Degussa Aktiengesellschaft

Oliver Meyer

Michael Korell

Karlheinz Drauz

Manfred Kaufhold

Robert L Augustine

Setrak K Tanielyan

Kerstin Bodmann

Renate Paulczynski

Thomas Kalz

Jürgen Fieker

Renate Uhlenberg

The invention relates to a process for ketalizing triacetonamine by reacting triacetonamine and a hydroxyl derivative, for example, a mono- or polyhydric alcohol, with gaseous hydrogen chloride to give an open-chain or cyclic ketal.

Preparation of ketals

The present invention is directed to a process for the synthesis of monoalkylated C&#x2014;H acidic methylene group-containing compounds, such as malonic esters, and malonic ester nitriles.

Process for monoalkylation of C-H acidic methylene groups

An alcohol can be oxidized by a process in which a primary or secondary alcohol are reacted with an oxygen-containing gas in the presence of a catalyst composition containing (i) a stable free nitroxyl radical derivative, (ii) a nitrate source, (iii) a bromide source, and (iiii) a carboxylic acid, thereby obtaining an aldehyde or a ketone.

Process for transition metal free catalytic aerobic oxidation of alcohols under mild conditions using stable free nitroxyl radicals

The present invention is directed to a method for producing amino acids by reacting halogenated carboxylic acid ester (haloacid esters) with a metal cyanate in the presence of an alcohol and by subsequent acidic saponification of the urethane carbonic acid formed. The method is characterized by the metal cyanate being placed at an elevated temperature in an organic solvent and the other reactants being continuously charged into the mixture over a defined time period.

Method of producing amino carboxylic acids

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Muenster, Germany

Oliver Meyer