Abstract: The application relates to a process for the work-up of a reaction mixture (RM) comprising cyclododecatriene and an active catalyst system (C) comprising an organoaluminum compound, said process comprising the steps of: a) contacting the reaction mixture (RM) with gaseous ammonia to obtain a first mixture (M1), b) contacting the first mixture (M1) with water to obtain a second mixture (M2), c) distillatively removing cyclododecatriene from the second mixture (M2).

Abstract: The invention relates to a process for preparing nitroalkanes by reaction of at least one alkane with at least one nitrating agent in the gas phase, wherein the nitration is carried out in a microstructured reaction zone having parallel channels having hydraulic diameters of less than 2.5 mm and a total specific internal surface area of more than 1600 m2/m3 and the alkane and the nitrating agent are conveyed under a pressure of from 1 bar to 20 bar through the reaction zone and reacted at a temperature of from 150° C. to 650° C. and the reaction products are cooled downstream of the reaction zone and discharged and the at least one nitrating agent is introduced over from two to ten introduction points along the reaction zone.

Abstract: The invention relates to a process for preparing nitroalkanes by reaction of at least one alkane with at least one nitrating agent in the gas phase, wherein the nitration is carried out in a microstructured reaction zone having parallel channels having hydraulic diameters of less than 2.5 mm and a total specific internal surface area of more than 1600 m2/m3 and the alkane and the nitrating agent are conveyed under a pressure of from 1 bar to 20 bar through the reaction zone and reacted at a temperature of from 150° C. to 650° C. and the reaction products are cooled downstream of the reaction zone and discharged and the at least one nitrating agent is introduced over from two to ten introduction points along the reaction zone.

Abstract: Ketones of the formula II where A is optionally alkyl-substituted C2-C12-alkanediyl, R1 and R2 are each, independently of one another, C1-C6-alkyl, or R1 and R2 together form optionally alkyl-substituted C3-C10-alkanediyl, and R3 is hydrogen or C1-C6-alkyl, are prepared by reacting a cyclic olefin of the formula I with dinitrogen monoxide to form the ketone of the formula II. The ketone of the formula II can be further hydrogenated to form the saturated ketone of the formula III. Macrocyclic ketones of the formula III, e.g. muscone, are sought after as fragrances.

Abstract: The present invention relates to a process for preparing at least one monocyclic ketone having from 4 to 20 carbon atoms by reacting a mixture G1 comprising at least one monocyclic olefin having from 4 to 20 carbon atoms with a mixture G2 comprising at least dinitrogen monoxide, wherein said reaction is performed adiabatically.

Abstract: The present invention relates to a process for preparing a ketone, comprising the reaction of a composition (I) at least comprising a 1,1-disubstituted olefin, with a composition comprising dinitrogen monoxide, wherein the reaction is effected in the presence of a solvent which comprises at least one proton-donating functional group.

Abstract: The present invention relates to a process for preparing 4-pentenoic acid, at least comprising the oxidation of a mixture (G) comprising 4-pentenal, 3-methyl-2-butanone and cyclopentene oxide, and to the use of a mixture (G) comprising 4-pentenal, 3-methyl-2-butanone and cyclopentene oxide for preparing 4-pentenoic acid. In the context of the present invention, the mixture (G) is preferably obtained as a by-product of the oxidation of cyclopentene to cyclopentanone by means of dinitrogen monoxide.

Abstract: The present invention relates to a process for preparing at least one compound with Z?1 cycles and 7 to 16 carbon atoms with at least one aldehyde group, at least comprising the stages: (a1) oxidation of a composition (A), at least comprising a cyclic olefin with Z cycles and 7 to 16 carbon atoms and at least two C—C double bonds, by means of dinitrogen monoxide to give a composition (A1), (a2) separating off the at least one cyclic olefin with Z cycles and 7 to 16 carbon atoms with at least two C—C double bonds from the composition (A1) from stage (a1) in order to obtain a composition (A2), (b1) separating off the at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group from the composition (A2) from step (a2), in order to obtain a composition (B1), comprising at least 50% by weight of the at least one compound with Z?1 cycles and 7 to 16 carbon atoms with at least one aldehyde group and at least two C—C double bonds, where Z may be 1, 2, 3 or 4.

