EP 4025563 A1 20220713 - METHOD FOR PURIFYING 2-(FLUOROALKYL OR FLUOROALKOXY)-4,5-DICYANOIMIDAZOLES
Title (en)
METHOD FOR PURIFYING 2-(FLUOROALKYL OR FLUOROALKOXY)-4,5-DICYANOIMIDAZOLES
Title (de)
VERFAHREN ZUR REINIGUNG VON 2-(FLUORALKYL ODER FLUORALKOXY)-4,5-DICYANOIMIDAZOLEN
Title (fr)
PROCÉDÉ DE PURIFICATION DE 2-(FLUOROALKYL OU FLUOROALKOXY)-4,5-DICYANOIMIDAZOLES
Publication
Application
Priority
- FR 1909830 A 20190906
- EP 2020074831 W 20200904
Abstract (en)
[origin: WO2021044016A1] The present invention concerns a method for purifying a compound of following formula (III), in which Rf is a fluorinated alkyl group or fluorinated alkoxyl group comprising 1 to 5 carbon atoms, said method comprising the following steps: a) a step of heating a composition comprising the compound of formula (III) in an organic solvent S3, to a temperature T1 until the compound of formula (III) has dissolved; b) a step of cooling to an intermediate temperature T2 between 23°C and temperature T1 resulting in a two-phase composition comprising: - a phase P1 comprising the compound of formula (III); - a phase P2; c) a step of separating phases P1 and P2 at temperature T2; d) a step of cooling phase P1 to a temperature T3 until crystals of the compound of formula (III) are formed.
IPC 8 full level
C07D 233/90 (2006.01)
CPC (source: EP)
C07D 233/90 (2013.01); Y02E 60/10 (2013.01)
Citation (search report)
See references of WO 2021044016A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
WO 2021044016 A1 20210311; CN 114341115 A 20220412; EP 4025563 A1 20220713; FR 3100539 A1 20210312; FR 3100539 B1 20220225
DOCDB simple family (application)
EP 2020074831 W 20200904; CN 202080061857 A 20200904; EP 20771791 A 20200904; FR 1909830 A 20190906