Process for preparing disulfones

Details Process for preparing disulfones Process for preparing disulfones

C - Chemistry, Metallurgy

07

C

260/438, 260/593

C07C 315/00 (2006.01) C07C 317/04 (2006.01)

Patent

CA 2030796

The subject matter of the invention is a process of synthesis of sulphonylmethanes and their derivatives corresponding to the formula M[(RSO2)2CH]m (I), in which M represents H, an alkaline or alkaline-earth metal or (a), R' and R are monovalent organic radicals and m represents the valency of M. The process is characterised by the fact that an ionic carbide is made to react with a sulphonyl halide, the product of which is hydrolysed; before or after hydrolysis, a compound MyYm is added to the reactive medium, Y representing an anion capable of forming, with the cation of the ionic carbide, a compound which can be separated from the compound (I), and y representing the valency of Y.

2030796 9012000 PCTABS00102 L'invention a pour objet un procédé de synthèse de sulfonylméthanes et leurs dérivés répondant à la formule (I): M[(RSO2)2CH]m, dans laquelle M représente H, un métal alcalin ou alcalino-terreux ou (a), R' et R sont des radicaux organiques monovalents et m représente la valence de M. Le procédé est caractérisé en ce que l'on fait réagir un carbure ionique avec un halogénure de sulfonyle, on hydrolyse le produit obtenu, l'on ajoute au milieu réactionnel, avant ou après hydrolyse un composé MyYm, Y représentant un anion capable de former, avec le cation du carbure ionique, un composé qui peut être séparé du composé (I), et y représente la valence de Y.

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