Abstract: The present invention relates to a process for preparing at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group, at least comprising the stages: (a1) oxidation of a composition (A), at least comprising one cyclic olefin with Z cycles and 7 to 16 carbon atoms and at least two C—C double bonds, by means of dinitrogen monoxide to give a composition (A1), (a2) separating off the at least one cyclic olefin with Z cycles and 7 to 16 carbon atoms with at least two C—C double bonds from the composition (A1) in order to obtain a composition (A2), and (b) distillative treatment of the composition (A2) from step (a2) in order to obtain a composition (B), comprising the at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group and less than 1.0% by weight of the at least one compound with Z?1 cycles and 7 to 16 carbon atoms with at least one aldehyde group, where Z can be 1, 2, 3 or 4.

Abstract: The invention provides a method for producing polyols, comprising the steps of a) reacting unsaturated natural fats, unsaturated natural fatty acids and/or fatty acid esters with dinitrogen monoxide, b) reacting the product obtained in step a) with hydrogen using a heterogeneous catalyst.

Abstract: A method for producing a polyol, the method including: (a) reacting at least one selected from the group consisting of an unsaturated natural fat, an unsaturated natural fatty acid, and a fatty acid ester with dinitrogen monoxide, to obtain a first intermediate; (b) reacting the first intermediate with a hydrogenation reagent, to obtain a second intermediate; (c) reacting the second intermediate with at least one alkylene oxide, to obtain a polyol.

Abstract: Ketones of the formula II where A is optionally alkyl-substituted C2-C12-alkanediyl, R1 and R2 are each, independently of one another, C1-C6-alkyl, or R1 and R2 together form optionally alkyl-substituted C3-C10-alkanediyl, and R3 is hydrogen or C1-C6-alkyl, are prepared by reacting a cyclic olefin of the formula I with dinitrogen monoxide to form the ketone of the formula II. The ketone of the formula II can be further hydrogenated to form the saturated ketone of the formula III. Macrocyclic ketones of the formula III, e.g. muscone, are sought after as fragrances.

Abstract: The present invention relates to a process for preparing a ketone, comprising the reaction of a composition (I) at least comprising a 1,1-disubstituted olefin, with a composition comprising dinitrogen monoxide, wherein the reaction is effected in the presence of a solvent which comprises at least one proton-donating functional group.

Abstract: The present invention relates to a process for preparing at least one monocyclic ketone having from 4 to 20 carbon atoms by reacting a mixture G1 comprising at least one monocyclic olefin having from 4 to 20 carbon atoms with a mixture G2 comprising at least dinitrogen monoxide, wherein said reaction is performed adiabatically.

Abstract: The present invention relates to a process for preparing 4-pentenoic acid, at least comprising the oxidation of a mixture (G) comprising 4-pentenal, 3-methyl-2-butanone and cyclopentene oxide, and to the use of a mixture (G) comprising 4-pentenal, 3-methyl-2-butanone and cyclopentene oxide for preparing 4-pentenoic acid. In the context of the present invention, the mixture (G) is preferably obtained as a by-product of the oxidation of cyclopentene to cyclopentanone by means of dinitrogen monoxide.

Abstract: The present invention relates to a process for preparing at least one compound with Z?1 cycles and 7 to 16 carbon atoms with at least one aldehyde group, at least comprising the stages: (a1) oxidation of a composition (A), at least comprising a cyclic olefin with Z cycles and 7 to 16 carbon atoms and at least two C—C double bonds, by means of dinitrogen monoxide to give a composition (A1), (a2) separating off the at least one cyclic olefin with Z cycles and 7 to 16 carbon atoms with at least two C—C double bonds from the composition (A1) from stage (a1) in order to obtain a composition (A2), (b1) separating off the at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group from the composition (A2) from step (a2), in order to obtain a composition (B1), comprising at least 50% by weight of the at least one compound with Z?1 cycles and 7 to 16 carbon atoms with at least one aldehyde group and at least two C—C double bonds, where Z may be 1, 2, 3 or 4.

Abstract: The present invention relates to a process for preparing at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group, at least comprising the stages: (a1) oxidation of a composition (A), at least comprising one cyclic olefin with Z cycles and 7 to 16 carbon atoms and at least two C—C double bonds, by means of dinitrogen monoxide to give a composition (A1), (a2) separating off the at least one cyclic olefin with Z cycles and 7 to 16 carbon atoms with at least two C—C double bonds from the composition (A1) in order to obtain a composition (A2), and (b) distillative treatment of the composition (A2) from step (a2) in order to obtain a composition (B), comprising the at least one cyclic compound with Z cycles and 7 to 16 carbon atoms with a keto group and less than 1.0% by weight of the at least one compound with Z?1 cycles and 7 to 16 carbon atoms with at least one aldehyde group, where Z can be 1, 2, 3 or 4.