[EN] METHOD FOR RECOVERING SULFONIC ESTERS OR SULFONYL HALIDES FROM SALTS OF SULFONIC ACIDS [FR] PROCÉDÉ DE RÉCUPÉRATION D'ESTERS SULFONIQUES OU D'HALOGÉNURES DE SULFONYLE À PARTIR DE SELS D'ACIDES SULFONIQUES
[EN] 2-AMINO-3-FLUORO-3-(FLUOROMETHYL)-6-METHYL-6-PHENYL-3,4,5,6-TETRAHYDROPYRIDINS AS BACE1 INHIBITORS [FR] 2-AMINO-3-FLUORO-3-(FLUOROMÉTHYL)-6-MÉTHYL-6-PHÉNYL-3,4,5,6-TÉTRAHYDROPYRIDINES COMME INHIBITEURS DE BACE1
ECF processes have been extensively experienced and developed since early 1970s at the Fluorine Chemistry Laboratory of Padua University: several classes of perfluorinated inert and functional compounds have been obtained, in particular perfluoro heterocyclics and perfluorinated acid fluorides.
Phenyl-substituted perfluoroalkanesulfonanilides in which the phenyl rings are linked by sulfur, sulfinyl or sulfonyl and salts thereof in which the rings and the perfluoroalkylsulfonamido nitrogen are optionally substituted. The compounds are active herbicides and some are anti-inflammatory agents and analgesic agents.
Die elektrochemische Fluorierung von Alkansulfonamiden und Alkandisulfonamiden
作者:P. Satori、C. Jünger
DOI:10.1016/0022-1139(96)03478-1
日期:1996.7
Alkane sulphonylamides and disulphonylamides are stable in anhydrous (HF)x and undergo quantitative fission of S-N bonds during electrochemical fluorination. Besides NF3, the corresponding perfluoroalkane sulphonyl fluorides and disulphonyl fluorides are formed.
Twenty derivatives of N,N-dialkyl perfluoroalkanesulfonamides, n-CmF2m + 1SO2NRR′ (m = 1, 2, 4, 6, 8; R, R′ = CH3, CH2CH3 or CH2CH2OCH3), have been prepared and characterized. Their fundamental physicochemical properties, including melting point, density, viscosity and dielectric constant, are determined. The influences of structural variations in both the perfluoroalkyl and alkyl chains on the above
Process for preparing fluorochemical monoisocyanates
申请人:Klun P. Thomas
公开号:US20050143595A1
公开(公告)日:2005-06-30
A process for preparing fluorochemical monoisocyanates comprises reacting at least one fluorochemical alcohol represented by the formula C
n
F
2n+1
SO
2
NCH
3
(CH
2
)
m
OH, wherein n=2 to 5, and m=2 to 4, with 4,4′-diphenylmethane diisocyanate (MDI) in a solvent in which the resulting fluorochemical monoisocyanate is not soluble; wherein the molar ratio of fluorochemical alcohol:MDI is from about 1:1 to about 1:2.5.