Provided is a fluorine atom-containing compound represented by formula (1) below
(In the formula, Z represents a predetermined divalent group, each Ar independently represents a predetermined aromatic ring-containing group, and each Ar
F
independently represents a predetermined fluorine atom-containing aryl group).
series are introduced to extract the individual contributions of halogenbonds and anion–πinteractions to the transport of anions across lipid bilayer membranes (see picture). Known cation binding sites are used for counterion activation of the neutral calix[4]arene transporters. The experimental evidence for anion transport with halogenbonds is unprecedented.
polyfluoroarenes with Grignard reagent was developed. A variety of polyfluoro di-, tri-, and even tetr-arylmethanes was efficiently prepared with good to excellent yields in the presence of Mg turnings via a one-pot procedure.
Selective hydrogenation of benzene di- and tri-methanol compounds
申请人:IMPERIAL CHEMICAL INDUSTRIES PLC
公开号:EP0152174A2
公开(公告)日:1985-08-21
57 Benzene di- and tri-methanol compounds are selectively halogenated by reaction in aqueous solution at 70 to below 100°C with NCl or HBr in the presence of a water immiscible solvent eg. toluene. The process is particularly suitable for the preparation of 4-bromo- and 4-chloromethyl-2,3,5,6-tetrafluorobenzene methanols which are believed to be novel compounds and useful in the synthesis of pesticidal compounds.
Verfahren zur Herstellung synthetischer Pyrethroide durch azeotrope Veresterung
申请人:BAYER AG
公开号:EP0779269A1
公开(公告)日:1997-06-18
Die Erfindung betrifft ein neues Verfahren zur Herstellung synthetischer Pyrethroide der allgemeinen Formel (I)
in welcher
R1 und R2 die in der Beschreibung genannten Bedeutungen haben,
basierend auf einer azeotropen Veresterung von 2,3,5,6-Tetrafluorbenzylalkohol mit der entsprechenden Carbonsäure.