Lonza Inc.

Lonza Ag

Basel

Wolfgang Wenger

Paul Hanselmann

Ellen Klegraf

Herbert Vogel

Cornelia Zur Taschler

Andreas Heyl

Lothar Ott

Gökhan Aras

Process for removing hydrogen cyanide from ethanedinitrile by contacting hydrogen cyanide-containing ethanedinitrile with an organic reagent under formation of a covalent bond.

Process for removing hydrogen cyanide from ethanedinitrile

The present invention relates to novel tricyanoborates of the general formula Cat[B(CN)(XR)]&#x2014;, wherein Ris Calkyl, Calkenyl, Caryl or benzyl; X is oxygen or sulfur; and Catis a cation with n being 1 or 2, which is selected from the group consisting of an inorganic cation and an organic cation; and also their preparation and use.

Tricyanoborates

The present invention relates to a process for the selective preparation of acetaldehyde, characterized in that acrolein and one or more ammonium salts dissolved in water are reacted continuously under high pressures and at temperatures of 300-400&#xb0; C.

Process for the selective preparation of acetaldehyde from acrolein and one or more ammonium salts dissolved in water

A method for the production of 6,6,6-trihalo-3,5-dioxohexanic acid esters of formula (I): in addition to the enols thereof and &#x3c;I&#x3e;E&#x3c;/I&#x3e; and &#x3c;I&#x3e;Z&#x3c;/I&#x3e; isomers, wherein X independently represents fluorine, chlorine or bromine and Rrepresents alkyl, cycloalkyl, aryl or aralkyl. A method for the production of enol ethers of formula (Ib): and the enols thereof (E and Z isomers) wherein X and Rhave the above-mentioned meanings.

Method for the production of 6,6,6-trihalo-3,5-dioxohexanoic acid esters

A method for the production of 6,6,6-trihalo-3,5-dioxohexanoic acid esters of formula (I): in addition to the enols thereof and &#x3c;I&#x3e;E&#x3c;/I&#x3e; and &#x3c;I&#x3e;Z&#x3c;/I&#x3e; isomers, wherein X independently represents fluorine, chlorine or bromine and Rrepresents alkyl, cycloalkyl, aryl or aralkyl. A method for the production of enol ethers of formula (Ib): and the enols thereof (E and Z isomers) wherein X and Rhave the above-mentioned meanings.

A method for the production of 6,6,6-trihalo-3,5-dioxhexanoic acid esters of formula (I): in addition to the enols thereof and &#x3c;I&#x3e;E&#x3c;/I&#x3e; and &#x3c;I&#x3e;Z&#x3c;/I&#x3e; isomers, wherein X independently represents fluorine, chlorine or bromine and Rrepresents alkyl, cycloalkyl, aryl or aralkyl. A method for the production of enol ethers of formula (Ib): and the enols thereof (E and Z isomers) wherein X and Rhave the above-mentioned meanings.

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Visp, Switzerland

Wolfgang Wenger