Abstract:
La présente invention concerne un procédé de préparation d'un dérivé oxysulfuré et fluoré de formule (III) Ea-SO 3 R (III) comprenant la mise en contact, en présence d'un solvant organique aprotique polaire, d'un composé de formule (II) Ea-SOOR (II) - Ea représentant l'atome de fluor ou un groupe ayant de 1 à 10 atomes de carbone choisi parmi les fluoroalkyles, les perfluoroalkyles et les fiuoroalkényles; et - R représentant l'hydrogène, un cation monovalent ou un groupe alkyle; avec un agent oxydant.
Abstract:
The present invention relates to purified 3-methanesulfonylpropionitrile or a pharmaceutically acceptable salt thereof, and a method for preparing such compound. The compound has at least 90% (w/w) purity. The present invention is also directed to a pharmaceutical composition comprises the purified compound and a pharmaceutically acceptable carrier. The present invention is further directed to a method for treating inflammation, inflammatory-related disorders, or pain, by administering 3-methanesulfonylpropionitrile or a pharmaceutically acceptable salt or solvate thereof to a subject in need thereof.
Abstract:
Novel preparative methods for fluoroalkyl arylsulfinyl compounds are disclosed. Fluorinated compounds as useful fluorinated compounds, intermediates, or builing blocks are disclosed. Useful applications of the fluoroalkyl arylsulfinyl compounds are shown.
Abstract:
The invention provides a process for the preparation of fluorinated alkanesulfonic acid anhydrides by contacting alkanesulfonic acids with phosphorus pentoxide, the phosphorus pentoxide being provided as a dispersion in an inert oil. The invention also provides novel fluorinated alkanesulfonic acid anhydrides including 2-hydrotetrafluoroethanesulfonic acid anhydride.
Abstract:
Compounds of the formula (I), (Il) or (III), wherein R 1 is for example C 1 -C 18 alkylsulfonyl, C 1 -C 10 haloalkylsulfonyl, camphorylsulfonyl, phenyl-C 1 -C 3 alkylsulfonyl, phenylsulfonyl, naphthylsulfonyl, anthrylsulfonyl, phenanthrylsulfonyl or heteroarylsulfonyl, R' 1 is for example phenylenedisulfonyl, R 2 is for example CN, C 1 -C 10 haloalkyl or C 1 -C 10 haloalkyl which is substituted by (IV); Ar 1 is for example phenyl optinally substituted by a group of formula (IV); Ar' 1 is for example phenylene which optionally is substituted by a group of formula (IV); A 1 , A 2 and A 3 independently of each other are for example hydrogen, halogen, CN, or C 1 -C 18 alkyl; D 2 is for example a direct bond, O, (CO)O, (CO)S, SO 2 , OSO 2 or C 1 -C 18 alkylene; or A 3 and D 2 together form C 3 -C 30 cycloalkenyl; or A 2 and D 2 together with the carbon of the ethylenically unsaturated double bond to which they are attached form C 3 -C 30 cycloalkyl; D 3 and D 4 for example independently of each other are a direct bond, O, S, C 1 -C 18 alkylene or C 3 -C 30 cycloalkylene provided that at least one of the radicals R 2 , Ar 1 or Ar 1 ' comprises a group of the formula (IV); are suitable as photolatent acid donors and for the preparation of corresponding polymers to be employed in chemically amplified photoresists.
Abstract:
The present invention relates to an absorption cycle comprising a refrigerant pair comprising at least one refrigerant and at least one ionic liquid. The present invention also provides an absorption cycle that utilizes fluorocarbon gases in fluorinated ionic liquids. The present invention also provides a method of cooling using an absorption cycle comprising a refrigerant pair comprising at least one refrigerant and at least one ionic liquid. The present invention also provides a method of heating using an absorption cycle comprising a refrigerant pair comprising at least one refrigerant and at least one ionic liquid.
Abstract:
The present invention is directed to alkylxylene sulfonate for enhanced oil recovery processes. The alkylxylene moiety in the alkylxylene sulfonate contains a high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and a high percentage of alkyl group attachment to the xylene ring at positions higher than the 2-position on the alkyl carbon chain. The present invention is also directed to a method for enhancing the recovery of oil from a subterranean reservoir which method employs the alkylxylene sulfonate of the present invention. The alkylxylene sulfonate is employed in an aqueous media. The method optionally employs co-surfactants. It has surprisingly been discovered that the high percentage of the 4-alkyl-1,2-dimethyl benzene isomer and the high percentage alkyl group attachment to the xylene moiety at positions higher than the 2-position along the alkyl carbon chain on the alkylxylene sulfonate of the present invention provides an enhanced oil recovery (EOR) surfactant having low Interfacial Tension (IFT).