochloride from an inexpensive, easily available compound in short steps.
摘要:
A silver halide color photographic material containing one or more imidazotriazole cyan couplers each having an electron attracting group with a .sigma.p of 0.35 or more in at least one layer on the support. The material provides a cyan color image having a sharp light absorption characteristic absorbing light having a relatively long wavelength falling within a narrow wavelength range. The imidazotriazole cyan coupler is of the following structural formula (I): ##STR1## where R.sub.1 represents a hydrogen atom or a substituent; R.sub.2 represents an electron attracting group having a Hammett's constant value .sigma.p of 0.35 or ore; X represents a hydrogen atom or a group released by coupling with an oxidation product of an aromatic primary amine color developing agent; and R.sub.1 or R.sub.2 may also be a divalent group forming a dimer or higher polymer, or they each may be bonded to a polymer chain to form a homopolymer or copolymer.
摘要:
There is disclosed a cyan dye-forming coupler represented by formula (I) and a silver color photographic material containing same. ##STR1## wherein EWG represents an electron-attractive group having a Hammett substituent constant .sigma..sub.p value of 0.30 or more, R represents a substituent, l represents an integer of 0 to 2, X represents a hydrogen atom or a group capable of being released upon coupling reaction with the oxidized product of an aromatic primary amine derivative, R and EWG may bond together to form a ring, and when l is 2, two Rs may be the same or different or may bond together to form a ring.
摘要:
A method of forming a cyan dye image in an exposed silver halide color photographic material comprising a support and a photosensitive silver halide emulsion, said method comprising developing the exposed silver halide color photographic material with a color developing solution containing an aromatic primary amine color developing agent in the presence of a cyan coupler represented by formula (I): ##STR1## wherein EWG.sub.1 and EWG.sub.2 each represents an electron attractive group having a Hammett's substituent constant .sigma..sub.p value of at least 0.30 or;R.sub.1 represents a hydrogen atom or a substituent;R.sub.2 represents a substituent;X represents a hydrogen atom or a group capable of splitting off by a coupling reaction with an oxidation product of an aromatic primary amine color developing agent;R.sub.1 and R.sub.2 may be bonded to each other to form a ring; provided that R.sub.2 must not be a halogen atom; and a silver halide color photographic material containing the cyan dye forming coupler.
摘要:
A light-sensitive material comprising a support and a light-sensitive layer which contains silver halide, a reducing agent, a polymerizable compound and an azo-compound having the following formula:Ri--N.dbd.N--Cpin which Ri is an aryl group or a heterocyclic group, each of which may have one or more substituent groups; Cp is a group having a function of coupling with an oxidation product of the reducing agent. Image-forming methods utilizing the light-sensitive materials are also disclosed.
摘要:
A metal-containing organic polymer produced by the step of polymerizing a compound represented by formula (I):(R--C.tbd.C).sub.l).sub.k k (L) (S).sub.m (I)whereinS represents a hydrogen atom, a hydroxy group, an amino group, a mercapto group, a polyoxyether group, a polyaminoether group, a polythioether group, a sulfino group or a salt thereof, a sulfo group or a salt thereof, a carboxyl group or a salt thereof or a polymerizable group;R represents a metallic atom, a hydrogen atom, or a group --COOM wherein M represents a hydrogen atom or a metallic atom;provided that when R represents a carboxyl group or a hydrogen atom, said compound represented by formula (I) is polymerized in the presence of a metallic salt;L represents a chemical bond or a group having a valency of (k+m); andl, k and m each represents an integer of 1 or more.
摘要:
A process for formation of a base from a base precursor, which comprises decomposing the base precursor in the presence of a catalyst. The base precursor has the following formula (I) or (II):(R.sup.1 --C.tbd.C--CO.sub.2 H).sub.x .multidot.B (I)R.sup.2 (--C.tbd.C--CO.sub.2 H).sub.2 .multidot.B.sub.y (II)wherein R.sup.1 is a monovalent group selected from the group consisting of hydrogen, an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aryl group, a heterocyclic group, an aralkyl group, an acyl group, an alkoxycarbonyl group, carbamoyl, --CO.sub.2 M (M is an alkali metal) and --CO.sub.2 H.B, each of which may have one or more substituent groups; R.sup.2 is a divalent group selected from the group consisting of an alkylene group, an arylene group and a divalent heterocyclic group, each of which may have one or more substituent groups; B is an organic base; x is 1 when B is a monoacidic base, and x is 2 when B is a diacidic base; and y is 2 when B is a monoacidic base, and y is 1 when B is a diacidic base. The catalyst is selected from the group consisting of silver, a silver compound, copper and a copper compound. A light-sensitive material containing the base precursor and the catalyst is also disclosed.
摘要:
A metal-containing organic polymer produced by the step of polymerizing a compound represented by formula (I):(R--C.tbd.C.sub.lk S).sub.m (I)whereinS represents a hydrogen atom, a hydroxy group, an amino group, a mercapto group, a polyoxyether group, a polyaminoether group, a polythioether group, a sulfino group or a salt thereof, a sulfo group or a salt thereof, a carboxyl group or a salt thereof or a polymerizable group;R represents a metallic atom, a hydrogen atom, or a group --COOM wherein M represents a hydrogen atom or a metallic atom;provided that when R represents a carboxyl group or a hydrogen atom, said compound represented by formula (I) is polymerized in the presence of a metallic salt;L represents a chemical bond or a group having a valency of (k+m); andl, k and m each represents an integer of 1 or more.
摘要:
A silver halide photographic material comprising a support having thereon at least one silver halide emulsion layer, at least one layer of the silver halide photographic material comprising at least one compound represented by formula (I):PWR--Time--.sub.t --POL (I)wherein PWR represents a group capable of releasing (Time--.sub.t POL upon reduction; Time represents a divalent organic group capable of releasing POL via a subsequent reaction after (Time--.sub.t POL is released from PWR; t is 0 or 1; and POL represents a polymer group.The compound represented by formula (I) is a useful functional polymer whose properties are drastically changed upon reduction and reveal photographically useful function.
摘要:
A color light-sensitive material is disclosed. The material is comprised of a support having provided thereon at least one image-forming compound represented by formula (I)(Dye--X).sub.q Y (I)wherein X, Y, q, and Dye are as defined herein. The light-sensitive material shows excellent yellow dye-transferring properties and provides a yellow dye having excellent light fastness.