26650-09-9Relevant academic research and scientific papers
FONTIONNALISATION DES IODURES DE F-ALKYL-2 ETHANE PAR CATALYSE PAR TRANSFERT DE PHASE: IMPORTANCE DE CETTE TECHNIQUE EN SERIE F-ALKYLEE
Szonyi, F.,Cambon, A.
, p. 59 - 68 (1989)
F-alkyl-2 ethane iodides are very important starting materials in the field of organic chemistry.Their reactivity in homogeneous medium shows some drawbacks: reactions are uncomplete and resulting compounds are not pure.We resolved these problems using phase transfer catalysis and obtained outstanding results.F-alkyl-2 ethane iodides are strongly hydrophobic; so organic solvents are not necessary (water was used) and moreover the emulsions promoted during the reaction are not stable.
Mixed fluoroalkyl-alkyl surfactants
-
Page/Page column 6-7, (2009/03/07)
A surfactant of formula 1 [in-line-formulae](Rf-A)a-Q-([B]k—R)b??Formula 1[/in-line-formulae] wherein a and b are each independently 1 or 2;Rf is a linear or branched perfluoroalkyl radical having from 2 to about 20 carbon atoms, optionally interrupted with at least one oxygen;R is a C1 to C20 linear, branched or cyclic alkyl, or a C6 to C10 aryl;B is —(CH2CHR1O)x—,k is 0 or 1, x is 1 to about 20,A is —(CH2)m[(CHR1CH2O)]s—[(CH2)m(CH)tCHOH(CH2)m]e—, wherein each m is independently 0 to 3, s is 0 to about 30, t is 0 or 1, and e is 0 or 1,R1 is H or CH3,Q is: —OP(O)(O?M+)(O)—,—O—,—S—(CH2)m—C(O)—O—,—SO2—O——CH2CH2O—C(O)CH2C(OH)(V)CH2C(O)O—;—(CH2CH2O)xCH2CH(OH)—(CH2CH2O)x—(CH2)m—Si[OSi(R2)3]2—, —SO2NR2—,—(CH2CH2O)zC(O)CH(SO3?M+)CH2C(O)(OCH2CH2)z—wherein z is 1 to about 15, or a bond when s is a positive integer,V is —C(O)OR3 and R3 is H, CH3 or Rf;R2 is C1 to C4 alkyl, andM+ is a Group 1 metal or an ammonium (NHxR2y)+ cation wherein x+y=4, and R2 is C1 to C4 alkyl,provided that when Q is —OP(O)(O?M+)(O)— or when Q is —(CH2CH2O)z—C(O)CH(SO3?M+)CH2C(O)(OCH2CH2)z—, then at least one of s or e is a positive integer.
A new synthesis of alkane and polyfluoroalkanesulfonyl chlorides
Benfodda, Zohra,Guillen, Franck,Arnion, Helene,Dahmani, Abdelkader,Blancou, Hubert
experimental part, p. 355 - 361 (2010/07/16)
This study describes a new and advantageous procedure for the synthesis of alkanesulfonyl chlorides (2) by the reaction of alkyl thiocyanates (1) with sulfuryl chloride in a mixture of acetic acid and water. The alkanesulfonyl chlorides were obtained in good yields.
Pharmaceutical Compositions Based on Fluorinated Sulphamides and Sulphinimides
-
Page/Page column 7-8, (2008/06/13)
Pharmacuetical composition comprising compounds of formula (I): [in-line-formulae]NZ1Z2Z3 ??(I) [/in-line-formulae] in which: Z1, Z2, Z3 each independently of the others represents: a hydrogen atom; C1-C6-alkyl group; a group —SO2R3 wherein R3 represents a linear or branched C1-C12-alkyl, -alkenyl or -alkynyl group, a C3-C10-cycloalkyl group or a C6-C10-aryl group, a (C1-C6)-alkyl-(C6-C14)-aryl group, or a C5-C10-heteroaryl group; it being understood that at least one of the groups Z1, Z2, Z3 represents a group of formula (II) [in-line-formulae]X—RF—(CH2)n—SO2—??(II) [/in-line-formulae] X, RF and n being as defined in claim 1.
