Rhodia Operations

Flavie Sarrazin

Sergio Mastroianni

Laurent Garel

Olivier Back

Gérard Mignani

Sandra Chouzier

Mathieu Pucheault

Simon Rousseau

Kevin Olivon

A process for preparing an aromatic compound or compounds where at least one mandelic group &#x2014;CHOH&#x2014;COOH is described, comprising a reaction for condensation of at least one aromatic compound with glyoxylic acid or derivatives thereof, wherein said condensation reaction is carried out substantially in the absence of any acid or any base added to the reaction medium. The condensation reaction is followed by an oxidation reaction in order to obtain aromatic aldehyde.

Process for preparing mandelic aromatic compounds and aromatic aldehyde compounds

A process for preparing dicarboxylic acids is described. More particularly a process is described for preparing adipic acid (1,6-hexanedioic acid), by the action of nitric acid, starting from cyclic ketones or alcohols which are the corresponding compounds from the standpoint of the number of carbon atoms, in the presence of one or more oxides of nitrogen at a molar concentration in the reaction mixture of greater than 2.5 mmol per kg of reaction mixture.

Process for preparing dicarboxylic acids

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Talence, France

Flavie Sarrazin