摘要:
A method for preparing a 1-aryl-3-arylamino-2-pyrazolin-5-one comprises reacting an N-aryl-3-arylamino-3-oximinopropionamide with an acylating agent in an inert solvent, then heating in contact with a strong acid catalyst and a dehydrating agent in an inert solvent, and then heating in contact with an acid in water and a lower alkanol.
摘要:
A color photographic light-sensitive element comprising a support having thereon a silver halide emulsion layer containing therein a 3-anilino-5-pyrazolone magenta-color-forming coupler represented by the following general formula (I): ##STR1## wherein ##STR2## (an N-substituted acylamino group) is present at the 4- or 5-position of the anilino group; R.sub.1 represents a substituted or unsubstituted alkyl group, an alkenyl group, a cycloalkyl group, a cycloalkyl, a cycloalkenyl group or an aralkyl group; R.sub.2 represents an aliphatic hydrocarbon group, a heterocyclic group or an aryl group; X represents a halogen atom or an alkoxy group; Z represents hydrogen or a coupling-off group; and Ar represents an aryl group.The 3-anilino-5-pyrazolone magenta-color-forming coupler is useful in preventing the formation of yellow stain due to light irradiation in unexposed areas of a color photographic light-sensitive element after color development processing.
摘要:
A process for forming a color photographic image comprising processing a silver halide color photographic light-sensitive material in the presence of a magenta coupler represented by the formula (I) ##STR1## wherein R represents an acylamino group, an anilino group or a ureido group; Ar represents a substituted or unsubstituted aryl group; X represents a non-metallic divalent group forming a saturated or unsaturated 5-membered or 6-membered heterocyclic ring together with the nitrogen atom; and Y represents an acyl group or a sulfonyl group.The 2-equivalent magenta coupler represented by the formula (I) is stable to chemicals and has a good solubility to an organic solvent which is employed to incorporate couplers into a photographic light-sensitive material. A photographic light-sensitive material comprising a support having thereon at least one silver halide emulsion layer containing the 2-equivalent magenta coupler represented by the formula (I) is also disclosed.
摘要:
2-equivalent 5-pyrazolone magenta couplers having a 1,2,4-triazole with a halogen in the 3-position and a hydrogen in the 5-position thereof are particularly useful in color photographic emulsions.
摘要:
1-Substituted pyrazole-5-ones of the formula ##STR1## and pharmaceutically acceptable, nontoxic salts thereof, wherein R is hydrogen or amino;R.sup.1 is hydrogen, alkyl, alkenyl, unsubstituted or substituted aryl or unsubstituted or substituted aralky;X isa. ethylene, ethylene wherein 1 hydrogen atom on one of the carbon atoms is substituted by alkyl of 1 to 4 carbon atoms, ethylene wherein 1 hydrogen atom on each of the two carbon atoms is substituted by alkyl of 1 to 4 carbon atoms or said ethylene which is linked to R.sup.2 via an oxygen or sulphur atom;b. propenyl, propenyl wherein 1 hydrogen atom on one, two or three of the carbon atoms is substituted by alkyl of 1 to 4 carbon atoms, said propenyl being linked to the N.sup.1 atom of the pyrazol ring via its methylene moiety; orc. methylene;provided that when X is methylene, R.sup.1 is not hydrogen if R is amino;R.sup.2 is aryl unsubstituted or substituted by:a. 1 or 2 of the same or different substituents selected from the group consisting of halogen, trifluoromethyl, alkyl of 1 to 8 carbon atoms, alkenyl of 2 to 8 carbon atoms, and lower alkoxy;b. cycloalkyl of 5, 6 or 7 carbon atoms or cycloalkenyl of 5, 6 or 7 carbon atoms;c. alkylamino, dialkylamino, cyano, trifluoromethoxy, nitro, carbamoyl, alkylcarbamoyl, dialkylcarbamoyl, or said carbamoyl wherein the nitrogen atom is a member of a heterocyclic ring, sulphamyl, alkylsulphamyl, dialkylsulphamyl, or said sulphamyl wherein the nitrogen is a member of a heterocyclic ring, or --SO.sub.n alkyl wherein n is 0, 1 or 2;d. alkylamino, dialkylamino, cyano, trifluoromethoxy, nitro, carbamoyl, alkylcarbamoyl, dialkylcarbamoyl, or said carbamoyl wherein the nitrogen atom is a member of a heterocyclic ring, sulphamyl, alkylsulphamyl, dialkylsulphamyl or said sulphamyl wherein the nitrogen is a member of a heterocyclic ring, or --SO.sub.n -- alkyl wherein n is 0, 1 or 2, and 1 or 2 of the same or different substituents selected from the group consisting of alkyl, alkenyl, alkoxy, halogen, and trifluoromethyl; ore. a fused, saturated or unsaturated 5-, 6-, or 7-membered ring or said ring containing 1 or 2 oxygen or sulphur atoms;are useful for their diuretic, saluretic, antihypertensive and antithrombotic effects.
