C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 319/14 (2006.01) C07C 303/16 (2006.01) C07C 309/80 (2006.01) C07C 323/03 (2006.01)
Patent
CA 2491207
The invention concerns a method for synthesis of hydrogenofluoromethylenesulphonyl radical derivatives, comprising: a) a step which consists in condensing a thiolate (that is a monoalkyl sulphide salt) with a compound having a sp?3¿ hybridized carbon bearing a hydrogen, a fluorine, a heavy halogen selected among chlorine, bromine and iodine and an electron-attracting group selected among fluorine and those whereof the .sigma.¿p? is not less than 0.2, advantageously than 0.4; b) a step which consists in oxidizing the compound obtained in step a). The invention is applicable to the synthesis of various compounds having a suphinyl or sulphonyl group.
La présente invention vise un procédé de synthèse de dérivés à radical hydrogénofluorométhylènesulfonyle. Ce procédé comporte a) une étape de condensation d'un thiolate (c'est-à-dire un sel de sulfure de monoalcoyle) avec un composé présentant un carbone d'hybridation sp3 porteur d'un hydrogène, d'un fluor, d'un halogène lourd choisi parmi le chlore, le brome et l'iode et d'un groupe électroattracteur choisi parmi le fluor et ceux dont le Op est au moins égal à 0,2, avantageusement à 0,4; b) une étape d'oxydation du composé obtenu dans l'étape a). Application à la synthèse de divers composés ayant un groupe sulfinyle ou sulfonyle.
Rhodia Chimie
Robic
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