PROCESS FOR THE SELECTIVE META-CHLORINATION OF ALKYLANILINES

A process for the chlorination of alkylanilines is provided allowing a highly selective chlorination in the meta-position of the aromatic ring. This is achieved by reacting a mixture comprising the alkylaniline and sulfuric acid with chlorine. This process allows a meta-chlorination with a selectivi...

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Main Authors BIELER, NIKOLAUS, FURRER, MARTINA, ZUR TAESCHLER, CORNELIA, SCHMID, LEO, MUELLER, CONSTANZE, ELLINGER, STEFAN, LADNAK, VIKTOR
Format Patent
LanguageEnglish
French
Published 23.02.2012
Subjects
ACYCLIC OR CARBOCYCLIC COMPOUNDS
CHEMISTRY
METALLURGY
ORGANIC CHEMISTRY
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Summary:A process for the chlorination of alkylanilines is provided allowing a highly selective chlorination in the meta-position of the aromatic ring. This is achieved by reacting a mixture comprising the alkylaniline and sulfuric acid with chlorine. This process allows a meta-chlorination with a selectivity of more than 90%. L'invention concerne un procédé pour la chloration d'alkylanilines permettant une chloration hautement sélective en position méta du cycle aromatique. Celle-ci est obtenue par réaction d'un mélange comprenant l'alkylaniline et de l'acide sulfurique avec du chlore. Ce procédé permet une méta-chloration avec une sélectivité de plus de 90%.
Bibliography:Application Number: WO2011EP04099