摘要:
3-Substituted amino-5-pyrazolones containing at least one sulfo group represented by the formula: ##STR1## and a process for producing the above pyrazolones by reacting a .beta.-substituted amino-.beta.-alkoxy acrylic acid derivative represented by the formula: ##STR2## and a hydrazine containing at least one sulfo group represented by the formula:NH.sub.2 --NH--Qwherein R.sup.1 is a hydrogen atom, an aliphatic group, an aralkyl group or an aryl group; R.sup.2 is an aliphatic group, an aralkyl group, a heterocyclic group, an aryl group or an acyl group; l is 0 or 1 and where l is O, R.sup.1 and R.sup.2 may combine with each other to form an alkylene group or an alkylene group interrupted by a hetero atom; R.sup.3 is an aliphatic group or an aralkyl group; X is oxygen or sulfur; Y is a hydroxy group, an alkoxy group, an aralkoxy group, or a primary, secondary or tertiary amino group; and Q is an aliphatic group, an aryl group, or an aralkyl group containing at least one sulfo group.
摘要:
A method is described for the preparation of a 1-substituted 4-methyl-2-pyrazolin-5-one by catalytic hydrogenation under pressure and simultaneous methylation by means of paraformaldehyde of the appropriate 1-substituted 2-pyrazolin-5-one in a medium of an inert organic solvent comprising ammonium acetate.
摘要:
1-Substituted pyrazole-5-ones of the formula ##SPC1##And pharmaceutically acceptable, nontoxic salts thereof, whereinR is hydrogen or amino;R.sup.1 is hydrogen, alkyl, alkenyl, unsubstituted or substituted aryl or unsubstituted or substituted aralky;X isA. ethylene, ethylene wherein 1 hydrogen atom on one of the carbon atoms is substituted by alkyl of 1 to 4 carbon atoms, ethylene wherein 1 hydrogen atom on each of the two carbon atoms is substituted by alkyl of 1 to 4 carbon atoms or said ethylene which is linked to R.sup.2 via an oxygen or sulphur atom;B. propenyl, propenyl wherein 1 hydrogen atom on one, two or three of the carbon atoms is substituted by alkyl of 1 to 4 carbon atoms, said propenyl being linked to the N.sup.1 atom of the pyrazol ring via its methylene moiety; orC. methylene;Provided that when X is methylene, R.sup.1 is not hydrogen if R is amino;R.sup.2 is aryl unsubstituted or substituted by:A. 1 or 2 of the same or different substituents selected from the group consisting of halogen, trifluoromethyl, alkyl of 1 to 8 carbon atoms, alkenyl of 2 to 8 carbon atoms and lower alkoxy;B. cycloalkyl of 5, 6 or 7 carbon atoms of cycloalkenyl of 5, 6 or 7 carbon atoms,C. alkylamino, dialkylamino, cyano, trifluoromethoxy, nitro, carbamoyl, alkylcarbamoyl, dialkylcarbamoyl, or said carbamoyl wherein the nitrogen atom is a member of a heterocyclic ring, sulphamyl, alkylsulphamyl, dialkylsulphamyl, or said sulphamyl wherein the nitrogen is a member of a heterocyclic ring, or --SO.sub.n alkyl wherein n is 0, 1 or 2;D. alkylamino, dialkylamino, cyano, trifluoromethoxy, nitro, carbamoyl, alkylcarbamoyl, dialkylcarbamoyl, or said carbamoyl wherein the nitrogen atom is a member of a heterocyclic ring, sulphamyl, alkylsulphamyl, dialkylsulphamyl or said sulphamyl wherein the nitrogen is a member of a heterocyclic ring, or --SO.sub.n -- alkyl wherein n is 0, 1 or 2, and 1 or 2 of the same or different substituents selected from the group consisting of alkyl, alkenyl, alkoxy, halogen, and trifluoromethyl; orE. a fused, saturated or unsaturated 5-, 6-, or 7-membered ring or said ring containing 1 or 2 oxygen or sulphur atoms;Are useful for their diuretic, saluretic, antihypertensive and antithrombotic effects.
摘要:
Novel magenta forming colour couplers for use in silver halide colour photography are described which correspond to the formula: ##EQU1## wherein R.sub.1 represents hydrogen, alkyl or aryl; R.sub.2 represents fluoroalkyl, cyanoalkyl or phenyl; X is hydrogen or a displaceable group; Ar represents phenylene and Y represents alkyl, aryl, alkylamino, arylamino or alkylarylamino.
摘要翻译:描述了用于卤化银彩色摄影的新型品红色成色剂,其对应于下式:CHR1R2 | N ANGLE OCN | PARALLEL XHC-C-NHArSO2Y其中R1表示氢,烷基或芳基; R 2表示氟代烷基,氰基烷基或苯基; X是氢或可置换基团; Ar表示亚苯基,Y表示烷基,芳基,烷基氨基,芳基氨基或烷基芳基氨基。
摘要:
Novel magenta-forming 3-anilino-2-pyrazolin-5-one colour couplers for use in silver halide photography are described wherein the anilino group carries an aryloxysulphonyl group.