Process for the synthesis of sulfonyl halides and...

C - Chemistry – Metallurgy – 07 – C

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C07C 303/22 (2006.01) C07C 303/38 (2006.01) C07D 209/22 (2006.01)

Patent

CA 2610228

The present invention provides synthetic processes for the preparation of sulfonyl halides of Formula Ar- (R) 2-SO2-X and sulfonamides of Formula Ar- (R)2-SO2- NR4R5, where the constituent variables are as defined herein, that are useful as intermediates in the preparation of pharmaceuticals. The sulfonyl halides are prepared by reacting a sulfonic acid salt with a halogen substitution reagent in the presence of a catalytic amount of water and in the presence of a co-catalyst . The so prepared halides can than be further reacted with an amine to obtain the sulfonamides.

L'invention concerne des procédés de synthèse destinés à la préparation d'halogénures de sulfonyle de formule Ar-(R)2-SO2-X et de sulfonamides de formule Ar-(R)2-SO2- NR4R5, les variables constituantes étant telles que définies dans la description, et utiles en tant qu'intermédiaires dans la préparation de produits pharmaceutiques.

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