Abstract: Process for making a compound represented by formula (3), comprising the following steps: a) reacting an azide compound with a compound represented by formula (1) to yield compound (2), compound (2) being a compound represented by formula (2) or its salts, b) methylating compound (2) obtained in step a) using a methylating agent to obtain compound (3), wherein R1 denotes a hydrocarbon rest, and wherein in step a) a solvent system A and in step b) a solvent system B is used, wherein both solvent systems A and B comprise one dipolar aprotic solvent or a mixture of dipolar aprotic solvents as the main component, and wherein steps a) and b) are carried without isolating the compound (2) obtained in step a).

Abstract: The invention relates to a process for the preparation of a tetrazolinone compound, comprising a step of reacting an isocyanate compound with an azide salt in a solvent and in the presence of a silicon derivative as a catalyst.

Abstract: The invention relates to a process for the preparation of 1-(2-methoxymethyl-3-methylphenyl)4H-tetrazolin-5-one, comprising a step of reacting an isocyanate compound with an azide salt in a solvent and in the presence of a silicon derivative as a catalyst.

Abstract: The invention relates to a compound of the general formula (I) N3O2S—Ar-L-Ar?—SO2N3, wherein: —Ar and Ar? are aromatic building blocks; and —L is a linking group comprising at least one heteroatom as well as an organic chain denoted as Sp? and having at least two carbon atoms. The invention also relates to a compound of the general formula (II) wherein: —Ar and Ar? are aromatic building blocks; —L is a covalent bond or a linking group; —m and n are both 0 or 1, at least one of m and n being 1; —Sp and Sp? are organic chains having at least two carbon atoms. The invention also relates to the use of these compounds as cross linking agents in the manufacture of polymers.

Abstract: This application relates to a process for making a pharmaceutically acceptable formulation of gadofosveset trisodium monohydrate, wherein the process uses no more than one chromatographic purification for removal of impurities.

Abstract: The invention relates to a compound of the general formula (I) N3O2S—Ar-L-Ar?—SO2N3, wherein: —Ar and Ar? are aromatic building blocks; and —L is a linking group comprising at least one heteroatom as well as an organic chain denoted as Sp? and having at least two carbon atoms. The invention also relates to a compound of the general formula (II) wherein: —Ar and Ar? are aromatic building blocks; —L is a covalent bond or a linking group; —m and n are both 0 or 1, at least one of m and n being 1; —Sp and Sp? are organic chains having at least two carbon atoms.

Abstract: This application relates to a process for making a pharmaceutically acceptable formulation of gadofosveset trisodium monohydrate, wherein the process uses no more than one chromatographic purification for removal of impurities.

Abstract: The object of the present invention is the use of phosphonium salts in coupling reactions, and a method for their preparation.

Abstract: The object of the present invention is the use of phosphonium salts in coupling reactions, and a method for their preparation.

Abstract: The invention relates to a method for producing azidoalkyl amines. According to said method, in a first step a bifunctional alkane comprising two different nucleofugic groups is reacted with an azide to form a monofunctional azidoalkane, during which process one nucleofugic group is cleaved and in a second step, the monofunctional azidoalkane is reacted with a primary or secondary amine to form azidoalkyl amine, during which process the second nucleofugic group is cleaved.

Abstract: A color photographic silver halide material having a support, which material comprises at last one blue-sensitive, yellow-coupling silver halide emulsion layer and at least one green-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer, and which contains at least one masking coupler which has two chromophores which absorb in the wavelength range from 420 to 750 nm and are eliminable or decolorizable by coupling with the developer oxidation product, is distinguished by improved sensitivity associated with undiminished color purity.

Abstract: A color photographic silver halide material, which has a support which comprises at least one blue-sensitive, yellow-coupling silver halide emulsion layer nearest the light source and at least one green-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer which are further from the light source than is the at least one blue-sensitive layer, and which contains at least one cyan masking coupler which has its maximum absorption above 650 mn, the red-sensitive layers have their maximum sensitivity at 620±20 nm and the absorption of the masking coupler at the maximum sensitivity of the red-sensitive layers is at most 70% of its absorption at 690 mn, is distinguished by improved color reproduction and color saturation in the magenta layer without loss of sensitivity.

Abstract: A color photographic silver halide material having a support, which material comprises at last one blue-sensitive, yellow-coupling silver halide emulsion layer and at least one geen-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer, and which contains at least one masking coupler which has two chromophores which absorb in the wavelength range from 420 to 750 nm and are eliminable or decolorisable by coupling with the developer oxidation product, is distinguished by improved sensitivity associated with undiminished color purity.

Abstract: A colour photographic silver halide material having a support and at least one photo-sensitive silver halide emulsion layer which is associated with a cyan coupler of the formula (I): in which R1, R2, R3, Z1, Y1 and n have the meaning stated in the description, is distinguished by elevated dye stability of the dye produced from the coupler by chromogenic processing.

Abstract: A color photographic silver halide material having a support and at least one photosensitive silver halide emulsion layer which is associated with a cyan coupler of the formula (I): in which R1, R2, R3, Z1, Y1 and n have the meaning stated in the description, is distinguished by elevated dye stability of the dye produced from the coupler by chromogenic processing.

Abstract: A colour photographic silver halide material, which has a support which comprises at least one blue-sensitive, yellow-coupling silver halide emulsion layer nearest the light source and at least one green-sensitive, magenta-coupling silver halide emulsion layer and at least one red-sensitive, cyan-coupling silver halide emulsion layer which are further from the light source than is the at least one blue-sensitive layer, and which contains at least one cyan masking coupler which has its maximum absorption above 650 mn, the red-sensitive layers have their maximum sensitivity at 620±20 nm and the absorption of the masking coupler at the maximum sensitivity of the red-sensitive layers is at most 70% of its absorption at 690 mn, is distinguished by improved colour reproduction and colour saturation in the magenta layer without loss of sensitivity.

Abstract: A color photographic silver halide material having a support and at least one photosensitive silver halide emulsion layer which is associated with a cyan coupler of the formula (I): 1