Arxada Ag

Lonza Inc.

Ulrich Mayerhoeffer

Stefan Ellinger

Christoph Taeschler

Christian Schnider

Gaetano La Delfa

Stefan Tille

Michael Bittel

Leo Schmid

Ellen Klegraf

Claudio Arnold

Anja Bierstedt

Thomas Eggel

Emilia Paunescu

Fabian Meemken

Christophe Girard

Eva Kirchner

Kai Lechner

Masaki Nakajima

Maximilian Kuehnle

Martin Venetz

Kilian Schnydrig

Guy Raboud

Manuel Favre

Stefan Garms

Rolf Kalbermatten

Jean Fournier

Sebastian Benz

Janis Michel

Marianne Haedener

Florian Dardano

The present invention relates to a process for the preparation of phenyl ketones and the preparation of phenoxyphenyl derivatives.

Process for the preparation of phenyl ketones

The invention discloses a method for preparation of an acetoacetylated polyol by reaction of a polyol with deketene in the presence of a base and in the absence of a solvent.

Method for preparation of acetoacetylated polyols

The invention discloses a method for the continuous preparation of n-butyl nitrite with a low content of n-butanol comprising the reaction of n-butanol, an acid and NaNOin a continuous way, in which the n-butanol, an acid and NaNOare mixed in a mixing device which provides for a pressure drop of at least 1 bar; the acid is selected from the group consisting of HCI, HSO, formic acid, methanesulfonic acid, and mixtures thereof; and the amount of HCI is at least 1.02 molar equivalent based on the molar amount of n-butanol.

Method for preparation of n-butyl nitrite

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Visp, Switzerland

Ulrich Mayerhoeffer