摘要:
An ammonium hydroxyfluoroalkanesulfinate is obtained by using an organic base while sulfinating a bromofluoroalcohol with a sulfinating agent. An ammonium hydroxyfluoroalkanesulfonate is obtained by oxidizing the ammonium hydroxyfluoroalkanesulfinate. An onium fluoroalkanesulfonate is obtained by converting the ammonium hydroxyfluoroalkanesulfonate into an onium salt through esterification. This onium fluoroalkanesulfonate is useful as a photoacid generator in chemically amplified resists and the like.
摘要:
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.
摘要:
The present invention relates to a method for preparing a salt of trifluoromethanesulphinic acid termed “triflinic acid”. More specifically, the invention relates to a method for preparing a highly pure triflinic acid salt. The method of the invention for preparing a highly pure triflinic acid salt, starting from an aqueous mixture comprising the latter combined with a trifluoroacetic acid salt and saline impurities resulting from the method for preparing same, is characterized in that said mixture is subjected to the following operations: first controlled acidification such that the trifluoroacetic acid salt is essentially released in the acid form thereof, the majority of the triflinic acid remaining in a salified form, optional separation of the salts originating from the acid having been used for the acidification and recovery of an aqueous phase, separation of the trifluoroacetic acid from the separated aqueous phase comprising the alkaline salt of triflinic acid, trifluoroacetic acid, triflinic acid and the excess strong acid, therefore resulting in an aqueous phase depleted of trifluoroacetic acid but comprising the alkaline salt of triflinic acid, recovery of the alkaline salt of triflinic acid from the aqueous phase.
摘要:
Novel compounds of formula (I) wherein R1 represents hydrogen; R2 represents hydroxy, fluoro, or an oxo group; R3 represents hydrogen; R4 represents hydrogen; and pharmaceutically acceptable salts, solvates, and the stereoisomers thereof, with the exception of the racemate of (3-amino-2-hydroxypropyl)sulphinic acid. The compounds are useful in therapy, especially for the treatment of reflux disease. The invention is also related to processes for their preparation, intermediates of said process and pharmaceutical compositions containing said therapeutically active compounds and to the use of said active compounds in therapy
摘要翻译:新的式(I)化合物,其中R 1代表氢; R 2表示羟基,氟或氧代基; R 3表示氢; R 4表示氢; 和其药学上可接受的盐,溶剂合物及其立体异构体,但(3-氨基-2-羟丙基)亚磺酸的外消旋物除外。 该化合物可用于治疗,特别是用于治疗反流疾病。 本发明还涉及其制备方法,所述方法的中间体和含有所述治疗活性化合物的药物组合物和所述活性化合物在治疗中的用途
摘要:
A process for preparing 4-hydroxy carbazoles useful as intermediates for preparing compounds that are useful for inhibiting sPLA2 and novel intermediates.
摘要:
Disclosed is a process to prepare a sulfinate, which is useful for preparing a synthetic intermediate of an organic compound, especially for a color coupler, characterized by reducing a sulfonyl chloride with a sulfite or a hydrogensulfite in the presence of a hydrogenphosphate.
摘要:
Disclosed is a process to prepare a sulfinate, which is useful for preparing a synthetic intermediate of an organic compound, especially for a color coupler, characterized by reducing a sulfonyl chloride with a sulfite or a hydrogensulfite in the presence of a hydrogenphosphate.
摘要:
The invention relates to a process for producing an alkali metal salt of a perfluoroalkanesulfinic acid. This process includes the step of bringing a perfluoroalkanesulfonic fluoride into contact with an alkali metal salt of sulfurous acid in the presence of water. This process is useful, since this perfluoroalkanesulfonic fluoride (e.g., trifluoromethanesulfonic fluoride) is easily available.