Basf Se Corporation

Michael Schelper

Joaquim Henrique Teles

Anton Meier

Christian Müller

Alexander Hauk

Beatrice Röβler-Feigel

Tanja Kirchner

Susanne Szeschkus

Johann-Peter Melder

Rolf Pinkos

Klaus Ebel

Ralf Pelzer

Martin Ernst

Alwin Rehfinger

Wilhelm Ruppel

Ulrike Wegerle

Christian Mueller

Gerd-Dieter Tebben

Kai Gumlich

Ralf Boehling

Thomas Genger

Ralf Böhling

Peter Resch

Andreas Kunst

Christoph Stock

Mathieu Chabanas

Michael Hayer

Jenny Reuber

Beatrice Roessler-Feigel

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 m/mand 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&#xb0; C. to 650&#xb0; 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.

Method for producing nitroalkanes in a microstructured reactor

Ketones of the formula II where A is optionally alkyl-substituted C-C-alkanediyl, Rand Rare each, independently of one another, C-C-alkyl, or Rand Rtogether form optionally alkyl-substituted C-C-alkanediyl, and Ris hydrogen or C-C-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.

Process for preparing ketones, in particular macrocyclic ketones

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 Gcomprising at least one monocyclic olefin having from 4 to 20 carbon atoms with a mixture Gcomprising at least dinitrogen monoxide, wherein said reaction is performed adiabatically.

Process for preparing cyclic ketones

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.

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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.

Process for preparing 4-pentenoic acid

The present invention relates to a process for preparing at least one compound with Z&#x2212;1 cycles and 7 to 16 carbon atoms with at least one aldehyde group, at least comprising the stages:

Process for the isolation of dodecatrienal and its use as aroma substance

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:

Process for preparing pure cyclododecanone

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Ludwigshafen, Germany

Michael Schelper